[FFmpeg-devel] [PATCH] h264/aac in flv

Mike Melanson mike
Wed May 7 00:37:44 CEST 2008

Michael Niedermayer wrote:
>> Rofl:
>> "Sampling rate
>> For AAC: always 3"
>> Is this ok for you ?
> Ive not doubted that this has to be set to 3. The question is if
> 48khz/22khz AAC is allowed in flv or not. If one takes the spec literally
> then the awnser is clearly no. But your muxer would store them blindly
> with a claimed sample rate of 44khz.

Authoritative answer: For AAC inside of a FLV, the Flash Player doesn't
care what the FLV header claims the sample rate is; it parses the AAC
data structure to find the actual sample rate. Flash Player should be
able to play any sample rate that AAC supports (same goes for MP3 now,
as well).

	-Mike Melanson

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