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• Error in building opencv with ffmpeg

  15 avril 2020, par batuman

  I installed ffmpeg according to this article. ffmpeg installation was ok.
Now I build opencv with ffmpeg support and I have some errors.
The errors are

  



  /home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp:1484:21: error: ‘CODEC_FLAG_GLOBAL_HEADER’ was not declared in this scope
         c->flags |= CODEC_FLAG_GLOBAL_HEADER;
                     ^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In function ‘int icv_av_write_frame_FFMPEG(AVFormatContext*, AVStream*, uint8_t*, uint32_t, AVFrame*)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp:1512:30: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
     if (oc->oformat->flags & AVFMT_RAWPICTURE) {
                              ^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In member function ‘void CvVideoWriter_FFMPEG::close()’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp:1686:35: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
         if( (oc->oformat->flags & AVFMT_RAWPICTURE) == 0 )
                                   ^
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In member function ‘bool CvVideoWriter_FFMPEG::open(const char*, int, double, int, int, bool)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp:1920:32: error: ‘AVFMT_RAWPICTURE’ was not declared in this scope
     if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
                                ^
In file included from /home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg.cpp:45:0:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp: In static member function ‘static AVStream* OutputMediaStream_FFMPEG::addVideoStream(AVFormatContext*, AVCodecID, int, int, int, double, AVPixelFormat)’:
/home/coie/Softwares/Libraries/opencv-2.4.13.3/modules/highgui/src/cap_ffmpeg_impl.hpp:2214:25: error: ‘CODEC_FLAG_GLOBAL_HEADER’ was not declared in this scope
             c->flags |= CODEC_FLAG_GLOBAL_HEADER;
                         ^
modules/highgui/CMakeFiles/opencv_highgui.dir/build.make:230: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o' failed
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/cap_ffmpeg.cpp.o] Error 1
CMakeFiles/Makefile2:2349: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/all' failed


  



  What could be wrong ?

  


• Bash Shell Script Remote Background Processing

  22 mai 2015, par user281738

  I Have Created a Bash Shell script.. With that i can crop and convert video locally..

  nohup ffmpeg -i "$c1" -vf "$crop_value1" -b 1800k "/home/Cropped/""$name1"_cropped.mp4"" > crop1.txt &
  
  PID1=$!
  
  nohup ffmpeg -i "$c2" -vf "$crop_value2" -b 1800k "/home/Cropped/""$name2"_cropped.mp4"" > crop2.txt &
  
  PID2=$!
  
  nohup ffmpeg -i "$c3" -vf "$crop_value3" -b 1800k "/home/Cropped/""$name3"_cropped.mp4"" > crop3.txt &
  
  PID3=$!
  
  nohup ffmpeg -i "$c4" -vf "$crop_value4" -b 1800k "/home/Cropped/""$name4"_cropped.mp4"" > crop4.txt &
  
  PID4=$!
  
  wait $PID1
  
  wait $PID2
  
  wait $PID3
  
  wait $PID4

  As Above Code Shows Im Using 4 Conversion In background In Local Server And I’m Using Wait PID To Check Whether Conversation Finished Or Not.

  My Problem Is Its taking very late to Convert.. So I Thinking Of Converting One Conversion In Local Sever And Another Three In Different Remote Server Through SSH
  Example :

  ssh user@192.168.1.1 "nohup ffmpeg -i "$c1" -vf "$crop_value1" -b 1800k "/home/Cropped/""$name1"_cropped.mp4"" > crop1.txt &"

  My Problem Is After Executing Remote Commands How Can I Get Remote PID And Use PID Wait Option For All Remote Connection.

• ffmpeg fails to read header of audio while creating video at 1080p@24fps

  15 juillet 2016, par asad

  I am trying to create video by merging rawvideo frames from opengl, .m4a audio file and .png image(logo). With videos of small duration (2-3 min) at 108p@24fps, following code works fine. But if the video is larger (10 min), code fails. FFmpeg gives following error log :

  ffmpeg version N-80097-g89e9393 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
  
    configuration: --prefix=/home/ec2-user/ffmpeg_build --extra-cflags=-I/home/ec2-user/ffmpeg_build/include --extra-ldflags=-L/home/ec2-user/ffmpeg_build/lib --bindir=/home/ec2-user/bin --pkg-config-flags=--static --enable-gpl --enable-nonfree --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 43.100 / 57. 43.100
  
    libavformat    57. 37.100 / 57. 37.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 46.100 /  6. 46.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, rawvideo, from 'pipe:0':
  
    Duration: N/A, start: 0.000000, bitrate: 314818 kb/s
  
      Stream #0:0: Video: rawvideo (BGRA / 0x41524742), bgra, 854x480, 314818 kb/s, 24 tbr, 24 tbn
  
  Input #1, png_pipe, from '/home/ec2-user/logo-watermark-green_tpd.png':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Video: png, rgba(pc), 287x185, 25 tbr, 25 tbn
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x3b71d00] error reading header
  
  /home/ec2-user/decryptedData/audios/Blrt_Decrypt_tfss-29882287-c1d5-4c54-b674-87e9de4a9e38-audio.m4a: Invalid data found when processing input
  
  "rjRoYZaDA1_854x480@24fps_1468547071.txt"

  Code i am using is following :

  /home/ec2-user/bin/ffmpeg \
  
  -framerate 24 -f rawvideo -pixel_format rgb32 -video_size 854x480 -i pipe:0 \
  
  -i /home/ec2-user/logo-watermark-green_tpd.png \
  
  -i /home/ec2-user/decryptedData/audios/Blrt_Decrypt_tfss-29882287-c1d5-4c54-b674-87e9de4a9e38-audio.m4a \
  
  -filter_complex "[0:v]vflip[main];[1:v]scale=854/10:-1[si], \
  
  [main][si]overlay=main_w-overlay_w:main_h-overlay_h:format=rgb,format=yuv420p" \
  
  -c:v libx264 \
  
  -c:a copy /home/ec2-user/videos/rjRoYZaDA1_854x480@24fps_1468563244030.mp4 \
  
  2> /home/ec2-user/logs/rjRoYZaDA1_854x480@24fps_1468563244.txt

  Is it related to any memory ?