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• Keep including the full version.h when headers are included externally

  18 mars 2022, par Martin Storsjö

  Keep including the full version.h when headers are included externally
  This avoids unnecessary churn and build breakage for users, by
  
  making sure the whole version.h is included like it has been so far,
  
  while keeping the benefit of not needing to rebuild most files in
  
  the ffmpeg tree on minor/micro bumps.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] doc/APIchanges
  • [DH] libavcodec/avcodec.h
  • [DH] libavdevice/avdevice.h
  • [DH] libavfilter/avfilter.h
  • [DH] libavformat/avformat.h
  • [DH] libpostproc/postprocess.h
  • [DH] libswresample/swresample.h
  • [DH] libswscale/swscale.h

• configure : generate full msvc debug symbols when linking in debug mode

  19 juillet 2013, par Hendrik Leppkes

  configure : generate full msvc debug symbols when linking in debug mode
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure

• FFmpeg with Nvidia GPU - full HW transcode with 50i to 50p deinterlacing

  5 janvier 2018, par Jernej Stopinšek

  I’m trying to do a full hardware transcode of an udp stream to hls
  with 50i to 50p deinterlacing.

  I’m using ffmpeg and Nvidia GPU.

  Since HLS requires deinterlacing

  https://developer.apple.com/library/content/documentation/General/Reference/HLSAuthoringSpec/Requirements.html

  I would like to deinterlace an interlaced source stream and preserve
  as much smooth motion and picture quality as possible.

  My hardware, software and driver info :

  GPU : Tesla P100-PCIE-12GB
  Nvidia Driver Version : 387.26
  Cuda compilation tools, release 9.1, V9.1.85
  FFmpeg from git on 20171218
  
  

  ffmpeg version N-89520-g3f88744067 Copyright (c) 2000-2017 the FFmpeg
  developers built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
  configuration : —enable-gpl
  —enable-cuda-sdk —enable-libx264 —enable-libx265 —enable-nonfree —enable-libnpp —enable-opengl —enable-opencl —enable-libfreetype —enable-openssl —enable-libzvbi —enable-libfontconfig —enable-libfreetype —enable-libfribidi —extra-cflags=-I/usr/local/cuda/include —extra-ldflags=-L/usr/local/cuda/lib64 —arch=x86_64

  libavutil 56. 6.100 / 56. 6.100
  libavcodec 58. 8.100 / 58.
  8.100
  libavformat 58. 3.100 / 58. 3.100
  libavdevice 58. 0.100 / 58. 0.100
  libavfilter 7. 7.100 / 7. 7.100
  libswscale 5.
  0.101 / 5. 0.101
  libswresample 3. 0.101 / 3. 0.101
  libpostproc 55. 0.100 / 55. 0.100

  Input stream info :

  ffmpeg -t 00:05:00 -i udp://xxx.xxx.xxx.xxx:xxxx -map 0:0 -vf idet -c rawvideo -y -f rawvideo /dev/null

  ---

  Input #0, mpegts, from ’udp ://xxx.xxx.xxx.xxx:xxxx’ :
  Duration :
  N/A, start : 49634.159411, bitrate : N/A
  Program xxxxx
  Metadata : service_name :
  service_provider : Stream
  #0:0[0x44d] : Video : h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k
  tbn, 50 tbc
  Stream #0:10x19de : Audio : mp2 ([3][0][0][0] /
  0x0003), 48000 Hz, stereo, s16p, 192 kb/s
  Stream
  #0:20x19e1 : Subtitle : dvb_subtitle ([6][0][0][0] / 0x0006)
  

  Output #0, rawvideo, to ’/dev/null’ :
  Metadata :
  encoder :
  Lavf58.3.100
  Stream #0:0 : Video : rawvideo (I420 / 0x30323449),
  yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 622080 kb/s, 25 fps, 25
  tbn, 25 tbc
  Metadata :
  encoder : Lavc58.8.100 rawvideo
  frame= 7538 fps= 25 q=-0.0 Lsize=22896675kB time=00:05:01.52
  bitrate=622080.0kbits/s dup=38 drop=0 speed=1.02x
  video:22896675kB audio:0kB subtitle:0kB other streams:0kB global
  headers:0kB muxing overhead : 0.000000%
  [Parsed_idet_0 @
  0x56370b3c5080] Repeated Fields : Neither : 7458 Top : 24 Bottom : 18
  [Parsed_idet_0 @ 0x56370b3c5080] Single frame detection : TFF : 281 BFF :
  13 Progressive : 5639 Undetermined : 1567
  [Parsed_idet_0 @
  0x56370b3c5080] Multi frame detection : TFF : 380 BFF : 0 Progressive :
  7120 Undetermined : 0
  

  ---

  This is my command for adaptive hardware deinterlacing. It gives great results with picture, but sound is out of sync.

  ffmpeg -y -err_detect ignore_err -loglevel debug -vsync -1 -hwaccel cuvid -hwaccel_device 1 -c:v h264_cuvid -deint adaptive -r:v 50 -gpu:v 1 -i "udp://xxx.xxx.xxx.xxx:xxxx=?overrun_nonfatal=1&fifo_size=84450&buffer_size=33554432" -map 0:0 -map 0:1 -c:a aac -b:a 196k -c:v h264_nvenc -flags -global_header+cgop -gpu:v 1 -g:v 50 -bf:v 4 -coder:v cabac -b_adapt:v false -b:v 5184000 -minrate:v 5184000 -maxrate:v 5184000 -bufsize:v 2488320 -rc:v cbr_hq -2pass:v true -rc-lookahead:v 25 -no-scenecut:v 1 -profile:v high -preset:v slow -color_range:v 1 -color_trc:v 1 -color_primaries:v 1 -colorspace:v 1 -f hls -hls_time 5 -hls_list_size 3 -start_number 0 -hls_flags delete_segments /srv/hls/program_01/1080p/index.m3u8

  If I add option "-drop_second_field 1" to h264_cuvid and remove -r:v 50 from input and put it to h264_nvenc - then transcoded stream has synced audio, but I think I’m losing quality due to drop_second_field option.

  ffmpeg -y -err_detect ignore_err -loglevel debug -vsync -1 -hwaccel cuvid -hwaccel_device 1 -c:v h264_cuvid -deint adaptive -drop_second_field 1 -gpu:v 1 -i "udp://xxx.xxx.xxx.xxx:xxxx=?overrun_nonfatal=1&fifo_size=84450&buffer_size=33554432" -map 0:0 -map 0:1 -c:a aac -b:a 196k -c:v h264_nvenc -flags -global_header+cgop -gpu:v 1 -g:v 50 -r:v 50 -bf:v 4 -coder:v cabac -b_adapt:v false -b:v 5184000 -minrate:v 5184000 -maxrate:v 5184000 -bufsize:v 2488320 -rc:v cbr_hq -2pass:v true -rc-lookahead:v 25 -no-scenecut:v 1 -profile:v high -preset:v slow -color_range:v 1 -color_trc:v 1 -color_primaries:v 1 -colorspace:v 1 -f hls -hls_time 5 -hls_list_size 3 -start_number 0 -hls_flags delete_segments /srv/hls/program_01/1080p/index.m3u8

  Could someone please point me in the right direction how to properly deinterlace with cuvid and minimal possible loss of quality ?