[FFmpeg-devel] [PATCH] allow high audio sample rates in mov/mp4 muxer

Baptiste Coudurier baptiste.coudurier
Thu Jun 10 22:44:00 CEST 2010

On 06/10/2010 01:27 PM, Justin Ruggles wrote:
> Alex Converse wrote:
>> On Thu, Jun 10, 2010 at 1:54 PM, Justin Ruggles
>> <justin.ruggles at gmail.com>  wrote:
>>> Hi,
>>> This patch allows the use of sample rates>  65535 in mov/mp4 (e.g. 96kHz
>>> and 192kHz).  I don't know where to find this info in the MP4 spec, but
>>> this is how the MPEG-4 ALS Reference Software does it.
>> It might also be a good idea to look at the AAC 88.2/96 kHz test vectors.
> Well, it seems that it shouldn't be 0, but should be the actual sample
> rate using more than 16 bits.  I guess the reserved value that follows
> is no longer reserved.  I'll send a new patch soon.

Humm, I don't feel confident about this.
Can we ask ISO about this ?

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