[MEncoder-users] Merging H.264/AAC movies [HELP]

[Henk Schoneveld]

James Hastings-Trew wrote:
> Henk Schoneveld wrote:
>   
>> Sebi Onofrei wrote:
>>   
>>     
>>> Hello people,
>>>
>>> I tried but with no success yet to merge 2 H.264/AAC movies into one 
>>> output, using this command:
>>>
>>> "mencoder -of lavf -lavfopts 
>>> format=mp4:i_certify_that_my_video_stream_does_not_use_b_frames -oac 
>>> copy -ovc copy first.mov second.mov -o merged.mov"
>>>
>>> The mencoder output after running the above configuration looks like 
>>> this:
>>> -----------
>>> MEncoder 1.0rc1-4.1.2 (C) 2000-2006 MPlayer Team
>>> CPU: Intel(R) Xeon(R) CPU           X3210  @ 2.13GHz (Family: 6, 
>>> Model: 15, Stepping: 11)
>>> CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
>>> Compiled with runtime CPU detection.
>>> success: format: 0  data: 0x0 - 0xe3ed3
>>> Quicktime/MOV file format detected.
>>> VIDEO:  [avc1]  1024x768  24bpp  30.000 fps    0.0 kbps ( 0.0 kbyte/s)
>>> [V] filefmt:7  fourcc:0x31637661  size:1024x768  fps:30.00  ftime:=0.0333
>>> ** MUXER_LAVF 
>>> *****************************************************************
>>> You have certified that your video stream does not contain B frames.
>>> REMEMBER: MEncoder's libavformat muxing is presently broken and will 
>>> generate
>>> INCORRECT files in the presence of B frames. Moreover, due to bugs 
>>> MPlayer
>>> will play these INCORRECT files as if nothing were wrong!
>>> ******************************************************************************* 
>>>
>>> OK, exit
>>> videocodec: framecopy (1024x768 24bpp fourcc=31637661)
>>> Audio format 0x6134706d is incompatible with '-oac copy', please try 
>>> '-oac pcm' instead or use '-fafmttag' to override it.
>>>
>>> Exiting...
>>> -----------
>>>
>>> Then I tried to force a new tag with '-fafmttag 0xff', and there is a 
>>> floating point exception:
>>> ----------
>>> videocodec: framecopy (1024x768 24bpp fourcc=31637661)
>>> Forcing output audio format tag to 0xff.
>>> audiocodec: framecopy (format=ff chans=2 rate=48000 bits=16 B/s=192000 
>>> sample-0)
>>> VIDEO CODEC ID: 28
>>> AUDIO CODEC ID: 15003, TAG: 0
>>> Writing header...
>>> [mp4 @ 0x85a7c54]Warning, using MS style audio codec tag, the file may 
>>> be unplayable!
>>> [mp4 @ 0x85a7c54]track 1: sample duration is not set
>>> Floating point exception
>>> ----------
>>>
>>> Can anyone help or give me hints about how should I configure mencoder 
>>> to merge H.264/AAC movies?
>>> Or at least is it even possible to do so?
>>>
>>> Thank you.
>>>
>>> With kind regards,
>>> Sebi Onofrei
>>> _______________________________________________
>>> MEncoder-users mailing list
>>> MEncoder-users at mplayerhq.hu
>>> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>>>     
>>>       
>> Have a look at http://gpac.sourceforge.net/doc_mp4box.php
>> MP4Box -add file1.mov#video -cat file2.mov#video -add file1.mov#audio
>> -cat file2.mov#audio newfile.mp4 will probrably do what  you want
>>
>> If you get sync issues, you can resolve this with MP4Box -delay 1=200
>> newfile.mp4 if in this case audio would be 200ms behind video
>>
>> Henk Schoneveld
>>   
>>     
> One problem with MP4Box's delay parameter is that not all mp4 players 
> honor the delay tag, Quicktime included.
>
>   
Never noticed a problem with it, also couldn't google info saying such, 
maybe I'm not searching the right way.

Henk Schoneveld
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