[FFmpeg-devel] Codec IDs for AC3/DTS variants (Was: Re: [RFC] additinaldesc_type for dtshd mpeg-ts demuxer)

[Benjamin Larsson]

Andreas ?man wrote:
> Benjamin Larsson wrote:
>   
>> elupus wrote:
>>     
>>>>> Yes, we need to/should add support for spdif  output/pass through.
>>>>>       
>>>>>           
>>>> That would be entirely up to the calling application to handle.  All I'm
>>>> asking that such all application be given enough information to make the
>>>> right choice.
>>>>
>>>>     
>>>>         
>>> It's actually more the job of an encoder / bitstream filter. You need to add a 
>>> S/PDIF header to the data, and padd to a certain length. Demuxer should never 
>>> output S/PDIF'ed data, but sure a AC3_SPDIF, DTS_SPDIF, AAC_SPDIF, WMA_SPDIF 
>>> codec id's could be nice to have.
>>>   
>>>       
>> Don't forget mpeg audio over spdif. Btw we have figured out how to send 
>> wmapro over spdif if you are interested.
>>
>>     
>
> Btw, does anyone know how to send AAC over SPDIF? I think i've seen
> AV receivers that claim to support it at least.
>
> Perhaps we should add a output muxer format "IEC958" that generates
> SPDIF output, I've been thinking about that previously..
>   

I'm not sure that will work. Wmapro needs/can use parameters from the 
asf container and the packets need to be split into frames. So in that 
case it would be better if the decoder could get a spdif generation 
function.

MvH
Benjamin Larsson