[MPlayer-users] Transcoding video with mencoder, audio becomes asynchronous

[Louis Tim Larsen]

At 23-09-2011 15:49, Ovidio Pirvu wrote:
> 2011/9/23 Ovidio Pirvu<obvi84 at gmail.com>
>
>>
>> 2011/9/23 Ron Johnson<ron.l.johnson at cox.net>
>>
>>> On 09/23/2011 04:01 AM, Louis Tim Larsen wrote:
>>>
>>>> At 23-09-2011 00:59, Ron Johnson wrote:
>>>>
>>>>> On 09/22/2011 01:03 PM, Louis Tim Larsen wrote:
>>>>>
>>>>>> Den 20-09-2011 20:19, Roger Pack skrev:
>>>>>>
>>>>>>> I try to transcode some video with this command (to change the start
>>>>>>>> time):
>>>>>>>> mencoder input.avi -o output.avi -ovc lavc -oac copy
>>>>>>>> -force-avi-aspect 16:9
>>>>>>>> -ss 0:02:00
>>>>>>>> But the audio of output.avi becomes asynchronous. It's like it's
>>>>>>>> going
>>>>>>>> faster and faster a little by little and the last part of the clip
>>>>>>>> has no
>>>>>>>> audio at all.
>>>>>>>>
>>>>>>> what about without lavc ?
>>>>>>>
>>>>>>>   With -ovc copy instead of -ovc lavc I still get the same error.
>>>>>>
>>>>> What if you use HandBrakeCLI or ffmpeg?
>>>>>
>>>>>   I only get the error when I use Mencoder with the -ss and/or the
>>>> -endpos
>>>> option.
>>>> Like this command: mencoder input.avi -o output.avi -ovc copy -oac copy
>>>> -force-avi-aspect 16:9 -ss 0:02:00
>>>> And it's only the the versions in Ubuntu 11.10 x86_64 and the current
>>>> Debian testing x86_64 (running on to different
>>>> machines.(1.0~rc4.dfsg1+**svn33713-1 and 1.0~rc4.dfsg1+svn33713-2)
>>>> But in Ubuntu 11.04 x86_64 with 1.0~rc4.dfsg1-1ubuntu3 I didn't got this
>>>> error.
>>>>
>>>>
>>> https://launchpad.net/~**motumedia/+archive/mplayer-**daily<https://launchpad.net/%7Emotumedia/+archive/mplayer-daily>
>>>
>>> This (ppa:motumedia/mplayer-daily) generates daily an up-to-date mplayer
>>> and mencoder installable by apt.  I strongly urge you to use it.
>>>
>>>   I've tried with different input source and got the same problem, so it's
>>>> not the source.
>>>> And I've no problems using HandBrake, except it's difficult to change
>>>> start/end time.
>>>>
>>> It's a bit obtuse...  :)
>>>
>>> HandBrakeCLI -blah -blah --start-at duration:120
>>>
>>> Anyway, it only outputs to m4v and mkv.
>>>
>>> --
>>> Supporting World Peace Through Nuclear Pacification
>>>
>>
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>>
>>
>> have you tried with -ovc pcm?
>>
>>
>>
> oops, sorry. I was meaning to say -oac pcm
>
Wow that worked with the version of mencoder included in Ubuntu 11.10 
(1.0~rc4.dfsg1+svn33713-1). But it's weird that -oac copy worked in 
1.0~rc4.dfsg1-1ubuntu3 in Ubuntu 11.04.
Thanks.

-- 
Regards Louis