@joklok

Nice, it works !

Bellow the bash used,
Lines 2 and 3 have to be changed depending the result of your first line.

$> sudo find / -name "*libffmpeg.so*" 2>/dev/null
/usr/lib/x86_64-linux-gnu/opera/libffmpeg.so
/snap/chromium/1557/usr/lib/chromium-browser/libffmpeg.so
/snap/chromium/1558/usr/lib/chromium-browser/libffmpeg.so

$> sudo mv /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so /tmp/
$> sudo cp /snap/chromium/1557/usr/lib/chromium-browser/libffmpeg.so /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so

@joklok

Nice, it works !

Bellow the bash used,
Lines 2 and 3 have to be changed depending the result of your first line.

$> sudo find / -name "*libffmpeg.so*" 2>/dev/null
/usr/lib/x86_64-linux-gnu/opera/libffmpeg.so
/snap/chromium/1557/usr/lib/chromium-browser/libffmpeg.so
/snap/chromium/1558/usr/lib/chromium-browser/libffmpeg.so

$> sudo mv /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so /tmp/
$> sudo cp /snap/chromium/1557/usr/lib/chromium-browser/libffmpeg.so /usr/lib/x86_64-linux-gnu/opera/libffmpeg.so

@hyun-shik thanks, yes should be usefull
On FB, a lot of private group, can't share, I don't find a correct and public example right now. So sorry for this link ...

https://fb.watch/4_jPCUzkMM/

On twitter, for ex
https://twitter.com/arielbogle/status/1384376555711844352
https://twitter.com/TheDGstory/status/1382719510290034693
https://twitter.com/WHO/status/1384432299660480512

Dear all

Small problem:
On multiple computers I have, Opera Browser do not run most of twitter and Facebook video.
The same video is OK on Firefox
Youtube video works on Opera.

I post as it doesn't seam to be a known limitation of opera.
After reading standard tricks, I created a new user with an empty dir, not logued on opera, I had the same problem so I suppose it's not a settings problem on my account or a corrupted pref file

Is there a missing codec or plugin ?

Many thanks

Nicolas

"Ubuntu 20.04.2 LTS"
opera-stable 75.0.3969.93 amd64
#dpkg -l |grep ffmp
chromium-codecs-ffmpeg-extra 1:85.0.4183.83-0ubuntu0.20.04.2 amd64
ffmpeg 7:4.2.4-1ubuntu0.1 amd64
gstreamer1.0-libav:amd64 1.16.2-2 amd64
gstreamer1.0-libav-dbg:amd64 1.16.2-2 amd64

Hi all

$ dpkg -l |grep opera
opera-beta 71.0.3770.126 amd64
opera-stable 71.0.3770.148 amd64
$ cat /etc/lsb-release
DISTRIB_DESCRIPTION="Ubuntu 20.04.1 LTS"

Multiple try, no sound on FB video.
Same on beta and stable version, but the same FB video have sound on Firefox.
Youtube on Opera works with sound.

Any Idea ?

Many thanks !