Rendering time to Cineform intermediate? at DVinfo.net

Gian Pablo Villamil · April 26th, 2006, 07:40 PM

I have a fairly straightforward project, with a mask track and two source tracks, all in HDV format.

I am rendering to Cineform HDV intermediate - however, it seems to be taking over one hour to render 6 minutes of video.

Is this normal? What are typical HDV -> Cineform intermediate render times?

Steven Gotz · April 26th, 2006, 08:06 PM

It is very difficult to answer that question because some effects take a long time to render and some do not. Did you use the Cineform effects where available? That makes it faster I believe.

Richard Leadbetter · April 27th, 2006, 08:00 AM

Surely the editing system's CPU, memory and hard disk configuration would also have an impact on the time an export will take?

Steven Gotz · April 27th, 2006, 08:38 AM

Sure. That makes a huge difference as well.

David Newman · April 27th, 2006, 09:21 AM

Typically we are one of the faster formats to export to, so the sounds like a old system or some heavy effects on that timeline.

Gian Pablo Villamil · April 27th, 2006, 09:22 AM

Well, I'm using AMD Athlon 64 X2 (4400), on a system with 2GB RAM and 2 SATA II drives internally. Generally, rendering to MPEG2 from HDV on this system is usually about 4x playtime of the final video.

What should a straight-across transcode of HDV to Cineform take (roughly)?

David Newman · April 27th, 2006, 09:26 AM

Quote:

Originally Posted by Gian Pablo Villamil

What should a straight-across transcode of HDV to Cineform take (roughly)?

Using HDLink to do the conversion on a PC like yours, near 1:1 real-time. We have a very fast encoder (threaded for as many cores available.)

Steven Gotz · April 27th, 2006, 09:42 AM

I have a much slower system. Only 3.06GHz with 1.5G RAM.

I created a new project and put a few Cineform AVIs on the sequence in Premiere Pro 2.0 with the latest Aspect HD (not the beta) totalling 2 minutes. (00;02;00;03 drop frame)

I didn't add it to the project, and I didn't embed the project. I did export the audio. There were no transitions or any effects applied at all, so no red line to eliminate with a render.

I used the Cineform HD Export and unchecked Recompress. I did not Optimize Stills.

3600 frames rendered out to a new movie in 6:18 - or a little over 3X realtime. Not too shabby. Although I have to wonder what is happening other than just stitching the clips together? Why not a lot closer to realtime?

Gian Pablo Villamil · April 27th, 2006, 05:30 PM

Yep, my results are comparable. A much simpler 50 second clip, with only a crop operation applied, took 3 minutes to render.

Michael May · May 15th, 2006, 04:17 AM

This maybe a shot in the dark, but...When you render, did you accidentally uncheck the render loop region only box? I've done that before and which resulted in long render times. I have a 3ghz/1gb RAM/dedicated video drive machine and it takes 5-6x realtime for render. The only effect I have used that takes so long is Magic Bullet.

April 26th, 2006, 07:40 PM	#1
Gian Pablo Villamil Regular Crew Join Date: Mar 2006 Location: New York, NY Posts: 138	Rendering time to Cineform intermediate? I have a fairly straightforward project, with a mask track and two source tracks, all in HDV format. I am rendering to Cineform HDV intermediate - however, it seems to be taking over one hour to render 6 minutes of video. Is this normal? What are typical HDV -> Cineform intermediate render times?

April 26th, 2006, 08:06 PM	#2
Steven Gotz Trustee Join Date: May 2002 Location: Clermont, FL Posts: 1,520	It is very difficult to answer that question because some effects take a long time to render and some do not. Did you use the Cineform effects where available? That makes it faster I believe. __________________ Steven Gotz http://www.stevengotz.com

April 27th, 2006, 08:00 AM	#3
Richard Leadbetter Major Player Join Date: Dec 2005 Posts: 323	Surely the editing system's CPU, memory and hard disk configuration would also have an impact on the time an export will take? __________________ Company Website: Digital Foundry Ltd Video Games HD Blog: Digital Foundry@Eurogamer

April 27th, 2006, 08:38 AM	#4
Steven Gotz Trustee Join Date: May 2002 Location: Clermont, FL Posts: 1,520	Sure. That makes a huge difference as well. __________________ Steven Gotz http://www.stevengotz.com

April 27th, 2006, 09:21 AM	#5
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	Typically we are one of the faster formats to export to, so the sounds like a old system or some heavy effects on that timeline. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

April 27th, 2006, 09:22 AM	#6
Gian Pablo Villamil Regular Crew Join Date: Mar 2006 Location: New York, NY Posts: 138	Well, I'm using AMD Athlon 64 X2 (4400), on a system with 2GB RAM and 2 SATA II drives internally. Generally, rendering to MPEG2 from HDV on this system is usually about 4x playtime of the final video. What should a straight-across transcode of HDV to Cineform take (roughly)?

April 27th, 2006, 09:42 AM	#8
Steven Gotz Trustee Join Date: May 2002 Location: Clermont, FL Posts: 1,520	I have a much slower system. Only 3.06GHz with 1.5G RAM. I created a new project and put a few Cineform AVIs on the sequence in Premiere Pro 2.0 with the latest Aspect HD (not the beta) totalling 2 minutes. (00;02;00;03 drop frame) I didn't add it to the project, and I didn't embed the project. I did export the audio. There were no transitions or any effects applied at all, so no red line to eliminate with a render. I used the Cineform HD Export and unchecked Recompress. I did not Optimize Stills. 3600 frames rendered out to a new movie in 6:18 - or a little over 3X realtime. Not too shabby. Although I have to wonder what is happening other than just stitching the clips together? Why not a lot closer to realtime? __________________ Steven Gotz http://www.stevengotz.com

April 27th, 2006, 05:30 PM	#9
Gian Pablo Villamil Regular Crew Join Date: Mar 2006 Location: New York, NY Posts: 138	Yep, my results are comparable. A much simpler 50 second clip, with only a crop operation applied, took 3 minutes to render.

May 15th, 2006, 04:17 AM	#10
Michael May New Boot Join Date: Jan 2006 Location: North Texas Posts: 23	long rendering times This maybe a shot in the dark, but...When you render, did you accidentally uncheck the render loop region only box? I've done that before and which resulted in long render times. I have a 3ghz/1gb RAM/dedicated video drive machine and it takes 5-6x realtime for render. The only effect I have used that takes so long is Magic Bullet.