On Thu, Sep 11, 2008 at 5:02 AM, techie tone <
[hidden email]> wrote:
> Hi All,
>
> Can we derive the information about number of channels from codec_data?
>
> I want to extract the number of channels information from codec_data (for
> AAC-LC decoder) received from ffdemux_mov_mp4_m4a_3gp_3g2_mj2.
Do not use that demuxer. Use qtdemux instead, it works much much better.
The codec_data for AAC does include information about the number of
channels, but it's an AAC-specific thing, you'd need to parse it
yourself to find out.
The channel count is probably also in the caps anyway (from the
demuxer, if you use a decent demuxer), so you don't need to do that.
Mike
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