[MPlayer-dev-eng] Copy audio broken in MEncoder

[Grozdan]

On Mon, Apr 14, 2014 at 11:32 PM, Reimar Döffinger
<Reimar.Doeffinger at gmx.de> wrote:
> On Mon, Apr 14, 2014 at 10:55:20PM +0200, Grozdan wrote:
>> On Mon, Apr 14, 2014 at 10:50 PM, Reimar Döffinger
>> <Reimar.Doeffinger at gmx.de> wrote:
>> > On Sun, Apr 13, 2014 at 10:34:36PM +0200, Grozdan wrote:
>> >> On Sun, Apr 13, 2014 at 10:29 PM, compn <tempn at twmi.rr.com> wrote:
>> >> > On Sun, 13 Apr 2014 15:16:11 +0200
>> >> > Grozdan <neutrino8 at gmail.com> wrote:
>> >> >
>> >> >> Copying audio with -oac copy is broken in MEncoder. It duplicates
>> >> >> frames like crazy and the result is a desync between the video and
>> >> >> audio. Can this be fixed, please?
>> >> >
>> >> > it would be helpful if you gave us an example of what codec and
>> >> > container are failing. what command line you used etc.
>> >>
>> >> Just the basics. Any input will do
>> >>
>> >> mencoder <infile> -ovc xvid -xvidencopts bitrate=3000 -oac copy -o output.avi
>> >>
>> >> tested with different codecs in the input (ac3, mp3, dts) and behavior
>> >> is the same. Encoding with a different video codec such as x264 does
>> >> not make a difference.
>> >>
>> >> In fact, this problem has been around for almost a year
>> >
>> > Not reproducible for me with any of the input files I have and
>> > either of -ovc lavc or -ovc copy.
>>
>> I'm a bit confused. You are copying the video while I was talking
>> about copying the audio with -oac copy.
>
> Of course I used -oac copy. But I don't have xvid here, so I replaced
> that one with something else, that's why I only mentioned -ovc.

hmm, how come I get such duplicates all the time?

input is H.264 video + AC-3 audio, command line is:

mencoder input.mkv -ovc x264 -x264encopts bitrate=2000 -oac copy -o test.avi

when I do this, it duplicates like crazy. It's not just this
particular input file but on all others I tested

anyways, i'm happy with -mc 0 too :)


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