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• lavc/hevcdec : simplify output logic

  21 juin 2024, par Anton Khirnov

  lavc/hevcdec : simplify output logic
  Current code is written around the "simple" decode API's limitation that
  
  a single input packet (AU/coded frame) triggers the output of at most
  
  one output frame. However the spec contains two cases where a coded
  
  frame may cause multiple frames to be output (cf. C.5.2.2.2) :
  
  * start of a new sequence
  
  * overflowing sps_max_dec_pic_buffering
  The decoder currently contains rather convoluted logic to handle these
  
  cases :
  
  * decode/output/per-frame sequence counters,
  
  * HEVC_FRAME_FLAG_BUMPING
  
  * ff_hevc_bump_frame()
  
  * special clauses in ff_hevc_output_frame()
  However, with the receive_frame() API none of that is necessary, as we
  
  can just output multiple frames at once. Previously added ContainerFifo
  
  allows that to be done in a straightforward and efficient manner.
  

  • [DH] libavcodec/hevc/hevcdec.c
  • [DH] libavcodec/hevc/hevcdec.h
  • [DH] libavcodec/hevc/refs.c

• Annual Release of External-Videos plugin – we’ve hit v1.0

  13 janvier 2017, par silvia

  This is the annual release of my external-videos wordpress plugin and with the help of Andrew Nimmolo I’m proud to annouce we’ve reached version 1.0 !

  So yes, my external-videos wordpress plugin is now roughly 7 years old, who would have thought ! During the year, I don’t get the luxury of spending time on maintaining this open source love child of mine, but at Christmas, my bad conscience catches up with me – every year ! I then spend some time going through bug reports, upgrading the plugin to the latest wordpress version, upgrading to the latest video site APIs, testing functionality and of course making a new release.

  This year has been quite special. The power of open source has kicked in and a new developer took an interest in external-videos. Andrew Nimmolo submitted patches over all of 2016. He decided to bring the external-videos plugin into the new decade with a huge update to the layout of the settings pages, general improvements, and an all-round update of all the video site APIs which included removing their overly complex SDKs and going straight for the REST APIs.

  Therefore, I’m very proud to be able to release version 1.0 today. Thanks, Andrew !

  Enjoy – and I look forward to many more contributions – have a Happy 2017 !

  —

  NOTE : If you’re upgrading from an older version, you might need to remove and re-add your social video sites because the API details have changed a bit. Also, we noticed that there were layout issues on WordPress 4.3.7, so try and make sure your WordPress version is up to date.

• fftools/ffmpeg_dec : apply cropping manually

  22 mars 2024, par Anton Khirnov

  fftools/ffmpeg_dec : apply cropping manually
  lavfi does not require aligned buffers, so we can safely apply top/left
  
  cropping by any amount, without passing any special flags to lavc.
  
  Longer term, an even better solution would probably be auto-inserting
  
  the crop filter (or its hwaccel versions) as needed.
  Multiple FATE tests no longer need -flags unaligned.
  

  • [DH] fftools/ffmpeg_dec.c
  • [DH] tests/fate/h264.mak
  • [DH] tests/fate/hevc.mak
  • [DH] tests/fate/vvc.mak