HD to SD conversion “flicker free” with DaVinci?

[Margus Voll]

Hi there.

There is really nice plugin for fcp for that.

I would output sd from Resolve and apply that plugin on fcp.
BM could comment if they do calculation like that on down scaling process.
It would be really nice to have this option in Resolve itself.

https://www.mattias.nu/plugins/

In fcp it is named Reduce interlace flicker.

—

Margus

https://iconstudios.eu

[Uli Plank]

IMHO BM does a pretty good downconversion in their hardware.

Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

[Ola Haldor voll]

Thanks guys.

I’ll look into that plug-in, even though I’m a sceptic until it’s proven it can do the job.

I was in touch with the HQ a bit south of here, and will be getting a PAL CRT with SDI input to double check things. I just wish I could have separate output settings for SDI A and B out of the Decklink HD Extreme 3D card…. HD on one, SD on the other..

[Ola Haldor voll]

Nevermind. It actually DOES output different on A and B bus. I just haven’t figured it out until now. The day is saved!

Thank you, BMD!

[Gabriele Turchi]

ola ,
do you need realtime downconversion or by render?

the realtime downconversion by the BM card should not be high quality …i mean , decks or teranex box should do high quality job … but i am wondering how is considered the algorithm of resolve for render out SD….(i never did some tests )

g

[Ola Haldor voll]

I don’t need it to look good for the real-time playback. I need good quality downconversion from render.
If Resolve doesn’t do the job well, we’ll need to render HD and send it to the broadcaster for downconversion, and then bring it to the OB truck.

So for everyones convenience, I hope Resolve does the trick.

[Uli Plank]

OK, hardware downscaling by BM is not the best in the world, I admit. But apart from specialized hardware like Teranex, what you can use is one of the converter boxes by AJA, their scaling is really good.

Since we can’t get AJA I/O card support under Resolve (yet?), the HD10MD3 would be an option.

Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

[Gabriele Turchi]

mmm…even the aja box are not that good…

does anyone know how good is the downconversion software algorithm of resolve ?

g

[Ola Haldor voll]

Biggest problem is that delivery from the retailer to my town usually is about two days. Minimum. The job has to be done by wednesday or else there’s no point I should hassle with downscaling. I’d also need some sort of a recorder anyway.

I have a Mac Pro with a Decklink HD Extreme 2 in the same office. Hmm.. wonder if that could do some black magic and make a nice downscale for us.. Playout from DaVinci -> SDI -> Record on Mac Pro #2..

[Nate Weaver]

“I know for a fact that Compressor doesn’t do a good job. Thin lines and fine details will flicker, and it will be kind of jumpy in “crash pans” or fast motions.”

If you’re seeing “jumpy” in pans, you have a framerate conversion issue in your downconvert.

Given all the accelerated hardware at Resolves disposal, I’d be very surprised if between the two scaling algorithms, and a point here or there on the blur panel as a track node, you couldn’t get a very high quality down convert.

Nate Weaver
Director/D.P., Los Angeles
https://www.nateweaver.net