我试图使用以下代码行从一个小视频中提取帧:
clc;
close all;
% Open an sample avi file
[FileName,PathName] = uigetfile('*.AVI','Select the Video');
file = fullfile(PathName,FileName);
%filename = '.\003.AVI';
mov = MMREADER(file);
% Output folder
outputFolder = fullfile(cd, 'frames');
if ~exist(outputFolder, 'dir')
mkdir(outputFolder);
end
%getting no of frames
numberOfFrames = mov.NumberOfFrames;
numberOfFramesWritten = 0;
for frame = 1 : numberOfFrames
thisFrame = read(mov, frame);
outputBaseFileName = sprintf('%3.3d.png', frame);
outputFullFileName = fullfile(outputFolder, outputBaseFileName);
imwrite(thisFrame, outputFullFileName, 'png');
progressIndication = sprintf('Wrote frame %4d of %d.', frame,numberOfFrames);
disp(progressIndication);
numberOfFramesWritten = numberOfFramesWritten + 1;
end
progressIndication = sprintf('Wrote %d frames to folder "%s"',numberOfFramesWritten,outputFolder);
disp(progressIndication);
然而,运行此代码时我遇到了以下错误:
??? Error using ==> extract at 10
The file requires the following codec(s) to be installed on your system:
Unknown Codec
有人能帮我解决这个错误吗?谢谢。
mmreader
已经过时了,你是否尝试使用VideoReader
? - Amro