diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs index 6b1618421d..4cf4c24d77 100644 --- a/Jellyfin.Api/Controllers/DynamicHlsController.cs +++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs @@ -1565,7 +1565,7 @@ namespace Jellyfin.Api.Controllers args += " " + _encodingHelper.GetVideoQualityParam(state, codec, encodingOptions, "veryfast"); - // Unable to force key frames using these encoders, set key frames by GOP + // Unable to force key frames using these encoders, set key frames by GOP. if (string.Equals(codec, "h264_qsv", StringComparison.OrdinalIgnoreCase) || string.Equals(codec, "h264_nvenc", StringComparison.OrdinalIgnoreCase) || string.Equals(codec, "h264_amf", StringComparison.OrdinalIgnoreCase) @@ -1587,7 +1587,7 @@ namespace Jellyfin.Api.Controllers args += " " + keyFrameArg + gopArg; } - // Currenly b-frames in libx265 breaks the FMP4-HLS playback on iOS, disable it for now + // 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"; diff --git a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs index 4999a582e3..d6fa6e98d6 100644 --- a/Jellyfin.Api/Helpers/DynamicHlsHelper.cs +++ b/Jellyfin.Api/Helpers/DynamicHlsHelper.cs @@ -206,7 +206,7 @@ namespace Jellyfin.Api.Helpers if (state.VideoStream != null && state.VideoRequest != null) { - // Provide SDR HEVC entrance for backward compatibility + // Provide SDR HEVC entrance for backward compatibility. if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec) && !string.IsNullOrEmpty(state.VideoStream.VideoRange) && string.Equals(state.VideoStream.VideoRange, "HDR", StringComparison.OrdinalIgnoreCase) @@ -215,7 +215,7 @@ namespace Jellyfin.Api.Helpers var requestedVideoProfiles = state.GetRequestedProfiles("hevc"); if (requestedVideoProfiles != null && requestedVideoProfiles.Length > 0) { - // Force HEVC Main Profile and disable video stream copy + // Force HEVC Main Profile and disable video stream copy. state.OutputVideoCodec = "hevc"; var sdrVideoUrl = ReplaceProfile(playlistUrl, "hevc", string.Join(",", requestedVideoProfiles), "main"); sdrVideoUrl += "&AllowVideoStreamCopy=false"; @@ -232,7 +232,7 @@ namespace Jellyfin.Api.Helpers } } - // Provide Level 5.0 entrance for backward compatibility + // Provide Level 5.0 entrance for backward compatibility. // e.g. Apple A10 chips refuse the master playlist containing SDR HEVC Main Level 5.1 video, // but in fact it is capable of playing videos up to Level 6.1. if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec) @@ -245,13 +245,13 @@ namespace Jellyfin.Api.Helpers var playlistCodecsField = new StringBuilder(); AppendPlaylistCodecsField(playlistCodecsField, state); - // Force the video level to 5.0 + // Force the video level to 5.0. var originalLevel = state.VideoStream.Level; state.VideoStream.Level = 150; var newPlaylistCodecsField = new StringBuilder(); AppendPlaylistCodecsField(newPlaylistCodecsField, state); - // Restore the video level + // Restore the video level. state.VideoStream.Level = originalLevel; var newPlaylist = ReplacePlaylistCodecsField(basicPlaylist, playlistCodecsField, newPlaylistCodecsField); builder.Append(newPlaylist); @@ -333,7 +333,7 @@ namespace Jellyfin.Api.Helpers } else { - // Currently we only encode to SDR + // Currently we only encode to SDR. builder.Append(",VIDEO-RANGE=SDR"); } } @@ -693,9 +693,10 @@ namespace Jellyfin.Api.Helpers private string ReplaceProfile(string url, string codec, string oldValue, string newValue) { + string profileStr = codec + "-profile="; return url.Replace( - codec + "-profile=" + oldValue, - codec + "-profile=" + newValue, + profileStr + oldValue, + profileStr + newValue, StringComparison.OrdinalIgnoreCase); } diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index 6e348f1e65..6255e1b61c 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -662,10 +662,10 @@ namespace MediaBrowser.Controller.MediaEncoding if (string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase) || string.Equals(state.ActualOutputVideoCodec, "h265", StringComparison.OrdinalIgnoreCase)) { - // Transcode to level 5.0 and lower for maximum compatibility - // level 5.0 is suitable for up to 4k 30fps hevc encoding, otherwise let the encoder to handle it + // Transcode to level 5.0 and lower for maximum compatibility. + // Level 5.0 is suitable for up to 4k 30fps hevc encoding, otherwise let the encoder to handle