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Enable software tonemap for dolby vision

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This applies software tonemapx filter for dolby vision videos that have no compatability fallback.

Due to the complexity of the reshaping process, this is quite CPU-intensive. For real-time transcoding and tonemapping of 4K 60fps content, a CPU with 16 cores of Zen3-level performance is recommended.

Signed-off-by: gnattu <gnattuoc@me.com>
This commit is contained in:
gnattu
2024-09-03 14:39:05 +08:00
parent 7207749044
commit ae82a4eee0
2 changed files with 20 additions and 11 deletions
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9
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@@ -12,6 +12,7 @@ using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using AsyncKeyedLock;
using Jellyfin.Data.Enums;
using Jellyfin.Extensions;
using Jellyfin.Extensions.Json;
using Jellyfin.Extensions.Json.Converters;
@@ -665,18 +666,18 @@ namespace MediaBrowser.MediaEncoding.Encoder
filters.Add("thumbnail=n=" + (useLargerBatchSize ? "50" : "24"));
}
// Use SW tonemap on HDR10/HLG video stream only when the zscale or tonemapx filter is available.
// Use SW tonemap on HDR video stream only when the zscale or tonemapx filter is available.
// Only enable Dolby Vision tonemap when tonemapx is available
var enableHdrExtraction = false;
if (string.Equals(videoStream?.ColorTransfer, "smpte2084", StringComparison.OrdinalIgnoreCase)
|| string.Equals(videoStream?.ColorTransfer, "arib-std-b67", StringComparison.OrdinalIgnoreCase))
if (videoStream?.VideoRange == VideoRange.HDR)
{
if (SupportsFilter("tonemapx"))
{
enableHdrExtraction = true;
filters.Add("tonemapx=tonemap=bt2390:desat=0:peak=100:t=bt709:m=bt709:p=bt709:format=yuv420p");
}
else if (SupportsFilter("zscale"))
else if (SupportsFilter("zscale") && videoStream.VideoRangeType != VideoRangeType.DOVI)
{
enableHdrExtraction = true;
filters.Add("zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0:peak=100,zscale=t=bt709:m=bt709,format=yuv420p");