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Optimizing for multicam

Explorer ,
Sep 03, 2018 Sep 03, 2018

Can anyone direct me to some information for optimizing hardware/software for the best multicam editing performance?

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Explorer ,
Sep 03, 2018 Sep 03, 2018

mainly a good Nvidia card. otherwise, everything you would normally need for good playback and functionality like lots of cores and RAM. it helps if the various cameras are the same format and frame rate etc but not necessary. if playback is not smooth then go down to 1/2 or 1/4 quality. I can do at least 4 HD cameras smoothly at full quality, and sometimes more than that. I had 1 project with 9 cameras and that was tough.

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LEGEND ,
Sep 04, 2018 Sep 04, 2018

Be sure to use Cineform proxies.

Work offline using proxy media |

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New Here ,
Sep 04, 2018 Sep 04, 2018

Jim makes a great point - if your computer can't keep up, then just make proxies. once they're rendered, it's very easy to turn them on and off.

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Explorer ,
Sep 04, 2018 Sep 04, 2018

Creating proxies to try (6 x 1 hour clips - it'll be a while).

Jim - In what situations would you NOT want proxies on?

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LEGEND ,
Sep 04, 2018 Sep 04, 2018

Using ProRes, DNx or Cineform originals.  Other than that...proxies!

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Explorer ,
Sep 04, 2018 Sep 04, 2018

So if I re-rendered (transcoded?) the originals to those formats you mentioned, could I skip proxies and enjoy stutter-free multicam editing?

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LEGEND ,
Sep 04, 2018 Sep 04, 2018

if I re-rendered (transcoded?) the originals to those formats you mentioned, could I skip proxies and enjoy stutter-free multicam editing?

For HD, probably.  But 4K files can be demanding, even when they're ProRes or DNx.

Cineform proxies don't have that issue.

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Community Expert ,
Sep 04, 2018 Sep 04, 2018

To add to Jim Simon's suggestion, here are some suggested hardware :

https://www.pugetsystems.com/recommended/Recommended-Systems-for-Adobe-Premiere-Pro-CC-143

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Explorer ,
Sep 04, 2018 Sep 04, 2018

Great info Carlos!  I purchased my workstation last year and I see I've got some room for improvement.

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Community Expert ,
Sep 04, 2018 Sep 04, 2018

great ! good luck then ...

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Explorer ,
Sep 04, 2018 Sep 04, 2018

Hmm...  Not much difference with the proxies.  Perhaps I should encode these HD MPEGs to ProRes and start over?  And why don't I see ProRes as a format in Media Encoder?  Is that a Mac format?  (I'm using Windows)

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LEGEND ,
Sep 04, 2018 Sep 04, 2018

The Windows version can play ProRes files, it just can't make them.

If you're not seeing improvement with Cineform proxies, and assuming proxies are turned on, then you need faster hardware.

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Explorer ,
Sep 05, 2018 Sep 05, 2018

I'm sure you're right Jim.  Another thing that might also be contributing to this is that I'm trying to edit multicam with painfully long clips (1 hour each).  Since it's a band performance I'm going to try prepping individual songs by converting them all to DNx files with proxies and see what happens there.  If that don't work...  I'll be off to the computer store to soup up the rig sooner rather than later.

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LEGEND ,
Sep 05, 2018 Sep 05, 2018

The clip duration won't be a factor in playback performance.

Ideally you would have recorded the entire concert as one clip per camera, without turning the cameras on and off.  Convert those original long clips to Cineform proxies as a first step.  Create the multicam as a second step using the process below.

Manual Multi-Camera Method

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Explorer ,
Sep 05, 2018 Sep 05, 2018

I'm going to give it a try anyway.  It can't hurt anything.  The funny thing here is that prior to the most recent Premiere update, everything was moving along swimmingly.  6 x 1 hour clips synced from the source clips to a master audio track as matched source .MPEGS.  I was able to edit all 6 cameras smoothly @ 1/2 resolution.  Immediately after the update, Premiere was complaining that it no longer supported Quicktime (.MOV) files, which cleared up on its own(?) after a couple of frustrating days - (all my MPEG videos went offline, I'm suspecting because they originated as .MOV files) - BUT...  Then my multicam editing started stuttering.  I managed to get 3 clips edited prior to this mishap.  So now I'm willing to try anything short of hiring psychics to make it work.  A good time to experiment for a little bit.

I'm using an i7 with an SSD but I'll likely need to add more RAM.  But I still can't figure out why the heck it went so bad after the update. 😞

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Explorer ,
Sep 05, 2018 Sep 05, 2018

Jim_Simon  wrote

The Windows version can play ProRes files, it just can't make them.

If you're not seeing improvement with Cineform proxies, and assuming proxies are turned on, then you need faster hardware.

One thing you want to watch is your hard drive throughput.

If you have 6 clips that are 50Mbps, that's 300Mbps of required bandwidth.

Aside from that, if it's a mechanical drive, you have head/platter movement to contend with.

Six files means that the drive could be doing a lot of back-and-forth movement.

I found that out, working on a video wall (36 video clips).

JJ

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Explorer ,
Sep 05, 2018 Sep 05, 2018

Thanks Jim - I'm using a solid state drive.  The clips are currently rendering DNx to about 6GB each so I think the drive should be able to handle that.

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Explorer ,
Sep 17, 2018 Sep 17, 2018
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Heh...  I installed 64GB of RAM and the original videos still stutter.  In fact, I think it's worse.  I'm thinking about adding a 2nd SSHD so I have room for the huge DNx files and maybe hire those psychics.  What on earth did Adobe's update do?

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