hw transcoding issue 2160p HEVC HDR10 DTSHD 5.1

[sv3nno 2]

In the not working example you've selected PGS subtitles and as a result they have to burned in with transcoding. To make it a more equivalent comparison, try turning the subtitles off prior to playback. Please see if that helps. Thanks.

Yes sir!

 

I tried 5 minutes of playback with no subtitles. The result is really horrible, green frames/chopped frames, seems like its jumping back and forth between parts in the movie too.

FFmpeg log is attached.

not working file ffmpeg log 2.txt

[D34DC3N73R 18]

Here are a couple more logs, one from my remote server (intel qsv - VAAPI) and one from my local server (p2000 - NVDEC/NVENC). As you can see, this happens with a remux as well as a transcode.

ffmpeg-remux-a41d6c43-adc7-4ecf-b91f-f2e7bad06426_1.txt

ffmpeg-remux-4c2822a1-0ed1-4e9d-9d84-5780b01d43d2_1.txt

[softworkz 5066]

@D34DC3N73R

The last two logs show software encoding and decoding. When even that doesn't work, then there's most likely something wrong with the file.

[D34DC3N73R 18]

@softworkz

It's possible, but it plays fine in VLC locally, and plays fine in plex.

[softworkz 5066]

27 minutes ago, D34DC3N73R said:

@softworkz

It's possible, but it plays fine in VLC locally, and plays fine in plex.

OK, no - then ffmpeg should do it as well (when sw de- and en-coding)..

Let me re-think this tomorrow..

[vdatanet 1617]

Maybe it's related to this?

But I have to say I've only seen that remuxing not transcoding.

[softworkz 5066]

If you would be willing to try a beta version - today's beta includes a new decoder for testing that might fix this issue. 

It is called NVDEC.Ex and it is disabled by default:

You'd need to enable it and move it to the top.

[grbharati 2]

Hi Softworkz:

I can confirm that enabling NVDEC.Ex for my Quadro in v4.6.0.6 beta fixed the green glitch for transcoding 4k to 1080p. I was having green glitch screen in lots of 4k movies when transcoded to 1080p clients. I tested almost all of the movies I recall with the NVDEC.Ex and now I no longer see this green glitch issue in any of the movies so far. Transcoding is using: H.265 (HEVC)-NVENC/DEC to H.264(AVC)-NVENC/DEC.

 

Nice work and thank you.

 

Edited December 1, 2020 by grbharati

[Luke 42077]

Thanks for the feedback.

[sv3nno 2]

I have tested the new decoder in 4.5.4.0.

This has solved the issue for me as well. Thanks :)