[packman] Re: [PM] ffmpeg 0.4.9 (openSUSE 10.2/i686)

Manfred Tremmel manfred at links2linux.de
Mon Oct 29 19:45:57 CET 2007

Am Montag, 29. Oktober 2007 schrieb Aurelio Grego:
> Hi Manfred,
> when I try to encode an avi file in mp4 format using ffmpeg, I get an
> error message:
> "Unknown encoder 'mpeg4aac'"
> This is the command options I used:
> "ffmpeg -vcodec mpeg4 -b 300 -qmin 3 -qmax 5 -bufsize 4096 -g 300
> -acodec mpeg4aac -ab 96 -i /home/aurelio/Festival.divx -s 320x240
> -aspect 4:3 /home/aurelio/Festival.mp4"

This syntax is outdated, the aac endocder is named libfaac now. 
All bitrates are used like given, so 300 is 300 bit and not 300 kbit, 
like in the past, so you should add a k (300k vor video and 96k vor 
So this one should work:
"ffmpeg -vcodec mpeg4 -b 300k -qmin 3 -qmax 5 -bufsize 4096 -g 300
-acodec libfaac -ab 96k -i /home/aurelio/Festival.divx -s 320x240
-aspect 4:3 /home/aurelio/Festival.mp4"

> The same sintax let me encode the file when I use videolan ffmpeg
> version, but this version has no support for amr audio.

Yes, they use a very old version, so it works there.

Machs gut    | http://www.iivs.de/schwinde/buerger/tremmel/

Manfred      | http://packman.links2linux.de/

More information about the Packman mailing list