Mpeg-4 format converter

Inn3rchild · Post by **Inn3rchild** » Wed Nov 17, 2004 10:36 am

Well, uploaded vids of my fone, and, the only way i can play it is in quicktime, i tried 11 converters, 9 didn't work and 2 left a watermark in the middle.

Does anybody know any free good converters that support mpeg-4?

post-it · Post by **post-it** » Wed Nov 17, 2004 6:26 pm

http://www.free-codecs.com/download/REA ... _Codec.htm
check Doom9.org/downloads
check vcdHelp.com/tools
and if worse came to worse, you could have read the Guides

Qyot27 · Post by **Qyot27** » Wed Nov 17, 2004 6:45 pm

This might take a bit to do it right.

Use mp4UI to extract the audio and video from the file seperately (after you open the .mp4 in it you just select the video or audio track and hit 'Export'). Remember to select 'AVI' from the dropdown menu in the Export dialog box. If you have DivX (or any other MPEG-4 based codec) on your system that supports generic, or in some cases, specific, MPEG-4 streams, you can play it back.

Use dBPowerAmp Music Converter to decode the AAC file to WAV (make sure you have dBPowerAmp installed, and that you also have the AAC plugin for it).

Use VirtualDub or VirtualDubMod to put the video and audio back together. You'll probably want to compress the audio with MP3 to save on space.

Links to the programs you'll need:
http://mp4ui.sourceforge.net/ - mp4UI
http://www.dbpoweramp.com/dmc.htm - dBPowerAmp Music Converter
http://www.dbpoweramp.com/codec-central-mp4.htm - The MP4/AAC plugin for dBPowerAmp
http://sourceforge.net/project/showfile ... p_id=65889 - VirtualDubMod (get 1.5.4.1)

and just in case you need the right codecs after you've exported the video from mp4UI:

www.divx.com
www.koepi.org - for the newest XviD build

post-it · Post by **post-it** » Wed Nov 17, 2004 8:22 pm

Qyot27 wrote:... Use dBPowerAmp Music Converter to decode the AAC file to WAV (make sure you have dBPowerAmp installed, and that you also have the AAC plugin for it) ...

and why would an MP4 container NOT be accessable to VirtualDub
dirrectly - concidering that "its only a container" ???

Kalium · Post by **Kalium** » Wed Nov 17, 2004 9:02 pm

post-it wrote:
Qyot27 wrote:... Use dBPowerAmp Music Converter to decode the AAC file to WAV (make sure you have dBPowerAmp installed, and that you also have the AAC plugin for it) ...
and why would an MP4 container NOT be accessable to VirtualDub
dirrectly - concidering that "its only a container" ???

Maybe VDub doesn't handle the MP4 container?

Qyot27 · Post by **Qyot27** » Fri Nov 19, 2004 5:03 pm

Kalium wrote:
post-it wrote:
Qyot27 wrote:... Use dBPowerAmp Music Converter to decode the AAC file to WAV (make sure you have dBPowerAmp installed, and that you also have the AAC plugin for it) ...
and why would an MP4 container NOT be accessable to VirtualDub
dirrectly - concidering that "its only a container" ???

Maybe VDub doesn't handle the MP4 container?

VDub (and VDubMod) can't parse the MP4 container, and it doesn't handle AAC audio correctly either. The only workaround would be getting the mp4 to open via AVISynth using DirectShowSource, but the couple of times I tried to do that it didn't work.

Using MKVTools to make a Matroska file out of the video and audio would eliminate having to decode the AAC and wouldn't involve any nasty codec conversions, but a lot of the time people don't like to bother messing around with file types other than AVI, MPEG-1/2, or WMV, and I've rarely gotten AVIMux to work right in order to use AAC with AVI.

post-it · Post by **post-it** » Fri Nov 19, 2004 7:55 pm

... ok ... soo, the MP4 Audio does not have a proper AAC Codec - right?

hmmm . . . then what would the MKVtoolnix v1.0 and its runtime things do?

rose4emily · Post by **rose4emily** » Fri Nov 19, 2004 9:12 pm

Have you tried using Quicktime to dump the audio and video streams individually, so other apps that can't deal with the MP4 container re-mux the individual streams into whatever other format you want the file to be in?

post-it · Post by **post-it** » Fri Nov 19, 2004 10:07 pm

^_^ . . now it makes sense ^_^

THx