Monday, April 23, 2012

Re: [Avid-L2] 2 hours to transcode 2 Red 13 minute clips to 10:1 mxf?

 

Hi John, see my answers below:

1. You choose the debayer settings within your Avid app: Settings>Media Creation>Mixdown and transcode>R3D Source Quality
2. It defaults to Full, which leads to the slowest transcode. Decent quality at Half Best/Half Good, especially for offline. In your case, at 10:1 resolution, you can go with Quarter debayer, with an significantly improved speed - faster than realtime
3. RedCineX could be faster as it is multithreaded(will use all available cores), but only for batches of clips. You need to set it properly in order to keep the CPUs busy(avoid starvation). For single clips it is no faster than Avid
4. I believe there was some transcoding optimization in MC6(as compared to 5/5.5), so if you're not on that version, you may want to try it before the show starts.
5. As others mentioned, if turnaround is time sensitive, you either get a a Rocket card(can be had as 'battle tested' or refurb for around 3K), or distribute the workload to multiple transcoding rigs (easier in a Unity environment)

cheers,
BG

www.finale.tv

--- On Mon, 4/23/12, John Moore <bigfish@pacbell.net> wrote:

From: John Moore <bigfish@pacbell.net>
Subject: [Avid-L2] 2 hours to transcode 2 Red 13 minute clips to 10:1 mxf?
To: "Avid L2" <Avid-L2@yahoogroups.com>
Date: Monday, April 23, 2012, 8:54 PM

 

As we begin testing the Red workflow they shot 2 13 minute clips which are now being transcoded to 10:1M mxf which is our typical resolution for offline multicam.  It's taking about 2 hours on mc soft V 5.5 linking to the Red clips through ama and transcoding.  I don't know anything about what debayer setting etc... they chose.  Is two hours in the ball park for this process.  We have no Red Rocket etc...  Does Red CineX do a faster job?  Ultimately we would have roughly 15 hours of footage to process so this transcode time is going to add up pretty quick.  Also given we'll be shooting a live show running about 90 minutes does this create any issues with spanned clips when transcoding or linking to ama.  Just trying to see how much a a cluster flap this Red thing will be. 

John Moore

Barking Trout Productions

Studio City, CA

bigfish@pacbell.net

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