[MEncoder-users] A/V out of sync - but only on an Archos player

[Nico Sabbi]

Lennart Börjeson wrote:

>I've got an Archos Gmini 400 which I'm quite happy with. I've also usually 
>quite happy with mencoder/mplayer, but whatever options I try I can't get 
>proper A/V-sync when encoding with mencoder. Audio leads about 0.5 sec for 
>the entire movie.
>
>Now, mplayer plays the same file fine, so this is probably an Archos 
>deficiency. On the other hand, a file encoded with transcode with as 
>equivalent options as I can make them, plays fine both on the Archos and with 
>mplayer.
>
>I'm guessing there must be subtle difference in the headers, but I'm not 
>sufficiently knowledgeable of .avi-files or encoders to track it down myself. 
>Can you direct me to the proper tools and procedures?
>
>Best regards,
>
>/Lennart
>
>PS:
>
>Sample options used for mencoder, version 1.0pre5:
>-oac lavc -ovc lavc -lavcopts acodec=mp3:vcodec=mpeg4:abitrate=128
>
>Sample options used for transcode, version 0.6.14:
>-y ffmpeg -F mpeg4  -b 128
>
>  
>

0.5 is the default -audio-preload used when muxing to avi. You can 
override it
with -audio-preload 0, but it shouldn't make such a difference, unless 
Archos' demuxer
is broken