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• DirectShow RTSP SourceFilter with MPEG-4 Video Stream

  5 octobre 2011, par 6.45.Vapuru

  I create a simple direct show source filter using FFmpeg.I read rtp packets from RTSP source and give them to decoder. It works for h264 stream.

  MyRtspSourceFilter[H264 Stream] ---> h264 Decoder --> Video Renderer

  The bad news is that it does not work for MPEG-4. I can able to connect my rtsp source filter with MPEG-Decoder. I got no exception but video renderer does not show anything. Actually just show one frame then nothing [just stop]... Decoders and Renderers are 3rd party so i can not debug them.

  MyRtspSourceFilter[MP4 Stream] ---> MPEG-4 Decoder --> Video Renderer

  I can able to get rtp packets from MPEG-4 RTSP Source using FFmpeg sucessfully.There is no problem with it.

  It seems that i have not set something(?) in my Rtsps Source
  Filter which is not necessary for H264 stream but may be important for
  MPEG-4 stream

  What may cause this h264 stream and MPEG-4 stream difference in a direct show rtsp source filter ? Any ideas.

  More Info :

  — First i try some other rtsp source filters for MPEG-4 Stream...Although my rtsp source is same i see different subtypes in their pin connections.

  — Secondly i realy get suspicious if the source is really MPEG-4 SO i check with FFmpeg...FFmpeg gives the source codec id as "CODEC_ID_MPEG4".

  Update :
  [ Hack ]

  I just set m_bmpInfo.biCompression = DWORD('xvid') it just worked fine...But it is static. How to dynamically get/determine this value using ffmpeg or other ways...

• Revision 229 : Fixed line endings and file properties.

  16 juin 2011, par marc.noirot

  Changed Paths :
   Modify /trunk/AUTHORS

  
   Modify /trunk/CMakeLists.txt

  
   Modify /trunk/COPYING

  
   Modify /trunk/ChangeLog

  
   Modify /trunk/INSTALL

  
   Modify /trunk/Makefile.am

  
   Modify /trunk/NEWS

  
   Modify /trunk/README

  
   Modify /trunk/THANKS

  
   Modify /trunk/TODO

  
   Modify /trunk/config-cmake.h.in

  
   Modify /trunk/configure.ac

  
   Modify /trunk/schemas/Amf0.xsd

  
   Modify /trunk/schemas/Makefile.am

  
   Modify /trunk/schemas/TestAmf0.xml

  
   Modify /trunk/schemas/TestFlv.xml

  
   Modify /trunk/schemas/TestReport.xml

  
   Modify /trunk/schemas/flv.xsd

  
   Modify /trunk/schemas/report.xsd

  
   Modify /trunk/src/CMakeLists.txt

  
   Modify /trunk/src/check.c

  
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   Modify /trunk/src/compat/getopt.c

  
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   Modify /trunk/src/compat/getopt1.c

  
   Modify /trunk/src/compat/gettext.h

  
   Modify /trunk/src/compat/win32_tmpfile.c

  
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   Modify /trunk/src/dump_raw.c

  
   Modify /trunk/src/dump_raw.h

  
   Modify /trunk/src/libyaml/CMakeLists.txt

  
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   Modify /trunk/src/libyaml/api.c

  
   Modify /trunk/src/libyaml/config.h

  
   Modify /trunk/src/libyaml/dumper.c

  
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   Modify /trunk/src/libyaml/scanner.c

  
   Modify /trunk/src/libyaml/writer.c

  
   Modify /trunk/src/libyaml/yaml.h

  
   Modify /trunk/src/libyaml/yaml_private.h

  
   Modify /trunk/src/update.c

  
   Modify /trunk/src/update.h

  
   Modify /trunk/src/util.c

  
   Modify /trunk/src/util.h

  
   Modify /trunk/tests/Makefile.am

  
   Modify /trunk/tests/check_amf.c

  
   Modify /trunk/tests/check_flv.c

  
  
  Fixed line endings and file properties.

• avformat/mpegtsenc : Fix mpegts_write_pes() for private_stream_2 and other types

  25 avril 2021, par zheng qian

  avformat/mpegtsenc : Fix mpegts_write_pes() for private_stream_2 and other types
  According to the PES packet definition defined in Table 2-17 of ISO_IEC_13818-1
  
  specification, some fields like PTS/DTS or pes_extension could only appears if
  
  the stream_id meets the condition :
  if (stream_id != 0xBC &&  // program_stream_map
  
      stream_id != 0xBE &&  // padding_stream
  
      stream_id != 0xBF &&  // private_stream_2
  
      stream_id != 0xF0 &&  // ECM
  
      stream_id != 0xF1 &&  // EMM
  
      stream_id != 0xFF &&  // program_stream_directory
  
      stream_id != 0xF2 &&  // DSMCC_stream
  
      stream_id != 0xF8)    // ITU-T Rec. H.222.1 type E stream
  And the following stream_id types don't have fields like PTS/DTS :
  else if ( stream_id == program_stream_map
  
  || stream_id == private_stream_2
  
  || stream_id == ECM
  
  || stream_id == EMM
  
  || stream_id == program_stream_directory
  
  || stream_id == DSMCC_stream
  
  || stream_id == ITU-T Rec. H.222.1 type E stream ) 
  
      for (i = 0 ; i < PES_packet_length ; i++) 
  
          PES_packet_data_byte
  
      
  
  
  Current implementation skipped the check of stream_id causing some kind of
  
  streams like private_stream_2 to be incorrectly written with actually a
  
  private_stream_1-like PES header with PTS/DTS field. For example, Japan DTV
  
  transmits news and alerts through ARIB superimpose that utilizes
  
  private_stream_2 still could not be remuxed correctly for now.
  This patch set fixes the remuxing for private_stream_2 and
  
  other stream_id types.
  Signed-off-by : zheng qian <xqq@xqq.im>
  
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] libavformat/mpegtsenc.c