MPC-HC Save Images every 30 seconds.

[kmatt02]

Hey guys.

I have a question and I really hope MPC-HC can do this. I assume it can because of the thumbnail gallery feature.

So, I have a video file and I need full resolution image capture from the video every 30 seconds. So I have 3 hours of footage - I essentially want to press a button and out will pop 360 full res images from my video in a folder, each taken at 30 second intervals throughout.

Please help!

Cheers.

[clsid]

The "grab" filter in ffdshow can do that.

The "save thumbnails" feature in MPC can generate a single image with multiple small screenshots taken from the video.

[kmatt02]

Thanks for the pointer.

I've been playing in FFDshow and I've managed to make it take a screengrab every 750 frames (25 frames per second * 30 = 750).

So its dropping out a picture every 30 seconds. But this only works if I play the video in real time.

How can I just open the file and have all the images drop out instantly?

[clsid]

That's not possible. At least not with MPC and ffdshow.

[gngn]

you could use Avisynth and it's ImageWrite option. but i dont know what would be the best method.
i've tried with the following script, but it didnt work with MPC+ffdshow (havent tried other Directshowplayers or other H264 decoders, as it was a x264 movie), i had to load it in Virtualdub. even there, for a 100min movie set to capture every 60sec it would stall after ~35 frames (it worked then by pressing Stop and then again Play, and then again after the next ~30 frames). all in all it took under 10min.

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DirectShowSource("sourceclip")
Killaudio()
selectevery(750,0) #select frame every 30 sec
ConvertToRGB()
ImageWriter("C:\movie", 0, 0, type="png")
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