Please make SDI out interlaced switchable

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Cam Macduff

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Please make SDI out interlaced switchable

PostThu Apr 25, 2013 9:26 pm

The new firmware means the SDI feed out is interlaced at 25 frames per.
I want it to be progressive.
Please make it switchable!
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Manu Gil

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Re: Please make SDI out interlaced switchable

PostThu Apr 25, 2013 10:04 pm

+1 :D
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Aaron Scheiner

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Re: Please make SDI out interlaced switchable

PostThu Apr 25, 2013 10:29 pm

+1 (triple Shuttle owner, triple BMCC owner)
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Tobias Castorph

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Re: Please make SDI out interlaced switchable

PostThu Apr 25, 2013 11:20 pm

+1

for us working in Europe would be great!
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Thomas Schumacher

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Re: Please make SDI out interlaced switchable

PostFri Apr 26, 2013 12:21 am

+1

and +1000 for all the others in Europe still waiting ...
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Cam Macduff

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Re: Please make SDI out interlaced switchable

PostSat Apr 27, 2013 9:37 am

Reading another thread it sounds like the interlaced output is PsF.
Can anyone at BM confirm?
That would make this request redundant...
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Aaron Scheiner

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Re: Please make SDI out interlaced switchable

PostSat Apr 27, 2013 11:10 am

Compression on PsF is less efficient than pure progressive. PsF also needs to be de-interlaced at some point, which granted isn't as complex as true interlaced, but if done incorrectly can result in quality loss and additional processing time. Switchability would also improve monitor compatibility ?
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Nick Shaw

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Re: Please make SDI out interlaced switchable

PostSat Apr 27, 2013 11:36 am

Aaron Scheiner wrote:PsF also needs to be de-interlaced at some point, which granted isn't as complex as true interlaced, but if done incorrectly can result in quality loss and additional processing time.


PsF does not need to be de-interlaced. That is the point. Issues arise when something in the signal processing chain assumes the signal is actually interlaced, and unnecessarily de-interlaces it. And cheap de-interlacers just throw away one field, halving the vertical resolution.

Aaron Scheiner wrote:Switchability would also improve monitor compatibility ?

I am aware of monitors which support interlaced but not progressive, but not any which support progressive but not interlaced. So I would think the addition of PsF increases the range of monitors which can be used, not decreases it.

All that said, a software switch would give options, and that is a good thing.
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Aaron Scheiner

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Re: Please make SDI out interlaced switchable

PostSat Apr 27, 2013 3:49 pm

Ironically two of the monitors I'm intending on using on Monday with these cameras only support the PsF modes introduced with the 1.3 firmware :P so the changes are quite useful.

Still... it'd be nice if it's switchable in a future update for recording purposes.
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Cam Macduff

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Re: Please make SDI out interlaced switchable

PostSun Apr 28, 2013 11:44 am

Nick Shaw wrote:All that said, a software switch would give options, and that is a good thing.


Good point, not to mention that a switch is dead simple.

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