[Freeswitch-users] H264 Encoding Error

Thu Mar 3 17:40:28 MSK 2016

yes, the encoder err is caused by libx264 API change, old x264 version works but I’m not sure the exact version that breaks it.  

we are working on find out what changed and trying to fix that. hints and patches are welcome.

If there’s not yet an open jira on this subject, please make one and assign to me.

and we also working on get ffmpeg 2.6/2.8/3.0 working, there’s a jira assigned to me but I cannot access jira so cannot put the link here atm.

let me know if anyone has any patch I’d like to review.

On Thursday, March 3, 2016 at 10:28 AM, 郭秋平 wrote:

>  This issue is because the client does not send keyframe to FS
>  
>  
>  
>  
> > 在 2016年3月2日，下午10:06，郭秋平 <guoqiuping81112 at 163.com (mailto:guoqiuping81112 at 163.com)> 写道：
> > I found the issue is because of the incorrect version of x264.
> >  
> > I use x264-snapshot-20150625-0011-stable , then the issue disappears.
> > but now libav report another log:
> > non-existing PPS 0 referenced
> > decode_slice_header error
> > non-existing PPS 0 referenced
> > decode_slice_header error
> > non-existing PPS 0 referenced
> > decode_slice_header error
> > no frame!
> >  
> >  
> > How can I know the exact version of x264 and libav for FreeSWITH 1.6.4
> >  
> >  
> > > 在 2016年3月2日，上午12:23，郭秋平 <guoqiuping81112 at 163.com (mailto:guoqiuping81112 at 163.com)> 写道：
> > > sorry, my mistake.   my operation system is CentOS 7.1.1503
> > > > 在 2016年3月2日，上午12:13，Brian West <brian at freeswitch.org (mailto:brian at freeswitch.org)> 写道：
> > > > You've lost me at "My box is CentOS6.5"
> > > >  
> > > > On Tue, Mar 1, 2016 at 3:11 AM, 郭秋平 <guoqiuping81112 at 163.com (mailto:guoqiuping81112 at 163.com)> wrote:
> > > > > Hi All:
> > > > >  
> > > > > My box is CentOS6.5, and FS is 1.6.4
> > > > >  
> > > > > When I use H264 as the video codec.
> > > > > FS report encoding fail as below.
> > > > >      [ERR] avcodec.c:1117 Encoding Error -1
> > > > > and x264 report
> > > > >      lookahead thread is already stopped
> > > > >  
> > > > > I checked the source code, I found that
> > > > > when switch_h264_encode encode is invoked first time, it results that context->got_encoded_output is set to 1.
> > > > > and after that, if switch_h264_encode is invoked again, it will check context->got_encoded_output , and then pass null frame to avcodec_encode_video2 which will stop the lookahead thread because of the null frame.
> > > > > switch_h264_encode:
> > > > > if (*got_output) { // Could be more delayed frames
> > > > > ret = avcodec_encode_video2(avctx, pkt, NULL, got_output);
> > > > >  
> > > > >  
> > > > > Is it a bug of mod_av or how can i solve the problem?
> > > > >  
> > > > > Thanks a lot
> > > > >  
> > > > >  
> > > > >  
> > > > >  
> > > > >  
> > > > >  
> > > > >  
> > > > >  
> > > > >  
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> > > >  
> > > > --  
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> > > >  
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