How do I batch convert mp3 or wav files to OPUS?

[IDK5]

I have a bunch of audio books that I would like to convert over to OPUS from MP3 but right now i have to type in "opusenc --vbr --bitrate 8 input.wav output.opus" which works fine but I have over 50,000 of these cause they are split by the chapter and I have to type that in every time for every file, so I am asking how I could convert them all in one go or even per folder.

[saratoga]

Use a program like foobar or dbpoweramp to convert them.

[IDK5]

I forgot to mention i am using openSUSE do they run on linux?

[saratoga]

Check google.

[bluebrother]

Code: [Select]

for i in *.wav; do opusenc --vbr --bitrate 8 "$i" "$(basename "$i".wav)".opus; done

Or use any other scripting language -- your question pretty much gives the answer. To batch convert files either use a tool that can do it or write a small batch script in any scripting language you like.

Edit: forgot the done part.

[IDK5]

Code: [Select]

for i in *.wav; do opusenc --vbr --bitrate 8 "$i" "$(basename "$i".wav)".opus; done

Thanks, too bad it is only using one thread. Is there anyway to have use more then the one?

[bluebrother]

Start it multiple times on different set of files? Just use different wildcards for each invocation (or use different folders, or ...). With a bit of additional things you can make that line also do the mp3 decoding etc.

[IDK5]

Start it multiple times on different set of files? Just use different wildcards for each invocation (or use different folders, or ...). With a bit of additional things you can make that line also do the mp3 decoding etc.

I started multiple ones, i am trying to figure out the mp3 decoding part so i don't have code them over to wav first that wast a lot of time. I am thinking about using ffmpeg.

EDIT: how would i have it go straight to encoding to opus from the mp3 to wav decode? or can i?

i have this right now but i don't know bash really well so it doesn't work but hopefully you know what i am trying to get done by reading it.

Code: [Select]

for m in *.mp3;do ffmpeg -i "$m" "$w"; opusenc --vbr --bitrate 15 "$w" "$(basename "$m")".opus;#rm -v *.mp3; done

[soap]

You do realize that by converting from MP3 to OPUS you are decreasing audio quality?