-acodec option not working in ffmpeg [closed]

Question

Before I was using this:

ffmpeg -i file1.avi -acodec vorbis file2.ogg

And everything go okay... And now, on this new server, I try this command, and I get return Successful conversion, but there is no file...

It works only when I write this way:

ffmpeg -i file1.avi file2.ogg

But then audio codec is flac, and that can't be played in video in html5...

I tried with different codecs, like 10 different from list, and only 3 of 10 are creating files, but files with 0 bytes size...

About:

ffmpeg 0.7-rc1
libavutil    50. 40. 1 / 50. 40. 1
libavcodec   52.120. 0 / 52.120. 0
libavformat  52.108. 0 / 52.108. 0
libavdevice  52.  4. 0 / 52.  4. 0
libavfilter   1. 77. 0 /  1. 77. 0
libswscale    0. 13. 0 /  0. 13. 0

All those codecs are enabled...

Any suggestion?

Answer 1

It really depends what version of ffmpeg you are using. The latest git version says this:

encoder 'vorbis' is experimental and might produce bad results. Add '-strict experimental' if you want to use it. Or use the non experimental encoder 'libvorbis'.

When I try:

ffmpeg -i file1.avi -acodec libvorbis file2.ogg

It works fine.