[MEncoder-users] Problems with mencoder on Win32 and MKV

[Berend Dekens]

Joey Parrish schreef:
> On 4/23/07, Berend Dekens <cyberwizzard at sportlaan.adsl.utwente.nl> wrote:
>   
>> I'm using Transcode360 for my Xbox360 to view video on my TV. Some stuff
>> is encoded in Matroska (most of which is x264) and I can't get this
>> content to work. It either runs heavely out of sync (seconds out of sync
>> after seconds of video) and it looks like the video is playing too fast.
>> With some files it runs fine for a while and then cuts out with messages
>> about having too many packets in the audio buffer.
>>
>> An example of how the mencoder is executed under windows MCE:
>> mencoder.exe -quiet -delay 0 -oac lavc -srate 48000 -af
>> lavcresample=48000 -of mpeg -mpegopts format=dvd -o "C:\Program
>> Files\Transcode360\Buffer\Pumpkin Scissors - 03 (1024x576 h264).360"
>> -ovc lavc -vf scale=720:404,expand=784:432,harddup -lavcopts
>> vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=8000:keyint=15:aspect=16/9:acodec=mp2:abitrate=320
>> -ofps 24000/1001 -slang eng -subpos 92 -alang jp -alang jpn "Pumpkin
>> Scissors - 03 (1024x576 h264).mkv"
>>
>> I tried playing with the options and I can't get it to work. I replaced
>> the stock mencoder.exe with numerous newer builds, some of which seemed
>> to improve the situation a little, other only made it worse.
>> What is going wrong? The strange thing is that everyone seems to use MKV
>> without problems... So why do I run into a brick wall time after time
>> (this has been broken for over a year now).
>>     
>
> Try another audio codec (not -oac lavc).  There are bugs there that
> have yet to be tracked down and fixed.  For me, anything I produce
> with -oac lavc is broken in that exact way.  Alternately, you can play
> the broken file back correctly with mplayer -nobps or mplayer -demuxer
> lavf, I think.
>
> --Joey
> _____________
The main problem is that the Xbox supports MPEG(2) and WMV and thats it 
(3 cores and it still won't play anything else.... but thats a different 
issue) so I'm stuck with MPEG2 sound. I could try PCM and see if that 
solved the encoding issues and see if that works...

I can't find any manual anywhere tbh, lavc seems to be a certain 
processing library if I'm not mistaken for video and audio. So why does 
it have issues with MKV files? Because everything in a AVI container 
works fine.

Berend