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• avcodec/mips : MSA (MIPS-SIMD-Arch) optimizations for HEVC horizontal and vertical...

  17 avril 2015, par Shivraj Patil

  avcodec/mips : MSA (MIPS-SIMD-Arch) optimizations for HEVC horizontal and vertical mc functions
  Signed-off-by : Shivraj Patil <shivraj.patil@imgtec.com>
  
  Reviewed-by : Nedeljko Babic <Nedeljko.Babic@imgtec.com>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/hevcdsp.c
  • [DH] libavcodec/hevcdsp.h
  • [DH] libavcodec/mips/Makefile
  • [DH] libavcodec/mips/hevcdsp_init_mips.c
  • [DH] libavcodec/mips/hevcdsp_mips.h
  • [DH] libavcodec/mips/hevcdsp_msa.c
  • [DH] libavutil/mips/generic_macros_msa.h

• Revision 571fdbb05f : dpcm intra prediction for tx_skip Implements vertical, horizontal, and tm dpcm

  17 décembre 2014, par punksu

  Changed Paths :
   Modify /vp9/common/vp9_idct.c

  
   Modify /vp9/common/vp9_idct.h

  
   Modify /vp9/decoder/vp9_decodeframe.c

  
   Modify /vp9/decoder/vp9_decodemv.c

  
   Modify /vp9/encoder/vp9_bitstream.c

  
   Modify /vp9/encoder/vp9_dct.c

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encodemb.c

  
   Modify /vp9/encoder/vp9_encodemb.h

  
   Modify /vp9/encoder/vp9_quantize.c

  
   Modify /vp9/encoder/vp9_quantize.h

  
  
  dpcm intra prediction for tx_skip

  Implements vertical, horizontal, and tm dpcm intra prediction for
  blocks in tx_skip mode. Typical coding gain on screen content video
  is 2% 5%.

  Change-Id : Idd5bd84ac59daa586ec0cd724680cef695981651

• ffmpeg rotate and trim video 4k horizontal -> 2k vertical

  19 juillet 2015, par Flash Thunder

  I was looking for solution, but seems that the ones that google finds are not valid anymore... I think that you have to use mapping for that, but not sure how...

  I need to rotate horizontal 4K video and trim it (leaving center part), so the output would be vertical 1080p. Could anybody give me a hand with that ?

  Of course I need to keep the best possible quality.

  PS. ffmpeg compiled from git-8250943 (2015-07-17)