[MEncoder-users] Remuxing to mp4 on windows
James Hastings-Trew
jimht at shaw.ca
Fri May 9 15:20:22 CEST 2008
Raimund Berger wrote:
> Interesting. The only pitfall I've encountered when encoding to AAC
> with mencoder is that the faac object/mpeg options get defaults
> different from those of (standalone) faac itself, producing
> problematic audio files.
>
> I think it was the MAIN object type complexity which led to kind of
> distorted audio on playback, and the MPEG version flag 2 which could
> cause compatibility problems. Don't ask me about details though.
>
> Anyway, when reproducing the faac defaults with mencoder options
>
> # LOW complexity, MPEG 4
> -faacopts br=whatever_number:object=2:mpeg=4
>
> I could always encode video/audio simultaneously to AVC/AAC with
> mencoder into one avi and demux as described above. Gave me both valid
> video and audio files MP4Box was happy with.
>
I had -oac faac -faacopts mpeg=4:object=2:br=160:raw
and the same without ":raw" in there, and neither one produced an aac
audio file that mp4box was happy with. But I'm game to keep trying.
Reducing the number of external windows-only executables from the
workflow is always a goal for me.
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