[SOLVED] Picture Player shows random black frames

dbini

I've built another animation station that captures stage to JPG, loads them into the media bin, and scrolls through the captures with a Picture Player. I'm running a Pulse Generator at around 2.5Hz to trigger the Add of a Counter to scroll through the last 50 images. BUT - there's always a black frame or 2. The media thumbnails are all showing images, but sometimes one or two of these images will not load, and I get a black frame instead of the image. It's pretty random, with different frames not working each time the loop runs.
Does anyone have any ideas of how to maximise efficiency and make sure every picture loads correctly.

(I tried adding a Picture Preload into the system, but it kept crashing Isadora)

dbini

to illustrate the issue:

and here's (a slightly earlier version of) the patch. animation-2025-v4.0.9.izz.zip

mark_m

@dbini

I get exactly the same issue testing on Windows on the big machine in my sig: random black frames. All the individual captured jpegs seem just fine. I tried in .png to see if it was a decompression issue from JPEGs. Same black frames. Also with BMP and TIFF.

I see nothing in the patch so suggest why this would be happening. All I can do is confirm. Someone else will have to look under the bonnet.

Cheers

not that Mark

dbini

i noticed in the video i recorded that on the third loop, it jumps back to a jpg that was further up the list, so, for some reason, some of the jpgs in the bin are not being recognised, and therefore not counted as 'official' items in the media bin. I can't tell when in the process this glitch is happening, but it is different every loop. I tried changing the default frame rate and background processes, but those changes had no effect on the glitch. Even running at a slower Pulse (0.5Hz) produces the same glitch.

jandraka

Hi,

If you add a Video Mixer actor to the Picture Player and change the monitor link to the Video Mixer output, the sequence displays correctly.
I think the Picture Player output, since there's no continuous GPU output, loses the link.
Hope this helps.

animation-2025-v4.0.9.izz.zip

dbini

@jandraka

Thankyou! that totally works. I had tried adding different actors in that position, but not a Video Mixer. : )