Don't throw when livestream file isn't found

Emby.Server.Implementations/Library/MediaSourceManager.cs

@@ -602,7 +602,8 @@ namespace Emby.Server.Implementations.Library
 
         public async Task<MediaSourceInfo> GetLiveStreamMediaInfo(string id, CancellationToken cancellationToken)
         {
-            var liveStreamInfo = GetLiveStreamInfo(id);
+            // TODO probably shouldn't throw here but it is kept for "backwards compatibility"
+            var liveStreamInfo = GetLiveStreamInfo(id) ?? throw new ResourceNotFoundException();
 
             var mediaSource = liveStreamInfo.MediaSource;
 
@@ -778,7 +779,8 @@ namespace Emby.Server.Implementations.Library
                 throw new ArgumentNullException(nameof(id));
             }
 
-            var info = GetLiveStreamInfo(id);
+            // TODO probably shouldn't throw here but it is kept for "backwards compatibility"
+            var info = GetLiveStreamInfo(id) ?? throw new ResourceNotFoundException();
             return Task.FromResult(new Tuple<MediaSourceInfo, IDirectStreamProvider>(info.MediaSource, info as IDirectStreamProvider));
         }
 
@@ -794,7 +796,7 @@ namespace Emby.Server.Implementations.Library
                 return info;
             }
 
-            throw new ResourceNotFoundException();
+            return null;
         }
 
         public async Task<MediaSourceInfo> GetLiveStream(string id, CancellationToken cancellationToken)

Jellyfin.Api/Controllers/VideosController.cs

@@ -454,6 +454,10 @@ namespace Jellyfin.Api.Controllers
                 StreamingHelpers.AddDlnaHeaders(state, Response.Headers, true, startTimeTicks, Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
+                if (liveStreamInfo == null)
+                {
+                    return NotFound();
+                }
                 var liveStream = new ProgressiveFileStream(liveStreamInfo.GetStream());
                 // TODO (moved from MediaBrowser.Api): Don't hardcode contentType
                 return File(liveStream, MimeTypes.GetMimeType("file.ts")!);

Jellyfin.Api/Helpers/AudioHelper.cs

@@ -1,4 +1,5 @@
-using System.Net.Http;
+using System.IO;
+using System.Net.Http;
 using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.Api.Models.StreamingDtos;
@@ -121,6 +122,10 @@ namespace Jellyfin.Api.Helpers
                 StreamingHelpers.AddDlnaHeaders(state, _httpContextAccessor.HttpContext.Response.Headers, true, streamingRequest.StartTimeTicks, _httpContextAccessor.HttpContext.Request, _dlnaManager);
 
                 var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
+                if (liveStreamInfo == null)
+                {
+                    throw new FileNotFoundException();
+                }
                 var liveStream = new ProgressiveFileStream(liveStreamInfo.GetStream());
                 // TODO (moved from MediaBrowser.Api): Don't hardcode contentType
                 return new FileStreamResult(liveStream, MimeTypes.GetMimeType("file.ts"));