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• Revision 81ad047ee5 : VP8 for ARMv8 by using NEON intrinsics 06 Add idct_dequant_full_2x_neon.c - idc

  17 décembre 2013, par James Yu

  Changed Paths :
   Delete /vp8/common/arm/neon/idct_dequant_full_2x_neon.asm

  
   Add /vp8/common/arm/neon/idct_dequant_full_2x_neon.c

  
   Modify /vp8/vp8_common.mk

  
  
  VP8 for ARMv8 by using NEON intrinsics 06

  Add idct_dequant_full_2x_neon.c
   idct_dequant_full_2x_neon

  ==== Summary of apply VP8 decode patch series ====
  Benchmark on Samsung Chromebook, Cortex-A15, 1.7GHz, Dual core
  Toolchain : linaro-1.13.1-4.8-2014.01
  Compile argument : CROSS=arm-linux-gnueabihf- ../libvpx/configure
  —target=armv7-linux-gcc —prefix=$HOME/out
  —enable-shared —cpu=cortex-a7
  Test argument : vpxdec —summary —noblit ./tears_of_steel_1080p.webm

  NEON assembly 46.68 (fps)
  Apply patch 06 46.65, -0.03
  Apply patch 07 46.86, +0.21
  Apply patch 08 46.58, -0.28
  Apply patch 09 46.57, -0.01
  Apply patch 10 46.51, -0.06
  Apply patch 11 46.13, -0.38
  Apply patch 12 45.42, -0.71
  Apply patch 13 46.06, +0.64
  Apply patch 14 45.19, -0.87
  Apply patch 15 45.93, +0.74
  Apply patch 16 45.48, -0.45
  Apply patch 17 45.84, +0.36
  Apply patch 18 45.91, +0.07 <= With all NEON intrinsics patches
  Total -0.77 fps, 1.65% performance regression

  Change-Id : I77bfc9eaccfb97b8d401e949ceff8795e26ca6b7
  Signed-off-by : James Yu <james.yu@linaro.org>

• Creating an ffmpeg html/php form process and need ffmpeg technical feedback

  7 juin 2016, par dave

  I have decided to create an input form for ffmpeg to go with my video uploader.

  This is for my video uploader plugin for a social site software. Users have told me that they want technical options for videos so they can choose the specific options they want including thumbnail options.

  I have been reading the ffmpeg docs most of the morning as well as watching some videos and i have come up with a rough draft of my form. The videos uploaded will more than likely be non gaming, personal and hobby videos.

  The goal here is to have a form that is easy enough for the non technical user, but technical for those that want the options. So i do plan to have a checkbox which allows the non technical user to skip the technical settings. This will result in a generic ffmpeg command with default settings. If they choose to use the technical specs then it will create a more specific ffmpeg command stream.

  here is what i have so far in the draft.

  select max size options ’50MB’,’100MB’,’200MB’,’500MB’,’650MB’,’750MB’,’1GB’,’2GB’,’3GB’

  input for thumbcapture in seconds maxlength 2 size 2

  input for video in ’mpg’,’wma’,’mov’,’flv’,’mp4’,’avi’,’qt’,’wmv’,’rm’

  option for video size ’200x100’,’320x240’,’560x315’,’640x360’,’853x480’,’1280x720’ not sure if i want to offer a custom slot or not.

  my thought here is that if they do not want the tech version of the form then the codecs will be b:v copy b:a copy (if that is the smart way to do it) or just left out and let ffmpeg decide what is best.

  ===== this is the technical part of the form =======

  select for acodec options copy, mp3, mp1, mp2, dnet, 28_8, wmav2, alac, cook

  select for vcodec option copy, ffv1, ms-cram, mpeg-4, rv40, wmv, xvid, mov, qt, avchd

  select for bitrate audio 32k, 64k, 128k

  select for bitrate video 1000k, 1200k, 1500k

  select for sampling rate 22050, 44100

  input for crf(mp4 out only) size 2 maxlength 2 minval 2 maxval 49

  input for avi quantanizer (avi out only) size 2 maxlength 2 minval 2 maxval 49

  ===== end technical form =====================

  select for video out ’avi’,’mp4’,’flv’

  that is what i have so far. How does that combination on the technical side look to you ffmpeg pros ?

  Any suggestions ? :)

• tests : drop -d option from ffserver invocation

  30 novembre 2016, par Andreas Cadhalpun

  tests : drop -d option from ffserver invocation
  It randomly causes failures with an error like :
  
  "Failed to set value ’-f’ for option ’d’ : Error number -920332800 occurred"
  (The error number is different every time.)
  Reviewed-by : Reynaldo H. Verdejo Pinochet <reynaldo@osg.samsung.com>
  
  Signed-off-by : Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
  

  • [DH] tests/ffserver-regression.sh