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587 lines
29 KiB
587 lines
29 KiB
using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.Globalization;
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using System.IO;
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using System.Runtime.InteropServices;
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using System.Threading;
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using System.Threading.Tasks;
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using Jellyfin.Api.Attributes;
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using Jellyfin.Api.Constants;
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using Jellyfin.Api.Helpers;
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using Jellyfin.Api.Models.PlaybackDtos;
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using Jellyfin.Api.Models.StreamingDtos;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Devices;
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using MediaBrowser.Controller.Dlna;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Controller.Net;
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using MediaBrowser.Model.Configuration;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Net;
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using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Mvc;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Logging;
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namespace Jellyfin.Api.Controllers
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{
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/// <summary>
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/// The video hls controller.
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/// </summary>
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[Route("")]
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[Authorize(Policy = Policies.DefaultAuthorization)]
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public class VideoHlsController : BaseJellyfinApiController
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{
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private const string DefaultEncoderPreset = "superfast";
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private const TranscodingJobType TranscodingJobType = MediaBrowser.Controller.MediaEncoding.TranscodingJobType.Hls;
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private readonly EncodingHelper _encodingHelper;
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private readonly IDlnaManager _dlnaManager;
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private readonly IAuthorizationContext _authContext;
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private readonly IUserManager _userManager;
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private readonly ILibraryManager _libraryManager;
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private readonly IMediaSourceManager _mediaSourceManager;
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private readonly IServerConfigurationManager _serverConfigurationManager;
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private readonly IMediaEncoder _mediaEncoder;
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private readonly IDeviceManager _deviceManager;
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private readonly TranscodingJobHelper _transcodingJobHelper;
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private readonly ILogger<VideoHlsController> _logger;
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private readonly EncodingOptions _encodingOptions;
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/// <summary>
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/// Initializes a new instance of the <see cref="VideoHlsController"/> class.
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/// </summary>
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/// <param name="mediaEncoder">Instance of the <see cref="IMediaEncoder"/> interface.</param>
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/// <param name="dlnaManager">Instance of the <see cref="IDlnaManager"/> interface.</param>
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/// <param name="userManger">Instance of the <see cref="IUserManager"/> interface.</param>
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/// <param name="authorizationContext">Instance of the <see cref="IAuthorizationContext"/> interface.</param>
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/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
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/// <param name="mediaSourceManager">Instance of the <see cref="IMediaSourceManager"/> interface.</param>
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/// <param name="serverConfigurationManager">Instance of the <see cref="IServerConfigurationManager"/> interface.</param>
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/// <param name="deviceManager">Instance of the <see cref="IDeviceManager"/> interface.</param>
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/// <param name="transcodingJobHelper">The <see cref="TranscodingJobHelper"/> singleton.</param>
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/// <param name="logger">Instance of the <see cref="ILogger{VideoHlsController}"/>.</param>
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/// <param name="encodingHelper">Instance of <see cref="EncodingHelper"/>.</param>
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public VideoHlsController(
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IMediaEncoder mediaEncoder,
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IDlnaManager dlnaManager,
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IUserManager userManger,
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IAuthorizationContext authorizationContext,
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ILibraryManager libraryManager,
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IMediaSourceManager mediaSourceManager,
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IServerConfigurationManager serverConfigurationManager,
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IDeviceManager deviceManager,
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TranscodingJobHelper transcodingJobHelper,
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ILogger<VideoHlsController> logger,
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EncodingHelper encodingHelper)
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{
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_dlnaManager = dlnaManager;
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_authContext = authorizationContext;
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_userManager = userManger;
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_libraryManager = libraryManager;
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_mediaSourceManager = mediaSourceManager;
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_serverConfigurationManager = serverConfigurationManager;
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_mediaEncoder = mediaEncoder;
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_deviceManager = deviceManager;
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_transcodingJobHelper = transcodingJobHelper;
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_logger = logger;
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_encodingHelper = encodingHelper;
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_encodingOptions = serverConfigurationManager.GetEncodingOptions();
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}
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/// <summary>
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/// Gets a hls live stream.
