Python 图片视频模糊化实现案例

目录

• 前言

• 环境依赖

• 代码

前言

本文主要分享一个可以将图片或者视频模糊化的工具代码。技术路线主要是使用ffmpeg滤镜。

环境依赖

ffmpeg环境部署，依赖包下载，给大家介绍一个调用ffmpeg比较好的库ffmpy。安装命令：

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    : 2021/11/18 0:06
# @Author  : 剑客阿良_ALiang
# @Site    :
# @File    : blur_tool.py
import os
import uuid
from ffmpy import FFmpeg

def blur_image(image_path: str, output_dir: str, level=10):
   ext = os.path.basename(image_path).strip().split('.')[-1]
   if ext not in ['png', 'jpg']:
       raise Exception('format error')
   ff = FFmpeg(
       inputs={
           '{}'.format(image_path): None}, outputs={
           os.path.join(
               output_dir, '{}.{}'.format(
                   uuid.uuid4(), ext)): '-filter_complex "boxblur={}:1:cr=0:ar=0"'.format(level)})
   print(ff.cmd)
   ff.run()
   return os.path.join(output_dir, '{}.{}'.format(uuid.uuid4(), ext))

def blur_video(video_path: str, output_dir: str, level=10):
   ext = os.path.basename(video_path).strip().split('.')[-1]
   if ext not in ['mp4', 'avi', 'flv']:
       raise Exception('format error')
   ff = FFmpeg(
       inputs={
           '{}'.format(video_path): None}, outputs={
           os.path.join(
               output_dir, '{}.{}'.format(
                   uuid.uuid4(), ext)): '-filter_complex "boxblur={}:1:cr=0:ar=0"'.format(level)})
   print(ff.cmd)
   ff.run()
   return os.path.join(output_dir, '{}.{}'.format(uuid.uuid4(), ext))

代码说明

1、blur_image和blur_video两个方法参数都是：图片/视频路径、输出文件夹目录、模糊等级。

2、模糊等级越高，模糊效果越大，默认10。

3、后缀校验按照需要加，我只是随便写了几种。

4、为了输出文件名不重复，用uuid作为文件名。

校验一下

下面是我准备的图片以及视频截图：

验证代码

if __name__ == '__main__':
   print(
       blur_image(
           'C:\\Users\\yi\\Desktop\\1.jpg',
           'C:\\Users\\yi\\Desktop\\'))
   print(
       blur_video(
           'C:\\Users\\yi\\Desktop\\2.mp4',
           'C:\\Users\\yi\\Desktop\\'))

