These stickies are really overdue a revamp.

Even though the thread title says "new", this is a legacy of a time when laserdisc captures were the main push of the forum.

There's not really much point of creating a comparison for Harmy's project as there is nothing to compare it against. (Although if they were to be a downscaled DVD version I could add it to my Custom DVD page.)

Haven't seen anything from Zion for a few years so I doubt that his site is still active.

VirtualDubMod has never been recommended for taking screenshots, even for DVDs, as it alters the colours. The latest VirtualDub with the MPEG-2 plugin, or AviSynth with DGIndex/MPEG2Source would be my recommendation for DVDs. For MKV I'd try AviSynth with ffmpegsource. Not sure you could trust MPC not to apply any processing to the video that may affect the screenshot.

JPG is used because the file size is smaller than PNG, thus the screens are quicker to load.