If you do not get the file from your system, you can extract the file from the chromium package. Follow below instructions to get the package. Original post. Copied here, just in case owner decides to delete the gist.
This short instruction shows how to install libffmpeg.so
in vivaldi to play e.g. mp4 videos.
I use the ubuntu repository for that but this is just one way to get the file.
Go to http://security.ubuntu.com/ubuntu/pool/universe/c/chromium-browser/ and choose the latest chromium-codecs-ffmpeg-extra
and download it.
For example: chromium-codecs-ffmpeg-extra_58.0.3029.110-0ubuntu1.1354_amd64.deb
The library is in a tar.xz
ball inside the .deb
file. Extraxt it with
ar x <your-deb-file> data.tar.xz
Now you have the data.tar.xz
file next to your .deb
file.
Just use tar
with tar -xJf data.tar.xz --strip-components=4 ./usr/lib/chromium-browser/libffmpeg.so
to do so. There is now the file libffmpeg.so
next to the data.tar.xz
.
Check where vivaldi is and copy the library to this directory.
E.g. cp ./libffmpeg.so /opt/vivaldi/lib/