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• ffmpeg rtmp connection params

  12 novembre 2014, par Samson

  I connect to FMS 3.5 and publish a live stream using the following Flex code :

  //NetConnection

  nc.connect("rtmp://[HOST]/live", "10021237", "evq600qquf9u6cep69ln5nt651");

  //NetStream

  ns.publish("mp4:10021237.mp4", "live");

  Now I want to publish a video file using ffmpeg but I m failing to pass the connection params. How can I achieve that ?

  ffmpeg -re -i 1412322898.mp4 -vcodec libx264 -f flv "rtmp://[HOST]/live/mp4:10021237.mp4" -rtmp_conn "S:10021237 S:evq600qquf9u6cep69ln5nt651"

  FFMPEG version

  ffmpeg version 2.1.4 Copyright (c) 2000-2014 the FFmpeg developers
 built on Sep  8 2014 23:58:05 with gcc 4.7 (Ubuntu/Linaro 4.7.2-2ubuntu1)
 configuration: --enable-gpl --enable-libx264 --enable-libfaac --enable-nonfree
 libavutil      52. 48.101 / 52. 48.101
 libavcodec     55. 39.101 / 55. 39.101
 libavformat    55. 19.104 / 55. 19.104
 libavdevice    55.  5.100 / 55.  5.100
 libavfilter     3. 90.100 /  3. 90.100
 libswscale      2.  5.101 /  2.  5.101
 libswresample   0. 17.104 /  0. 17.104
 libpostproc    52.  3.100 / 52.  3.100
Hyper fast Audio and Video encoder

• How do you pipe video from one tool to another on Raspberry Pi ? [closed]

  11 septembre 2024, par Spenser Spratlin

  I'm trying to pipe video from libcamera to ffmpeg to get a consistent video stream from a Pi Camera Module 2 to a Java Program

  


  I'm using the following

  


  

  • OpenJDK/JRE 17

  


  • Raspberry Pi 5 Model B

  


  • Debian 12 (bookworm)

  


  • Arm64

  


  


  Since Raspberry Pi changed their video framework, you can no longer call a single /dev/video0 device. You have to go through the Media Controller using libcamera or rpicam. I'm wondering how I can pipe the video created from libcamera or rpicam into a useable format to intake with ffmpeg.

  


• Can OpenCV decode H264 - MPEG-4 AVC (part 10)

  15 avril 2015, par Sergiy

  I am trying to use OpenCV (python bindings) to connect to a UDP multicast and recover individual received frames for post-processing.

  I can connect to my multicast via VLC, and VLC displays the broadcast with no issues at all. VLC reports that the codec it uses for decoding is H264 - MPEG-4 AVC (part 10).

  When I try to decode using OpenCV, I do see my video stream, but many frames appear fragmented. The frames appear as if the last line of pixels just got repeated to fill in the rest of the image (sometimes 75% or more of the whole image). OpenCV reports decoding errors (error while decoding MB ...., bytestream ).

  Is there any way to force OpenCV to use whatever codec VLC is using ? I tried to specify the specific codec to use in my code for OpenCV but it seems to have no effect.

  The code I am using is below :

  import numpy as np
  
  import cv2
  
  from cv2 import cv
  
  
  
  cap = cv2.VideoCapture()
  
  cap.set(cv.CV_CAP_PROP_FOURCC, cv.CV_FOURCC('A','V','C','1')) 
  
  cwi=cap.open(r'myurlandport')
  
  
  
  counter = 0
  
  
  
  while(cap.isOpened()):
  
  
  
      ret, frame = cap.read()
  
  
  
  
  
      counter += 1
  
  
  
      if counter % 30 == 0:
  
          cv2.imshow('frame', frame)
  
          if cv2.waitKey(1) & 0xFF == ord('q'):
  
              break
  
  
  
  cap.release()
  
  cv2.destroyAllWindows()