[Cin] offtopic: Digitize and record Video with A/D USB adapters

Marco Ciampa ciampix at posteo.net
Thu Oct 14 08:11:28 CEST 2021

On Wed, Oct 13, 2021 at 10:21:09PM +0200, Terje J. Hanssen via Cin wrote:
> Den 12.10.2021 08:44, skrev Marco Ciampa via Cin:
> > 
> > The thing is: the analog to digital converters _and_ the digital grabbers
> > inside cheap pal/ntsc to usb2 are a crap. If you want a really good
> > quality conversion you have to open wide your wallet and buy a really
> > expensive grabber just to be sure that it has inside a good (but not so
> > expensive in itself) analog to digital converter.
> > 
> > ... or use a cheap external one like this (just an example):
> > 
> > https://www.amazon.com/ZHIYUEN-Adapter-Universal-Converter-Consumption/dp/B07WTV8FGF
> More documentation is needed ;)
> The requirement was 8-bit color depth and video format (sampling) 4:2:2
> throughout the workflow.
> The SCART to HDMI A/D converters I've searched fast on so far had missing
> information about this 

1) It was just an example...
2) If you search you will find...
3) It's only ~8 euros, just grab one and try and thanks to Amazon, you
   have 1 month to give it back if that does't work or suites you.
   Other on-line shops may have similar return policies...

> (just like the S-video&composite to usb2 converters/grabbers)

did I already say (I suggest you to...) _DO NOT BUY_ inexpensive
S-video/composite grabbers?

> > and to capture use one of these:
> > 
> > https://www.amazon.com/IPXOZO-Video-Capture-Card-USB/dp/B08YRWB7VD
> The sample grabber supports Video output format: YUV420/JPEG and video
> format 8/10/12bit Deep color (?)

I repeat: that was just an example, as a proof of concept, but in this
instance, yes, I read from the site (as you may have done already):

 - HDMI resolution: Max input 4K 60Hz 
 - Video output resolution: Max output 1920×1080 at 30Hz 
 - Video output format: YUV420/JPEG
 - Support video format: 8/10/12bit Deep color 
 - Support audio format: L-PCM 
 - Support AWG26 HDMI standard cable: input up to 10 meters

> ---------------
> Terje J. H
> > these are just examples, (I do not work for Amazon! ;-) I picked them
> > randomly and they _SHOULD_ work, but I cannot be 100% sure, never tried
> > those in particular... it is just to explain the principle of this
> > method... that you should give it a go... it's not such a great expense.
> > 
> > Please note that if you want a pass through usb video grabber (useful for
> > example to grab games) you have to spend a bit (5xtimes!) more for a
> > device with input _and_ real time output.
> > 

Did I say that is was just an example? ;-)


Marco Ciampa

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