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View Full Version : 3gp muxing

odyssey
18th October 2006, 16:05
As I can see, H.264 is compatible with the 3gp container, with AAC-LC audio. I wanted to use x264 to get great quality and low bitrate and Nero Digital for the audio compression - But how come there seem to be no muxer for this container? It seems that a lot of software are able to encode on themselves, but I haven't come across software that would just mux. I think I saw a statement that mp4box could generate 3gp files, but I couldn't find anything in the usage help.

P.S. When is the search engine updated to handle 3-chars searches????
Hyper Shinchan
18th October 2006, 17:07
1. This post would be moved to the containers section.
2. AVC in 3GP is allowed by 3GPP release 6 specifications. At the moment I don't know about mobile phone that complaint to this specification, so it's pretty useless to generate a similar file. Eventually 3GPP release 6 allows also AAC Plus V2 in 3GPP (In fact one the reference software was relased by 3GPP) .
QuickTime creates 3GPP complaints with Release 6 (AAC LC only).
With MP4Box you can create a similar file:
mp4box -fps 15 -add myvideo.264 -add myaudio.aac -sbr my3gp6.3gp
Of course you must change the fps value and you have to set the -sbr flag only if you are using AAC Plus (sbr means backward compatible flag, -sbrx non-backward compatible).
That's all (I think that the right brand ,3gp6,is automatically setted from a lot of time, I think that this feature was also requested by me on the GPAC thread).
Drachir
18th October 2006, 18:42
2. AVC in 3GP is allowed by 3GPP release 6 specifications. At the moment I don't know about mobile phone that complaint to this specification, so it's pretty useless to generate a similar file.

Some cell phones out there, should support H.264. There was a similar discussion recently: http://forum.doom9.org/showthread.php?t=116654
bond
18th October 2006, 18:44
moved
Hyper Shinchan
23rd October 2006, 17:11
Some cell phones out there, should support H.264. There was a similar discussion recently: http://forum.doom9.org/showthread.php?t=116654
Thank you, I was out-dated. It means that finally they are starting to implement release 6.