如何将avi文件转换为yuv 420（软件/ matlab /源代码/ c / c ++任何东西）

Question

伙计我想将avi文件转换为yuv 420视频片段。有没有办法做到这一点？ THX！

Answer 1

您可以将AVI文件读入MATLAB using the built-in mmreader class。将AVI帧读入电影帧的结构数组后，可以使用MathWorks File Exchange中提交的saveFileYuv函数将它们保存为YUV文件：

• Convert YUV CIF 4:2:0 video file to image files Da Yu

您的代码可能如下所示：

%# Get the video data:

vidObj = mmreader('myVideo.avi');  %# Create a video file object
nFrames = vidObj.NumberOfFrames;   %# Get the number of frames
vidHeight = vidObj.Height;         %# Get the image height
vidWidth = vidObj.Width;           %# Get the image width

%# Preallocate the structure array of movie frames:

mov(1:nFrames) = struct('cdata',zeros(vidHeight,vidWidth,3,'uint8'),...
                        'colormap',[]);  %# Note that colormap is empty!

%# Read each video frame into the structure array:

for k = 1:nFrames
  mov(k).cdata = read(vidObj,k);  %# Place frame k in the cdata field of mov(k)
end

%# Save the movie frame array as a YUV 4:2:0 file:

saveFileYuv(mov,'myVideo.yuv',1);

Answer 2

我不建议使用Matlab。你想做什么可以使用mplayer / mencoder轻松完成...为什么要使用Matlab？

mencoder.exe -of rawvideo clock.avi -o clock.yuv -nosound -ovc raw

如果colrs不正确，您可以添加-vf swapuv来交换U和V组件。