Recherche avancée

Sur d’autres sites (9057)

• Can't get ffmpeg to flip video 180 degrees from PHP exec call. Works from SSH

  25 octobre 2013, par Brandon Runyon

  When I run ./ffmpeg -i path/video.mp4 -vf "vflip,hflip" -metadata:s:v:0 rotate=0 newvideo.mp4 from the terminal it works well, but when I put this same system call into a PHP exec() ; function it fails.

  example :
  $path = "videos/" ;
  $video = "test_rotated.mp4" ;
  //this script runs and works
  $rotation = exec('./mediainfo —Inform="Video ;%Rotation%" '.$path.$video) ;

  if ((int)$rotation == 180) {
  
  $test = exec("./ffmpeg -i ".$path.$video." -vf \"vflip,hflip\" videos/test_rotatedback.mp4 2>&1");
  
  exec('./mediainfo --Inform="Video;%Rotation%" '.$path.'test_'.$video);
  
  echo "<pre>".$test."</pre>";
  
  }

  The result is that the var $test prints out "Video encoding failed" and I'm not sure why because it's pretty much the same exact syntax, it's just running from PHP but it fails.

• Unable to mux two live streams from webcam using ffmpeg in linux

  24 octobre 2013, par user2902884

  We are trying to multiplex two live streams from webcams into an output file using ffmpeg in linux as follows,

  fmpeg -i "http://10.41.2.57:8090/webcam.asf" -i "http://10.41.2.49:8090/webcam.asf" -map 0:0 -map 1:0 -t 60 "/home/../MuxLiveStream1.flv" 

  ffmpeg stops responding at after a while and the console shows the following output,

  FFmpeg version SVN-r0.5.9-4:0.5.9-0ubuntu0.10.04.3, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: --extra-version=4:0.5.9-0ubuntu0.10.04.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Jan 24 2013 19:42:59, gcc: 4.4.3
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 2.00 (2/1)
  
  Input #0, flv, from 'http:10.41.2.154:8090/webcam.flv':
  
    Duration: 00:00:00.00, start: 1587016.579000, bitrate: 200 kb/s
  
      Stream #0.0: Video: flv, yuv420p, 320x240, 200 kb/s, 2 tbr, 1k tbn, 1k tbc
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 2.00 (2/1)
  
  Input #1, flv, from 'http:10.41.2.57:8090/webcam.flv':
  
    Duration: 00:00:00.00, start: 1587230.806000, bitrate: 200 kb/s
  
      Stream #1.0: Video: flv, yuv420p, 320x240, 200 kb/s, 2 tbr, 1k tbn, 1k tbc
  
  Number of stream maps must match number of output streams

  Is there a mistake in the command or is there anything else that needs to be done ?

• ffmpeg bash script to generate thumbnails for all videos in a folder

  17 novembre 2017, par smokeyone

  I found this bash script via google and would like to modify it slightly to generate jpg thumbnails from a desktop folder call indie. All my mts files are named by their exact time taken and ffmpeg is installed.

  This is the original script :

  for f in *.mov; do
  
      ffmpeg -y -i "$f" -f image2 -ss 10 -vframes 1 -an "${f%.mov}.jpg";
  
  done

  I changed it to this :

  for f in Desktop/indie/*.mts; do
  
      ffmpeg -y -i "$f" -f image2 -ss 10 -vframes 1 -an "${f%.mts}.jpg";
  
  done

  I am hoping someone can tell me where I have gone wrong (my terminal output just says no such file).

  Thanks