[MEncoder-users] Multiplexing to mpeg2

[socke]

L Lee schrieb:
> On 9/19/09 2:09 PM, "Laine Lee" <llee040 at sbcglobal.net> wrote:
>
>   
>> I became so frustrated with some transcoding that was shortening the video
>> with respect to audio by about a half second for every 2 hours, that I
>> learned to use SOX to change the tempo of my audio very slightly so that I
>> could maintain sync.
>>
>> I was as sure as I can be that I had carefully noted my procedure which
>> included re-multiplexing with mencoder. But now when I try my mux command
>> line, the process appears to be completed, although with many progress
>> messages, some of which are probably errors. But the output file is empty.
>> Please tell me what else should be added or substituted in this command. The
>> original input file consists of muxed 24 fps mpeg2 video.
>>
>> mencoder original.mpg  -ovc copy -oac  copy -audiofile faster_audio.ac3
>> -ofps 24000/1001 -of mpeg -mpegopts format=dvd:tsaf:muxrate=40000 -o
>> new_multiplexed.mpg
>>
>>     
>
> I'm updating this thread because now I'm trying to confirm whether this
> method no longer works for current mencoder svn.
>
> Here's the simplest public reference I can find for the method, which
> appears to have been updated in 2008.
>
> http://renomath.org/ejolson/video/hi8/
>
> The command example included there is
>
> mencoder video.m2v -audiofile video.m2a \
>     -oac copy -ovc copy -of mpeg \
>     -mpegopts format=dvd:tsaf:vaspect=4/3 -o video.mpg
>
> I think I've adequately created the required source files, although I've
> used 16/9 and adjusted the vaspect value, but I can't get any output other
> than an empty file when I run it. The files I'm using fit the specs unless
> more strict adherence to values for bit rate, frame rate, etc are required.
> I'll upload short sample audo and video-only sources if anyone wants to
> test. Thanks.
>
> Laine Lee 
>
>
>   
If you are just multiplexing, you can use mplex.