Changing Frame Rate

[Tim Müller]

On Fri, 2016-06-24 at 10:04 +0200, Peter Maersk-Moller wrote:

Hi Peter,

> Assuming you are using mp4mux with h264parse prepended and assuming
> the stream could be ... lets say a RTP stream received using udpsrc,
> then you can send first a stream with frame rate A (and resolution X)
> and then frame rate B (and resolution Y). In theory h264parse should
> detect the frame rate change and in theory, it should signal that to
> mp4mux and in theory mp4mux should accept this and create a new entry
> describing the new condition, as it can with resolution change in the
> middle of a stream. If the code is there in mp4mux and h264parse,
> that ought to work.
> 
> Likewise the demuxer should be able to detect frame rate change and
> resolution change and a player should be able to handle change of
> both resolution and frame rate during play. However implementations
> may not always be full.

MPEG-TS would likely be a better container for tha use case than
(traditional) MP4.

Cheers
 -Tim

-- 

Tim Müller, Centricular Ltd - http://www.centricular.com