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@@ -385,6 +385,19 @@ public class MediaInfoHelper
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/// <returns>A <see cref="Task"/> containing the <see cref="LiveStreamResponse"/>.</returns>
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public async Task<LiveStreamResponse> OpenMediaSource(HttpContext httpContext, LiveStreamRequest request)
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{
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+ // Enforce more restrictive transcoding profile for LiveTV due to compatability reasons
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+ // Cap the MaxStreamingBitrate to 20Mbps, because we are unable to reliably probe source bitrate,
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+ // which will cause the client to request extremely high bitrate that may fail the player/encoder
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+ request.MaxStreamingBitrate = request.MaxStreamingBitrate > 20000000 ? 20000000 : request.MaxStreamingBitrate;
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+
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+ if (request.DeviceProfile is not null)
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+ {
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+ // Remove all fmp4 transcoding profiles, because it causes playback error and/or A/V sync issues
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+ // Notably: Some channels won't play on FireFox and LG webOs
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+ // Some channels from HDHomerun will experience A/V sync issues
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+ request.DeviceProfile.TranscodingProfiles = request.DeviceProfile.TranscodingProfiles.Where(p => !string.Equals(p.Container, "mp4", StringComparison.OrdinalIgnoreCase)).ToArray();
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+ }
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+
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var result = await _mediaSourceManager.OpenLiveStream(request, CancellationToken.None).ConfigureAwait(false);
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var profile = request.DeviceProfile;
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gnattu