[MPlayer-users] AAC (using FAAD2) problem

[Steven M. Schultz]

> From: Arpi <arpi at thot.banki.hu>
> i've just checked that file...
> 
> mplayer -dumpaudio doesn't coredumps, it's joke, look at the smiley...

	I figured that was the case when I did not see a mplayer.core file ;)

> but playing the dumped out AAC track i get:

	Did you try using 'faad video.mp4'?   The faad program is able to
	demux the AAC audio:

		faad -w video.mp4 | vplay

	sounds good.

awds59.259-> faad video.mp4
FAAD (Freeware AAC Decoder) Compiled on: Apr 25 2002
Copyright:   M. Bakker
	http://www.audiocoding.com

Decoding video.mp4 took:  5.23 sec.

	works fine and the wav file plays.

> root at arpi:/3a/MPlayer/incoming/!under_checking# faad stream.dump
> FAAD (Freeware AAC Decoder) Compiled on: Mar 26 2002
> Copyright:   M. Bakker
>              http://www.audiocoding.com
> 
> Ate 0 Bytes on init!
> Error: Gain control not yet implemented
> 
> the same works for othet .mp3 files i have.

	Hmmm, I not using .mp3 am I? 

	The AAC audio was created with faac:

		faac -r -m4 -pLC -b96 video.pcm video.aac

	Multiplexing was done with mpeg4ip's 'mp4creator' program.

> so either your file is broken or uses an unsupported AAC feature?

	Possible.

	Is is a possiblity that faad (from faad2) is newer on my system?

	The reason I thought it _might_ be a problem in MPlayer was that:

		mplayer -nosound video.mp4

	works fine _and_ 'faad' is able to demux it and produce sound. 


	MPlayer is built with libfaad2 (which faad uses, right?).    The 
	thought was that perhaps there was a demuxing problem of some kind
	since the FAAD part of MPlayer gives a stream of:

		FAAD: Trying to resync!
		FAAD: Trying to resync!
		FAAD: Trying to resync!
		FAAD: Trying to resync!
		FAAD: Trying to resync!

	but faad does not.

	A bit of a puzzle isn't it?

	Thanks.

	Steven Schultz
	sms at 2bsd.com