Find thumbnail [a.k.a. cover/poster. For MP4; not just WebM]

[deldesir]

This is a fix for the missing cover bug when an 'mp4' video file is downloaded. Smoke and feature tested on Ubuntu 24.04 (10.8.0.18).

[holta]

This PR builds on:

• PR Make covers square #2
• PR Fix missing cover [for MP4; not just WebM] #59

Related:

• MP4 files failed to upload [WebM too, for large video files?] #61

[holta]

Looks far better!!

A separate bug is the description(s) full text/paragraphs now appear missing — see the screenshot above — apparently due to an upstream change or regression in xklb ?

root@box:~# yt-dlp --version
2023.11.16
root@box:~# lb --version
2.2.186
root@box:~# hostname -I
10.181.233.245 192.168.0.117 10.8.0.46 fd42:fb6b:9c93:d2f1:5054:ff:fe1b:116f
root@box:~# hostname -A
t4.lxd box box t4.lxd
root@box:~# cat /etc/issue
Ubuntu Noble Numbat (development branch) \n \l```

[holta]

@deldesir can you explain why cover/poster/thumbnail is missing after downloading... ?

• youtu.be/_-i_0_h4BF8
• https://youtu.be/_-i_0_h4BF8
• https://www.youtube.com/watch?v=_-i_0_h4BF8

root@box:~# yt-dlp --version
2023.11.16
root@box:~# lb --version
2.2.189
root@box:~# hostname -I
10.181.233.245 192.168.0.117 10.8.0.46 fd42:fb6b:9c93:d2f1:5054:ff:fe1b:116f
root@box:~# hostname -A
t4.lxd box box t4.lxd
root@box:~# cat /etc/issue
Ubuntu Noble Numbat (development branch) \n \l

[deldesir]

Thanks @holta for catching this. The logic was a bit loose comparing files without taking extensions into consideration. Fixed in #69.