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Preserve native broadcast video and add patient shared stream startup

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michal
2026-10-25 16:59:56 +01:00
parent bd7395f045
commit 11a34a5195
27 changed files with 708 additions and 139 deletions
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Tests/ResolutionE2E.cs
+11 -7
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@@ -40,8 +40,12 @@ public static class ResolutionE2E
{
foreach (var (name, size) in Sizes)
{
var media = await manager.Open(relay.Register($"http://127.0.0.1:{port}/fixture/{name}.ts"), "en", CancellationToken.None);
Require(media.MediaStreams[0].Width == null && media.MediaStreams[0].Height == null && media.MediaStreams[0].Level == null,
var dimensions = size.Split('x');
var tracks = LosslessSlateTests.Tracks(int.Parse(dimensions[0]), int.Parse(dimensions[1]), 25);
((BroadcastMediaStream)tracks.Input[0]).SampleAspectRatio = name == "sd" ? "16:15" : "1:1";
tracks = new BroadcastTracks(tracks.Input);
var media = await manager.Open(relay.Register($"http://127.0.0.1:{port}/fixture/{name}.ts"), "en", CancellationToken.None, tracks);
Require(media.MediaStreams[0].Width == tracks.Input[0].Width && media.MediaStreams[0].Height == tracks.Input[0].Height,
"source metadata does not falsely cap the channel at Full HD: " + name);
var target = Path.Combine(output, name); Directory.CreateDirectory(target);
var common = new[] { "-xerror", "-i", media.Path, "-t", "32", "-map", "0:v:0", "-map", "0:a:0", "-c", "copy" };
@@ -66,11 +70,11 @@ public static class ResolutionE2E
foreach (var arg in new[] { "-v", "error", "-threads", "1", "-select_streams", "v:0", "-show_entries", "frame=width,height,sample_aspect_ratio", "-of", "csv=p=0", Path.Combine(target, file) }) info.ArgumentList.Add(arg);
using var probe = Process.Start(info); var text = await probe.StandardOutput.ReadToEndAsync(); var error = await probe.StandardError.ReadToEndAsync(); await probe.WaitForExitAsync().WaitAsync(TimeSpan.FromSeconds(60));
Require(probe.ExitCode == 0 && string.IsNullOrWhiteSpace(error), "probe actual decoded dimensions: " + name + " " + file);
var dimensions = text.Split('\n').Where(line => line.Length > 0).Select(line => line.Trim()).Distinct().ToArray();
var decodedDimensions = text.Split('\n').Where(line => line.Length > 0).Select(line => line.Trim()).Distinct().ToArray();
var expected = size.Replace('x', ',') + ",";
Require(dimensions.Any(line => line.StartsWith(expected, StringComparison.Ordinal)), "native dimensions reach the decoded client frames: " + size);
if (name == "sd") Require(dimensions.Any(line => line.StartsWith(expected + "16:15", StringComparison.Ordinal)), "SD sample aspect ratio survives slate/live switching");
reports.Add(new { Profile = name, File = file, Dimensions = dimensions });
Require(decodedDimensions.Any(line => line.StartsWith(expected, StringComparison.Ordinal)), "native dimensions reach the decoded client frames: " + size);
if (name == "sd") Require(decodedDimensions.Any(line => line.StartsWith(expected + "16:15", StringComparison.Ordinal)), "SD sample aspect ratio survives slate/live switching");
reports.Add(new { Profile = name, File = file, Dimensions = decodedDimensions });
}
await Task.Delay(1500);
}
@@ -95,7 +99,7 @@ public static class ResolutionE2E
var filter = "color=c=0x085f21:s=" + size + ":r=25" + (name == "sd" ? ",setsar=16/15" : "");
var info = new ProcessStartInfo(encoder) { UseShellExecute = false, RedirectStandardError = true, RedirectStandardOutput = true };
foreach (var arg in new[] { "-hide_banner", "-loglevel", "error", "-nostdin", "-threads", "1", "-filter_threads", "1", "-re", "-f", "lavfi", "-i", filter,
"-f", "lavfi", "-i", "sine=frequency=440:sample_rate=48000", "-c:v", "libx264", "-threads", "1", "-preset", "ultrafast", "-g", "25", "-c:a", "aac", "-f", "mpegts", "pipe:1" }) info.ArgumentList.Add(arg);
"-f", "lavfi", "-i", "sine=frequency=440:sample_rate=48000", "-c:v", "libx264", "-threads", "1", "-preset", "ultrafast", "-g", "25", "-c:a", "aac", "-ac", "2", "-f", "mpegts", "pipe:1" }) info.ArgumentList.Add(arg);
using var process = Process.Start(info); process.ErrorDataReceived += (_, _) => { }; process.BeginErrorReadLine(); context.Response.ContentType = "video/mp2t";
try { await process.StandardOutput.BaseStream.CopyToAsync(context.Response.Body, context.RequestAborted); }
catch (OperationCanceledException) { } catch (IOException) { }