[MEncoder-users] using Mencoder to encode PSP .MP4 - Can't seem to fathom it out

[Dominik 'Rathann' Mierzejewski]

On Friday, 06 January 2006 at 01:11, Nige wrote:
> Hi all,
> 
> having major difficulties creating a valid PSP (.MP4) file.
> 
> As i understand it PSP .MP4 files are MPEG-4 video and AAC audio.
> so I compiled Mencoder with libfaac and tried the following, along with alot 
> of other combinations.
> 
> mencoder-faac.exe dvd://1 -dvd-device "E:\VIDEO_TS" -oac faac -faacopts 
> br=64:mpeg=4 -vf scale=320:240 -ovc xvid -xvidencopts bitrate=480 -aid 
> 128 -ofps 24000/1001 -Chapter 2-2 -forcedsubsonly -srate 24000 -noautosub -o 
> M4V80113.mp4
> 
> QuickTime says its not a valid movie file, the PSP just shows it as 
> corrupted data
> 
> have no problems with ffmpeg
> - ffmpeg -y -i <someinput.file> -title "blabla" -bitexact -vcodec xvid -s 
> 320x240 -r 29.97 -b 480 -acodec aac -ac 2 -ar 24000 -ab 64 -f psp -muxvb 768 
> M4V80113.mp4
> 
> Any help appreciated

MEncoder's default output container is AVI, so even if you name the output
file .mp4, it won't be MP4, but AVI. You may try using -of lavf, but it's
not guaranteed to work. You may also need to replicate some of the options
you used with ffmpeg in mencoder command (like bitexact).

Regards,
R.

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