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• H264 : decode series of nal units with ffmpeg

  1er août 2014, par jsim

  I tried to decode a series of nal units with ffmpeg (libavcodec) but I get a "no frame" error. I produced the nal units with the guideline at http://stackoverflow.com/questions/2940671/how-to-encode-series-of-images-into-h264-using-x264-api-c-c. I tried the following strategy for decoding :

  avcodec_init();  
  
  avcodec_register_all();  
  
  AVCodec* pCodec;  
  
  pCodec=lpavcodec_find_decoder(CODEC_ID_H264);  
  
  AVCodecContext* pCodecContext;  
  
  pCodecContext=lpavcodec_alloc_context();  
  
  avcodec_open(pCodecContext,pCodec);  
  
  AVFrame *pFrame;  
  
  pFrame=avcodec_alloc_frame();
  
  //for every nal unit:    
  
      int frameFinished=0;  
  
      //nalData2 is nalData without the first 4 bytes
  
      avcodec_decode_video(pCodecContext,pFrame,&frameFinished,(uint8_t*) nalData2,nalLength);

  I passed all units I got to this code but frameFinished stays 0. I guess there must be something wrong with the pCodecContext setup. Can someone send me a working example ?

  Thank you

• Convert a series of jpg into an mov file in Ruby (or using any language)

  9 avril 2015, par xeroshogun

  I am making a site in Ruby in which I have a series of images, (almost like a powerpoint) and I need to automatically convert those images into one continuous video file (mov, mpeg) that shows each image for 5 seconds or so. Any one have any clues where to start.

  I’m also open to using another language if there are tools to get the job done.

• Anomalie #3863 : liste de tous les plugins dans les résultats de recherche du back-office

  25 novembre 2016, par b b

  Appliqué par svp:r100674 et reporté en 3.1 par http://zone.spip.org/trac/spip-zone/changeset/100675 merci :)