Newest 'ffmpeg' Questions - Stack Overflow

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• FFMPEG converted file for jwplayer shows black [migrated]

  24 octobre 2013, par Karolis Narkevičius

  im new to ffmpeg, and I'm trying to convert it to mp4 to play on jwplayer, the video converts, the sound is good, but all i can see is black color, maybie anyone knows the answer to this problem?

  ffmpeg -y -i Bear.wmv -vcodec libx264 -b:v 1000k -bufsize 1000k -preset:v ultrafast -movflags +faststart -crf 0 -vf scale=800:400 -ab 128k -vsync 2 -strict -2 outas.mp4
  

  my ffmpeg code my ffmpeg version 2.0.1

• ffmpeg failed to convert swf action script file into mp4

  24 octobre 2013, par Kazim King

  i am using ffmpeg for swf to mp4 conversion when conversion is complete swf file cannot convert properly one image is out sourcing in swf file they are not showing in mp4 file.

  `$ffmpeg = '/usr/bin/ffmpeg';
  $cmd = "$ffmpeg -i sk.swf sk.mp4";
  shell_exec($cmd);`
  

  please provide any tips for conversion and provide names of any libraries for php Any answers on how to do this are greatly appreciated.

• How to split video into frame using xuggler or ffmpeg ? [on hold]

  24 octobre 2013, par user2914049

  I am new in JAVA and Xuggler I am working on a project video steganography so I want to know how to use Xuggler for splitting video into frame plz tell me step by step process or give me sourcecode

• 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?

• Android : ffmpeg integration [on hold]

  23 octobre 2013, par JazB

  I've an android app that uses the default media player. But that one is giving me nothing but problems. So I wanted use ffmpeg in my app.

  I've read a number for articles on web and questions on stackoverflow, but I've still not made any progress.

  As per my understanding of using native code in Java, I need a library (a .so or dll) file and a JNI wrapper.

  Now where can I find these two things? I've seen .so files in the apk of different projects like guardian etc.

  Why every article I read tells me to get jjmpeg 'c' code, go though a number of steps. Why is this not as simple as a downloadable library(.so) and jni files?

  Being a Windows only user isn't making any easy either.