Replies – Forums – Pat Horridge – Page 14

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Pat Horridge
September 24, 2019 at 7:19 am in reply to: Color Space 4:2:0

Work in 4:2:2 and output in 4:2:2 as a master file.
Then convert that to the required codec that will allow you 4:2:0 colour subsampling

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
September 24, 2019 at 7:17 am in reply to: Drop Frames in Premiere with good PC. What is happening ?

As already mentioned you need to calculate the drive speed required to pull that data off your drives. UHD (its not actually 4K its UHD) is 4 times the bandwidth of HD and at 60P that’s double 29.97fps so you are asking for 8 times the media to move from the drive for a single stream of video have a dissolve and that’s 16 times the data bandwidth.

Then that’s coupled with needing to decode MP4 in real time. To playback and do any sort of effect you have to decode the heavily compressed MP4 to uncompressed media then do the colour correction calculations and then render up the result for realtime playback.
You didn’t mention you Graphics GPU choices and these would need to be matched to work best with Premiere and take as much of the workload away from the CPU.

All of which is a very tall order. To edit in realtime at that sort of quality is going to need a much higher spec setup.

And that’s why people don’t really work that way. and why offline online was created.

Batch transcode to an editable quality is often done on a second lesser machine in parallel with the edit starting. That can make viewable outputs for approval

The final online is only the media needed so transcoding from MP4 to a workable edit codec like ProRes or DNxHR isn’t much work at all.

Or transcode to an editable codec early on and direct online.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
September 15, 2019 at 5:26 am in reply to: 1080×1080 Video is distored in VLC Player

Use mediainfo to compare the properties of both files. But sounds like a VLC bug.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
September 10, 2019 at 4:03 pm in reply to: AVID Filler is garbage and not black

To be safe. Uninstall MC.
Delete a the MC folders in Progam files and common.
The restart and the install.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
September 10, 2019 at 6:55 am in reply to: AVID Filler is garbage and not black

Filler as well as the media offline slates are stored in a separate internal media database for all the supported resolutions.
Sounds like a corrupt database file or black media file.
I’d try an uninstall. Clean out and re install.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
August 26, 2019 at 8:22 am in reply to: Need 4K storage suggestions Windows users

You need to do the maths.
What’s the sustained data rate of your Raid 5 proposed setup (best to configure it and test. Or check manufacturers stated spec)
What’s the data rate of you media.
How many real time streams will you need (at least 2 but possibly more if you are doing effects)
Add 20% or so overhead.

I’d not use Raid 5 Raid 1 or 10

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
August 18, 2019 at 7:33 am in reply to: 4:3 Short film with hard coded subtitles gets cropped out when rendering out to DCP

Pad the sides of the source DSM file with black back out to 2K width.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
August 4, 2019 at 8:03 am in reply to: 4K transcode settings for a 1080 project

I’d crop the 4K to 16:9 to avoid scaling the source. The conversion down to 1080 is then exactly 1/4
But beware a lot of 4K drone footage can look pretty crap at 1080

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
July 30, 2019 at 6:03 am in reply to: mounting AVID drives and tapes

Bob I suspect your pulling our chain ☺
And yes the tape is probably fine but it’s before LTFS so you need to know what backup software was used and if there is a current restore installer available.
Once you solve the SCSI to Thunderbolt issue.
More hope on a PC

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk
Pat Horridge
July 20, 2019 at 8:26 am in reply to: Using a cabled network in Avid MC

I’ve done this but as Shane says you need a full blown server to access the drives and mount them so they appear as local drives.
But why use MC to just play files.?
Plenty of NAS units that can stream media and smart TVs that can access and play them.

Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk

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