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• http live video streaming and embed ffplay ?

  17 novembre 2017, par ansari

  I have one query related to http live streaming concept.

  In my cases :

  case-1 : when I am playing the live streaming in ffplay, gives at most 2 seconds dealy.

  case-2 : while playing the live streaming in vlc player , gives at most 5 seconds delay.

  case-3 : In videojs player , shows at most 13 seconds delay.

  Is there any solution to get case-1 in both 2 and 3 cases ? And also May i know that can we embed ffplay into html page ?

• ffmpeg always gives me input/output error for the first time running the command

  15 novembre 2023, par Simon Lau

  I'm using ffmpeg to push raspberrypi video feeds (CSI camera) to a nginx-RTMP server then the nginx push it to youtube.
My problem is, every time when I run the ffmpeg command, it always gives me input/out error. Then it is working fine when I run the exact same ffmpeg command for the 2nd time.
How do I resolve this problem ?
I want to start the ffmpeg command in a script file and put the script in crontab so that it can start the live streaming automatically. But this error makes it impossible to do that.

  



  my ffmpeg command is as below(change the real domain name to mydomain.com) :

  



  ffmpeg -thread_queue_size 512 -f v4l2  -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100  -input_format yuyv422 -video_size 1280x720 -framerate 30 -i /dev/video0 -vf eq=gamma=1.5:saturation=1.3 -c:v h264_omx -b:v 20480K -vsync 1 -g 16  -f flv rtmp://mydomain.com:1935/live/


  



  the error log :

  



  Input #1, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 474200.421802, bitrate: 442368 kb/s
    Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1280x720, 442368 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
rtmp://rtmp.simonliu.space:1935/live/: Input/output error


  


• Live Stream on the fly generated video in asp.net core

  3 juillet 2023, par juffma

  I have a problem where i'm not able to stream a video over the Network due to it being generated live. Currently it's working using MJPEG but thats slow (especially if not in the local network) and has much overhead. I receive the frames of the video as images and currently convert them to JPEG and then build an MJPEG stream.

  


  Would it be possible to generate another stream directly ? So for example "bake" the images into another type that isn't this heavy ?
If not, i currently think of the option to use FFMPEG to capture the MJPEG strteam and pipe it's output back into the App. Now, with this approach, what format would be best suited and how would i live stream it ? (eg. build a controller that correctly serves the FFMPEG pipe output (which, if it helps, i'm getting at a 4096 bytes large buffer)).

  


  Saving the Video to Disk and then just multipart streaming the file is not an option as it would not be live anymore.