[Freeswitch-users] H264 Encoding Error

郭秋平 guoqiuping81112 at 163.com
Wed Mar 2 17:06:33 MSK 2016


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> 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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> 
> _________________________________________________________________________
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> 
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