it. // https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding_tiers_and_levels - // MaxLumaSampleRate = 3840*2160*30 = 248832000 < 267386880, + // MaxLumaSampleRate = 3840*2160*30 = 248832000 < 267386880. if (requestLevel >= 150) { return "150"; @@ -673,7 +673,7 @@ namespace MediaBrowser.Controller.MediaEncoding } else if (string.Equals(state.ActualOutputVideoCodec, "h264", StringComparison.OrdinalIgnoreCase)) { - // Clients may direct play higher than level 41, but there's no reason to transcode higher + // Clients may direct play higher than level 41, but there's no reason to transcode higher. if (requestLevel >= 41) { return "41"; @@ -843,7 +843,7 @@ namespace MediaBrowser.Controller.MediaEncoding else if (string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase) // h264 (h264_nvenc) || string.Equals(videoEncoder, "hevc_nvenc", StringComparison.OrdinalIgnoreCase)) // hevc (hevc_nvenc) { - // following preset will be deprecated in ffmpeg 4.4, use p1~p7 instead + // following preset will be deprecated in ffmpeg 4.4, use p1~p7 instead. switch (encodingOptions.EncoderPreset) { case "veryslow": @@ -976,7 +976,7 @@ namespace MediaBrowser.Controller.MediaEncoding var profile = state.GetRequestedProfiles(targetVideoCodec).FirstOrDefault(); profile = Regex.Replace(profile, @"\s+", String.Empty); - // only libx264 support encoding H264 High 10 Profile, otherwise force High Profile + // Only libx264 support encoding H264 High 10 Profile, otherwise force High Profile. if (!string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase) && profile != null && profile.IndexOf("high 10", StringComparison.OrdinalIgnoreCase) != -1) @@ -985,7 +985,7 @@ namespace MediaBrowser.Controller.MediaEncoding } // h264_vaapi does not support Baseline profile, force Constrained Baseline in this case, - // which is compatible (and ugly) + // which is compatible (and ugly). if (string.Equals(videoEncoder, "h264_vaapi", StringComparison.OrdinalIgnoreCase) && profile != null && profile.IndexOf("baseline", StringComparison.OrdinalIgnoreCase) != -1) @@ -993,7 +993,7 @@ namespace MediaBrowser.Controller.MediaEncoding profile = "constrained_baseline"; } - // libx264, h264_qsv and h264_nvenc does not support Constrained Baseline profile, force Baseline in this case + // libx264, h264_qsv and h264_nvenc does not support Constrained Baseline profile, force Baseline in this case. if ((string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase) || string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) || string.Equals(videoEncoder, "h264_nvenc", StringComparison.OrdinalIgnoreCase)) @@ -1003,7 +1003,7 @@ namespace MediaBrowser.Controller.MediaEncoding profile = "baseline"; } - // Currently hevc_amf only support encoding HEVC Main Profile, otherwise force Main Profile + // Currently hevc_amf only support encoding HEVC Main Profile, otherwise force Main Profile. if (!string.Equals(videoEncoder, "hevc_amf", StringComparison.OrdinalIgnoreCase) && profile != null && profile.IndexOf("main 10", StringComparison.OrdinalIgnoreCase) != -1) @@ -1027,7 +1027,7 @@ namespace MediaBrowser.Controller.MediaEncoding { level = NormalizeTranscodingLevel(state, level); - // libx264, QSV, AMF, VAAPI can adjust the given level to match the output + // libx264, QSV, AMF, VAAPI can adjust the given level to match the output. if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) || string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase)) { @@ -1035,7 +1035,7 @@ namespace MediaBrowser.Controller.MediaEncoding } else if (string.Equals(videoEncoder, "hevc_qsv", StringComparison.OrdinalIgnoreCase)) { - // hevc_qsv use -level 51 instead of -level 153 + // hevc_qsv use -level 51 instead of -level 153. if (double.TryParse(level, NumberStyles.Any, _usCulture, out double hevcLevel)) { param += " -level " + hevcLevel / 3; @@ -1066,10 +1066,10 @@ namespace MediaBrowser.Controller.MediaEncoding if (string.Equals(videoEncoder, "libx265", StringComparison.OrdinalIgnoreCase)) { - // libx265 only accept level option in -x265-params - // level option may cause libx265 to fail - // libx265 cannot adjust the given level, just throw an error - // TODO: set fine tuned params + // libx265 only accept level option in -x265-params. + // level option may cause libx265 to fail. + // libx265 cannot adjust the given level, just throw an error. + // TODO: set fine tuned params. param += " -x265-params:0 no-info=1"; }