[MEncoder-users] how to convert mkv to avi?

rulet1 at meta.ua rulet1 at meta.ua
Wed Jul 1 22:01:22 CEST 2009


> rulet1 at meta.ua wrote:
>>> rulet1 at meta.ua writes:
>>>
>>
>> Well... I have used command mencoder -ovc copy -oac pcm -o
>> your_output.avi
>> your_mkv_file.mkv
>> and got not readable file at all -- I even can't to know the size of the
>> output file...
>> I cannot use mencoder -ovc copy -oac copy -o your_output.avi
>> your_mkv_file.mkv command because it is says:
>>
>> r at NGF:/media/disk-1/ФИЛЬМЫ$ er -ovc copy -oac copy -o 1.avi Дурное
>> воспи_воспита
>> ние.mkv
>> MEncoder 2:1.0~rc2-0ubuntu19 (C) 2000-2007 MPlayer Team
>> CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (Family: 15, Model: 4, Stepping:
>> 9)
>> CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
>> Compiled with runtime CPU detection.
>> success: format: 0 data: 0x0 - 0x56eec1a6
>> [mkv] Track ID 1: video (V_MPEG4/ISO/AVC), -vid 0
>> [mkv] Track ID 2: audio (A_AAC), -aid 0, -alang und
>> [mkv] Will play video track 1.
>> Matroska file format detected.
>> VIDEO: [avc1] 720x304 24bpp 25.000 fps 0.0 kbps ( 0.0 kbyte/s)
>> [V] filefmt:31 fourcc:0x31637661 size:720x304 fps:25.00 ftime:=0.0400
>> videocodec: framecopy (720x304 24bpp fourcc=31637661)
>> Audio format 0x4134504d is incompatible with '-oac copy', please try
>> '-oac
>> pcm' instead or use '-fafmttag' to override it.
>>
> Chances are then that the audio is in a format that isn't compatible
> with the .avi container (DTS, AC3, etc). I've seen a lot of "scene"
> releases that re-encode the video but drop the audio in "as is" from the
> source. So, you might have to re-encode the audio, as in:
>
> mencoder -ovc copy -oac mp3lame -lameopts br=192:cbr:mode=0 -o
> your_movie.avi your_mkv_file.mkv
>
> This is much less objectionable than re-encoding the video. However,
> with caution, I might mention that this will probably introduce a/v
> desync unless the input file is pristine. In general I've found mkv
> files have an audio delay of around 1 to 3 frames so you might need to
> fiddle with a -delay parameter (a good starting point is -delay 84). You
> also might need to include -noodml in the command-line depending on if
> your player supports ODML avi files or not. Some don't. Some need them
> if the file size exceeds 1Gb. Your mileage may vary.
>
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 So where to put this -delay parameter in the comman which you have wrote?

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