[Scilab-users] scicv - CV_FOURCC

[Clément David]

Hello Philipp,


Question 1: What other formats are possible for "CV_FOURCC"?

https://www.fourcc.org/ describes what exist and might be supported by our binary. The codecs are only the ones supported by ffmpeg (included as a DLLs) or your system ones.



Question 2: What format should - ideally - the input images have? Currently I use BMP's, created with xs2bmp.

Yes BMP is fine. The rational are ; for a better encoding, use lossless image format ; for speed use non-compressed ones.
Thanks,

Clément

From: users <users-bounces at lists.scilab.org> On Behalf Of P M
Sent: Wednesday, February 10, 2021 7:45 PM
To: International users mailing list for Scilab. <users at lists.scilab.org>
Subject: [Scilab-users] scicv - CV_FOURCC

Dear ,

from the scicv toolbox I use the new_VideoWriter - function:

videoWriter = new_VideoWriter(filename, fourcc, fps, frameSize)


Everything fine so far, except:

There are artefacts in the final video., which I guess are connected to compression.

Here are some lines from my code:

videoWriter = new_VideoWriter(outPath, CV_FOURCC('M', 'P', '4', '2'), frameRate, size(img));



if ~VideoWriter_isOpened(videoWriter) then

    disp("Cannot create video file: " + outPath);

end



for i = 1:nrOfFiles

    img = imread(inPath(i));

    VideoWriter_write(videoWriter, img);

    disp(i)

end



delete_VideoWriter(videoWriter);

Question 1: What other formats are possible for "CV_FOURCC"?
I just used    'M', 'P', '4', '2'      , because it's the only mentioned in the help.



Question 2: What format should - ideally - the input images have? Currently I use BMP's, created with xs2bmp.

Thank you,

Philipp


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