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• how to set frame delay when use ffmpeg to convert images to gif

  24 juin 2021, par yang

  I want to convert image sequence to gif and I want each frame to last for a certain amount of time, but I couldn't find an example of how to do this.

  



  I know this basic command works

  



  ffmpeg -y -i %0d_Frame.jpg output.gif

  



  but how can I let each frame stay for 1 second ?

  


• What version of FFMPEG should I use on DEBIAN to transcode RTSP to RTMP ?

  20 août 2013, par user300675

  I was using that command :

     ffmpeg -i rtsp://login:password@90.70.42.54:554/axis-media/media.amp -f flv  rtmp://localhost:1935/live/yarek

  WHich worked fine on 1 windows,

  This command gives errors on linux1
  (ffmpeg version 0.8.6-4:0.8.6

  WriteN, RTMP send error 10053 (129 bytes)
  
  WriteN, RTMP send error 10053 (45 bytes)
  
  WriteN, RTMP send error 10038 (42 bytes)
  
  av_interleaved_write_frame(): Operation not permitted

  and gives errors on Linux2 : (ffmpeg version 0.7.15)

  [h264 @ 0x98e2f80] RTP: PT=60: bad cseq c54f expected=b90c
  
  [h264 @ 0x98e2f80] RTP: PT=60: bad cseq b90c expected=c551
  
  [h264 @ 0x98e2f80] RTP: PT=60: bad cseq c552 expected=b90f
  
  [rtsp @ 0x98de5e0] Estimating duration from bitrate, this may be inaccurate
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
  
  Input #0, rtsp, from 'rtsp://login:password@90.70.42.54:554/axis-media/media.amp':
  
    Metadata:
  
      title           : Media Presentation
  
    Duration: N/A, start: -4756.582667, bitrate: N/A
  
      Stream #0.0: Video: h264 (Main), yuvj420p, 1024x768 [PAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 180k tbc

  So I am 100% sure that the command line is GOOD, but FFMPEG is bad.

  My question is : What version of FFMPEG should I use on DEBIAN to transcode RTSP to RTMP ?

  Can someone recommend me a CORRECT version of FFMPEG that works ?

  Regards

• View the incoming live mpeg stream from python socket

  19 janvier 2017, par ITried

  So I have an Intel Edison microcontroller running Linux that has a usb cam attached to it. It has a python script that uses ffmpeg to send the mpeg stream to a specific ip:port. I have another ’server’ script on my computer that opens a basic socket and binds on that port. The stream is clearly transferring because when I receive on the server, I print to terminal and all this gibberish and outputs. My question is how can I use ffmpeg or OpenCV (or anything else really) to receive from this port and view it real time ?
  On the Intel Edison, this command transmits data :

  os.system("/home/root/bin/ffmpeg/ffmpeg -s 640x480 -f video4linux2 -i /dev/video0 -f mpeg1video -b 800k -r 30 http://myip:8082")

  On the ’server’ side this the basic socket for binding and receiving.

  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  
  s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  
  s.bind(('',8082))
  
  s.listen(1)
  
  conn, addr = s.accept()
  
  print "Connected to:", addr
  
  while True:
  
      data = conn.recv(1024)
  
      if data:
  
          print data

  I want to be able to view the incoming stream live, capture images, or save to video file. I tried looking online, but have not found any for live stream capture through python socket.

  thanks in advance !