Output file is not playable on Windows

Does rendering the same project without using Voukoder produce a playable file?

Log file?

You are probably using non-standard settings. Can you detail exactly what you are doing?

In Davinci Resolve Studio (18.5 beta), If change some parameters in HEVC (NVIDIA NVENC) via Voukoder 13.1 version, the output file will NOT play also. (in Windows 11)

But if uninstall version 13.1 and install back to version 13, the output file will play.

Parameters example:

Bit depth: YUV 4:2:0 (10bit)

Preset: Slow (good quality)

Profile: Main

Tier: High

Strategy: Constant Quantizer (QP)

Quantizer: 15

Multipass: Full Resolution

Tune: High Quality

in the buttom window, shows the advanced options as following:

____________________________

gpu=0 level=6.2 multipass=fullres nonref_p=1 preset=p5 profile=main10 qp=15 rc=constqp spatial-aq=1 temporal-aq=1 tier=high tune=hq

____________________________

What are your output resolution and framerate?

Confirmed the issue. All renders that I tried, using my known good presets, produced unplayable video files. My presets all use NVENC in h.264 and h.265 formats, various settings, various resolutions and framerates. Sound plays okay, but there is only a still image throughout. Sometimes you get a file which will produce a new still image every time you seek, but picture never moves.

The problem seems limited to Voukoder 13.1, and affects both my Vegas Pro versions 15.0 and 20.0. I didn't try Vegas Pro 12.0, but presumably the same. Rolling back to Voukoder 13.0.2 fixed the problem. See logs below. If you want me to upload video files, I might be able to. Not sure what the site's download limit is . . .

bicycling temp - non-functional Vegas 15.0 - connector 1.5.0 - Voukoder 13.1.log.txt

bicycling temp - non-functional Vegas 20.0 - connector 1.6.0 - Voukoder 13.1.log.txt

bicycling temp - working Vegas 15.0 - connector 1.5.0 - Voukoder 13.0.log.txt

bicycling temp - working Vegas 20.0 - connector 1.6.0 - Voukoder 13.0.log.txt

Zitat von Vouk

Does this version fix the issue?

https://github.com/Vouk/voukoder/…r-13.2beta1.msi

No.

bicycling temp - voukoder 13.2beta1.log.txt

bicycling short - Voukoder 13.2beta1.zip

Both VLC 3.0.18 64-bit and Windows 10 Media Player. Both programs will play video encoded by Voukoder 13.0.2, and both programs refuse to play video from Voukoder 13.1 and 13.2beta1.

Something obviously changed somewhere. Hardware, Vegas, and drivers have not changed, so the problem lies elsewhere.

Is there a setting in the new FFmpeg version that uses a different syntax or has a different default? Or perhaps there's a new feature which has a default setting that breaks everything?

The video clip (above) uses a custom preset that is Blu-ray compatible, but I have not tested BD-compatibility of renders using Voukoder 13.1+. I'm away from home at the moment, and unable to do so. Where I'm going with this is: Is there a way to test what h.264 profile/level is actually being used in the encoded file?

The fact that this affects both h.264 and h.265 is interesting. Whatever is broken is evidently shared by both formats.

I noticed in the unplayable file logs that there are numerous messages like this:

FFmpeg: Delay between the first packet and last packet in the muxing queue is 10016000 > 10000000: forcing output

These messages do not appear in the logs of the playable files. Did FFmpeg change bit resolution of any arguments?

On a hunch, I rendered the same 10-second video project as above, using every available Voukoder audio format. The only thing that I changed was the audio format; video settings are identical to the clip posted above. All tests done with Vegas Pro 20.0 / Voukoder 13.2beta1.

Results varied widely, and none worked properly except Uncompressed PCM. All PCM bit depths work, 16/24/32-bit.

Rendering using AAC, AC3, MP3, EAC-3 (DD+), and Vorbis yields files where the video does not move on the screen, although the audio plays.

ALAC format gives a video that plays, but no audio except the last 1 second.

Dolby TrueHD crashes Vegas after 39 rendered frames. See screenshot.

DTS yields a 1m50s file (remember the project is only 10s) that will never stop playing in VLC. Video plays, but picture stops moving at 10s. No audio except brief blips at ~6.5s and ~9.5s.

FLAC yields a 1m50s file. Video plays but picture stops moving at 10s. Brief (~0.5s) audio at beginning of track, then no audio until last 10s of file (i.e., audio plays from about 1m40s to 1m50s).

MP2 audio format gives a video that plays, but no audio except the last 2 seconds.

WAVPACK format gives a video that plays, but no audio except the last 1 second.

Log files: Voukoder logs 20230710.zip

Update: All of the above formats tested and working properly in Voukoder 13.0.2 except Dolby TrueHD which still crashes Vegas, and DTS which produces a 10s (not 1m50s as above) infinitely-playing track where the video stops after 10s and with no audio except brief blips from time to time.