Newest 'ffmpeg' Questions - Stack Overflow

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• Combining multiple clips to form a single video with audio in background [on hold]

  19 septembre 2013, par user1941148

  I am developing an Android app which is combining multiple clips to form a single video and add audio in background of choice. I have gone through various solution like third party libraries but not sure how to actually implement it in Android.

  Some of solution I got are:

  ffmpeg, which is in native C. How to port it to Android? How exactly to use with NDK? Is it helpful to me to use?

• Live Streaming RTMP to RTSP

  19 septembre 2013, par user2794054

  i need to test a restream work like this. now i m using crtmpserver. i want to restream rtmp live source to iis smooth streaming format & rtsp format. Please guide me rtmp live to rtsp live & rtmp to live http streaming (target IIS server)

  Thanks

• During transcoding, does output quality of a video improve when i give output bitrate more than input video's bitrate ?

  19 septembre 2013, par Jobin Jose

  I use ffmpeg for converting videos. As i understand, the bitrate of a video stream is the number of bits which constitute the video over 1 second of time. What happens when i specify the output video bitrate to be more than the input video's bitrate? For example: If bitrate of "Input.mp4" is 2000KBps and i want to convert it to "Output.mp4" with output bitrate set to 3000KBps. How will the converter create the extra 1000 bits(3000-2000) for every second of video?

• c# : Overlay mp3 file to another

  18 septembre 2013, par Jibran Khan

  I have merged 3 mp3 files into one mp3 file simply using the following code

  using (var fs = File.OpenWrite(Path.Combine(txtOutputFile.Text, "new.mp3")))
              {
                  var buffer = File.ReadAllBytes(Path.Combine(txtIntroLoc.Text, fileName1));
                  fs.Write(buffer, 0, buffer.Length);
                  buffer = File.ReadAllBytes(Path.Combine(txtOutroloc.Text, fileName2));
                  fs.Write(buffer, 0, buffer.Length);
                  buffer = File.ReadAllBytes(Path.Combine(txtFileThree.Text, fileName3));
                  fs.Write(buffer, 0, buffer.Length);
                  fs.Flush();
              }
  

  What i want is to overlay another mp3 file which will play in the background of this newly created mp3 file. I know its possible but not getting right way to go to acheive this. Any help will be great. thanks

• FFMPEG : add marquee like text overlay

  18 septembre 2013, par user2792594

  I want to grab a video from v4l2 device, add overlay of moving text and stream it to vlc, how can i do this ? Is there any way to add dynamic overlay using ffmpeg.