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• How can I prettify my compiled binary of FFmpeg ?

  2 avril 2019, par Hashim

  After many weeks and a lot of effort, I finally managed to use a Cygwin and MinGW-w64 toolchain to cross-compile a working binary of FFmpeg for Windows, complete with the superior but elusive fdk_aac encoder.

  However, comparing my newly-compiled binary with the official pre-compiled build for Windows makes me feel a little... lacking (first run is the Zeranoe build, second is my own) :

  

  Notice how the Zeranoe build’s banner is missing all of the unseemly-looking configure options apart from the external libraries. Along with that, it also has the date that the program was built on inserted right after the GCC version.

  How were the compilers of this build able to add these enhancements to their binary, and how can I do the same ? I’m assuming these are simply GCC or preprocessor options that I can’t find any information on, or maybe there’s more to it than that.

  N.B : I’m aware of the --no-banner switch for FFmpeg, and that’s not what I’m trying to do here.

• Can't decode HEVC video with DXVA2 and ffmpeg

  10 mai 2018, par Igor

  I can’t use DXVA2 hardware acceleration for decoding of HEVC video with ffmpeg. DXVA2 for H.264 works fine.

  I compiled an official example hw_decode.c from ffmpeg sources :

  https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/hw_decode.c

  When I call av_send_packet() it performs a callback assigned in AVCodecContext->get_format and returns only AV_PIX_FMT_YUV420P for HEVC video instead of AV_PIX_FMT_DXVA2_VLD for all H.264 videos. So HW decoding doesn’t work.

  Software decoding of HEVC works without problems.

  MPC-HC plays fine HEVC video with DXVA2 (CPU loading is low and Task Manager shows work of Video decoder in GPU details). My video card is Geforce 1060.

• is there any functional build of ffmpeg to android

  11 mai 2018, par Rafael Lima

  I’ve searching the last 3 days for a usable API for android access ffmpeg.
  Since FFMpeg group doesn’t release an official lib for android I found several paralel projects trying to build it.

  So it brings me to my nightmare that is called compile.

  i’ve followed all these tutorials : https://trac.ffmpeg.org/wiki/CompilationGuide/Android

  And others found in different places. but none of them build

  NONE OF THEM IS LESS THAN 3 YEARS OLD

  Sorry for the caps, but it is frustrating... no ffmpeg build projects I found deal with nkd above 14 and google doesn’t keep in archive nkds older than that, so even if i agree with get all outdated libraries source i cant reproduce de compiler i cant download the same ndk...

  The only api i manage to download with a functional build of ffmpeg probably was compiled without some codecs, because on my tests i can only handle few types of videos

  ===============================================================

  The question is, does anyone know an actual, stable, project for building ffmpeg to android ?

  I’m even willing to pay in order to get a working version of it