Thursday, February 19, 2015

Re: [Avid-L2] Re: Practical Solution to Hulu Rejection of random Cadence?

 

I agree reverse telecine is what needs to be done on random cadence shots but given the issues some are describing with how well reverse telecine can be done with hardware/software would a deinterlace just make it somewhat progressive at 30 frames and shut Hulu up?  I know it's not ideal but if with deinterlacing all the split frames were removed, halving the vertical resolution in the process, wouldn't that make it easier for Hulu to compress it as 29.97P and eliminate most of the artifacts they may be seeing with the random cadence they are not willing to deal with so far?  I'm just trying to get the train wreck through the station with a minimum of damage.  And in light of Oliver's post I think this is a big waste of time that they should be dealing with no us.



---In avid-l2@yahoogroups.com, <bogdan_grigorescu@...> wrote :

de-interlace doesn't work here - you need inverse telecine/pulldown removal

cheers,
BG


From: "bigfish@... [Avid-L2]" <Avid-L2@yahoogroups.com>
To: Avid-L2@yahoogroups.com
Sent: Thursday, February 19, 2015 12:56 PM
Subject: [Avid-L2] Re: Practical Solution to Hulu Rejection of random Cadence?

 
What about a hardware pass that just deinterlaces the whole show.  Sure there might be some occasional duplicate frames but it would alleviate any split frames and more or less stabilize the  random cadence.  I don't know how you fix everything at this stage with all the motion speed ramps etc...




---In avid-l2@yahoogroups.com, <oliverpeters@...> wrote :

First of all, that's utterly insane that it was rejected. Absolutely every filmed TV show done up until most of us started editing in native 24p was a 29.97 interlaced SD show with mixed cadence. The film was telecined with pulldown to transfer masters, from which the show was edited. Therefore, every one of these SD shows has inconsistent pulldown. There's nothing wrong with it if the master is intended to be 1080i or 525i.

Obviously network QC is what it is and they are probably concerned about compression for crappy streaming over the web. Hardware is your best and maybe only option. I believe Teranex will make the adjustments by converting back to 24 internally and then re-applying pulldown. I'm not sure how well it deals with a mix that might include actually 29.97i video content along with the 23.976+3:2. I'm also not sure how well this works with the newer BMD Teranex units. The last time I had to work with one of these was one of their Image Restore boxes back when they were their own company. This may cause some analogies at cuts.

Another way - if it is all 24p original from some source - is to fix it in Media Composer, but you will have to go shot-by-shot. This would get you back to 24fps and then generate an interlaced master with consistent cadence from there. Or just deliver 24p if they take that.

- Oliver


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