動画をmp4で保存

Linuxでは対応していない模様…

ffmpegをinstallし、パスを通しておく必要がある

code:matlab

function mp4Path = avi2mp4(aviPath, deleteOriginal)

% Convert AVI to MP4 using ffmpeg

%

% Input:

% aviPath - string, path to the input AVI file

% deleteOriginal - boolean, whether to delete the original AVI file (default: false)

%

% Output:

% mp4Path - string, path to the output MP4 file

% Set default value for deleteOriginal if not provided

if nargin < 2

deleteOriginal = false;

end

% Generate output MP4 filename

mp4Path = regexprep(aviPath, '\.avi', '.mp4');

% Construct ffmpeg command based on the operating system

if isunix % for linux

cmd = sprintf('ffmpeg -i %s -y -movflags faststart -pix_fmt yuv420p -crf 9 -preset slow %s', aviPath, mp4Path);

elseif ispc % for windows

cmd = sprintf('ffmpeg.exe -i %s -y -movflags faststart -pix_fmt yuv420p -crf 9 -preset slow %s', aviPath, mp4Path);

else

error('Unsupported operating system');

end

% Execute ffmpeg command

% Check if the conversion was successful

if status ~= 0

error('FFmpeg conversion failed with error: %s', cmdout);

end

% Delete the original AVI file if requested

if deleteOriginal

delete(aviPath);

end

end