Reply 160 of 179, by darry
foil_fresh wrote on 2020-09-18, 04:10:
I'm interested in doing some video recordings - doesn't have to be amazing picture quality, just the ability to capture 60fps. would the Extron mentioned above be good to pair with a so-so pci-e hdmi capture card?
also, when it comes to playing a game as well as capturing it, would i be better off getting a hdmi splitter AFTER converting or using a VGA splitter before converting? would I lose signal by splitting the vga signal to 2 outputs?
i'd be capturing 320x200/320x240/640x400/640x480/800x600/1024x768/1280x1024. audio is routed direct from a KVM to my main PC where the video capture card will be also.
The Extron is good and likely compatible with cheap PCIE/USB HDMI capture cards that only handle standard ATSC resolutions (1080p, 720p, etc) and possibly VESA ones . It won't be as sharp as an OSSC, but still much better than an Nvidia card's upscaling 320x200 to whatever over DVI .
An HDMI splitter is probably simpler and less likely to have issues, IMHO . High quality VGA splitting is possible, but requires a decent quality high bandwidth splitter and proper VGA cables . The only advantage of splitting VGA instead of HDMI, IMHO, is that bypassing the scaler/digitizer can give lower latency when playing .
While doing video/audio capture using separate devices, be mindful of possible AV sync issues . Virtualdub(2), for example, has an option to re-sample captured audio to maintain AV sync . Another option for audio capture is to get a version of the Extron that support audio input and to capture audio along with video over HDMI .
Finally, regarding audio, you may experience ground loop issues (hum) . A ground loop isolator might be something to consider if you can't find another solution .
Good luck . Feel free to ask more questions .
EDIT : Out of curiosity, what PCIE capture card do you intend to use ?