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• ffmpeg : Get last 10 seconds of live stream [duplicate]

  7 janvier 2020, par Manuel

  This question already has an answer here :

  • FFMpeg Copy Live Stream (Limit to 60s file)
    
    2 answers
    

  I am having a live stream from an ip camera, where I would like to get only the last 10 seconds of that stream.
  I’ve tried parse the steam continuously into an .mp4, and use ffmpeg -sseof afterwards, but this fails, as the input file is still writing.

  Has anyone an idea, if this is homehow possible ?

  Thanks !

• How do you display things in the rails console for the user in Rails ?

  30 décembre 2014, par Swaathi K

  I am using Streamio-ffmpeg to process files. The gem shows the progress of the transcoding in the console. I want to display this progress to the user. Is there anyway of doing this ?

  This is my helper : (Where the transcoding is done)

  if myfile.filetype == "video"
  
          movie = FFMPEG::Movie.new(oldpath(myfile))
  
          movie.transcode(newpath(myfile),"-deadline realtime -aq 10 -qmax 25") { |progress| puts progress }
  
  
  
          FileUtils.rm_rf(oldpath(myfile))

  The { |progress| puts progress } is responsible for printing the progress to the console. Can I display this in my views instead ?

• 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