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• FFmpeg "Could not open file" error message when processing with PHP

  22 juin 2022, par FlyingCat

  I am using ffmpeg to get the image from several video files. I got my ffmpeg codes ready but I got the following error when I exec my codes.

  



  ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
built on Apr  2 2013 17:02:36 with gcc 4.6.3

*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
//files info...
//files info...
Incompatible pixel format 'yuv420p' for codec 'mjpeg', auto-selecting format 'yuvj420p'
//file info...
[buffer @ 0x1513c40] Buffering several frames is not supported. Please consume all available frames before adding a new one.
 Last message repeated 75 times
[image2 @ 0x1513460] Could not open file : /test/project
av_interleaved_write_frame(): Input/output error


  



  I only show the error messages that have color highlighted. 
My code :

  



   $ffmpeg ="/usr/bin/ffmpeg";

 $image_source_path = '/test/project/test.mp4';
 $ALL_PLACE_WIDTH = 300;
 $ALL_PLACE_HEIGHT = 300;

 $image_cmd = " -r 1 -ss 00:00:10 -t 00:00:01 -s ".$ALL_PLACE_WIDTH."x".$ALL_PLACE_HEIGHT."   -f image2 " ;

 $dest_image_path = '/test/project';

 $str_command= $ffmpeg  ." -i " . $image_source_path . $image_cmd .$dest_image_path;
 shell_exec($str_command);


  



  It seems my Linux wants to me to switch to avconv. I am not sure how to fix these errors. Can someone give me a hint about it ?

  


• avfilter/vf_extractplanes : switch to activate()

  7 mars 2022, par Paul B Mahol

  avfilter/vf_extractplanes : switch to activate()
  Fixes hang at end of input with this command :
  ffmpeg -f lavfi -i testsrc2=d=50,format=yuv444p -lavfi \
  
  "extractplanes=y+u+v[y][u][v] ;[y]tpad=start=0[y] ;[u]tpad=start=0[u] ;[v]negate[v] ;[y][u][v]vstack=3" -f null -
  

  • [DH] libavfilter/vf_extractplanes.c

• avfilter : add overlay vaapi filter

  22 novembre 2021, par Xinpeng Sun

  avfilter : add overlay vaapi filter
  Overlay one video on the top of another.
  It takes two inputs and has one output. The first input is the "main" video on
  
  which the second input is overlaid. This filter requires same memory layout for
  
  all the inputs.
  An example command to use this filter to overlay overlay.mp4 at the top-left
  
  corner of the main.mp4 :
  ffmpeg -init_hw_device vaapi=foo :/dev/dri/renderD128 \
  
   hwaccel vaapi -hwaccel_device foo -hwaccel_output_format vaapi -c:v h264 -i main.mp4 \
  
   hwaccel vaapi -hwaccel_device foo -hwaccel_output_format vaapi -c:v h264 -i overlay.mp4 \
  
   filter_complex "[0:v][1:v]overlay_vaapi=0:0:100:100:0.5[t1]" \
  
   map "[t1]" -an -c:v h264_vaapi -y out_vaapi.mp4
  Signed-off-by : U. Artie Eoff <ullysses.a.eoff@intel.com>
  
  Signed-off-by : Xinpeng Sun <xinpeng.sun@intel.com>
  
  Signed-off-by : Zachary Zhou <zachary.zhou@intel.com>
  
  Signed-off-by : Fei Wang <fei.w.wang@intel.com>
  
  Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
  

  • [DH] configure
  • [DH] doc/filters.texi
  • [DH] libavfilter/Makefile
  • [DH] libavfilter/allfilters.c
  • [DH] libavfilter/version.h
  • [DH] libavfilter/vf_overlay_vaapi.c