[FFmpeg-trac] #6300(ffmpeg:new): cseq warning if i http stream more than 5 camera

FFmpeg trac at avcodec.org
Mon Apr 10 14:22:43 EEST 2017

#6300: cseq warning if i http stream more than 5 camera
             Reporter:  ankit.gupta  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:
             Keywords:               |  unspecified
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
 Hi All,

 spent a significant time but not able to solve this. Any help will be
 highly appreciated.

 Context is I am using ffmpeg to generate http streaming using below

 ffmpeg -rtsp_transport tcp -r 30 -i rtsp://root:kastle@
 /axis-media/media.amp -c:v libx264 -video_size 640*480 -crf 35 -preset
 ultrafast -maxrate 500k -bufsize 500k -r 15 -g 30 -movflags +faststart
 -tune zerolatency -hls_time 1 -hls_list_size 4 -start_number 0 -hls_wrap 4
 -hls_segment_filename S:/playlist_%RANDOM%_%1d.ts -hls_allow_cache 0
 -threads 1 -loglevel warning -y S:/playlist.m3u8

 it works well for upto 5 camera.

 As and when I start 6th i started facing two errors:
 1. The delay in video start to increase, that is if single camera I have
 delay of 8 second with six it will increase more than 30 seconds.
 Sppedtest.net shows 32mbps speed.

 2. I started getting frequent warning of cseq once I start streaming sixth
 camera, like cseq 8 expected 7 received. Its continuous.

 So it shows with increased number of camera there is some issue that might
 needs some command parameter updates? any suggestion.

 Also how much maximum number of camera streaming I can support on
 following configuration
 4cpu, 2 core, 7.5 GB Ram

Ticket URL: <https://trac.ffmpeg.org/ticket/6300>
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