Force Render at DVinfo.net

Paul Curtis · June 14th, 2010, 07:58 AM

Occasionally despite the yellow bar i get stuttering playback and would like to render those sections.

Aside from sticking an effect on it is there an easy/official way to force a render of a section?

It also begs the question *how* does PPro determine that there's a yellow bar?

cheers
paul

David Dwyer · June 14th, 2010, 10:08 AM

Press the "Enter" Key when you have clicked on the timeline.

Paul Curtis · June 14th, 2010, 10:12 AM

If only it was that simple!

Because the line is yellow PPro assumes no rendering is needed so will go ahead and play then stutter. Am i the only one seeing this?

If i add a filter so the line goes red then that will *force* a render before preview, but i assume this is possible without dropping an uneeded filter on the line.

When people see Yellow does it *always* playback perfectly?

cheers
paul

David Dwyer · June 14th, 2010, 10:13 AM

Ah,

CS4 or CS5?

Mine plays fine. What is your source footage and PC spec?

Paul Curtis · June 14th, 2010, 10:16 AM

CS5, source is a variety - XDCAM, H264 and Cineform. There's a couple of places with layers and a transition that PPro reckons is yellow but playback causes stuttering and chokes up the timeline afterwards as well. I have some ongoing problems with cineform that may be causing this but a simple force render would be nice.

It's a quad core with striped array, it ought to be okay...

How is the yellow determined? PPro must decide somehow but it wouldn't know your datarates so how can it determine real time playback?

David Dwyer · June 14th, 2010, 10:19 AM

Try dropping your preview quality down to half or quarter res if not down already? My i7 with Mercury Playback Enabled didn’t like full res.

Do you have a Nvidia GFX with more than 765MB of VRAM? for MPE?

Harm Millaard · June 14th, 2010, 12:17 PM

Sequence / Render Entire Work Area

Paul Curtis · June 14th, 2010, 01:00 PM

David,

yes it's a 1GB 285 GTX bought especially for this. I don't believe that makes much difference, i think this issue is overall throughput. even if you have half res the source files are decoded at maximum res (i'd assume)

Harm,

One of those Doh moments for me, yes that does the trick... Many thanks!

I'd still love to know whether i'm seeing normal performance or whether i have a bottleneck somewhere.

cheers
paul

Scott Cassie · June 14th, 2010, 02:35 PM

Are you using a Raid? If not, then it could be that your hard drive is struggling to play the footage hence the stutter. Doesn't sound like it is a GPU or mercury engine issue. Could also be down to how much RAM you have?

Paul Curtis · June 14th, 2010, 03:19 PM

I'm running scratch discs with RAID 0 and also have 8GB, i don't think that's the bottle neck but you never know. I may clean the raid up as there's some random stuff dumped on it.

thanks
paul

June 14th, 2010, 07:58 AM	#1
Paul Curtis Major Player Join Date: Mar 2005 Location: canterbury Posts: 411	Force Render Occasionally despite the yellow bar i get stuttering playback and would like to render those sections. Aside from sticking an effect on it is there an easy/official way to force a render of a section? It also begs the question how does PPro determine that there's a yellow bar? cheers paul

June 14th, 2010, 10:08 AM	#2
David Dwyer Major Player Join Date: Jan 2006 Location: Chester, North West Posts: 565	Press the "Enter" Key when you have clicked on the timeline.

June 14th, 2010, 10:12 AM	#3
Paul Curtis Major Player Join Date: Mar 2005 Location: canterbury Posts: 411	If only it was that simple! Because the line is yellow PPro assumes no rendering is needed so will go ahead and play then stutter. Am i the only one seeing this? If i add a filter so the line goes red then that will force a render before preview, but i assume this is possible without dropping an uneeded filter on the line. When people see Yellow does it always playback perfectly? cheers paul

June 14th, 2010, 10:13 AM	#4
David Dwyer Major Player Join Date: Jan 2006 Location: Chester, North West Posts: 565	Ah, CS4 or CS5? Mine plays fine. What is your source footage and PC spec?

June 14th, 2010, 10:16 AM	#5
Paul Curtis Major Player Join Date: Mar 2005 Location: canterbury Posts: 411	CS5, source is a variety - XDCAM, H264 and Cineform. There's a couple of places with layers and a transition that PPro reckons is yellow but playback causes stuttering and chokes up the timeline afterwards as well. I have some ongoing problems with cineform that may be causing this but a simple force render would be nice. It's a quad core with striped array, it ought to be okay... How is the yellow determined? PPro must decide somehow but it wouldn't know your datarates so how can it determine real time playback?

June 14th, 2010, 10:19 AM	#6
David Dwyer Major Player Join Date: Jan 2006 Location: Chester, North West Posts: 565	Try dropping your preview quality down to half or quarter res if not down already? My i7 with Mercury Playback Enabled didn’t like full res. Do you have a Nvidia GFX with more than 765MB of VRAM? for MPE?

June 14th, 2010, 12:17 PM	#7
Harm Millaard Trustee Join Date: Aug 2006 Location: Rotterdam, Netherlands Posts: 1,832	Sequence / Render Entire Work Area

June 14th, 2010, 01:00 PM	#8
Paul Curtis Major Player Join Date: Mar 2005 Location: canterbury Posts: 411	David, yes it's a 1GB 285 GTX bought especially for this. I don't believe that makes much difference, i think this issue is overall throughput. even if you have half res the source files are decoded at maximum res (i'd assume) Harm, One of those Doh moments for me, yes that does the trick... Many thanks! I'd still love to know whether i'm seeing normal performance or whether i have a bottleneck somewhere. cheers paul

June 14th, 2010, 02:35 PM	#9
Scott Cassie Regular Crew Join Date: Apr 2008 Location: Peterhead, Scotland Posts: 35	Are you using a Raid? If not, then it could be that your hard drive is struggling to play the footage hence the stutter. Doesn't sound like it is a GPU or mercury engine issue. Could also be down to how much RAM you have?

June 14th, 2010, 03:19 PM	#10
Paul Curtis Major Player Join Date: Mar 2005 Location: canterbury Posts: 411	I'm running scratch discs with RAID 0 and also have 8GB, i don't think that's the bottle neck but you never know. I may clean the raid up as there's some random stuff dumped on it. thanks paul