2
I'm trying to convert a set of .PNG files and a .WAV file into an Ogg Vorbis video using ffmpeg on Windows 7. When I run "ffmpeg -codecs" I can see libvorbis listed, but when I try to use it in a command:
ffmpeg.exe -f image2 -r 1 -i "dir\%04d.png" -i "dir\audio.wav" -vcodec libvorbis -r 25 out.ogv
I get the error:
Invalid encoder type 'libvorbis'
parsley72
Posted 2014-07-06T05:44:23.290
Reputation: 940
2
Well, Vorbis is not video. It's an audio codec, typically embedded in the Ogg container format. Maybe that's where the confusion comes from.
You want to use Theora with libtheora. Also, you should specify both video and audio codecs, rather than having ffmpeg choose one. I typically add -shortest to tell ffmpeg to stop encoding whenever there are no more images or the audio track is finished.
ffmpeg -f image2 -r 1 -i "dir\%04d.png" -i "dir\audio.wav" -c:v libtheora -c:a libvorbis -shortest -r 25 out.ogv
Check the Theora/Vorbis encoding guide for quality options.
slhck
Posted 2014-07-06T05:44:23.290
Reputation: 182 472
Wow, the .mp4 file is 10.2MB. The same data in .ogv is 87.6MB. – parsley72 – 2014-07-12T22:23:20.237
Ah, removing the "-r 25" brings it down to 16.4MB. – parsley72 – 2014-07-12T22:31:08.110
The file size depends on the quality too. You have to experiment with that. – slhck – 2014-07-13T11:09:57.870