Sony FS7 MXF drop out at cut in point

Get answers to your questions about color grading, editing and finishing with DaVinci Resolve.
  • Author
  • Message
Offline

Margus Voll

  • Posts: 1066
  • Joined: Wed Aug 22, 2012 10:31 am
  • Location: Tallinn, Estonia

Sony FS7 MXF drop out at cut in point

PostSat Nov 10, 2018 11:35 am

Hi.

I work now on TV show where some material is shot with subject.
I get on every delivery render at least 1-5 dropouts on cut points.

Local.GPUPinnedHost.Enable = 0 does not help much.

Here is the screenshot i usually see. Patern might be different but it still is broken.

https://www.dropbox.com/s/8a4yz55x8x66i ... t.jpg?dl=0

Is there any way to fight it somehow ?

Win 10 Pro, i9, dual Titan Pascal, latest Resolve version 15.1.2.008
UHD timeline or HD timeline give the same results.
Margus Voll, C.S.I.

http://www.iconstudios.eu
margus@iconstudios.eu
Insta / Twitter @margusvoll

Resolve 15 W10 (i9-7940x 14c OC @4.4 Ghz, 2x Titan Pascal, 128 gb ram)
Resolve 12.5.4 OSX
BMC 2,5 K
Pocket camera
Offline

Seth Goldin

  • Posts: 358
  • Joined: Wed Nov 04, 2015 7:43 pm

Re: Sony FS7 MXF drop out at cut in point

PostSat Nov 10, 2018 4:34 pm

It happens to us occasionally, and has for a long time. I’ve been fighting the bug for years. I think it has something to do with how Resolve reads the XAVC-I footage.

I’ve seen it happen on an NVIDIA 9-series TITAN X on a MacPro5,1, dual AMD FirePros on a MacPro6,1, as well as a NVIDIA 1080 Tis on HP Z8s running either Windows or Linux.

Usually on the Z8s, if we’re still just scrubbing through the Color page, grabbing the playhead and scrubbing back over the problem area, forcing Resolve to read the file from disk again, we can get the correct frame.

However, if you’re running into the problem during renders, my bulletproof workaround is to just cache the source [now “Fusion page output” in 15] to a good DI format. On a Mac, use ProRes 4444, or on Windows or Linux, use DNxHR RGB 444, and check the option to used those render cached images on the Deliver page.


Sent from my iPhone using Tapatalk
DaVinci Resolve Studio 15.2.0.033
CentOS Linux 7.3 [Blackmagic Design custom ISO]
Windows 10 Pro 1803 17134.376
HP Z8 G4
1x Intel® Xeon® Gold 6136
48 GB (6x8 GB) DDR4-2666 ECC Registered RAM
1x GeForce GTX 1080 Ti
Offline

Indigo Rebel

  • Posts: 17
  • Joined: Wed Oct 31, 2012 1:33 am
  • Real Name: Richard Lapthorn

Re: Sony FS7 MXF drop out at cut in point

PostSat Nov 10, 2018 8:08 pm

Yep, same thing here with FS7 footage; occasional green or purple flash frames. As Seth mentioned they can be got rid of fairly easily, but it is frustrating as we have to be constantly on the look out for them.
Hardware
Workstation 1 = Dual Hex core Xeon E5645 @ 2.4GHZ - 22 gig ram - GTX 970 - Sandisk Ultra II SSDs
Laptop = Dell XPS15 9560 - I7 6700HQ @ 2.6GHZ - 16 gig ram - GTX 960m - NVMe PM951 SSD
Software
Windows 10 - Resolve 15 - Fusion 9
www.indigorebel.com
Offline

Margus Voll

  • Posts: 1066
  • Joined: Wed Aug 22, 2012 10:31 am
  • Location: Tallinn, Estonia

Re: Sony FS7 MXF drop out at cut in point

PostSun Nov 11, 2018 2:14 pm

I do the cache render every time to be safe as it helps to eliminate those more.
Another way is to extend cut point under another shot and let cache re render that clip.

Loose so much time on long form work that is getting super annoying.
Margus Voll, C.S.I.

http://www.iconstudios.eu
margus@iconstudios.eu
Insta / Twitter @margusvoll

Resolve 15 W10 (i9-7940x 14c OC @4.4 Ghz, 2x Titan Pascal, 128 gb ram)
Resolve 12.5.4 OSX
BMC 2,5 K
Pocket camera

Return to DaVinci Resolve

Who is online

Users browsing this forum: Bearded_Lion, Michael de Meyer, Phil Side, roger.magnusson and 19 guests