mgsam error - Expected input type different (Matlab2015b Windows)

[shockmonger]

mgsam = mgvideosample(mg,'Sampling',[2,2]);
Error using mgvideosample (line 35)
Expected input to be one of these types:

char

Instead its type was double.

[benlyyan]

hi, Teja
Try mgsam = mgvideosample(mg,[2,2]) without 'Sampling' to see if error again

[shockmonger]

Hi!
This time im getting this:
mgsam = mgvideosample(mg,[2,2]);
_sampling video_
Warning: No video frames were written to this file. The file may be invalid.

In VideoWriter/close (line 267)
In VideoWriter/delete (line 202)
In mgvideosample (line 19)
Undefined function or variable 'progmeter'.

Error in mgvideosample (line 42)
progmeter(i,numf);

[benlyyan]

I run it ok.But your question is important...
try to see if function progmeter is in you MGT. If not, add it
to see what's wrong, you can check if mg.video.obj.CurrentTime = 0, if not, set it 0. Try it again.
if still errors, try to run mgsam = mgvideosample(mg,[2,2],'newvideo.avi');
Please tell the results later

[benlyyan]

It could be something like if you reuse sampled mg to down sample it again without giving sampled video new name, matlab can not read videoframe from the sampled video, since the function by default initiate new vieo named samplevideo.avi again.

[shockmonger]

the problem seems to be with progmeter, as you said, although the progmeter
error comes only when i remove the 'sampling' argument from the function.

I tried to run passing the 'newvideo.aiv' also, but it didn't work, neither
with 'newvideo.avi'.

Tried setting current time to 0 also, it just seems to reset itself after i
run the function, and produces the same error. Is it a dependency problem
on some libraries? I'll try to look into it more as well.

On Mon, Jun 13, 2016 at 2:40 PM, benlyyan [email protected] wrote:

It could be something like if you reuse sampled mg to down sample it again
without giving sampled video new name, matlab can not read videoframe from
the sampled video, since the function by default initiate new vieo named
samplevideo.avi again.

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[benlyyan]

It should be nothing to do with progmeter. Other functions like mgvideocrop, mgvideoadjust, etc have progmeter called inside. You can simply run other functions(mgvideocrop) to see if progmeter has problem. I see that the problem is VideoWriter failing to write.
I will be IMV tomorrow, if you are free sometime, we can check it.