Fix thumbnailing small 4K video

Alban Browaeysrequested to merge
prahal/totem:fix-4k-thumbnailing into debian/latest

Bug report https://gitlab.gnome.org/GNOME/totem/-/issues/617 with more about it in https://gitlab.gnome.org/GNOME/totem/-/issues/589#note_2349479

Tested fixed by https://gitlab.gnome.org/GNOME/totem/-/merge_requests/425 merged upstream.

With https://gitlab.gnome.org/-/project/1855/uploads/f6777d58a81817ccdc06b8203d127225/out5.mp4 totem 43.1-3 before this MR:

totem-video-thumbnailer -v out5.mp4 tmp.png
TotemVideoThumbnailer-Message: 04:19:32.048: Initialised libraries, about to create video widget
TotemVideoThumbnailer-Message: 04:19:32.055: setting URI file:///home/prahal/Projects/WIP/totem-thumbnailer-fail/a/out5.mp4
TotemVideoThumbnailer-Message: 04:19:32.055: Video widget created
TotemVideoThumbnailer-Message: 04:19:32.055: About to open video file

(totem-video-thumbnailer:2406364): GLib-ERROR **: 04:19:32.209: ../../../glib/gmem.c:106: failed to allocate 25090759 bytes
Trappe pour point d'arrêt et de trace (core dumped)

after

totem-video-thumbnailer -v out5.mp4 tmp.png
TotemVideoThumbnailer-Message: 04:41:13.009: Initialised libraries, about to create video widget
TotemVideoThumbnailer-Message: 04:41:13.030: setting URI file:///home/prahal/Projects/WIP/totem-thumbnailer-fail/a/out5.mp4
TotemVideoThumbnailer-Message: 04:41:13.030: Video widget created
TotemVideoThumbnailer-Message: 04:41:13.030: About to open video file
TotemVideoThumbnailer-Message: 04:41:13.352: Checking whether file has cover
TotemVideoThumbnailer-Message: 04:41:13.353: Opened video file: 'out5.mp4'
TotemVideoThumbnailer-Message: 04:41:13.353: About to seek to 0,333333
TotemVideoThumbnailer-Message: 04:41:13.457: About to get frame for iter 0
TotemVideoThumbnailer-Message: 04:41:13.634: Frame for iter 0 was not interesting
TotemVideoThumbnailer-Message: 04:41:13.634: About to seek to 0,666667
TotemVideoThumbnailer-Message: 04:41:13.686: About to get frame for iter 1
TotemVideoThumbnailer-Message: 04:41:13.840: Frame for iter 1 was not interesting
TotemVideoThumbnailer-Message: 04:41:13.840: About to seek to 0,100000
TotemVideoThumbnailer-Message: 04:41:13.901: About to get frame for iter 2
TotemVideoThumbnailer-Message: 04:41:14.047: Frame for iter 2 was not interesting
TotemVideoThumbnailer-Message: 04:41:14.047: About to seek to 0,900000
TotemVideoThumbnailer-Message: 04:41:14.113: About to get frame for iter 3
TotemVideoThumbnailer-Message: 04:41:14.243: Frame for iter 3 was not interesting
TotemVideoThumbnailer-Message: 04:41:14.243: About to seek to 0,500000
TotemVideoThumbnailer-Message: 04:41:14.293: About to get frame for iter 4
TotemVideoThumbnailer-Message: 04:41:14.436: Frame for iter 4 was not interesting
TotemVideoThumbnailer-Message: 04:41:14.467: Saving captured screenshot to tmp.png

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