add start from beginning option to playback troubleshooting (#2182)

CHANGELOG.md

@@ -107,11 +107,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - Remote Stream library items consist of YAML (`.yml`) files with the following fields
       - `url`: the URL of the content that can be played directly by ffmpeg
       - `script`: the process name and arguments for a command that will output content to stdout
-      - `duration`: when the content is "live" and does not have duration metadata, this must be provided to allow scheduling
       - `is_live`: *required* property that indicates whether the remote stream contains live content
-        - When this is set to `true`, ETV cannot work ahead on transcoding this item, which is a necessary tradeoff for supporting live content
-        - When this is set to `false`, ETV will treat the stream as VOD and attempt to work ahead on transcoding like any other local item
-          - This *will* cause errors when the content is actually live, so it's important to configure this correctly
+          - When this is set to `true`, ETV cannot work ahead on transcoding this item, which is a necessary tradeoff for supporting live content
+          - When this is set to `false`, ETV will treat the stream as VOD and attempt to work ahead on transcoding like any other local item
+              - This *will* cause errors when the content is actually live, so it's important to configure this correctly
+      - `duration`: when the content is live and does not have duration metadata, this must be provided to allow scheduling
     - The remote stream definition (YAML file) may provide either a `url` or a `script`
       - If both are provided, `url` will be used
 

ErsatzTV.Application/Troubleshooting/Commands/ArchiveTroubleshootingResults.cs

@@ -1,4 +1,8 @@
 namespace ErsatzTV.Application.Troubleshooting;
 
-public record ArchiveTroubleshootingResults(int MediaItemId, int FFmpegProfileId, int WatermarkId)
+public record ArchiveTroubleshootingResults(
+    int MediaItemId,
+    int FFmpegProfileId,
+    int WatermarkId,
+    bool StartFromBeginning)
     : IRequest<Option<string>>;

ErsatzTV.Application/Troubleshooting/Commands/PrepareTroubleshootingPlayback.cs

@@ -3,5 +3,9 @@ using ErsatzTV.Core;
 
 namespace ErsatzTV.Application.Troubleshooting;
 
-public record PrepareTroubleshootingPlayback(int MediaItemId, int FFmpegProfileId, int WatermarkId)
+public record PrepareTroubleshootingPlayback(
+    int MediaItemId,
+    int FFmpegProfileId,
+    int WatermarkId,
+    bool StartFromBeginning)
     : IRequest<Either<BaseError, Command>>;

ErsatzTV.Application/Troubleshooting/Commands/PrepareTroubleshootingPlaybackHandler.cs

@@ -96,6 +96,15 @@ public class PrepareTroubleshootingPlaybackHandler(
         // we cannot burst live input
         bool hlsRealtime = mediaItem is RemoteStream { IsLive: true };
 
+        TimeSpan inPoint = TimeSpan.Zero;
+        TimeSpan outPoint = duration;
+        if (!hlsRealtime && !request.StartFromBeginning)
+        {
+            inPoint = TimeSpan.FromSeconds(version.Duration.TotalSeconds / 2.0);
+            duration = TimeSpan.FromSeconds(duration.TotalSeconds / 2.0);
+            outPoint = inPoint + duration;
+        }
+
         Command process = await ffmpegProcessService.ForPlayoutItem(
             ffmpegPath,
             ffprobePath,
@@ -127,8 +136,8 @@ public class PrepareTroubleshootingPlaybackHandler(
             Option<int>.None,
             hlsRealtime,
             FillerKind.None,
-            TimeSpan.Zero,
-            duration,
+            inPoint,
+            outPoint,
             0,
             None,
             false,

ErsatzTV.Scanner.Tests/Core/FFmpeg/TranscodingTests.cs

@@ -145,23 +145,23 @@ public class TranscodingTests
         public static InputFormat[] InputFormats =
         [
             // // // example format that requires colorspace filter
-            // new("libx264", "yuv420p", "tv", "smpte170m", "bt709", "smpte170m"),
+            new("libx264", "yuv420p", "tv", "smpte170m", "bt709", "smpte170m"),
             // // //
             // // // // example format that requires setparams filter
-            // new("libx264", "yuv420p", string.Empty, string.Empty, string.Empty, string.Empty),
+            new("libx264", "yuv420p", string.Empty, string.Empty, string.Empty, string.Empty),
             // // //
             // // // // new("libx264", "yuvj420p"),
-            // new("libx264", "yuv420p10le"),
+            new("libx264", "yuv420p10le"),
             // // // // new("libx264", "yuv444p10le"),
             // // //
             // // // // new("mpeg1video", "yuv420p"),
             // // // //
-            // new("mpeg2video", "yuv420p"),
+            new("mpeg2video", "yuv420p"),
             // //
             //new InputFormat("libx265", "yuv420p"),
-            new("libx265", "yuv420p10le")
+            new("libx265", "yuv420p10le"),
             //
-            // new("mpeg4", "yuv420p"),
+            new("mpeg4", "yuv420p"),
             //
             // new("libvpx-vp9", "yuv420p"),
             // new("libvpx-vp9", "yuv420p10le"),

