1.环境设置

1.1gradio安装

需要安装 gradio，安装办法就是 pip install gradio

2.ffmpeg安装

再次需要加入到path路径。

下载地址： www.gyan.dev/ffmpeg/buil…

ffmpeg.exe
ffprobe.exe
ffmpeg.exe

三者缺一不可，并需要加入path中去。

2.简单小程序

import gradio as gr


def snap(image, video):
    return [image, video]


demo = grjavascript.Interface(
    snap,
    [gr.Image(source="webcam", tool=None), gr.Video(source="webcam")],
    ["image", "video"],
)

if __name__ == "__main__":
    demo.launch(share=True)

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2.1 引入gradio

简单，直接引入import gradio as gr

2.2 定义方法

输入图片、视频
输出图片、视频

2.3 定义接口

接口三个参数：

方法
输入【输入为2个，一个是webcam的image，一个是webcam的video】
输出【image，video】

2.4 运行

运行直接就是接口launch，这个方法。该方法参数较多，常用参数有：

share 是否为接口创建可公开共享的链接。创建一个SSH隧道，使您的UI可以从任何地方访问。如果没有提供，则每次默认设置为False，除非在谷歌Colab中运行。当localhost不可访问(例如谷歌Colab)时，不支持设置share=False。
server_name 要使应用程序在本地网络上可访问，将此设置为“0.0.0.0”。可以通过环境变量GRADIO SERVER NAME设置。如果为None，将使用“127.0.0.1”。显示提示:如果为True，将偶尔显示关于新Gradio功能的提示
server_port 将在此端口上启动gradio应用程序(如果可用)。可以通过环境变量GRADIO服务器端口设置。如果为None，将搜索从7860开始的可用端口。参数较多就不看了。

3.执行情况

3.1 终端日志输出

I:\miniconda3\envs\pytorch\python.exe C:\Users\Administrator\PycharmProjects\pythonProject\webcam.py 
Running on local URL:  http://127.0.0.1:7860
Running on public URL: https://244c15fc39f9f7e0f0.gradio.live

This share link expires in 72 hours. For free permanent hosting and GPU upgrades (NEW!), check out Spaces: https://huggingface.co/spaces
ffmpeg version 2023-03-30-git-4d216654ca-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libXML2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58.  5.100 / 58.  5.100
  libavcodec     60.  7.100 / 60.  7.100
  libavformat    60.  4.101 / 60.  4.101
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  5.100 /  9.  www.devze.com5.100
  libswscale      7.  2.100 /  7.  2.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, matroska,webm, from 'C:\Users\Administrator\AppData\Local\Temp\8cbad405b8474e983e4c02b34a954a697e25b5a5\sample.webm':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0(eng): Video: h264 (Constrained Baseline), yuv420p(progressive), 640x480, SAR 1:1 DAR 4:3, 30.30 fps, 30 tbr, 1k tbn (default)
Stream mapping:
  Stream #0:0 -&gt; #0:0 (h264 (native) -&gt; vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
[libvpx-vp9 @ 00000253d48ee780] v1.13.0-182-g5b05f6f3a
[libvpx-vp9 @ 00000253d48ee780] Neither bitrate nor constrained quality specified, using default CRF of 32
Output #0, webm, to 'C:\Users\Administrator\AppData\Local\Temp\8cbad405b8474e983e4c02b34a954a697e25b5a5\sample_flip.webm':
  Metadata:
    encoder         : Lavf60.4.101
  Stream #0:0(eng): Video: vp9, yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30 fps, 1k tbn (default)
    Metadata:
      encoder         : Lavc60.7.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
[matroska,webm @ 00000253d46a4400] File ended prematurely at pos. 354269 (0x567dd)
frame=  121 fps= 27 q=21.0 Lsize=     105kB time=00:00:04.03 bitrate= 213.1kbits/s speed=0.884x    
video:104kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.271754%
ffmpeg version 2023-03-30-git-4d216654ca-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig -编程客栈-enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libcodec2 --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      58.  5.100 / 58.  5.100
  libavcodec     60.  7.100 / 60.  7.100
  libavformat    60.  4.101 / 60.  4.101
  libavdevice    60.  2.100 / 60.  2.100
  libavfilter     9.  5.100 /  9.  5.100
  libswscale      7.  2.100 /  7.  2.100
  libswresample   4. 11.100 /  4. 11.100
  libpostproc    57.  2.100 / 57.  2.100
Input #0, matroska,webm, from 'C:\Users\Administrator\AppData\Local\Temp\d1d0开发者_Go培训cb0ab1d6909a5688d4f324734e1f908ed912\sample.webm':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0(eng): Video: h264 (Constrained Baseline), yuv420p(progressive), 640x480, SAR 1:1 DAR 4:3, 30.30 fps, 62.50 tbr, 1k tbn (default)
Stream mapping:
  Stream #0:0 -&gt; #0:0 (h264 (native) -&gt; vp9 (libvpx-vp9))
Press [q] to stop, [?] for help
[libvpx-vp9 @ 00000271722bd640] v1.13.0-182-g5b05f6f3a
[libvpx-vp9 @ 00000271722bd640] http://www.devze.comNeither bitrate nor constrained quality specified, using default CRF of 32
Output #0, webm, to 'C:\Users\Administrator\AppData\Local\Temp\d1d0cb0ab1d6909a5688d4f324734e1f908ed9js12\sample_flip.webm':
  Metadata:
    encoder         : Lavf60.4.101
  Stream #0:0(eng): Video: vp9, yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 30 fps, 1k tbn (default)
    Metadata:
      encoder         : Lavc60.7.100 libvpx-vp9
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
[matroska,webm @ 0000027171ce4400] File ended prematurely at pos. 348559 (0x5518f)
frame=  127 fps= 26 q=30.0 Lsize=     228kB time=00:00:04.20 bitrate= 444.9kbits/s speed=0.873x    
video:227kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.601271%
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