Newest 'ffmpeg' Questions - Stack Overflow

Les articles publiés sur le site

• Video Transcoding/Conversion using Java

  16 janvier 2012, par MalTec

  I would like to convert a video from one format to another. Initially, I want to convert MP4 to AVI or any other more suitable video format.

  Came across the ffmpeg library. Is is the best solution?

  Came across Xubber and Jave for the same? Any experiences?

• ffmpeg converting multiple audio formats to mp3

  16 janvier 2012, par Andrew

  I was wondering how can I convert multiple audio formats, i.e. wav, aac, m4a to mp3 at once with ffmpeg and php (not ffmpeg-php)?

  So if this:

  ffmpeg -i son_origine.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 son_final.mp3

  Converts wav to mp3, how can I add multiple extensions in there?

• ff-mpeg on GoDaddy

  14 janvier 2012, par Mykhas' Kobernyk

  I want ff-mpeg module for creating screenshot from users video-files.Do GoDaddy give this php module to their users? How can I get it there? Maybe, I can use something another with better support (I'm talking about module, not about hosting yet)?

• FFMPEG API (compiling with specific formats)

  14 janvier 2012, par JS.

  I am trying to compile FFMPEG to support a single video type (*.mp4).

  I have everything working when I compile for all, but I do not want the extra over-head when I will only use a single format.

  Here's my compile FLAGS now (non-working for MP4). I am sure there are other codecs/decoders I need to specifically enable, but am just having a hard time finding them.

  Compiler directives showing the build flags below:

  FLAGS="$FLAGS --disable-everything"
  FLAGS="$FLAGS --enable-encoder=mpeg4video" ## This is the question, what all needs enabling?
  

  I just do not know video standards well enough to know exactly which codecs / encoders / etc. to turn on.

  av_register_all();
  avdevice_register_all();
  
  byteCtx = av_alloc_put_byte(buffer, BUFFER_SIZE, 0, f, ReadFunc, NULL, SeekFunc);
  if (!byteCtx) {
      return;
  }
  // Open video file (here's the failure, doesn't happen when compiled for all)
  inputFormat = av_find_input_format("MP4");
  if (!inputFormat) {
      LOGE(ANDROID_LOG_ERROR, "NDK:", "Null inputformat!");
      return;
  }
  

• ffmpeg c api for cutting video

  13 janvier 2012, par user1148080

  first thing sorry for my bad english, i'm making an android app that need to get part of a video, the idea is i need a method that get input a video file, start-time, end-time then cutting video from star-time to end-time and output to a new file, i get ffmpeg for android from http://bambuser.com/opensource and able to compile it, integrate with JNI, but now i dont know which ffmpeg's api to use for do the thing a need, any help, example are much appreciated.