执行结果

E:\ProgramData\Anaconda3\envs\pytorch\python.exe C:/Users/yi/PycharmProjects/test/blur_tool.py
ffmpeg -i C:\Users\yi\Desktop\1.jpg -filter_complex boxblur=10:1:cr=0:ar=0 C:\Users\yi\Desktop\3dae4af4-8b9a-468c-b236-0e9dd32ea1b2.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 'C:\Users\yi\Desktop\1.jpg':
 Duration: 00:00:00.04, start: 0.000000, bitrate: 103100 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 (mjpeg) -> boxblur
 boxblur -> Stream #0:0 (mjpeg)
Press [q] to stop, [?] for help
Output #0, image2, to 'C:\Users\yi\Desktop\3dae4af4-8b9a-468c-b236-0e9dd32ea1b2.jpg':
 Metadata:
   encoder         : Lavf58.45.100
   Stream #0:0: Video: mjpeg, yuvj444p(pc), 1920x1080, 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=4.4 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.288x    
video:167kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
C:\Users\yi\Desktop\c3a052c5-5cdc-4c74-8b3e-c1f1ca2173b1.jpg
ffmpeg -i C:\Users\yi\Desktop\2.mp4 -filter_complex boxblur=10:1:cr=0:ar=0 C:\Users\yi\Desktop\06b58bbd-5218-4856-a2bb-ff22e20571c9.mp4
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, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\yi\Desktop\2.mp4':
 Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2avc1mp41
   encoder         : Lavf58.45.100
 Duration: 00:00:10.02, start: 0.000000, bitrate: 2013 kb/s
   Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 1884 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
   Metadata:
     handler_name    : VideoHandler
   Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 123 kb/s (default)
   Metadata:
     handler_name    : SoundHandler
Stream mapping:
 Stream #0:0 (h264) -> boxblur (graph 0)
 boxblur (graph 0) -> Stream #0:0 (libx264)
 Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0000015d4492aec0] using SAR=1/1
[libx264 @ 0000015d4492aec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000015d4492aec0] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000015d4492aec0] 264 - core 161 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=23 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'C:\Users\yi\Desktop\06b58bbd-5218-4856-a2bb-ff22e20571c9.mp4':
 Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2avc1mp41
   encoder         : Lavf58.45.100
   Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
   Metadata:
     encoder         : Lavc58.91.100 libx264
   Side data:
     cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
   Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
   Metadata:
     handler_name    : SoundHandler
     encoder         : Lavc58.91.100 aac
frame=  240 fps= 36 q=-1.0 Lsize=    2109kB time=00:00:10.00 bitrate=1726.7kbits/s speed=1.52x    
video:1947kB audio:152kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.451836％
[libx264 @ 0000015d4492aec0] frame I:13    Avg QP:14.73  size: 25810
[libx264 @ 0000015d4492aec0] frame P:78    Avg QP:19.21  size: 13141
[libx264 @ 0000015d4492aec0] frame B:149   Avg QP:19.57  size:  4245
[libx264 @ 0000015d4492aec0] consecutive B-frames: 11.2％ 11.7％ 18.8％ 58.3％
[libx264 @ 0000015d4492aec0] mb I  I16..4: 38.8％ 57.4％  3.8％
[libx264 @ 0000015d4492aec0] mb P  I16..4: 15.5％ 28.5％  0.1％  P16..4: 23.4％  2.2％  0.5％  0.0％  0.0％    skip:29.8％
[libx264 @ 0000015d4492aec0] mb B  I16..4:  2.5％  1.5％  0.0％  B16..8: 20.9％  0.9％  0.0％  direct: 4.2％  skip:70.0％  L0:44.8％ L1:53.6％ BI: 1.6％
[libx264 @ 0000015d4492aec0] 8x8 transform intra:59.9％ inter:98.9％
[libx264 @ 0000015d4492aec0] coded y,uvDC,uvAC intra: 11.9％ 30.3％ 5.0％ inter: 2.1％ 9.8％ 0.1％
[libx264 @ 0000015d4492aec0] i16 v,h,dc,p: 32％ 25％  6％ 38％
[libx264 @ 0000015d4492aec0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 41％ 21％ 24％  2％  3％  2％  4％  2％  1％
[libx264 @ 0000015d4492aec0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 42％ 23％ 12％  4％  8％  5％  4％  3％  1％
[libx264 @ 0000015d4492aec0] i8c dc,h,v,p: 66％ 18％ 14％  3％
[libx264 @ 0000015d4492aec0] Weighted P-Frames: Y:39.7％ UV:23.1％
[libx264 @ 0000015d4492aec0] ref P L0: 68.7％  3.0％ 19.9％  8.0％  0.4％
[libx264 @ 0000015d4492aec0] ref B L0: 85.4％ 11.4％  3.2％
[libx264 @ 0000015d4492aec0] ref B L1: 96.7％  3.3％
[libx264 @ 0000015d4492aec0] kb/s:1592.89
[aac @ 0000015d4498ed00] Qavg: 3689.104
C:\Users\yi\Desktop\ffbe6a82-1220-447e-8dea-31a42be16ca4.mp4

Process finished with exit code 0

图片模糊后的效果

视频模糊后的截图

来源：https://blog.csdn.net/zhiweihongyan1/article/details/121391858