Newest 'ffmpeg' Questions - Stack Overflow

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• How to generate fragmented mp4 files programmatically

  9 mars 2017, par 方柏棟

  I have a media .h264 live streaming server, and want to mux .h264 frames to fragmented mp4 files. I am wondering does any library could support this?

  As far as I know, ffmpeg.exe and Bento4 could support this, but I want to use a library to do that in my code, not executing another process.

  To specify my point, I want to generate fragmented mp4 files, which could be achieved by executing ffmpeg.exe like below,

  ffmpeg -i xx.h264 
          -vcodec copy -an -f mp4 -reset_timestamps 0 
          -movflags empty_moov+default_base_moof+frag_keyframe -loglevel quiet 
          xxx.mp4"
  

  I want to mux mp4 files in my code, not create another process to do it.

  Thanks.

• How to set position in pixel or percentage of water mark video using ffmpeg bottom left ?

  9 mars 2017, par Remya

  My code is below

  shell_exec('/usr/local/bin/ffmpeg -i uploads/videos/profile/'.$video.' -vf "movie=uploads/whatermark_logo.png [watermark]; [in][watermark] overlay=10:main_h-overlay_h-10 [out]" uploads/videos/profile/star_'.$video.' >/dev/null 2>&1 &');
  

• embed m3u8 file in HTML5 page with no plugin support

  9 mars 2017, par A4u

  I have used FFMPEG to convert .mp4 file to .m3u8 and .ts file , now i need to embed these video to another site which has no player plugin support (as we embed youtube videos). Is there any way to do it ..

• How to convert all types (audio*) to mp3 ? Using FFMPEG

  9 mars 2017, par Matheus Miranda

  It is possible to convert all audio to mp3?

  System.Diagnostics.Process proc = new System.Diagnostics.Process();
                      proc.EnableRaisingEvents = false;
                      proc.StartInfo.FileName = @"""C:\ffmpeg\bin\ffmpeg.exe""";
                      proc.StartInfo.Arguments = "-i C:\\Matheus\\Matheus_Project\\Matheus_Project\\App_Data\\" + User.Identity.Name + "\\" + fileNameAndType + " -acodec libmp3lame -ab 128k C:\\Matheus\\Matheus_Project\\Matheus_Project\\App_Data\\" + User.Identity.Name + "\\" + fileName + ".mp3";  /* use /y to overwrite if there it exists already or will fail */
                      proc.StartInfo.UseShellExecute = false;
                      proc.StartInfo.CreateNoWindow = false;
                      proc.StartInfo.RedirectStandardOutput = true;
                      proc.StartInfo.RedirectStandardError = true;
                      proc.Start();
  
                      var output = proc.StandardOutput.ReadToEnd();
                      string output_error = proc.StandardError.ReadToEnd();
  
                      proc.WaitForExit();
                      proc.Close();
  

  Example:

  • audio/x-m4a to mp3

  • audio/mp4 to mp3

  • audio/basic to mp3

  • audio/L24 to mp3

  • audio/mid to mp3

  • audio/x-aiff to mp3

  • audio/x-mpegurl to mp3

  • audio/vnd.rn-realaudio to mp3

  • audio/ogg to mp3

  • audio/vorbis to mp3

  • audio/vnd.wav to mp3

  Any idea ?

• Merge all .h264 files in directory in alphabetical order

  9 mars 2017, par nicolashahn

  I have a camera that records in 5 second clips with filenames that are timestamps:

  2017-03-08-09-54-27.334326-000000.h264
  2017-03-08-09-54-27.334326-000001.h264
  2017-03-08-09-54-27.334326-000002.h264
  2017-03-08-09-54-27.334326-000003.h264
  ...
  

  What is the easiest way to merge these in order into one video file on OSX?