[FFmpeg-devel] [PATCH] avdevice/decklink_dec: Added SCTE104 message decode from VANC

[Devin Heitmueller]

> On Oct 15, 2017, at 6:36 PM, Moritz Barsnick <barsnick at gmx.net> wrote:
> 
> On Fri, Oct 13, 2017 at 09:10:30 -0400, Devin Heitmueller wrote:
>> Video filters cannot create new streams
> 
> No? I thought they could.
> 

I couldn’t find a single filter which calls avformat_new_stream(), and the docs for avformat_new_stream() indicate that it can only be called by input format handlers during read_header(), or it can also be called during read_packet() if AVFMTCTX_NOHEADER is set by the demux.

Don’t confuse what I’m asking about with the ability to have a filter which has one input and multiple outputs.  These are targeted at raw audio and video frames, as opposed to streams.

I would be quite happen to be proven wrong, of course.  Just point me to an example and I’m happy to copy/reuse whatever approach others have taken.

Devin