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/// </summary>
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/// <param name="itemId">The item id.</param>
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/// <param name="container">The audio container.</param>
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/// <param name="static">Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false.</param>
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/// <param name="params">The streaming parameters.</param>
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/// <param name="tag">The tag.</param>
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/// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param>
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/// <param name="playSessionId">The play session id.</param>
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/// <param name="segmentContainer">The segment container.</param>
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/// <param name="segmentLength">The segment lenght.</param>
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/// <param name="minSegments">The minimum number of segments.</param>
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/// <param name="mediaSourceId">The media version id, if playing an alternate version.</param>
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/// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param>
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/// <param name="audioCodec">Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma.</param>
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/// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param>
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/// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param>
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/// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param>
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/// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param>
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/// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param>
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/// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param>
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/// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param>
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/// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param>
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/// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param>
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/// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param>
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/// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param>
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/// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
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/// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param>
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/// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param>
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/// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param>
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/// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param>
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/// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param>
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/// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param>
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/// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param>
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/// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param>
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/// <param name="maxRefFrames">Optional.</param>
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/// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param>
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/// <param name="requireAvc">Optional. Whether to require avc.</param>
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/// <param name="deInterlace">Optional. Whether to deinterlace the video.</param>
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/// <param name="requireNonAnamorphic">Optional. Whether to require a non anamorphic stream.</param>
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/// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param>
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/// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param>
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/// <param name="liveStreamId">The live stream id.</param>
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/// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param>
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/// <param name="videoCodec">Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv.</param>
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/// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param>
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/// <param name="transcodeReasons">Optional. The transcoding reason.</param>
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/// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param>
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/// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param>
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/// <param name="context">Optional. The <see cref="EncodingContext"/>.</param>
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/// <param name="streamOptions">Optional. The streaming options.</param>
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/// <param name="maxWidth">Optional. The max width.</param>
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/// <param name="maxHeight">Optional. The max height.</param>
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/// <param name="enableSubtitlesInManifest">Optional. Whether to enable subtitles in the manifest.</param>
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/// <response code="200">Hls live stream retrieved.</response>
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/// <returns>A <see cref="FileResult"/> containing the hls file.</returns>
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[HttpGet("Videos/{itemId}/live.m3u8")]
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[ProducesResponseType(StatusCodes.Status200OK)]
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[ProducesPlaylistFile]
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public async Task<ActionResult> GetLiveHlsStream(
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[FromRoute, Required] Guid itemId,
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[FromQuery] string? container,
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[FromQuery] bool? @static,
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[FromQuery] string? @params,
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[FromQuery] string? tag,
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[FromQuery] string? deviceProfileId,
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[FromQuery] string? playSessionId,
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[FromQuery] string? segmentContainer,
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[FromQuery] int? segmentLength,
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[FromQuery] int? minSegments,
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[FromQuery] string? mediaSourceId,
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[FromQuery] string? deviceId,
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[FromQuery] string? audioCodec,
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[FromQuery] bool? enableAutoStreamCopy,
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[FromQuery] bool? allowVideoStreamCopy,
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[FromQuery] bool? allowAudioStreamCopy,
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[FromQuery] bool? breakOnNonKeyFrames,
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[FromQuery] int? audioSampleRate,
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[FromQuery] int? maxAudioBitDepth,
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[FromQuery] int? audioBitRate,
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[FromQuery] int? audioChannels,
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[FromQuery] int? maxAudioChannels,
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[FromQuery] string? profile,
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[FromQuery] string? level,
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[FromQuery] float? framerate,
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[FromQuery] float? maxFramerate,
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[FromQuery] bool? copyTimestamps,
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[FromQuery] long? startTimeTicks,
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[FromQuery] int? width,
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[FromQuery] int? height,
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[FromQuery] int? videoBitRate,
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[FromQuery] int? subtitleStreamIndex,
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[FromQuery] SubtitleDeliveryMethod? subtitleMethod,
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[FromQuery] int? maxRefFrames,
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[FromQuery] int? maxVideoBitDepth,
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[FromQuery] bool? requireAvc,
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[FromQuery] bool? deInterlace,
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[FromQuery] bool? requireNonAnamorphic,
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[FromQuery] int? transcodingMaxAudioChannels,
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[FromQuery] int? cpuCoreLimit,
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[FromQuery] string? liveStreamId,
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[FromQuery] bool? enableMpegtsM2TsMode,
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[FromQuery] string? videoCodec,
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[FromQuery] string? subtitleCodec,
