[x264-devel] regular intra period

[Purvin Pandit]

Thanks for the quick reply. A quick follow up question. With x264 is it possible to encode using fixed GOP size? NO adapation.

 

I want to encode a sequence with say GOP = 4 (I b B b P), is that possible?

 

Thanks,

-Purvin
 
> Date: Mon, 9 Mar 2009 11:59:34 -0800
> From: darkshikari at gmail.com
> To: x264-devel at videolan.org
> Subject: Re: [x264-devel] regular intra period
> 
> 2009/3/9 Purvin Pandit <purvinp at hotmail.com>:
> > Hi
> >
> > I would like to encode a sequence with regular intra period (say every 25
> > frames). I tried using the -i option but that did not seem to work. I used
> > -I option but I think this is generating IDR pictures. Can someone tell me
> > if its possible to generate an AVC bitstream with regualr I period?
> >
> > Currently I am using the following command line:
> >
> > x264.exe --scenecut 0 -b 3 --no-b-adapt --b-pyramid -r 1 -i 25 --bitrate
> > 30000 -p 1 --merange 64 -t 2 -v -o test_p1.264 input.yuv 1920x1080
> >
> > I wasnt sure how to disable scene cut so I use --scenecut 0. Is this
> > conflicting with -i 25?
> 
> x264 will only generate non-IDR I-frames in the case that it detects a
> scenecut but it has been less than --min-keyint since the previous
> keyframe. All non-scenecut I-frames are IDR.
> 
> Dark Shikari
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