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• How to write batch shell script to watermark videos via ffmpeg [closed]

  25 janvier 2021, par Shiv Nandan

  I am using a batch shell script on windows server to watermark videos

  


  for %%a in ("X:\input older\*.mp4") do ffmpeg -i "%%a" -vf "movie=watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]" "X:\output folder\%%~na.mp4"
pause


  


  It converts all videos from input folder to output folder. I want to...

  


  

  1. Change watermark location after every 10 seconds in video for all videos.

  


  2. Water mark size is perfect when video resolution is 19201080 but its different for low resolution video for example : 1280720 its large, and for 640*360 extra large. So I want to keep the water mark size fixed.

  


  


• build : h264 parser depends on full h264 decoder

  19 mars 2014, par Luca Barbato

  build : h264 parser depends on full h264 decoder
  

  • [DH] configure
  • [DH] libavcodec/Makefile

• 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 ?