Ericbowen
Forum Replies Created
-
Aja does not mention 4K to 1080P conversion. Are you sure it will handle that scaling?
https://www.aja.com/en/products/kona-3g#techspecs
None of the Matrox devices handle 4K that I am aware of.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
-
Many of those factors described why Raid 5 fails are not controllable by the client even with the Raid Controller management. Raid 6 is able to repair the corrupt parity data which I have seen done where as raid 5 has not been able to for medium to severe occurrences. The over all results have been near full proof reliability for years on every raid 6 I have dealt with. I cant say how many Raid 5’s I have seen unravel on both OSX or Windows since I lost count years ago. The results speak for themselves. A Intel/LSI Raid Controller takes 5 to 6 hours to rebuild a 16TB 8 drive array. So even 32TB wont take more than 10 to 12 hours on 1 of those arrays. That is perfectly acceptable to rely on 1 level of parity until completed.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
Blackmagic does not give an option to Scale from 4K to 1080 with the latest driver I have seen. Blackmagic leaves it to the application to handle the scaling when drawing out before signal output. This is why AE and Davinci will scale the 4K output to any resolution you require. However Premiere will not currently do that or allow that via the software. Premiere relies on the Video driver to handle the scaling. So yes it does matter that TB is involved in this case because TB is essentially the Display out for the video card with Displayport packets.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
Raid 6 is far more reliable than raid 5 because the controller has 2 levels of parity to verify to. The problem with current drives failing over time is parity information can corrupt on 1 drive over time causing considerable damage to the raid integrity. It is not uncommon to lose a raid 5 array to corruption because of this. However raid 6 having that extra level of parity protects against that provided you have the parity verification scheduled periodically. It is extremely rare to have 2 discs corrupting over time especially in the same parity data regions. I have never seen a raid 6 completely unravel with NTFS as the file system. The worst I have seen on a raid 6 is a few files corrupted at most. Also the performance difference between a 8 Drive raid 5 and 8 drive raid 6 is 720MB/s for the R5 to 650MB/s for the raid 6. Not nearly enough to justify the greater chance in failure.
Raid 10 is block level mirroring and far more expensive than Raid 6 in amount of disks used. You can only verify the data of 1 mirror to another versus 2 levels of parity so verification is not nearly as good as Raid 6. The performance on 8 drive raid 10 would still be around the 8 drive raid 6 so there is no gain there. I do not suggest raid 10 unless dealing with massive disk arrays where failure rate is much larger over all and needs to be reduced to mirrored partner level percentages.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
Unless Something has changed, Premiere will not scale the video output on a I/O device whether TB or not. Premiere will only scale via the GPU. Since this is video out of the TB versus for the Display I am not sure of a way to convert this. Normally a HDMi to SDI converter would work but TB complicates this since it’s Displayport but via TB.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
As long as you burn the FX and changes into the frame with a lossless/uncompressed codec/format there shouldn’t be any reason that H264 profile at 5Mbit shouldn’t work fine to convert that burned media to delivery. I don’t see where your problem could be coming from the workflow itself.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
Media Express does not playback DNxHD that I am aware of unless they changed it and I missed it. Normally just Blackmagic’s codecs including mjpeg, DPX, DV, and maybe DVCPro HD although I think that is only with Premiere.
Do you mean the Blackmagic Control Panel in Windows Control panel? If so then that is greyed out of the Blackmagic hardware is not detected.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
The problem you run into here is less to do with hardware processing capability currently and more to do with the limitations of the software player processing that type of frame data when spanned to over 8K resolutions. The latency of that kind of pixel data processing is just to high often for realtime which is why you require nodes with separate player hosts to handle that which is what Walter is talking about. Essentially 8K is normally where the single system with 1 player host break point is though some can push to 12K.
Eric-ADK
Tech Manager
support@adkvideoediting.com -
What happens if you encode to Quicktime animation first and then H264 compress that file down to a stream rate?
Eric-ADK
Tech Manager
support@adkvideoediting.com