[x264-devel] Encoding frames with libavcodec

[Dolevo Jay]

Perfect!
My last question (for this week :) )

I am capturing images from the screen, encoding them frame by frame 
using H264 (x264), sending them to the client and there decode them 
frame by frame and show on the screen. 

In my project, latency is important but not a problem up to let say 300 
ms. For this purpose, I set my encoder parameter by using:

x264_param_default_preset(&param, "ultrafast", "zerolatency");
and also,
x264_param_apply_profile(&param, "baseline"); 

Is this all that I can do? I mean these commands will do the best for zerolatency ultrafast encoding for me? What else can I do?



Thanks.
		

> From: jason at x264.com
> Date: Fri, 7 Dec 2012 06:06:57 -0800
> To: cmst at live.com
> CC: x264-devel at videolan.org
> Subject: Re: [x264-devel] Encoding frames with libavcodec
> 
> On Fri, Dec 7, 2012 at 1:56 AM, Dolevo Jay <cmst at live.com> wrote:
> > Hi Jason,
> >
> > Is there any way of exporting some statistics from the encoder? For example,
> > I want to get the SSIM result of every frame. I know there is a way of doing
> > it (b_ssim=1;) but I want to have it in my variable. Thanks.
> >
> > Jay
> >
> >> From: jason at x264.com
> >> Date: Tue, 4 Dec 2012 08:05:51 -0800
> >
> >> Subject: Re: [x264-devel] Encoding frames with libavcodec
> >> To: cmst at live.com
> >>
> >> On Tue, Dec 4, 2012 at 12:29 AM, Dolevo Jay <cmst at live.com> wrote:
> >> > Hi Jason,
> >> >
> >> > I have read a lot after your last email and now I have a running code.
> >> > However, I have a small problem in the decoder side and I need again
> >> > your
> >> > help. When I call avcodec_decode_video2, I got the following error:
> >> > [h264 @ 00344fe0] no frame
> >>
> >> x264 outputs video in annex-B format by default -- you probably have
> >> to demux (using libavformat) before sending it to
> >> avcodec_decode_video2. Either way, this is an ffmpeg question, not an
> >> x264 question; you might have better luck on the correct mailing list.
> >>
> >> Jason
> 
> Grep f_ssim in x264.h.
> 
> Jason
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