Opencv报错：Failed to load OpenH264 library: openh264-1.8.0-win64.dll 解决方法

最新推荐文章于 2024-04-05 09:10:28 发布
最新推荐文章于 2024-04-05 09:10:28 发布
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分类专栏： Python 文章标签： opencv 计算机视觉
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使用python第三方库opencv处理MP4视频时，由于Opencv没有自带H.264编码器，需要到官方github上https://github.com/cisco/openh264/releases下载相关的dll文件

在这里插入图片描述
根据自己需要的版本下载，我这里是下载win64版，下载后解压到python工程根目录下即可

Failed to load OpenH264 library: openh264-1.8.0-win64.dll Please check environment and/or download
风吹落叶的博客
08-11 7775
Failed to load OpenH264 library: openh264-1.8.0-win64.dll Please check environment and/or download library: https://github.com/cisco/openh264/releases [libopenh264 @ 000001866c109c40] Incorrect library version loaded Could not open codec ‘libopenh264’: .
Centos7编译安装FFMPEG+H264
Zz22333的博客
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编译具体步骤如下： 先解压openh264-master.zip unzip openh264-master.zip cd openh264-master/ 执行make make 如果出现nasm:命令查不到，则需要安装nsam，使用命令 yum install build-essential nasm -y 执行 make install make install 如果出现git: command不存在可忽略 然后编译ffmpeg 解压ffmpeg-4.1.4.tar.
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python opencv Failed to load OpenH264 library: openh264-1.8.0-win64.dll
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邹九的个人博客
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C:\Users\10696\.virtualenvs\10696-h6N35vds目录下的Lib、Scripts、share和src都放置了的，然后python的opencv就可以正常导入的。下载相应的dll库以后，解压缩，然后放在相应的python目录。在写视频的时候，发现出现了问题。因不知道放在哪里的，所以。正常导入以后会出现消息。
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将该文件复制到虚拟环境中python工程根目录下，如下图我的环境名为yolo_cuda，将dll文件复制到此路径下即可。选择好自己的系统对应的库文件，我是windows，下载的是openh264-1.8.0-win64.dll。主要是应为原生安装的OpenCV是没有H264编码器的，需要自行配置。这里配置的是anaconda下python的虚拟环境。
Failed to load OpenH264 library: openh264-1.8.0-win64.dll Please check environment and/or download
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Failed to load OpenH264 library: openh264-1.8.0-win64.dll Please check environment and/or download library: https://github.com/cisco/openh264/releases 按照提示在GitHub上下载对应的版本，放到PATH目录中，让Python可以正常加载这个动态库...
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1、报以下错误 > Failed to load OpenH264 library: openh264-1.8.0-win64.dll Please > check environment and/or download library: > https://github.com/cisco/openh264/releases > > [libopenh264 @ 00000212dce9a000] Incorrect library version loaded &gt
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OpenH264 是思科公司发布的一个开源的 H.264 编码和解码器。编码器特性Constrained Baseline Profile up to Level 5.2 (4096x2304)Arbitrary resolution, not constrained to multiples of 16x16Rate control with adaptive quantization, or constant quantizationSlice options: 1 slice per frame, N slices per frame, N macroblocks per slice, or N bytes per sliceMultiple threads automatically used for multiple slicesTemporal scalability up to 4 layers in a dyadic hierarchySpatial simulcast up to 4 resolutions from a single inputLong Term Reference (LTR) framesMemory Management Control Operation (MMCO)Reference picture list modificationSingle reference frame for inter predictionMultiple reference frames when using LTR and/or 3-4 temporal layersPeriodic and on-demand Instantaneous Decoder Refresh (IDR) frame insertionDynamic changes to bit rate, frame rate, and resolutionAnnex B byte stream outputYUV 4:2:0 planar input解码器特性Constrained Baseline Profile up to Level 5.2 (4096x2304)Arbitrary resolution, not constrained to multiples of 16x16Single thread for all slicesLong Term Reference (LTR) framesMemory Management Control Operation (MMCO)Reference picture list modificationMultiple reference frames when specified in Sequence Parameter Set (SPS)Annex B byte stream inputYUV 4:2:0 planar output支持的操作系统Windows 64-bit and 32-bit (initial release is only 32-bit, 64-bit will follow soon)Mac OS X 64-bit (initial release does not include this target, will follow soon)Linux 64-bit and 32-bit (initial release is only 32-bit, 64-bit will follow soon)Android 32-bit (initial release does not include this target, will follow soon)iOS 64-bit and 32-bit (not supported yet, may be added in the future)支持的处理器Intel x86 optionally with MMX/SSE (no AVX yet, help is welcome)ARMv7 optionally with NEON (initial release does not include this target, will follow later)Any architecture using C/C fallback functions 标签：OpenH264
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m0_74102890的博客
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moyebaobei1的博客
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需求Windows x64支持h264编码的视频 pjsip如果需要支持h264编码格式的视频，需要引入openh264。 openh264源码下载 https://github.com/cisco/openh264 编译工具 MinGW-w64 , vs2019, nasm, Windows SDK MinGW-w64,https://sourceforge.net/projects/mingw-w64/ 2. nasm,https://ww...
Ubuntu20.04 在anaconda上，opencv-python支持h264编码
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opencv使用ffmpeg进行视频流的编解码，对于h264格式视频，需要额外安装openh264 FFMPEG build includes support for H264 encoder based on the OpenH264 library. OpenH264 Video Codec provided by Cisco Systems, Inc. See https://github.com/cisco/openh264/releases for details and OpenH2
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先写下遇到的问题： 代码中用到VideoWrite函数，结果程序运行时提示：can't find encoder for codec id 28，运行结果的视频打不开~~ 解决方案： 首先，下载 x264vfw，并安装； 然后将代码中VideoWrite参数改为：CV_FOURCC('X','2','6','4') 。 再次运行程序，发现仍会提示can't find encoder fo
解决OpenCV错误：缺失dll文件的正确处理方法
在处理计算机视觉和图像处理项目中，OpenCV（Open Source Computer Vision Library）是一个非常流行的开源库，它包含了大量的计算机视觉算法。该库广泛应用于工业、学术研究等多个领域，尤其是在机器学习、人脸识别...
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