ErsatzTV/Controllers/Api/TroubleshootController.cs

@@ -26,10 +26,12 @@ public class TroubleshootController(
         int ffmpegProfile,
         [FromQuery]
         int watermark,
+        [FromQuery]
+        bool startFromBeginning,
         CancellationToken cancellationToken)
     {
         Either<BaseError, Command> result = await mediator.Send(
-            new PrepareTroubleshootingPlayback(mediaItem, ffmpegProfile, watermark),
+            new PrepareTroubleshootingPlayback(mediaItem, ffmpegProfile, watermark, startFromBeginning),
             cancellationToken);
 
         return await result.MatchAsync<IActionResult>(
@@ -83,10 +85,12 @@ public class TroubleshootController(
         int ffmpegProfile,
         [FromQuery]
         int watermark,
+        [FromQuery]
+        bool startFromBeginning,
         CancellationToken cancellationToken)
     {
         Option<string> maybeArchivePath = await mediator.Send(
-            new ArchiveTroubleshootingResults(mediaItem, ffmpegProfile, watermark),
+            new ArchiveTroubleshootingResults(mediaItem, ffmpegProfile, watermark, startFromBeginning),
             cancellationToken);
 
         foreach (string archivePath in maybeArchivePath)

ErsatzTV/Pages/PlaybackTroubleshooting.razor

@@ -64,6 +64,12 @@
                     }
                 </MudSelect>
             </MudStack>
+            <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
+                <div class="d-flex">
+                    <MudText>Start From Beginning</MudText>
+                </div>
+                <MudCheckBox @bind-Value="_startFromBeginning" Dense="true" Disabled="@(string.Equals(_info?.Kind, "RemoteStream", StringComparison.OrdinalIgnoreCase))" />
+            </MudStack>
             <MudText Typo="Typo.h5" Class="mt-10 mb-2">Preview</MudText>
             <MudDivider Class="mb-6"/>
             <MudStack Row="true" Breakpoint="Breakpoint.SmAndDown" Class="form-field-stack gap-md-8 mb-5">
@@ -72,7 +78,7 @@
                            Color="Color.Primary"
                            StartIcon="@Icons.Material.Filled.PlayCircle"
                            Disabled="@(Locker.IsTroubleshootingPlaybackLocked() || _mediaItemId is null)"
-                           OnClick="PreviewChannel">
+                           OnClick="@PreviewChannel">
                     Play
                 </MudButton>
             </MudStack>
@@ -105,6 +111,7 @@
     private MediaItemInfo _info;
     private int _ffmpegProfileId;
     private int? _watermarkId;
+    private bool _startFromBeginning;
     private bool _hasPlayed;
 
     public void Dispose()
@@ -136,7 +143,7 @@
     {
         var uri = new UriBuilder(NavigationManager.ToAbsoluteUri(NavigationManager.Uri));
         uri.Path = uri.Path.Replace("/system/troubleshooting/playback", "/api/troubleshoot/playback.m3u8");
-        uri.Query = $"?mediaItem={_mediaItemId}&ffmpegProfile={_ffmpegProfileId}&watermark={_watermarkId ?? 0}";
+        uri.Query = $"?mediaItem={_mediaItemId}&ffmpegProfile={_ffmpegProfileId}&watermark={_watermarkId ?? 0}&startFromBeginning={_startFromBeginning}";
         await JsRuntime.InvokeVoidAsync("previewChannel", uri.ToString());
 
         await Task.Delay(TimeSpan.FromSeconds(1));
@@ -155,6 +162,7 @@
             foreach (MediaItemInfo info in maybeInfo.RightToSeq())
             {
                 _info = info;
+                _startFromBeginning = string.Equals(info.Kind, "RemoteStream", StringComparison.OrdinalIgnoreCase);
             }
 
             if (maybeInfo.IsLeft)
@@ -168,7 +176,7 @@
 
     private async Task DownloadResults()
     {
-        await JsRuntime.InvokeVoidAsync("window.open", $"api/troubleshoot/playback/archive?mediaItem={_mediaItemId ?? 0}&ffmpegProfile={_ffmpegProfileId}&watermark={_watermarkId ?? 0}");
+        await JsRuntime.InvokeVoidAsync("window.open", $"api/troubleshoot/playback/archive?mediaItem={_mediaItemId ?? 0}&ffmpegProfile={_ffmpegProfileId}&watermark={_watermarkId ?? 0}&startFromBeginning={_startFromBeginning}");
     }
 
     private void HandleTroubleshootingCompleted(PlaybackTroubleshootingCompletedNotification result)