Software Based Scan Converter for BMD devices - SDI Out

Got something to discuss that's not about Blackmagic products? Then check out the Off-Topic forum!
  • Author
  • Message
Offline

GallerySienna

  • Posts: 54
  • Joined: Sun Jan 06, 2013 10:00 pm
  • Real Name: Mark Gilbert

Software Based Scan Converter for BMD devices - SDI Out

PostWed Jul 06, 2016 10:24 am

Hi Folks.

We recently shipped a product called NDI ScanConverter (http://sienna.tv/ndi) which is used to send OSX computer desktop through the NDI IP Video protocol. Some of the features include the ability to select a single window to output, or even to select a crop area on the screen to zoom into on the output - so its quite different to simply taking an HDMI out of a display adaptor. It also manages output of Audio. A good example would be to select an area of webpage and present that on the SDI out - without using a fullscreen mode.

Later we realised that this functionality might also be useful for BlackMagic Users, but instead of NDI, to send the desktop directly out of the SDI output, including embedded audio. Since 90% of the work was already done for the NDI ScanConverter, this new application 'SDI ScanConverter' is already finished

The software should work with all BMD interfaces, so far tested with DeckLink DUO2 on MacPro and UltraStudio Mini Monitor on MacMini.

I wanted to ask the forum about their interest in SDI ScanConverter, and get any feedback on additional features or applications for this product.

I have embedded a screenshot which shows how the software interface is setup, and the various options. If anyone has any comments, suggestions or otherwise, please let me know.

Thanks for your feedback.

Image
Offline
User avatar

Tom_Bassford

  • Posts: 1606
  • Joined: Wed Aug 22, 2012 8:12 am
  • Location: Europe / UK

Re: Software Based Scan Converter for BMD devices - SDI Out

PostWed Jul 06, 2016 11:16 am

This would be great if it can do a smooth framerate with low latency.


Sent from my iPhone using Tapatalk
http://www.atemuser.com
if it was easy it wouldn't be called engineering
Offline

Evan Daum

  • Posts: 250
  • Joined: Fri Jan 03, 2014 4:26 am

Re: Software Based Scan Converter for BMD devices - SDI Out

PostWed Jul 06, 2016 2:52 pm

I like the idea of displaying a single application. Does this extend the desktop or only mirror / partial mirror?
Offline

Peter Aellig

  • Posts: 14
  • Joined: Mon Jul 20, 2015 12:50 pm

Re: Software Based Scan Converter for BMD devices - SDI Out

PostWed Jul 06, 2016 7:31 pm

if it would extend as second screen and or i can choose parts of both, i would buy it immediately!
Offline
User avatar

Tom_Bassford

  • Posts: 1606
  • Joined: Wed Aug 22, 2012 8:12 am
  • Location: Europe / UK

Re: Software Based Scan Converter for BMD devices - SDI Out

PostWed Jul 06, 2016 8:37 pm

Syphon support would be cool too ;)


Sent from my iPhone using Tapatalk
http://www.atemuser.com
if it was easy it wouldn't be called engineering
Offline

GallerySienna

  • Posts: 54
  • Joined: Sun Jan 06, 2013 10:00 pm
  • Real Name: Mark Gilbert

Re: Software Based Scan Converter for BMD devices - SDI Out

PostThu Jul 07, 2016 8:57 am

Evan Daum wrote:I like the idea of displaying a single application. Does this extend the desktop or only mirror / partial mirror?


In Window mode It basically pulls the content of the window out of the display system. This even shows window content when the window is covered up.

However, in window mode, certain types of content don't show up - for example hardware accelerated video. So, there is the display mode where you show the screen, or a cropped area of it, and that does include the hardware accelerated portion but depends on that part of the window being visible.
Offline

GallerySienna

  • Posts: 54
  • Joined: Sun Jan 06, 2013 10:00 pm
  • Real Name: Mark Gilbert

Re: Software Based Scan Converter for BMD devices - SDI Out

PostThu Jul 07, 2016 8:59 am

Peter Aellig wrote:if it would extend as second screen and or i can choose parts of both, i would buy it immediately!


It doesn't extend the screen area. I haven't tried showing a window which is across multiple displays, but I suspect it wouldn't work. Will give that a try today.
Offline

GallerySienna

  • Posts: 54
  • Joined: Sun Jan 06, 2013 10:00 pm
  • Real Name: Mark Gilbert

Re: Software Based Scan Converter for BMD devices - SDI Out

PostThu Jul 07, 2016 9:02 am

Tom_Bassford wrote:This would be great if it can do a smooth framerate with low latency.


Latency is low. Will do some tests on Framerate, but it depends alot on the power of the computer and (I suspect) the performance of the graphics card, plus how big an area you are pulling from the display system.

Perhaps we will make a demo version next week so you can give it a try.
Offline

Tad Errey

  • Posts: 8
  • Joined: Fri Nov 02, 2012 3:28 am
  • Location: Melbourne, Australia

Re: Software Based Scan Converter for BMD devices - SDI Out

PostWed Aug 03, 2016 1:47 pm

Very interesting product.

I think the holy grail here would be if you can get Powerpoint / Keynote to give you the necessary opacity information to create the alpha key. I'm happy to use HDMI out for my fill, but to have the key on an accompanying SDI output would be next-level. It would also make your product very competitive as clients wouldn't need packages like ProPresenter and its expensive alpha-keyer module (I mean no disrespect to RenewedVision here - sometimes you just want keyed text without all the rest!).

It also means you could use more affordable single channel SDI output devices such as the Mini Monitor.

I realise that assumes there is something in how Powerpoint / Keynote displays transparency that your software/driver could read, which may well not be the case.

Definitely worth looking in to, if you haven't already.
Offline

GallerySienna

  • Posts: 54
  • Joined: Sun Jan 06, 2013 10:00 pm
  • Real Name: Mark Gilbert

Re: Software Based Scan Converter for BMD devices - SDI Out

PostMon Jan 22, 2018 1:47 pm

For anyone interested in Sienna's SDI ScanConverter, the price has just been reduced on the app store to $45 USD. There is a demo version at the website http://www.sienna-tv.com/ndi/sdi-scanconverter.html:

Return to Off-Topic

Who is online

Users browsing this forum: No registered users and 0 guests