运动矢量提取从编码视频文件 [英] Motion Vector extraction from encoded video file

问题描述

我试图从编码的mp4文件中提取运动矢量数据。在上一篇文章中，我发现
的答案是 http：//www.princeton。 edu /〜jiasic / cos435 / motion_vector.c 。但是我无法运行代码没有错误。文件中必须包含哪些其他文件？我是新手。所以任何帮助将不胜感激。

解决方案

我已经修改了mplayer（ffmpeg）的源代码来提取任何压缩的运动矢量视频，我已经上传了可用于提取运动矢量的修改后的mplayer代码。 http： //www.cs.umd.edu/~bharat/modmplayer.zip

如果您使用修改过的，您需要执行以下操作来提取运动矢量版本的mplayer

./ mplayer -nosound -fps 200 -vo null -lavdopts vismv = 1 path_of_video_file 2> path_of_output_file.txt

预编译的可执行文件和一些有用的文件在输出文件夹

中可用

I am trying to extract motion vector data from an encoded mp4 file. In a previous post I found an answer http://www.princeton.edu/~jiasic/cos435/motion_vector.c . But I am not able to run the code without errors . What are the other files that have to be included in the file ? I am a newbie here . So any help would be appreciated .

解决方案

I had modified the source code of mplayer (ffmpeg) to extract motion vectors for any compressed video, I have uploaded the modified mplayer code which can be used for extracting motion vectors here http://www.cs.umd.edu/~bharat/modmplayer.zip

You need to do the following to extract motion vectors if you use the modified version of mplayer

./mplayer -nosound -fps 200 -vo null -lavdopts vismv=1 path_of_video_file 2> path_of_output_file.txt

Pre-compiled executable and some useful files are available in the outputs folder

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