Audio file format with time code

[Dr. Peter G. Baum]

Thanks, Nicolas, for the quick answer.

Has a channel to be bound to a position? I don't need a position.
But I need the time code to merge the audio later with the corresponding 
video.

Any audio file format supporting time code?

Peter



On 07/15/2014 10:30 PM, Nicolas Dufresne wrote:
> Le mardi 15 juillet 2014 à 21:49 +0200, Dr. Peter G. Baum a écrit :
>> Hi,
>>
>> Which file format implemented in gstreamer supports up to 40 channels
>> PCM samples with time code?
>
> I doubt any standard allow that, at least it would not be playable in
> Gstreamer. We have 28 channel positions defined so far, see
> GstAudioChannelPosition. It would not be possible to create a layout for
> that. Though, in term of raw PCM I think it could work. Timecode isn't
> mandatory for raw audio, as the sample length is fixes, we can
> figure-out when to play it. Note that our theoretical limit is 64 (with
> layout).
>
>>
>> wavenc supports only 2 channels (why only 2, the NumChannels field is 16
>> bit?) and does not support the broadcast wave chunk, which would add the
>> time code.
>
> There is a comment in the code,
> "gst-plugins-good/gst/waveenc/gstwaveenc.c"
>
> /* Max. of two channels, more channels need WAVFORMATEX with
>   * channel layout, which we do not support yet */
>
> Feel free to propose a patch. I suppose we could cheat and allow more
> channels without exposing a layout. It would just not play on any audio
> sink unless you do the merging yourself.
>
> cheers,
> Nicolas
>
>
>
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