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[FromQuery] string? transcodeReasons,
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[FromQuery] int? audioStreamIndex,
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[FromQuery] int? videoStreamIndex,
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[FromQuery] EncodingContext? context,
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[FromQuery] Dictionary<string, string> streamOptions,
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[FromQuery] int? maxWidth,
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[FromQuery] int? maxHeight,
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[FromQuery] bool? enableSubtitlesInManifest)
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{
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VideoRequestDto streamingRequest = new VideoRequestDto
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{
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Id = itemId,
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Container = container,
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Static = @static ?? false,
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Params = @params,
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Tag = tag,
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DeviceProfileId = deviceProfileId,
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PlaySessionId = playSessionId,
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SegmentContainer = segmentContainer,
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SegmentLength = segmentLength,
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MinSegments = minSegments,
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MediaSourceId = mediaSourceId,
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DeviceId = deviceId,
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AudioCodec = audioCodec,
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EnableAutoStreamCopy = enableAutoStreamCopy ?? true,
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AllowAudioStreamCopy = allowAudioStreamCopy ?? true,
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AllowVideoStreamCopy = allowVideoStreamCopy ?? true,
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BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false,
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AudioSampleRate = audioSampleRate,
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MaxAudioChannels = maxAudioChannels,
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AudioBitRate = audioBitRate,
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MaxAudioBitDepth = maxAudioBitDepth,
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AudioChannels = audioChannels,
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Profile = profile,
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Level = level,
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Framerate = framerate,
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MaxFramerate = maxFramerate,
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CopyTimestamps = copyTimestamps ?? false,
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StartTimeTicks = startTimeTicks,
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Width = width,
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Height = height,
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VideoBitRate = videoBitRate,
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SubtitleStreamIndex = subtitleStreamIndex,
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SubtitleMethod = subtitleMethod ?? SubtitleDeliveryMethod.Encode,
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MaxRefFrames = maxRefFrames,
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MaxVideoBitDepth = maxVideoBitDepth,
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RequireAvc = requireAvc ?? false,
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DeInterlace = deInterlace ?? false,
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RequireNonAnamorphic = requireNonAnamorphic ?? false,
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TranscodingMaxAudioChannels = transcodingMaxAudioChannels,
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CpuCoreLimit = cpuCoreLimit,
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LiveStreamId = liveStreamId,
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EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? false,
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VideoCodec = videoCodec,
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SubtitleCodec = subtitleCodec,
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TranscodeReasons = transcodeReasons,
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AudioStreamIndex = audioStreamIndex,
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VideoStreamIndex = videoStreamIndex,
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Context = context ?? EncodingContext.Streaming,
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StreamOptions = streamOptions,
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MaxHeight = maxHeight,
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MaxWidth = maxWidth,
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EnableSubtitlesInManifest = enableSubtitlesInManifest ?? true
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};
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// CTS lifecycle is managed internally.
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var cancellationTokenSource = new CancellationTokenSource();
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using var state = await StreamingHelpers.GetStreamingState(
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streamingRequest,
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Request,
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_authContext,
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_mediaSourceManager,
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_userManager,
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_libraryManager,
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_serverConfigurationManager,
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_mediaEncoder,
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_encodingHelper,
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_dlnaManager,
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_deviceManager,
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_transcodingJobHelper,
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TranscodingJobType,
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cancellationTokenSource.Token)
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.ConfigureAwait(false);
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TranscodingJobDto? job = null;
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var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8");
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if (!System.IO.File.Exists(playlistPath))
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{
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var transcodingLock = _transcodingJobHelper.GetTranscodingLock(playlistPath);
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await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
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try
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{
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if (!System.IO.File.Exists(playlistPath))
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{
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// If the playlist doesn't already exist, startup ffmpeg
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try
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{
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job = await _transcodingJobHelper.StartFfMpeg(
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state,
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playlistPath,
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GetCommandLineArguments(playlistPath, state),
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Request,
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TranscodingJobType,
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cancellationTokenSource)
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.ConfigureAwait(false);
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job.IsLiveOutput = true;
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}
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catch
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{
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state.Dispose();
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throw;
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}
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minSegments = state.MinSegments;
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if (minSegments > 0)
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{
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await HlsHelpers.WaitForMinimumSegmentCount(playlistPath, minSegments, _logger, cancellationTokenSource.Token).ConfigureAwait(false);
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}
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}
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}
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finally
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{
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transcodingLock.Release();
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}
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}
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job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
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if (job != null)
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{
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_transcodingJobHelper.OnTranscodeEndRequest(job);
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}
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var playlistText = HlsHelpers.GetLivePlaylistText(playlistPath, state);
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return Content(playlistText, MimeTypes.GetMimeType("playlist.m3u8"));
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}
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/// <summary>
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/// Gets the command line arguments for ffmpeg.
