Thumbnail Generator Fails with Fedora 33 using mpv

[Lacrocivious]

Yes, /tmp is drwxrwxrwt owned by root which is normal for linux so far as I know.

Not sure if I mentioned it but Video/Start/Stop screenshots works fine, though almost certainly unrelated to the thumbnailer failure.

[rvm]

Do you still have the problem if you change the option "extract frames" from jpg to png (or vice versa)?

[Lacrocivious]

Yes, same failure behavior whether .jpg or .png is selected for extracted frames.

[rvm]

[Lacrocivious]

Unfortunately, no 00000001.png is created. Instead, the command returns 'Aborted (core dumped)' as you can see below, and mpv crashes with ABRT reporting 'mpv quit unexpectedly'. I tried it with a .mp4 file and it failed the same way.

I tried this command several times while watching a filesystem display of /tmp in krusader root, and although a directory beginning 'systemd-private-<long hash>-upower.service-' appears briefly and disappears, no .png appears. I did a 'touch /tmp/00000001.png' from the same directory to make sure that worked, and it did.

I have a feeling this problem has very nearly nothing to do with SMPlayer itself.

_________________________

[17:44:57][<username>@kahaba:/pub/kahaba04/youtube-downloads]
$ mpv --no-config --no-audio --no-cache --hr-seek=yes --sid=no --frames=1 --framedrop=no --start=10 --video-aspect=1.77222 --vo-image-format=png --vo-image-outdir=/tmp/ --vo=image --vo-image-png-compression=0 The\ HU\ -\ Wolf\ Totem\ \(Official\ Music\ Video\)-jM8dCGIm6yc.webm
Warning: option --video-aspect was replaced with --video-aspect-override and might be removed in the future.
(+) Video --vid=1 (*) (vp9 3840x2160 24.000fps)
Audio --aid=1 --alang=eng (*) (opus 2ch 48000Hz)
[vo/image] Creating output directory '/tmp/'...
VO: [image] 3840x2160 => 3840x2166 yuv420p
[vo/image] Saving /tmp/00000001.png
mpv: ../video/zimg.c:241: repack_entrypoint: Assertion `!(i & (mp_repack_get_align_y(r->repack) - 1))' failed.
mpv: ../video/zimg.c:241: repack_entrypoint: Assertion `!(i & (mp_repack_get_align_y(r->repack) - 1))' failed.
Aborted (core dumped)
[15:05:32][<username>@kahaba:/pub/kahaba04/youtube-downloads]
$

_________________________

[rvm]

Yes, that definitely looks like a problem in mpv. However in my computer mpv 0.33 works fine with a similar video (same code, same resolution). So maybe it's not a bug in mpv itself but it may be a problem with one of the libraries it uses or the way it was compiled.

[Lacrocivious]

It's fixed!

SMPlayer Version: 21.1.0 (revision 9475)
Using Qt 5.15.2 (compiled with Qt 5.15.2)
Using MPV 0.33.0

Fedora 33 update today gives me a new version of SMPlayer and now the Thumbnail Generator works flawlessly once again. I am most pleased.

Did you fix it, or was it Leigh with mpv or something else? Can you explain to a non-coding moron what changed to reenable the generator?

[rvm]

I did nothing.
Maybe did they update mpv as well?

[Lacrocivious]

May have been this: