[MEncoder-users] AC3 and Strange Video Playback

Nigel Arnold nkarnold at googlemail.com
Mon Dec 31 14:33:33 CET 2007


Anyone ?

Thx

"Nigel Arnold" <nkarnold at googlemail.com> wrote in message 
news:fkg55g$s32$1 at ger.gmane.org...
> OK, I've Changed the command line to
> mencoder dvd://1 -dvd-device R:\  -oac lavc  -ovc lavc -lavcopts 
> vcodec=mpeg4:vbitrate=1024:acodec=ac3:abitrate=384 -channels 6 -af 
> channels=6 -of lavf -lavfopts format=avi -aid 0x80  -ofps 
> 24000/1001 -Chapter 03-03  -o "AC3Test.avi"
>
> Exactly same problem, i can see in the mencoder output, it is now using 
> the lavf muxer, but the resulting file is the same in terms of playback 
> issues.
>
>
> "Giacomo Comes" <comes at naic.edu> wrote in message 
> news:20071220142946.GA5504 at monopoli.naic.edu...
>> On Thu, Dec 20, 2007 at 01:19:12PM -0000, Nigel Arnold wrote:
>>> Hello
>>>
>>> I'm getting a problem creating any MPEG4 AVI with any AC3 audio track.
>>>
>>> I've tried RC2 and also a 25088 build as provided by Sherypa
>>>
>>> I''ve stripped back to a very basic bare command line,
>>>
>>> mencoder dvd://1 -dvd-device R:\  -oac lavc  -ovc lavc -lavcopts
>>> vcodec=mpeg4:vbitrate=1024:acodec=ac3:abitrate=192  -ofps
>>> 24000/1001 -Chapter 03-03  -o "AC3 Test.avi"
>>>
>>> The resulting .avi file -
>>> 1. The video plays about 2-3 times faster than speed than normal (like a
>>> Fast forward) in VLC, and WMP
>>> 2. The video is not seekable, as soon as I position in VLC, the video 
>>> ends,
>>> in WMP If i seek, the video stops, audio still plays and takes about 10
>>> minutes for the video / audio to start playing again.
>>>
>>> This appears to be only related to AC3, as if I choose libmp3lame or
>>> libfaac, the video's are fine.
>>>
>>>
>>> I've tried the above command with a much earlier build 21190 and it 
>>> works
>>> fine. the resulting video file plays fine in VLC, WMP and MPlayer
>>>
>>> Any Ideas
>>>
>>> Thx in advance
>>
>> It a old bug.
>> See 
>> http://lists.mplayerhq.hu/pipermail/mencoder-users/2007-December/007644.html
>>
>> Giacomo 






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