Python修改图片分辨率（附代码）

2024-05-26 21:59| 来源: 网络整理| 查看: 265

前言

环境依赖

代码

总结

前言

本文提供将图片分辨率调整的python代码，一如既往的实用主义。

环境依赖

ffmpeg环境安装，可以参考我的另一篇文章：windows ffmpeg安装部署_阿良的博客-CSDN博客

ffmpy安装：

pip install ffmpy -i https://pypi.douban.com/simple

代码

不废话，上代码。

#!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 2021/12/11 21:43 # @Author : 剑客阿良_ALiang # @Site : # @File : image_tool.py import os import uuid from ffmpy import FFmpeg # 调整图片大小 def change_size(image_path: str, output_dir: str, width: int, height: int): ext = os.path.basename(image_path).strip().split('.')[-1] if ext not in ['png', 'jpg']: raise Exception('format error') _result_path = os.path.join( output_dir, '{}.{}'.format( uuid.uuid1().hex, ext)) ff = FFmpeg(inputs={'{}'.format(image_path): None}, outputs={ _result_path: '-vf scale={}:{}'.format(width, height)}) print(ff.cmd) ff.run() return _result_path

代码说明：

1、change_size方法入参分别为：图片地址、输出目录地址、需要修改的宽、需要修改的高。

2、验证的图片格式只有png、jpg，如需添加自行添加。

3、为了避免输出文件文件名重复，使用uuid作为文件名。

验证一下：

准备的图片如下：

执行代码：

if __name__ == '__main__': print(change_size('data/1234.jpg', 'data/', 1280, 720))

执行结果：

E:\ProgramData\Anaconda3\envs\pytorch\python.exe C:/Users/yi/PycharmProjects/test/image_tool.py ffmpeg -i data/123.jpg -vf scale=1280:720 data/709ad7cc5a8a11ec82c82c4d54eea02b.jpg ffmpeg version n4.3.1-20-g8a2acdc6da Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9.3-win32 (GCC) 20200320 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --enable-iconv --enable-zlib --enable-libxml2 --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvmaf --disable-vulkan --enable-libvorbis --enable-amf --enable-libaom --enable-avisynth --enable-libdav1d --enable-ffnvcodec --enable-cuda-llvm --disable-libglslang --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvpx --enable-libwebp --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librav1e --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libtwolame --enable-libvidstab --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-libs=-lgomp libavutil 56. 51.100 / 56. 51.100 libavcodec 58. 91.100 / 58. 91.100 libavformat 58. 45.100 / 58. 45.100 libavdevice 58. 10.100 / 58. 10.100 libavfilter 7. 85.100 / 7. 85.100 libswscale 5. 7.100 / 5. 7.100 libswresample 3. 7.100 / 3. 7.100 libpostproc 55. 7.100 / 55. 7.100 Input #0, image2, from 'data/123.jpg': Duration: 00:00:00.04, start: 0.000000, bitrate: 170762 kb/s Stream #0:0: Video: mjpeg (Progressive), yuvj444p(pc, bt470bg/unknown/unknown), 1920x1080, 25 tbr, 25 tbn, 25 tbc Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native)) Press [q] to stop, [?] for help [swscaler @ 000001d3c41b6c00] deprecated pixel format used, make sure you did set range correctly Output #0, image2, to 'data/709ad7cc5a8a11ec82c82c4d54eea02b.jpg': Metadata: encoder : Lavf58.45.100 Stream #0:0: Video: mjpeg, yuvj444p(pc), 1280x720, q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc Metadata: encoder : Lavc58.91.100 mjpeg Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A frame= 1 fps=0.0 q=7.8 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.28x video:106kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown data/709ad7cc5a8a11ec82c82c4d54eea02b.jpg

效果图片：

OK，没什么问题。

总结

没啥好总结的。

Perhaps one day you muster the courage, to make a clean breast of everything in the heart only ended up to let others see the joke, because they did not understand you to say what, also don't know why do you think things are so important, say, almost cried out. I think the worst thing in the world, than with full of heart and secret, but no one can tell, but no one can understand!

——《肖申克的救赎》

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