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/// </summary>
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/// <param name="outputPath">The output path of the file.</param>
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/// <param name="state">The <see cref="StreamState"/>.</param>
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/// <returns>The command line arguments as a string.</returns>
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private string GetCommandLineArguments(string outputPath, StreamState state)
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{
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var videoCodec = _encodingHelper.GetVideoEncoder(state, _encodingOptions);
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var threads = EncodingHelper.GetNumberOfThreads(state, _encodingOptions, videoCodec); // GetNumberOfThreads is static.
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var inputModifier = _encodingHelper.GetInputModifier(state, _encodingOptions);
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var mapArgs = state.IsOutputVideo ? _encodingHelper.GetMapArgs(state) : string.Empty;
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var directory = Path.GetDirectoryName(outputPath) ?? throw new ArgumentException($"Provided path ({outputPath}) is not valid.", nameof(outputPath));
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var outputFileNameWithoutExtension = Path.GetFileNameWithoutExtension(outputPath);
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var outputPrefix = Path.Combine(directory, outputFileNameWithoutExtension);
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var outputExtension = EncodingHelper.GetSegmentFileExtension(state.Request.SegmentContainer);
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var outputTsArg = outputPrefix + "%d" + outputExtension;
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var segmentFormat = outputExtension.TrimStart('.');
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if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase))
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{
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segmentFormat = "mpegts";
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}
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else if (string.Equals(segmentFormat, "mp4", StringComparison.OrdinalIgnoreCase))
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{
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var outputFmp4HeaderArg = string.Empty;
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if (OperatingSystem.IsWindows())
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{
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// on Windows, the path of fmp4 header file needs to be configured
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outputFmp4HeaderArg = " -hls_fmp4_init_filename \"" + outputPrefix + "-1" + outputExtension + "\"";
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}
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else
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{
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// on Linux/Unix, ffmpeg generate fmp4 header file to m3u8 output folder
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outputFmp4HeaderArg = " -hls_fmp4_init_filename \"" + outputFileNameWithoutExtension + "-1" + outputExtension + "\"";
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}
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segmentFormat = "fmp4" + outputFmp4HeaderArg;
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}
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else
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{
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_logger.LogError("Invalid HLS segment container: {SegmentFormat}", segmentFormat);
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}
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var maxMuxingQueueSize = _encodingOptions.MaxMuxingQueueSize > 128
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? _encodingOptions.MaxMuxingQueueSize.ToString(CultureInfo.InvariantCulture)
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: "128";
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var baseUrlParam = string.Format(
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CultureInfo.InvariantCulture,
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"\"hls/{0}/\"",
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Path.GetFileNameWithoutExtension(outputPath));
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return string.Format(
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CultureInfo.InvariantCulture,
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"{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -copyts -avoid_negative_ts disabled -max_muxing_queue_size {6} -f hls -max_delay 5000000 -hls_time {7} -hls_segment_type {8} -start_number 0 -hls_base_url {9} -hls_playlist_type event -hls_segment_filename \"{10}\" -y \"{11}\"",
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inputModifier,
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_encodingHelper.GetInputArgument(state, _encodingOptions),
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threads,
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mapArgs,
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GetVideoArguments(state),
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GetAudioArguments(state),
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maxMuxingQueueSize,
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state.SegmentLength.ToString(CultureInfo.InvariantCulture),
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segmentFormat,
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baseUrlParam,
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outputTsArg,
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outputPath).Trim();
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}
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/// <summary>
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/// Gets the audio arguments for transcoding.
