Re: [Scilab-users] scicv - CV_FOURCC

2021-02-11 Thread 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  On Behalf Of P M
Sent: Wednesday, February 10, 2021 7:45 PM
To: International users mailing list for Scilab. 
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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[Scilab-users] scicv - CV_FOURCC

2021-02-10 Thread P M 
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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