diff options
Diffstat (limited to 'MediaBrowser.Controller/MediaEncoding')
| -rw-r--r-- | MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs | 144 |
1 files changed, 90 insertions, 54 deletions
diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs index 9ebaef171d..a0e04eae63 100644 --- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs +++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs @@ -33,18 +33,18 @@ namespace MediaBrowser.Controller.MediaEncoding public partial class EncodingHelper { /// <summary> - /// The codec validation regex. + /// The codec validation regex string. /// This regular expression matches strings that consist of alphanumeric characters, hyphens, /// periods, underscores, commas, and vertical bars, with a length between 0 and 40 characters. /// This should matches all common valid codecs. /// </summary> - public const string ContainerValidationRegex = @"^[a-zA-Z0-9\-\._,|]{0,40}$"; + public const string ContainerValidationRegexStr = @"^[a-zA-Z0-9\-\._,|]{0,40}$"; /// <summary> - /// The level validation regex. + /// The level validation regex string. /// This regular expression matches strings representing a double. /// </summary> - public const string LevelValidationRegex = @"-?[0-9]+(?:\.[0-9]+)?"; + public const string LevelValidationRegexStr = @"-?[0-9]+(?:\.[0-9]+)?"; private const string _defaultMjpegEncoder = "mjpeg"; @@ -87,8 +87,6 @@ namespace MediaBrowser.Controller.MediaEncoding private readonly Version _minFFmpegRkmppHevcDecDoviRpu = new Version(7, 1, 1); private readonly Version _minFFmpegReadrateCatchupOption = new Version(8, 0); - private static readonly Regex _containerValidationRegex = new(ContainerValidationRegex, RegexOptions.Compiled); - private static readonly string[] _videoProfilesH264 = [ "ConstrainedBaseline", @@ -181,6 +179,22 @@ namespace MediaBrowser.Controller.MediaEncoding RemoveHdr10Plus, } + /// <summary> + /// The codec validation regex. + /// This regular expression matches strings that consist of alphanumeric characters, hyphens, + /// periods, underscores, commas, and vertical bars, with a length between 0 and 40 characters. + /// This should matches all common valid codecs. + /// </summary> + [GeneratedRegex(ContainerValidationRegexStr)] + public static partial Regex ContainerValidationRegex(); + + /// <summary> + /// The level validation regex string. + /// This regular expression matches strings representing a double. + /// </summary> + [GeneratedRegex(LevelValidationRegexStr)] + public static partial Regex LevelValidationRegex(); + [GeneratedRegex(@"\s+")] private static partial Regex WhiteSpaceRegex(); @@ -406,7 +420,9 @@ namespace MediaBrowser.Controller.MediaEncoding } return state.VideoStream.VideoRange == VideoRange.HDR - && IsDoviWithHdr10Bl(state.VideoStream); + && (state.VideoStream.VideoRangeType == VideoRangeType.HDR10 + || IsHdr10Plus(state.VideoStream) + || IsDoviWithHdr10Bl(state.VideoStream)); } private bool IsVideoToolboxTonemapAvailable(EncodingJobInfo state, EncodingOptions options) @@ -421,8 +437,10 @@ namespace MediaBrowser.Controller.MediaEncoding // Certain DV profile 5 video works in Safari with direct playing, but the VideoToolBox does not produce correct mapping results with transcoding. // All other HDR formats working. return state.VideoStream.VideoRange == VideoRange.HDR - && (IsDoviWithHdr10Bl(state.VideoStream) - || state.VideoStream.VideoRangeType is VideoRangeType.HLG); + && (state.VideoStream.VideoRangeType == VideoRangeType.HDR10 + || IsHdr10Plus(state.VideoStream) + || IsDoviWithHdr10Bl(state.VideoStream) + || state.VideoStream.VideoRangeType == VideoRangeType.HLG); } private bool IsVideoStreamHevcRext(EncodingJobInfo state) @@ -477,7 +495,7 @@ namespace MediaBrowser.Controller.MediaEncoding return GetMjpegEncoder(state, encodingOptions); } - if (_containerValidationRegex.IsMatch(codec)) + if (ContainerValidationRegex().IsMatch(codec)) { return codec.ToLowerInvariant(); } @@ -518,7 +536,7 @@ namespace MediaBrowser.Controller.MediaEncoding public static string GetInputFormat(string container) { - if (string.IsNullOrEmpty(container) || !