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/// </summary>
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/// <param name="state">The <see cref="StreamState"/>.</param>
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/// <returns>The command line arguments for audio transcoding.</returns>
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private string GetAudioArguments(StreamState state)
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{
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if (state.AudioStream == null)
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{
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return string.Empty;
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}
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|
var audioCodec = _encodingHelper.GetAudioEncoder(state);
|
|
|
|
if (!state.IsOutputVideo)
|
|
{
|
|
if (EncodingHelper.IsCopyCodec(audioCodec))
|
|
{
|
|
var bitStreamArgs = EncodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
|
|
|
|
return "-acodec copy -strict -2" + bitStreamArgs;
|
|
}
|
|
|
|
var audioTranscodeParams = string.Empty;
|
|
|
|
audioTranscodeParams += "-acodec " + audioCodec;
|
|
|
|
if (state.OutputAudioBitrate.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ab " + state.OutputAudioBitrate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
if (state.OutputAudioChannels.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
if (state.OutputAudioSampleRate.HasValue)
|
|
{
|
|
audioTranscodeParams += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
audioTranscodeParams += " -vn";
|
|
return audioTranscodeParams;
|
|
}
|
|
|
|
if (EncodingHelper.IsCopyCodec(audioCodec))
|
|
{
|
|
var bitStreamArgs = EncodingHelper.GetAudioBitStreamArguments(state, state.Request.SegmentContainer, state.MediaSource.Container);
|
|
|
|
return "-acodec copy -strict -2" + bitStreamArgs;
|
|
}
|
|
|
|
var args = "-codec:a:0 " + audioCodec;
|
|
|
|
var channels = state.OutputAudioChannels;
|
|
|
|
if (channels.HasValue)
|
|
{
|
|
args += " -ac " + channels.Value;
|
|
}
|
|
|
|
var bitrate = state.OutputAudioBitrate;
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
if (state.OutputAudioSampleRate.HasValue)
|
|
{
|
|
args += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture);
|
|
}
|
|
|
|
args += _encodingHelper.GetAudioFilterParam(state, _encodingOptions);
|
|
|
|
return args;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the video arguments for transcoding.
|
|
/// </summary>
|
|
/// <param name="state">The <see cref="StreamState"/>.</param>
|
|
/// <returns>The command line arguments for video transcoding.</returns>
|
|
private string GetVideoArguments(StreamState state)
|
|
{
|
|
if (state.VideoStream == null)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
if (!state.IsOutputVideo)
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var codec = _encodingHelper.GetVideoEncoder(state, _encodingOptions);
|
|
|
|
var args = "-codec:v:0 " + codec;
|
|
|
|
// Prefer hvc1 to hev1.
|
|
if (string.Equals(state.ActualOutputVideoCodec, "h265", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
|
|
|| string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
args += " -tag:v:0 hvc1";
|
|
}
|
|
|
|
// if (state.EnableMpegtsM2TsMode)
|
|
// {
|
|
// args += " -mpegts_m2ts_mode 1";
|
|
// }
|
|
|
|
// See if we can save come cpu cycles by avoiding encoding.
|
|
if (EncodingHelper.IsCopyCodec(codec))
|
|
{
|
|
// If h264_mp4toannexb is ever added, do not use it for live tv.
|
|
if (state.VideoStream != null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
string bitStreamArgs = EncodingHelper.GetBitStreamArgs(state.VideoStream);
|
|
if (!string.IsNullOrEmpty(bitStreamArgs))
|
|
{
|
|
args += " " + bitStreamArgs;
|
|
}
|
|
}
|
|
|
|
args += " -start_at_zero";
|
|
}
|
|
else
|
|
{
|
|
args += _encodingHelper.GetVideoQualityParam(state, codec, _encodingOptions, DefaultEncoderPreset);
|
|
|
|
// Set the key frame params for video encoding to match the hls segment time.
|
|
args += _encodingHelper.GetHlsVideoKeyFrameArguments(state, codec, state.SegmentLength, true, null);
|
|
|
|
// Currenly b-frames in libx265 breaks the FMP4-HLS playback on iOS, disable it for now.
|
|
if (string.Equals(codec, "libx265", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
args += " -bf 0";
|
|
}
|
|
|
|
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
|
|
|
|
if (hasGraphicalSubs)
|
|
{
|
|
// Graphical subs overlay and resolution params.
|
|
args += _encodingHelper.GetGraphicalSubtitleParam(state, _encodingOptions, codec);
|
|
}
|
|
else
|
|
{
|
|
// Resolution params.
|
|
args += _encodingHelper.GetOutputSizeParam(state, _encodingOptions, codec);
|
|
}
|
|
|
|
if (state.SubtitleStream == null || !state.SubtitleStream.IsExternal || state.SubtitleStream.IsTextSubtitleStream)
|
|
{
|
|
args += " -start_at_zero";
|
|
}
|
|
}
|
|
|
|
args += " -flags -global_header";
|
|
|
|
if (!string.IsNullOrEmpty(state.OutputVideoSync))
|
|
{
|
|
args += " -vsync " + state.OutputVideoSync;
|
|
}
|
|
|
|
args += _encodingHelper.GetOutputFFlags(state);
|
|
|
|
return args;
|
|
}
|
|
}
|
|
}
|