Hi to all, I've an h263 176x144 video file and an amr audio file. I'm searching a way to create the .3gp file with audio and video from the first two files. A software to do that (under windows)? Some suggestion?
> Hi to all, > I've an h263 176x144 video file and an amr > audio file. I'm searching a way to create the .3gp > file with audio and video from the first two files. > A software to do that (under windows)? > Some suggestion?
Thank a lot for the suggestion, unfortunely mp4creator seems not support the format of AMR file I'm using. First, the AMR file is saved from a stream and have no the starting header (0x21, 0x41, 0x4D, 0x52, 0x0A = "#!AMR ") In this condition mp4creator return an error message such as "no valid audio data" or similar. So I manually add the header, now the command: mp4creator.exe -create=sdisink105.amr -force3GPCompliance -verbose=5 prova.3gp
recognize the file like an audio file but read wrong it's content. I check the two option -I and -make-isma-10-compliant but they are unrelated with my problem.
AMR is recorded in 20ms frames. Each frame can be encoded using one of 8 varying levels of compression, (AMR modes 0-7) but I use only the same levels in all my file, the following one:
* Mode 7 - AMR 12.2 - Encodes at 12.2kbit/s
Each frame consists of a 1-byte header (value=07), then the rest of the frame is audio data. The frame size can be deduced from the frame header but in my case is fixed because all the frame are coded in mode 7. The frame size for mode 7 is 31 byte. I know AMR have some sub-type, sometime the frame size for mode 7 is 32 byte, other time the header "#!AMR " is not used and so on.
Sadly, I think that my file format, with or without the "#!AMR " header, is not supported by mp4creator. :-(
nomegenerico wrote: > Sadly, I think that my file format, with or without the "#!AMR " > header, is not supported by mp4creator. :-(
So you are the perfect candidate to file a complaint at the mpeg4ip.sf.net forum. AMR is believed to be supported, at least two flavours, you can compile it into ffmpeg, but maybe not yet in mp4creator. When h264 was new the same happened.
But you agree: mp4creator is the Swiss Army knife of such files?
> So you are the perfect candidate to file a complaint at the > mpeg4ip.sf.net forum. AMR is believed to be supported, at least two > flavours, you can compile it into ffmpeg, but maybe not yet in > mp4creator. When h264 was new the same happened.
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