Newest 'ffmpeg' Questions - Stack Overflow

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• BGRA to AVFrame(ffmpeg) and viceversa ? for IOS

  8 février 2012, par Asta ni enohpi

  Am working Video Processing in IOS(iphone/ipod/ipad) Using Objective c. i am using AVFoundation Framework to Capture Video . i want to Encode/decode those video frame using ffmpeg-libx264. i have compiled ffmpeg-x264 lib for ios. i got kCVPixelFormatType_32BGRA from AVFoundation.

  my problem is
  1.How to convert kCVPixelFormatType_32BGRA to AVFrame for enode using avcodec_encode_video?

  2.How to convert AVFrame to kCVPixelFormatType_32BGRA @ decode side from avcodec_decode_video2?

  Please help me to start above process or give path for working tutorial .Thanks in advance.

• live-streaming media with

  8 février 2012, par Thanh Hoang

  My live-streaming system streams media in following step:

  1. Server loads source (from a file, webcam,...)
  2. Server decodes this source by using ffmpeg to get audio and video stream in raw format
  3. Server encodes audio and video to aac and libx264 and then stores them with [AVPacket] (http://ffmpeg.org/doxygen/0.6/avpacket_8c.html)
  4. Then server transmits these packets to client
  5. Client receive these packets, then calculates pts and dts and then display them using libsdl. (following this [tutorial] (http://dranger.com/ffmpeg/tutorial01.html).

  And now, I want to change in client. I want when client receive audio and video packets, It will stream them under http stream, rtp stream or somethings like those to a player such as windows media player, flash player.... Anyone can helps me? Thanks a lot. :)

• xuggler could not find input codec id (avi, msvideo1)

  8 février 2012, par mrzasa

  I convert video from different formats to flv using xuggle MediaTool. For most of cases it works fine, but when I try an .avi file encoded with msvideo1, indeo3 or cinepark, xuggler throws java.lang.IllegalArgumentException: could not find input codec id on reader.readPacket().

  I checked, that my ffmpeg supports msvideo decoding:

   > ffmpeg -codecs
   (...)
   D V D  msvideo1        Microsoft Video 1
   D V D  indeo3          Intel Indeo 3
   D V D  cinepak         Cinepak
  

  What is more, I'm able to convert files encoded with these codecs from the command line (usign ffmpeg).

  What might be the reason for such behaviour?

• Tutorial in FFMpeg or Sample Program

  8 février 2012, par user1195018

  I want to make a sample audio or video player in ffmpeg

  I found in google this link and i can't compile the sample because the compiler (gcc) said, some of functions or variables are deprecated/undefined/undeclared.

  Any tutorial or sample code in ffmpeg? or Will you give me a sample code of audio/video player using ffmpeg?

  Please.

• 32BGRA to AVFrame(ffmpeg) and viceversa ? for IOS

  8 février 2012, par Asta ni enohpi

  Am working Video Processing in IOS(iphone/ipod/ipad) Using Objective c. i am using AVFoundation Framework to Capture Video . i want to Encode/decode those video frame using ffmpeg-libx264. i have compiled ffmpeg-x264 lib for ios. i got kCVPixelFormatType_32BGRA from AVFoundation.

  my problem is
  1.How to convert kCVPixelFormatType_32BGRA to AVFrame for enode using avcodec_encode_video?

  2.How to convert AVFrame to kCVPixelFormatType_32BGRA @ decode side from avcodec_decode_video2?

  Please help me to start above process or give path for working tutorial .Thanks in advance.