[x264-devel] Re: Response from a vendor

[Måns Rullgård]

Peter Maersk-Moller <peter at maersk-moller.net> writes:

> Hi Andrea.
>
> Thats right. Currently I'm unable to change the DAR (or SAR for
> x264) on-the-fly as MPEG-2 does with a new STATE-SEQUENCE. With
> x264, I have to restart the stream and that is a serious limitation
> if you you are using x264 to deliver live TV as I do.

I suppose it would be possible to enhance x264 to allow certain
parameters to be changed at any time.  Changing SAR should be as
simple as setting a new value in an SPS.  In the case of streaming TV
I guess this would be done by sending a new SPS with the updated SAR.
An IDR frame probably makes sense at those places anyway.

-- 
Måns Rullgård
mru at inprovide.com

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