http://www.amazon.com/dp/B07BGXVGLS/?tag=level1techs-20
This is a companion discussion topic for the original entry at https://level1techs.com/video/pengo-4k-4k-ish-hdmi-grabber-review
This is a companion discussion topic for the original entry at https://level1techs.com/video/pengo-4k-4k-ish-hdmi-grabber-review
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Do a teardown. I’m interested in what’s inside it. If there’s a Korean scaler chip, there’s your answer to how it scales down 4K.
My beef with UVC on Linux is frametime consistency for 59.94 or 29.97, because UVC was designed with integer NON-decimal framerates in mind. I would love to test all the UVC devices in the world to see which one properly does 59.94 or 29.97 PROPERLY in Linux, but alas, I’ve run dry on my spending budget.
If you’re up for it, do the testufo [dot] com Frame Skipping check on these UVC devices capturing 59.94 or 29.97. I want to know which one properly captures it over a long period of time, because frame sync issues with “drop frame” video capture take a while to manifest.
Blackmagic devices I know for sure, because they have no scaler before the capture, they can do this flawlessly.
Magewell PCI-E ones on V4L2 I’m not sure of because I don’t own one, but there are reports of dropped frames not because of the oddball framerate, but because of heat on the higher end Magewells. Magewells also have a OSD SDK and Scaler before the capture, so that makes me a little concerned it could have the same issues as UVC devices.
Oh, and in the comparison, it looks like the capture from the Pengo is at 0-255 luminance, but OBS only captured 16-235 of 0-255, so the contrast looks too high. May need to run this with the YUV color range at “Full.”
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a bit off track, but the song from Kevin MacLeod caught my ear…was curious which track you used?