1. 23 Aug, 2019 4 commits
  2. 14 Aug, 2019 6 commits
    • Marton Balint's avatar
      avformat/mpegtsenc: remove deprecated resend_headers option · 59744637
      Marton Balint authored
      Deprecated since 2014.
      Signed-off-by: 's avatarMarton Balint <cus@passwd.hu>
      59744637
    • Marton Balint's avatar
      avformat/mpegtsenc: fix PCR generation intervals · 88ac76be
      Marton Balint authored
      PCR generation was based on counting packets for both CBR and VBR streams.
      Couting packets might have worked for CBR streams (when muxrate was specified)
      but it only took into account the packets of a service (or the packets of the
      PCR stream lately), so even that was problematic for multi program streams.
      
      The new code works on actual timestamps for both CBR and VBR streams. For VBR
      streams the behaviour of the old code is simulated by selecting a PCR interval
      which is the highest multiple of the frame duration but still less than 100 ms.
      
      It should be trivial to add support for setting the PCR interval for VBR
      streams as well in a later patch.
      
      The accuracy of PCR packets for CBR streams was greatly improved by preemtively
      sending them at PCR intervals even if sending the payload of another stream
      is in progress.
      
      This may fix these tickets:
      - #5750
      - #7524
      Signed-off-by: 's avatarMarton Balint <cus@passwd.hu>
      88ac76be
    • Marton Balint's avatar
      avformat/mpegtsenc: use increasing numbers in default service names · a4d984ad
      Marton Balint authored
      Maybe we should use service ID instead of increasing numbers?
      Signed-off-by: 's avatarMarton Balint <cus@passwd.hu>
      a4d984ad
    • Marton Balint's avatar
    • Marton Balint's avatar
      47ea654b
    • Marton Balint's avatar
      avformat/mpegtsenc: fix incorrect PCR selection with multiple programs · d770e0f4
      Marton Balint authored
      The MPEG-TS muxer had a serious bug related to the use of multiple programs:
      in that case, the PCR pid selection was incomplete for all services except one.
      This patch solves this problem and selects a stream to become PCR for each
      service, preferably the video stream.
      
      This patch also moves pcr calculation attributes to MpegTSWriteStream from
      MpegTSService. PCR is a per-stream and not per-service thing, so it was
      misleading to refer to it as something that is per-service.
      
      Also remove *service from MpegTSWriteStream because a stream can belong to
      multiple services so it was misleading to select one for each stream.
      
      You can check the result with this example command:
      
      ./ffmpeg -loglevel verbose -y -f lavfi -i \
        "testsrc=s=64x64:d=10,split=2[out0][tmp1];[tmp1]vflip[out1];sine=d=10,asetnsamples=1152[out2]" \
        -flags +bitexact -fflags +bitexact -sws_flags +accurate_rnd+bitexact  \
        -codec:v libx264 -codec:a mp2 -pix_fmt yuv420p \
        -map '0:v:0' \
        -map '0:v:1' \
        -map '0:a:0'  \
        -program st=0:st=2 -program st=1:st=2 -program st=2 -program st=0 -f mpegts out.ts
      
      You should now see this:
      
      [mpegts @ 0x37505c0] service 1 using PCR in pid=256
      [mpegts @ 0x37505c0] service 2 using PCR in pid=257
      [mpegts @ 0x37505c0] service 3 using PCR in pid=258
      [mpegts @ 0x37505c0] service 4 using PCR in pid=256
      
      Fixes ticket #8039.
      
      v2: a video is stream is preferred if there are no programs, just like before
      the patch.
      Signed-off-by: 's avatarMarton Balint <cus@passwd.hu>
      d770e0f4
  3. 01 Mar, 2019 2 commits
  4. 21 Feb, 2019 1 commit
  5. 08 Dec, 2018 1 commit
  6. 12 May, 2018 1 commit
  7. 28 Jan, 2018 1 commit
  8. 07 Jul, 2017 1 commit
  9. 29 Mar, 2017 1 commit
  10. 16 Mar, 2017 1 commit
  11. 17 Jan, 2017 1 commit
  12. 06 Nov, 2016 2 commits
  13. 02 Nov, 2016 1 commit
  14. 28 Oct, 2016 1 commit
  15. 04 Oct, 2016 1 commit
  16. 28 Sep, 2016 1 commit
  17. 29 Jul, 2016 1 commit
  18. 19 May, 2016 1 commit
  19. 17 May, 2016 1 commit
  20. 04 May, 2016 2 commits
  21. 03 May, 2016 2 commits
  22. 24 Mar, 2016 2 commits
  23. 23 Feb, 2016 2 commits
    • Stefano Sabatini's avatar
      lavc/lavf: transmit stream_id information for mpegts KLV data packets · 14f7a3d5
      Stefano Sabatini authored
      This allows to copy information related to the stream ID from the demuxer
      to the muxer, thus allowing for example to retain information related to
      synchronous and asynchronous KLV data packets. This information is used
      in the muxer when remuxing to distinguish the two kind of packets (if the
      information is lacking, data packets are considered synchronous).
      
      The fate reference changes are due to the use of
      av_packet_merge_side_data(), which increases the size of the output
      packet size, since side data is merged into the packet data.
      14f7a3d5
    • Anton Khirnov's avatar
      lavf: replace AVStream.codec with AVStream.codecpar · 9200514a
      Anton Khirnov authored
      Currently, AVStream contains an embedded AVCodecContext instance, which
      is used by demuxers to export stream parameters to the caller and by
      muxers to receive stream parameters from the caller. It is also used
      internally as the codec context that is passed to parsers.
      
      In addition, it is also widely used by the callers as the decoding (when
      demuxer) or encoding (when muxing) context, though this has been
      officially discouraged since Libav 11.
      
      There are multiple important problems with this approach:
          - the fields in AVCodecContext are in general one of
              * stream parameters
              * codec options
              * codec state
            However, it's not clear which ones are which. It is consequently
            unclear which fields are a demuxer allowed to set or a muxer allowed to
            read. This leads to erratic behaviour depending on whether decoding or
            encoding is being performed or not (and whether it uses the AVStream
            embedded codec context).
          - various synchronization issues arising from the fact that the same
            context is used by several different APIs (muxers/demuxers,
            parsers, bitstream filters and encoders/decoders) simultaneously, with
            there being no clear rules for who can modify what and the different
            processes being typically delayed with respect to each other.
          - avformat_find_stream_info() making it necessary to support opening
            and closing a single codec context multiple times, thus
            complicating the semantics of freeing various allocated objects in the
            codec context.
      
      Those problems are resolved by replacing the AVStream embedded codec
      context with a newly added AVCodecParameters instance, which stores only
      the stream parameters exported by the demuxers or read by the muxers.
      9200514a
  24. 29 Jan, 2016 1 commit
  25. 25 Jan, 2016 1 commit
  26. 28 Dec, 2015 1 commit