MLVFS in Resolve struggling to playback large MLVS 40GB+ is there a solution?

[erikbaldwinson]

MLVFS in Resolve on a Samsung M2 960Pro 1Tb and playback is great as long as the MLV file is SMALL (less than 20GB). As soon as I try to playback a 40GB+ file the playback is about 12FPS but the CPU is not working that hard, only 60-70% and plenty of memory available and not much drive traffic.

Any ideas on how to get MLVFS working great with large MLV files 40GB+??

I'm on Win7 64bit in Resolve 12 and 14 beta.

One workaround is to just record short files but this increases the post work flow because I have to sync up the H264s to get the audio (frame match with opacity and two layers)..

Is this possibly because of limited space on the OS drive?

[Brawl]

I'm not a developer but I can suggest you to ask your question also to Blackmagic: https://www.blackmagicdesign.com/support/contact/email

if possible write here their reply maybe this could help someone here to help you better. bye!

[Walter Schulz]

Maybe I have the opportunity to reproduce this. May I ask about GPU, CPU, RAM. RAMDisk or any other modifications?

[erikbaldwinson]

Maybe I have the opportunity to reproduce this. May I ask about GPU, CPU, RAM. RAMDisk or any other modifications?

GPU: NVIDIA GTX 970
CPU: INTEL i7-3770K @ 3.50GHz
RAM: 32GB (8gbx4) Corsair Vengeance @ 1600Mhz
Storage Drive: Samsung Pro 1TB M2 in PCI Express Port

I cloned windows to a 256GB Samsung 850 EVO to see if more space would help - it doesn't help.

[erikbaldwinson]

I'm not a developer but I can suggest you to ask your question also to Blackmagic: https://www.blackmagicdesign.com/support/contact/email

if possible write here their reply maybe this could help someone here to help you better. bye!

Davinci Resolve says it is playing back 23fps but it is clearly 8 or 12 or something. I don't think they will help. I think this is to do with MLVFS.

Can anyone confirm smooth playback of say a 20GB file in MLVFS in Resolve?

[Walter Schulz]

Storage Drive: Samsung Pro 1TB M2 in PCI Express Port

Please run CrystalDiskMark benchmark for this drive and post a screenshot.

[Brawl]

is your GPU 512MB of VRAM? because davinci resolve eats more read here: https://www.dcinema.me/davinci-resolve-system-requirements-a-reality-check/

[Walter Schulz]

AFAIK there is no 9700 GTX in Nvidia's lineup. Most likely GTX 970 ...
Don't expect  a 9700M or 9x00 GTX running with i7 and 32 GB.

[erikbaldwinson]

Please run CrystalDiskMark benchmark for this drive and post a screenshot.

GPU: NVIDIA GTX 970**
GPU has 4GB of VRAM
See Full Descript here: http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications

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Samsung 960PRO 1TB M2 in PCI Express Slot

1GB Test


32GB Test

[Walter Schulz]

GTX 970 can be a beast. Nvidia messed up and performance drops for some games are reported.
https://forums.geforce.com/default/topic/855174/geforce-900-series/all-gtx-970-msi-gigabyte-asus-have-some-problem-/post/4601330/#4601330
Absolutely no clue if this drop occurs with Resolve, too. Please ask in Davinci forum how well Resolve and 970 play together.

No GTX 970 at hand. Will try looking if scaling problems occur with my (aged) equipment.

[erikbaldwinson]

GTX 970 can be a beast. Nvidia messed up and performance drops for some games are reported.
https://forums.geforce.com/default/topic/855174/geforce-900-series/all-gtx-970-msi-gigabyte-asus-have-some-problem-/post/4601330/#4601330
Absolutely no clue if this drop occurs with Resolve, too. Please ask in Davinci forum how well Resolve and 970 play together.

No GTX 970 at hand. Will try looking if scaling problems occur with my (aged) equipment.

GPU load is very low playing back large or small files, less than 30%. And the memory being used is only 1GB.

So what you are saying is that file size is not the issue. You are confirming you can playback 10, 20, 40GB + files with MLVFS smoothly? Yes or no?

Installed Linux CentOS 7 with Resolve 14 and this seems to have resolved the playback of large files. There is now a short seek time of about 2secs with all files tho, any tips on improving that are welcome.

[erikbaldwinson]

GTX 970 can be a beast. Nvidia messed up and performance drops for some games are reported.
https://forums.geforce.com/default/topic/855174/geforce-900-series/all-gtx-970-msi-gigabyte-asus-have-some-problem-/post/4601330/#4601330
Absolutely no clue if this drop occurs with Resolve, too. Please ask in Davinci forum how well Resolve and 970 play together.

No GTX 970 at hand. Will try looking if scaling problems occur with my (aged) equipment.

This is not to do with the GTX 970 or likely gpu related. This is to do with MLVFS not negotiating lossless 12bit smoothly despite latest support.