[linux][uvc]YUV格式编码的图片

YUV格式编码的图片,在Linux下需要安装ffmpeg。

#安装ffmpeg
$sudo apt install ffmpeg

#查看图片，需要注意的是YUV图像的信息中并没有存储宽和高，所以在打开时需要指定图像的宽和高。
$ ffplay [-f rawvideo] -video_size WidthxHeight dest.yuv
# eg:   ffplay -f rawvideo -video_size 640x480 image.yuv
# eg:   ffplay -f rawvideo -video_size 640x480 -pixel_format yuyv422 image-1.yuv

show yuv image

$ ffplay -f rawvideo -video_size 640x480 -pixel_format yuyv422 image-1.yuv 
ffplay version 3.4.11-0ubuntu0.1 Copyright (c) 2003-2022 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[rawvideo @ 0x7f7f0c000b80] Estimating duration from bitrate, this may be inaccurate
Input #0, rawvideo, from 'image-1.yuv':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 122880 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 122880 kb/s, 25 tbr, 25 tbn, 25 tbc

#将图像转化为YUV格式
$ffmpeg -i src.xxx -s WxH [-pix_fmt yuv420p] dest.yuv