将GPU版本的FFMPEG编译成OpenCV

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问题描述

当我尝试使用 GPU 时使用如下命令在 opencv 上运行 FFMPEG:

When I try to use GPUFFMPEG on opencv by using a command like:

VideoCapture cap("rtsp link");

for(;;)
{
mat frame;
cap>>frame;
}

尽管编译了 FFMPEG 的 GPU 版本，但我在 nvidia-smi 上没有看到任何输出.

I don't see any output on nvidia-smi despite compiling the GPU version of FFMPEG.

我试图让 FFMPEG 使用 GPU 来提高我的程序速度.我通过克隆 this 获得了 FFMPEG 并按照步骤此处使其正常工作.

I am trying to get FFMPEG to use GPU to improve the speed of my program. I got FFMPEG from cloning this and followed the steps here to get it working.

我已经使用 nvidia-smi dmon -i 0 验证了结果，并且看到当我运行命令 ffmpeg -c:v 时 dec% 增加h264_cuvid -i test_video.mp4 test_output.mkv.

I have validated the results using nvidia-smi dmon -i 0 and have seen that dec% increases when I run the command ffmpeg -c:v h264_cuvid -i test_video.mp4 test_output.mkv.

然后我编译 Opencv 以使用支持 GPU 的 FFMPEG，我通过从 opencv 运行 getBuildInformation 来检查:

I then compiled Opencv to use the GPU enabled FFMPEG, I check this by running getBuildInformation from opencv:

Video I/O:
DC1394 1.x: NO
DC1394 2.x: YES (ver 2.2.4)
FFMPEG: YES
codec: YES (ver 58.20.103)
format: YES (ver 58.17.100)
util: YES (ver 56.18.102)
swscale: YES (ver 5.2.100)
resample: NO
gentoo-style: YES
GStreamer: NO
OpenNI: NO
OpenNI PrimeSensor Modules: NO
OpenNI2: NO
PvAPI: NO
GigEVisionSDK: NO
UniCap: NO
UniCap ucil: NO
V4L/V4L2: NO/YES
XIMEA: NO
Xine: NO
gPhoto2: NO

我交叉验证我使用的是相同的 ffmpeg(通过检查版本号):

I cross-verify that I'm using the same ffmpeg (by checking the version numbers):

ffmpeg version N-91273-g67747c8 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609
  configuration: --enable-cuda --enable-cuvid --enable-nvenc --enable-nonfree --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64
  libavutil      56. 18.102 / 56. 18.102
  libavcodec     58. 20.101 / 58. 20.101
  libavformat    58. 17.100 / 58. 17.100
  libavdevice    58.  4.101 / 58.  4.101
  libavfilter     7. 25.100 /  7. 25.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100

请告诉我应该如何编译 OpenCV 以使用 FFMPEG 的 GPU 版本.谢谢！

Please advise me on how I should compile OpenCV to use the GPU version of FFMPEG. Thank you!

将GPU版本的FFMPEG编译成OpenCV

问题描述

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