[vlc-devel] Re: [vlc] Playing 3GPP Audio Only LATM AAC/HE-AAC Streams

Ross Finlayson finlayson at live555.com
Sun Feb 19 02:43:47 CET 2006

At 10:30 PM 2/16/2006, you wrote:
>Specifically, does the current version of VLC support playing 3GPP 
>Audio Only LATM AAC/HE-AAC streams?
>This stream does not seem to play in VLC, yet it plays perfectly in 
>mobile phones, QuickTime, and RealPlayer.

To follow up on Greg's question:

The (now anachronistically named) "livedotcom.cpp" recognizes 
"audio/MP4A-LATM" AAC/RTP streams, and tags such streams with the 
'mp4a' fourcc - just the same as "audio/MPEG4-GENERIC" (i.e., 
non-LATM) AAC/RTP streams.

In other words, the RTSP/RTP libraries and interface code recognizes 
and handles this type of stream, but it's possible that the decoding 
library ("faad"?) does not.

So, a question for the "faad" (audiocoding.com) people: Can your 
decoding library handle LATM-formatted AAC audio?  If so, does 
anything special need to be done to make this work?

	Ross Finlayson
	Live Networks, Inc. (LIVE555.COM)

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