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Tiny optimizations for FFmpeg 6.0

This commit is contained in:
nyanmisaka 2023-03-03 00:24:43 +08:00
parent 5fdea32dca
commit c94a99fced
1 changed files with 12 additions and 2 deletions
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14
MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
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@ -41,6 +41,9 @@ namespace MediaBrowser.Controller.MediaEncoding
private readonly Version _maxKerneli915Hang = new Version(6, 1, 3);
private readonly Version _minFixedKernel60i915Hang = new Version(6, 0, 18);
private readonly Version _minFFmpegImplictHwaccel = new Version(6, 0);
private readonly Version _minFFmpegHwaUnsafeOutput = new Version(6, 0);
private static readonly string[] _videoProfilesH264 = new[]
{
"ConstrainedBaseline",
@ -4562,13 +4565,19 @@ namespace MediaBrowser.Controller.MediaEncoding
var isVideotoolboxSupported = isMacOS && _mediaEncoder.SupportsHwaccel("videotoolbox");
var isCodecAvailable = options.HardwareDecodingCodecs.Contains(videoCodec, StringComparison.OrdinalIgnoreCase);
var ffmpegVersion = _mediaEncoder.EncoderVersion;
// Set the av1 codec explicitly to trigger hw accelerator, otherwise libdav1d will be used.
var isAv1 = string.Equals(videoCodec, "av1", StringComparison.OrdinalIgnoreCase);
var isAv1 = ffmpegVersion < _minFFmpegImplictHwaccel
&& string.Equals(videoCodec, "av1", StringComparison.OrdinalIgnoreCase);
// Allow profile mismatch if decoding H.264 baseline with d3d11va and vaapi hwaccels.
var profileMismatch = string.Equals(videoCodec, "h264", StringComparison.OrdinalIgnoreCase)
&& string.Equals(state.VideoStream?.Profile, "baseline", StringComparison.OrdinalIgnoreCase);
// Disable the extra internal copy in nvdec. We already handle it in filter chain.
var nvdecNoInternalCopy = ffmpegVersion >= _minFFmpegHwaUnsafeOutput;
if (bitDepth == 10 && isCodecAvailable)
{
if (string.Equals(videoCodec, "hevc", StringComparison.OrdinalIgnoreCase)
@ -4622,7 +4631,8 @@ namespace MediaBrowser.Controller.MediaEncoding
if (options.EnableEnhancedNvdecDecoder)
{
// set -threads 1 to nvdec decoder explicitly since it doesn't implement threading support.
return " -hwaccel cuda" + (outputHwSurface ? " -hwaccel_output_format cuda" : string.Empty) + " -threads 1" + (isAv1 ? " -c:v av1" : string.Empty);
return " -hwaccel cuda" + (outputHwSurface ? " -hwaccel_output_format cuda" : string.Empty)
+ (nvdecNoInternalCopy ? " -hwaccel_flags +unsafe_output" : string.Empty) + " -threads 1" + (isAv1 ? " -c:v av1" : string.Empty);
}
else
{