[Bug Report] No Scene Previews since last few pre-release

[ghfsa]

Bug description
Since the last few pre-releases I'm not able to view Scene Previews created by those versions. Preview generated by last stable version (v13.1) or before could be seen though.

Stash Version: (any pre-releases after stable13.1):

Desktop:

• OS: Windows 8.1
• Browser: Firefox
• Version: 98.0.2

[WithoutPants]

Check the value of setting Generated file naming hash. In most cases this should be oshash, but there is a latent bug where this value gets changed. You will also need to verify that the preview files are correctly located in the generated/screenshots directory.

[ghfsa]

Check the value of setting Generated file naming hash. ... verify that the preview files are correctly located in the generated/screenshots directory.

settings seem to be fine. Path & ohash unchanged beween versions.

[gatt70]

I upgraded recently and now scene previews aren't being generated for me either. The old ones still work fine. Here is a sample log:

22-03-24 22:05:49 Warning [generator] failed generating scene preview, trying fallback 2022-03-24 22:05:49 Error ffmpeg error when running command <C:\Program Files\FFmpeg\bin\ffmpeg.exe -v error -f concat -i H:\Archive\stash\generated\tmp\files_602553099e848b7a.txt -y -c copy H:\Archive\stash\generated\screenshots\602553099e848b7a.mp4>: [concat @ 00000233edeae440] Impossible to open 'H:preview_602553099e848b7a_000.mp4' H:\Archive\stash\generated\tmp\files_602553099e848b7a.txt: No such file or directory 2022-03-24 22:05:43 Info [generator] generating scene preview for \\path\filename.mp4

[bnkai]

I upgraded recently and now scene previews aren't being generated for me either. The old ones still work fine. Here is a sample log:

22-03-24 22:05:49 Warning [generator] failed generating scene preview, trying fallback 2022-03-24 22:05:49 Error ffmpeg error when running command <C:\Program Files\FFmpeg\bin\ffmpeg.exe -v error -f concat -i H:\Archive\stash\generated\tmp\files_602553099e848b7a.txt -y -c copy H:\Archive\stash\generated\screenshots\602553099e848b7a.mp4>: [concat @ 00000233edeae440] Impossible to open 'H:preview_602553099e848b7a_000.mp4' H:\Archive\stash\generated\tmp\files_602553099e848b7a.txt: No such file or directory 2022-03-24 22:05:43 Info [generator] generating scene preview for \\path\filename.mp4

Is C:\Program Files\FFmpeg\bin\ffmpeg.exe the ffmpeg you used before or not? There was a similar issue mentioned recently in discord and it seems that for some reason the ffmpeg used is not the correct one. Can you double check either the folder that you run stash from or where you have the config.yml and see if you have both ffmpeg.exe and ffprobe.exe there? If you dont you can download from here https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip (that is where stash downloads the windows binaries from) and unzip the ffmpeg.exe and ffprobe.exe to the stash folder?

[WithoutPants]

Confirmed bug with preview generation code on Windows.