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• SWF to PNG.. but merge all pngs inside into 1

  14 novembre 2014, par Jayden

  The title says it all,

  I’ve tried swftools and ffmepg but I don’t ’think’ they achieve what I need to do.

  Basically there is a SWF file that is made up of up to 60 images, them 60 images inside the SWF all are parts of an image that make up 1 final image or animation on an online game.

  I need to be able to download the swf as a png image with the same output it will look like on the virtual game - so not 60 images if seperate graphics, just one image with them all (merged ?) together.

  I am not even sure if this is possible to do in the commandline so if you understand any of this, please point me in the right direction.

  I am using Ubuntu 14.04

• ffmpeg combine audio and video different lengths

  9 novembre 2014, par xhassassin

  I have an audio and video file. The audio file is the correct length but the video file is not due to some errors in the video generation. I want to combine the two and stretch the video file so that it’s the same length as the audio file. What’s the correct way for me to do this ?

  One way I’ve found is I can stretch the video file using this : http://blog.grio.com/2012/01/fast-and-slow-motion-video-with-ffmpeg.html

  And then I can combine the audio and video file normally.

  However this is two passes. Is there any way I can do this all at once ?

• FFmpeg : Remux f4v cutted from stream to mp4

  10 mai 2012, par Penthi

  I have a mp4 file cutted from a H.264/AAC stream with Wowza Media Server.
  After the cutting, the file was forced to mp4 format with the following command :

  ffmpeg -i wowza_output_file -vcodec copy -acodec copy -f mp4 -y wowza_output_file_copy

  From there I renamed it to test_f4v.mp4 and took ffprobe, to take a look at the file :

  ffprobe version 0.8, Copyright (c) 2007-2011 the FFmpeg developers
  
    built on Jul 20 2011 13:32:19 with gcc 4.4.3
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264
  
    libavutil    51.  9. 1 / 51.  9. 1
  
    libavcodec   53.  7. 0 / 53.  7. 0
  
    libavformat  53.  4. 0 / 53.  4. 0
  
    libavdevice  53.  1. 1 / 53.  1. 1
  
    libavfilter   2. 23. 0 /  2. 23. 0
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  51.  2. 0 / 51.  2. 0
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test_f4v.mp4':
  
    Metadata:
  
      major_brand     : f4v 
  
      minor_version   : 0
  
      compatible_brands: isommp42m4v 
  
      creation_time   : 2012-04-23 12:36:06
  
    Duration: 01:00:01.84, start: 0.000000, bitrate: 2004 kb/s
  
      Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 854x480 [PAR 1:1 DAR 427:240], 1903 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Metadata:
  
        creation_time   : 2012-04-23 12:36:06
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 96 kb/s
  
      Metadata:
  
        creation_time   : 2012-04-23 12:36:06

  Now there is a problem. I need a file, which has the following meta data :

  major_brand     : mp42
  
  compatible_brands: isom

  Is there a way to remux the mp4 file to get the major_brand and compatible_brands to the described values with ffmpeg ?