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• Zoneminder Watermarking on MP4 video from custom ZM branch

  6 janvier 2015, par moeiscool

  The ZM i have installed is the video branch. I followed these instructions to install it.
  https://github.com/ZoneMinder/ZoneMinder/tree/video
  https://github.com/ZoneMinder/ZoneMinder/issues/452

  I am looking to watermark my recordings. I have successfully achieved what i want on regular ZM. I just need it on the MP4 branch version of ZM. I have used ASR to search for "ffmpeg" and "mp4" but i only found anything relevant to video creation in zmvideo.pl... but i think zmvideo.pl is only for generating videos from JPEG files. I simply want to have the watermark appear on the mp4 file when it is created.

  So in short after a long explanation : Where should I be looking for the commands that create the MP4 files in ZM ? or do i have to add them to jpeg frames somewhere or something ? sorry for the noobiness... I have spent at least 3 hours looking for this and I’m actually sweating from frustration. ANY help at all would be appreciated :) Thanks in advance.

• ffmpeg library m4a moov atom not found when using custom IOContext

  26 avril 2017, par trigger_death

  I’m currently trying to implement FFmpeg into SFML so I have a wider range of audio files to read from but I get the error [mov,mp4,m4a,3gp,3g2,mj2 @ #] moov atom not found when opening an m4a file. Now this only happens when I use a custom IOContext to read the file instead of opening it from URL. This page here says I’m not supposed to use streams to open m4a files but is an IOContext considered a stream ? Because I have no way to open it as a URL as that’s how SFML works.

  // Explanation of InputStream class
  
  class InputStream {
  
      int64_t getSize()
  
      int64_t read(void* data, int64_t size);
  
      int64_t seek(int64_t position);
  
      int64_t tell(); // Gets the stream position
  
  };
  
  
  
  // Used for IOContext
  
  int read(void* opaque, uint8_t* buf, int buf_size) {
  
      sf::InputStream* stream = (sf::InputStream*)opaque;
  
      return (int)stream->read(buf, buf_size);
  
  }
  
  // Used for IOContext
  
  int64_t seek(void* opaque, int64_t offset, int whence) {
  
      sf::InputStream* stream = (sf::InputStream*)opaque;
  
      switch (whence) {
  
      case SEEK_SET:
  
          break;
  
      case SEEK_CUR:
  
          offset += stream->tell();
  
          break;
  
      case SEEK_END:
  
          offset = stream->getSize() - offset;
  
      }
  
      return (int64_t)stream->seek(offset);
  
  }
  
  
  
  bool open(sf::InputStream& stream) {
  
      AVFormatContext* m_formatContext = NULL;
  
      AVIOContext* m_ioContext = NULL;
  
      uint8_t* m_ioContextBuffer = NULL;
  
      size_t m_ioContextBufferSize = 0;
  
  
  
      av_register_all();
  
      avformat_network_init();
  
      m_formatContext = avformat_alloc_context();
  
  
  
      m_ioContextBuffer = (uint8_t*)av_malloc(m_ioContextBufferSize);
  
      if (!m_ioContextBuffer) {
  
          close();
  
          return false;
  
      }
  
      m_ioContext = avio_alloc_context(
  
          m_ioContextBuffer, m_ioContextBufferSize,
  
          0, &stream, &::read, NULL, &::seek
  
      );
  
      if (!m_ioContext) {
  
          close();
  
          return false;
  
      }
  
      m_formatContext = avformat_alloc_context();
  
      m_formatContext->pb = m_ioContext;
  
  
  
      if (avformat_open_input(&m_formatContext, NULL, NULL, NULL) != 0) {
  
          // FAILS HERE
  
          close();
  
          return false;
  
      }
  
  
  
      //...
  
  
  
      return true;
  
  }

• avformat/riff.h : remove unused function parameter "const AVCodecTag *tags" of "void...

  14 juillet 2017, par Aleksandr Slobodeniuk

  avformat/riff.h : remove unused function parameter "const AVCodecTag *tags" of "void ff_put_bmp_header()"
  Reviewed-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavformat/asfenc.c
  • [DH] libavformat/avienc.c
  • [DH] libavformat/matroskaenc.c
  • [DH] libavformat/riff.h
  • [DH] libavformat/riffenc.c
  • [DH] libavformat/wtvenc.c