Convert .3gp to mp4 Using ffmpeg

[nujinini]

Hi!

Tried to search in our forums for .3gp conversion to mp4 but did not get anything particular to my question.

I am trying to convert some videos taken from my sons graduation yesterday. I tried to play the video and was surprised to find it in .3gp and there was no sound in the playback when played in my laptop.

Here are my output.

jun@jun-laptop:~$ ffmpeg -i '/home/jun/Desktop/VID_20110319_140701.3gp' -s vga '/home/jun/Desktop/VID_20110319_140701.mp4' 
FFmpeg version 0.5-svn17737+3:0.svn20090303-1ubuntu6.2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --extra-version=svn17737+3:0.svn20090303-1ubuntu6.2 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --disable-stripping --disable-vhook --enable-libdc1394 --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-armvfp --disable-neon --disable-altivec --disable-vis --enable-shared --disable-static
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 0 / 52.20. 0
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Apr 23 2010 15:08:34, gcc: 4.3.3
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/jun/Desktop/VID_20110319_140701.3gp':
  Duration: 00:00:48.28, start: 0.000000, bitrate: 1000 kb/s
    Stream #0.0(eng): Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 60 tbr, 1k tbn, 60 tbc
    Stream #0.1(eng): Audio: samr / 0x726D6173, 8000 Hz, mono, s16
Output #0, mp4, to '/home/jun/Desktop/VID_20110319_140701.mp4':
    Stream #0.0(eng): Video: 0x0000, yuv420p, 640x480 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 60 tbc
    Stream #0.1(eng): Audio: 0x0000, 8000 Hz, mono, s16, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
Unsupported codec for output stream #0.0
jun@jun-laptop:~$

Can somebody kindly help me understand what I've been missing please?

Thanks!

[Dapper Dan]

There might be something here that will help you get it sorted.

[Rubberman]

Why not convert it to mpeg2 (-target ntsc-dvd)? Anything can play that. In any case, I haven't had any problems converting to/from mpeg4, but the error indicates that your ffmpeg version has not been compiled with the mpeg4 encoder. Since the source is actually in mpeg4, it obviously has a decoder (different beast).

So, how did you install your ffmpeg? From a package repository (binary), or from source? I usually build from source so I can configure it to suit my needs. I've had problems with the pre-compiled versions in the past, similar to yours.

[nujinini]

So, how did you install your ffmpeg? From a package repository (binary), or from source? I usually build from source so I can configure it to suit my needs. I've had problems with the pre-compiled versions in the past, similar to yours.

I installed it by:

$ sudo aptitude install ffmpeg

I'm sorry but I don't know how to answer if I got it from binary or from source. Can you please tell me where I should start if I try to build it from source too? Perhaps I can configure it to suit my needs, if ever.

[Rubberman]

Installing with Aptitude, you got the pre-compiled binaries. You can also download the sources and build them on your system, but you will need the development versions of a number of packages (mostly for the header files). You can get the ffmpeg source from here: Get FFmpeg