[MPlayer-users] Converting video to Nintendo 3DS

[Lucas Badiale]

> I suspect ffmpeg -i file would have told you the fourccs are different
> which is not surprising since you did pass -ffourcc to mencoder,
> but your ffmpeg command line is missing -vtag MJPG.

using the -i flag on ffmpeg I found that the ffmpeg convertion uses
the yuvj420p colospace, and mencoder uses yuv420p.
this seems to be the only diference, but I couldn't find a way to
force mencoder to use yuvj420p to convert =/

someone do it on mencoder?


On Wed, Feb 29, 2012 at 4:47 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Lucas Badiale <lcbadial <at> gmail.com> writes:
>
>> ffmpeg -i revenge.mp4 -s 400x240 -aspect 2:1 -r 20 -vcodec mjpeg
>> -qscale 1 -acodec adpcm_ima_wav -ac 2 VID_0001.AVI -t 10
>
>> mencoder revenge.mp4 -o VID_0002.AVI -vf
>> scale=400:-11,expand=400:240:0:0 -ofps 20 -ovc lavc -oac lavc
>> -lavcopts acodec=adpcm_ima_wav:vcodec=mjpeg:aspect=2 -ffourcc MJPG
>> -endpos 10
>
>> I used the "identify" flag on mplayer on both outputs, to see the
>> diference... but I couldn't find anything suspicious =/
>
> I suspect ffmpeg -i file would have told you the fourccs are different
> which is not surprising since you did pass -ffourcc to mencoder,
> but your ffmpeg command line is missing -vtag MJPG.
>
> Carl Eugen
>
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