Recherche avancée

Sur d’autres sites (3926)

• android ffmpeg command not working on HTC One M8 5.0.1

  22 août 2017, par mark mosleh

  I have been creating an application that records video with audio through the ffmpeg library.
  I also added ffmpeg.exe to raw files and am installing the binary inside project to run ffmpeg commands.

  I have tested many commands that works on most of the devices but on HTC one M8 it is not giving any output nor error and i have no clue why.

  The command is intended to take an input video.mp4 and create a slow-motion video output.mp4

  The command is the following :

  /data/data/com.vidcutter/cache/ffmpeg -i /storage/emulated/0/DCIM/markapp/TEMP_1436532617119/0.mp4 -filter:v setpts=3.0*PTS -q 0 -an /storage/emulated/0/DCIM/markapp/TEMP_1436532617119/1000.mp4

  It runs smoothly on all devices ive tested on except the M8

  Any help will be much appreciated !

  PS : It works ironically smoothly on HTC One M7 lol

• ffmpeg youtube livestream not working

  21 avril 2017, par Select

  Today i tried using ffmpeg on my debian 8.3 server to livestream 24/7 hours. However it doesnt work.

  #! /bin/bash
  
  
  
  INRES="1280x1024" # input resolution (The resolution of the program you want to stream!)
  
  OUTRES="1024x790" # Output resolution (The resolution you want your stream to be at)
  
  FPS="60" # target FPS
  
  QUAL="ultrafast" 
  
  # one of the many FFMPEG presets that can be used 
  
  # If you have low bandwidth, put the qual preset on 'ultrafast' (upload bandwidth)
  
  # If you have medium bandwitch put it on normal to medium or fast
  
  STREAM_KEY="hidden" # this is your streamkey
  
  
  
  
  
  
  
  
  
  ffmpeg -f "file.avi" -s "$INRES" -r "$FPS" -i :0.0 \
  
  -f alsa -ac 2 -i pulse -vcodec libx264 -s "$OUTRES" \
  
  -acodec libmp3lame -ab 128k -ar 44100 -threads 0 \
  
  -f flv "rtmp://a.rtmp.youtube.com/live2" 

  it gives me the output

  Unknown input format : ’file.avi’

• OpenCV cv2 not working in Windows 7

  6 septembre 2014, par Subhendu Sinha Chaudhuri

  I have a Windows 7 SP1 64 Bit machine with open cv2.4.9 installed and python 2.7.6 installed.
  I use pre compiled version of opencv

  The following code works perfectly for me

  import cv2.cv as cv
  
  import time
  
  
  
  cv.NamedWindow("camera", 0)
  
  
  
  capture = cv.CaptureFromCAM(0)
  
  
  
  while True:
  
      img = cv.QueryFrame(capture)
  
      cv.ShowImage("camera", img)
  
      if cv.WaitKey(10) == 27:
  
          break
  
  cv.DestroyAllWindows()

  Now when I try to use this code

  import cv2
  
  import numpy as np
  
  cam = cv2.VideoCapture(0)
  
  s, img = cam.read()
  
  
  
  winName = "Movement Indicator"
  
  cv2.namedWindow(winName, cv2.CV_WINDOW_AUTOSIZE)
  
  
  
  while s:
  
    cv2.imshow( winName,img )
  
  
  
    s, img = cam.read()
  
  
  
    key = cv2.waitKey(10)
  
    if key == 27:
  
      cv2.destroyWindow(winName)
  
      break
  
  
  
  print "Goodbye"

  The window is opened , the camera is initialized (as camera lights are on) , but nothing is displayed and the window closes and the program exits.

  WHERE am I going wrong ??

  QUESTION 2
  Can any one also suggest me how to capture live video stream from my Linux machine 192.168.1.3 . The stream is being generated by ffmpeg.

  The video stream can be opened in web browser. But I want to capture it with opencv and python.