_containerValidationRegex.IsMatch(container)) + if (string.IsNullOrEmpty(container) || !ContainerValidationRegex().IsMatch(container)) { return null; } @@ -736,7 +754,7 @@ namespace MediaBrowser.Controller.MediaEncoding { var codec = state.OutputAudioCodec; - if (!_containerValidationRegex.IsMatch(codec)) + if (!ContainerValidationRegex().IsMatch(codec)) { codec = "aac"; } @@ -1603,13 +1621,25 @@ namespace MediaBrowser.Controller.MediaEncoding mbbrcOpt = " -mbbrc 1"; } + // Some less powerful H.264 HW decoders require strict CPB size + // So bufsize optimizations should not be applied to them + int factor = 2; + var codec = state.ActualOutputVideoCodec; + var level = state.GetRequestedLevel(codec); + if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase) + && double.TryParse(level, CultureInfo.InvariantCulture, out double requestedLevel) + && requestedLevel < 51) + { + factor = 1; + } + // Set (maxrate == bitrate + 1) to trigger VBR for better bitrate allocation // Set (rc_init_occupancy == 2 * bitrate) and (bufsize == 4 * bitrate) to deal with drastic scene changes // Use long arithmetic and clamp to int.MaxValue to prevent int32 overflow // (e.g. bitrate * 4 wraps to a negative value for bitrates above ~537 million) int qsvMaxrate = (int)Math.Min((long)bitrate + 1, int.MaxValue); - int qsvInitOcc = (int)Math.Min((long)bitrate * 2, int.MaxValue); - int qsvBufsize = (int)Math.Min((long)bitrate * 4, int.MaxValue); + int qsvInitOcc = (int)Math.Min((long)bitrate * 1 * factor, int.MaxValue); + int qsvBufsize = (int)Math.Min((long)bitrate * 2 * factor, int.MaxValue); return FormattableString.Invariant($"{mbbrcOpt} -b:v {bitrate} -maxrate {qsvMaxrate} -rc_init_occupancy {qsvInitOcc} -bufsize {qsvBufsize}"); } @@ -1790,38 +1820,40 @@ namespace MediaBrowser.Controller.MediaEncoding public static string NormalizeTranscodingLevel(EncodingJobInfo state, string level) { - if (double.TryParse(level, CultureInfo.InvariantCulture, out double requestLevel)) + if (!double.TryParse(level, CultureInfo.InvariantCulture, out double requestLevel)) { - if (string.Equals(state.ActualOutputVideoCodec, "av1", StringComparison.OrdinalIgnoreCase)) + return null; + } + + if (string.Equals(state.ActualOutputVideoCodec, "av1", StringComparison.OrdinalIgnoreCase)) + { + // Transcode to level 5.3 (15) and lower for maximum compatibility. + // https://en.wikipedia.org/wiki/AV1#Levels + if (requestLevel < 0 || requestLevel >= 15) { - // Transcode to level 5.3 (15) and lower for maximum compatibility. - // https://en.wikipedia.org/wiki/AV1#Levels - if (requestLevel < 0 || requestLevel >= 15) - { - return "15"; - } + return "15"; } - else if (string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase) - || string.Equals(state.ActualOutputVideoCodec, "h265", StringComparison.OrdinalIgnoreCase)) + } + else if (string.Equals(state.ActualOutputVideoCodec, "hevc", StringComparison.OrdinalIgnoreCase) + || string.Equals(state.ActualOutputVideoCodec, "h265", StringComparison.OrdinalIgnoreCase)) + { + // Transcode to level 5.0 and lower for maximum compatibility. + // Level 5.0 is suitable for up to 4k 30fps hevc encoding, otherwise let the encoder to handle it. + // https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding_tiers_and_levels + // MaxLumaSampleRate = 3840*2160*30 = 248832000 < 267386880. + if (requestLevel < 0 || requestLevel >= 150) { - // Transcode to level 5.0 and lower for maximum compatibility. - // Level 5.0 is suitable for up