Question is, why do I have to use the command /dshowlegacy with this capture card? Also is there any way to solve this instead of using this command line?
@Bruno Pato: Because it’s not a professional capture card with professional drivers. You should get a Decklink or AJA card instead.
Hi Bruno,
There is no other way to solve this than using the command line.
Sadly, your device is using a legacy feature of Windows while there is a newer solution, this feature was even legacy when the device first came out.
Warmest regards,
Hello, Eifert! Thank you again for the quick answer. I'm really curious about the therm 'professional', because I have some other cheap USB capture cards that works flawlessly with Aximmetry. It doesn't seem to me that Aximmetry needs a professional capture card as the cheapest ones I have bought via Ali Express work perfectly. Maybe there is a more technical explanation for this issue?
Again thank you so much for your time.
Hi,
The "cheapest via Ali Express" will probably use USB 2.0. The problem with any USB 2.0, is that USB 2.0 doesn't have enough bandwidth for example YUY2/UYVY ('uncompressed') color encoding in FHD (1080p). So instead it uses MJPEG color encoding, which will result in quality loss, even if that is hard to notice by the naked eye. MJPEG shouldn't be used in professional video production, it should only be for personal use, like video chat.
Also, any device from unknown brands that says USB 3.0 and has a cheap price will probably use MJPEG.
@TwentyStudios probably meant by professional capture cards, that Decklink or AJA are professional cards cause these cards are intended for the broadcasting, television, and filming market. While Avermedia is intended for computer game streamers.
Probably all of them can be as capable, but the professional ones are more reliable.
You can read more about capture cards here: https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/supported-hardware/pc/capture-cards/
Warmest regards,
Thank you so much for the technical explanation, Eifert, you're helping me a lot to understand how things work with Aximmetry.
I just checked the link you sent, and I came to this phrase:
'There are plenty of other manufacturers that make more mainstream capture cards such as Elgato and AVerMedia. Their capture cards use the DirectShow API that Aximmetry fully supports. In simple terms, anywhere you see a device recognized as a DirectShow device (even a simple webcam) Aximmetry can also use it. Though, keep in mind that typically this type of device suffers from reduced image quality and frame rate consistency compared to professional cards'.
So as the documentation says, it seems the Avermedia capture card should work in my case, right? Maybe I'm missing something else to make it work?
Hi,
That part of the documentation tries to say that these brands use DirectShow API or Microsoft Media Foundation, unlike the professional capture cards which come with their own API instead of using Windows's built-in systems. So software has to implement each of these professional capture card brand's APIs to use them.
Warmest regards,
Hi Bruno,
It is likely that you will be only able to solve this with a 3rd party program that streams the webcams or the Avermedia capture card.
As Aximmetry must use either the Microsoft Media Foundation multimedia framework pipeline or the Microsoft DirectShow multimedia framework.
Which webcams don't work with the /dshowlegacy command? Maybe these webcams have an option to support the legacy Microsoft DirectShow multimedia framework.
Warmest regards,