to 4k 30fps hevc encoding, otherwise let the encoder to handle it. - // https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding_tiers_and_levels - // MaxLumaSampleRate = 3840*2160*30 = 248832000 < 267386880. - if (requestLevel < 0 || requestLevel >= 150) - { - return "150"; - } + return "150"; } - else if (string.Equals(state.ActualOutputVideoCodec, "h264", StringComparison.OrdinalIgnoreCase)) + } + else if (string.Equals(state.ActualOutputVideoCodec, "h264", StringComparison.OrdinalIgnoreCase)) + { + // Transcode to level 5.1 and lower for maximum compatibility. + // h264 4k 30fps requires at least level 5.1 otherwise it will break on safari fmp4. + // https://en.wikipedia.org/wiki/Advanced_Video_Coding#Levels + if (requestLevel < 0 || requestLevel >= 51) { - // Transcode to level 5.1 and lower for maximum compatibility. - // h264 4k 30fps requires at least level 5.1 otherwise it will break on safari fmp4. - // https://en.wikipedia.org/wiki/Advanced_Video_Coding#Levels - if (requestLevel < 0 || requestLevel >= 51) - { - return "51"; - } + return "51"; } } @@ -2211,12 +2243,10 @@ namespace MediaBrowser.Controller.MediaEncoding } } - var level = state.GetRequestedLevel(targetVideoCodec); + var level = NormalizeTranscodingLevel(state, state.GetRequestedLevel(targetVideoCodec)); if (!string.IsNullOrEmpty(level)) { - level = NormalizeTranscodingLevel(state, level); - // libx264, QSV, AMF can adjust the given level to match the output. if (string.Equals(videoEncoder, "h264_qsv", StringComparison.OrdinalIgnoreCase) || string.Equals(videoEncoder, "libx264", StringComparison.OrdinalIgnoreCase)) @@ -2614,8 +2644,16 @@ namespace MediaBrowser.Controller.MediaEncoding } } - // Cap the max target bitrate to intMax/2 to satisfy the bufsize=bitrate*2. - return Math.Min(bitrate ?? 0, int.MaxValue / 2); + // Cap the max target bitrate to 400 Mbps. + // No consumer or professional hardware transcode target exceeds this value + // (Intel QSV tops out at ~300 Mbps for H.264; HEVC High Tier Level 5.x is ~240 Mbps). + // Without this cap, plugin-provided MPEG-TS streams with no usable bitrate metadata + // can produce unreasonably large -bufsize/-maxrate values for the encoder. + // Note: the existing FallbackMaxStreamingBitrate mechanism (default 30 Mbps) only + // applies when a LiveStreamId is set (M3U/HDHR sources). Plugin streams and other + // sources that bypass the LiveTV pipeline are not covered by it. + const int MaxSaneBitrate = 400_000_000; // 400 Mbps + return Math.Min(bitrate ?? 0, MaxSaneBitrate); } private int GetMinBitrate(int sourceBitrate, int requestedBitrate) @@ -6381,17 +6419,15 @@ namespace MediaBrowser.Controller.MediaEncoding } // Block unsupported H.264 Hi422P and Hi444PP profiles, which can be encoded with 4:2:0 pixel format - if (string.Equals(videoStream.Codec, "h264", StringComparison.OrdinalIgnoreCase)) + if (string.Equals(videoStream.Codec, "h264", StringComparison.OrdinalIgnoreCase) + && ((videoStream.Profile?.Contains("4:2:2", StringComparison.OrdinalIgnoreCase) ?? false) + || (videoStream.Profile?.Contains("4:4:4", StringComparison.OrdinalIgnoreCase) ?? false))) { - if (videoStream.Profile.Contains("4:2:2", StringComparison.OrdinalIgnoreCase) - || videoStream.Profile.Contains("4:4:4", StringComparison.OrdinalIgnoreCase)) + // VideoToolbox on Apple Silicon has H.264 Hi444PP and theoretically also has Hi422P + if (!(hardwareAccelerationType == HardwareAccelerationType.videotoolbox + && RuntimeInformation.OSArchitecture.Equals(Architecture.Arm64))) { - // VideoToolbox on Apple Silicon has H.264 Hi444PP and theoretically also has Hi422P - if (!(hardwareAccelerationType == HardwareAccelerationType.videotoolbox - && RuntimeInformation.OSArchitecture.Equals(Architecture.Arm64))) - { - return null; - } + return null; } } |