HVX Footage in Finished to DVD at DVinfo.net

Michael Mills · March 27th, 2008, 10:04 AM

HVX 24p Post footage looks great on my monitors, but output to DVD seems to stutter when slow pans or tilts are taken.

Is there a reason for this and a work around to make the footage look smooth and silky?

David Saraceno · March 27th, 2008, 10:57 AM

it would be helpful if you provided the details of your workflow.

platform
authoring app
encoding app
length of the video and menus in total minutes
SD or HD
treatment of audio, ie aiff or ac3/dolby2
maximum video bit rate
target video bit rate
set top played on
tv
hdmi component or composite

Robert Lane · March 27th, 2008, 09:55 PM

Michael,

You might simply be seeing the results of the 24p "effect" on camera or subject movement. This motion blur can often be exaggerated when muxed down to MPEG-2 DVD standards because you're throwing away a lot of information to compress it down to that spec.

In a recent thread I posted here specifically about motion-blur relative to 24p, video cameras seem to exhibit more motion blur in 24p than actual film cameras do. Remember that "24p" in a video camera is a simulation of how film looks at 24 frames per second; there is no physical shutter inside a video camera which means {the camera} has to use software and chipset trickery to create this simulated shutter effect.

The interesting thing, is that with the HVX200 and HPX500 30p actually *looks* more like film @ 180deg shutter than the 24p setting - specifically when it comes to motion - however, because of tele-cine and other technical requirements you have to shoot 24p for almost all commercial projects.

If you're not in a film-transfer workflow or having to interface with other edit systems that require a 24p timeline try using 30p, chances are you'll like the look better from that camera.

A side note: The Varicam @ 24p really does simulate film @ 180deg much more accurately, more-so than even the F900 series.

Michael Mills · March 31st, 2008, 09:40 AM

Robert,

Thanks for the information. I understand that the 24p look only simulates the film look. I'll have to try the 30p. I like the native 24p workflow with the P2 cards and FS100 allowing larger storage. But the look or end result. Sometimes is great! But for any moving shots, I notice a lot of motion blur, which loses detail.

I'll have to check my Avid system to see if there is a way to convert this for finishing.

David Saraceno · March 31st, 2008, 01:57 PM

Michael:

Part of your issues also may be attributable to how you encoded.

Hence, my questions.

If you could take a few minutes to respond to each, we might be able to help you further.

March 27th, 2008, 10:04 AM	#1
Michael Mills Regular Crew Join Date: Oct 2006 Location: New York City, NY Posts: 28	HVX Footage in Finished to DVD HVX 24p Post footage looks great on my monitors, but output to DVD seems to stutter when slow pans or tilts are taken. Is there a reason for this and a work around to make the footage look smooth and silky? __________________ Michael Mills TeleStory Pictures www.telestorypictures.com

March 31st, 2008, 09:40 AM	#4
Michael Mills Regular Crew Join Date: Oct 2006 Location: New York City, NY Posts: 28	Robert, Thanks for the information. I understand that the 24p look only simulates the film look. I'll have to try the 30p. I like the native 24p workflow with the P2 cards and FS100 allowing larger storage. But the look or end result. Sometimes is great! But for any moving shots, I notice a lot of motion blur, which loses detail. I'll have to check my Avid system to see if there is a way to convert this for finishing. __________________ Michael Mills TeleStory Pictures www.telestorypictures.com

March 27th, 2008, 10:57 AM	#2
David Saraceno Major Player Join Date: Jan 2006 Location: Inland Northwest Posts: 490	it would be helpful if you provided the details of your workflow. platform authoring app encoding app length of the video and menus in total minutes SD or HD treatment of audio, ie aiff or ac3/dolby2 maximum video bit rate target video bit rate set top played on tv hdmi component or composite

March 27th, 2008, 09:55 PM	#3
Robert Lane Go Go Godzilla Join Date: Nov 2004 Location: Mesa, AZ Posts: 2,826 Images: 15	Michael, You might simply be seeing the results of the 24p "effect" on camera or subject movement. This motion blur can often be exaggerated when muxed down to MPEG-2 DVD standards because you're throwing away a lot of information to compress it down to that spec. In a recent thread I posted here specifically about motion-blur relative to 24p, video cameras seem to exhibit more motion blur in 24p than actual film cameras do. Remember that "24p" in a video camera is a simulation of how film looks at 24 frames per second; there is no physical shutter inside a video camera which means {the camera} has to use software and chipset trickery to create this simulated shutter effect. The interesting thing, is that with the HVX200 and HPX500 30p actually looks more like film @ 180deg shutter than the 24p setting - specifically when it comes to motion - however, because of tele-cine and other technical requirements you have to shoot 24p for almost all commercial projects. If you're not in a film-transfer workflow or having to interface with other edit systems that require a 24p timeline try using 30p, chances are you'll like the look better from that camera. A side note: The Varicam @ 24p really does simulate film @ 180deg much more accurately, more-so than even the F900 series.

March 31st, 2008, 01:57 PM	#5
David Saraceno Major Player Join Date: Jan 2006 Location: Inland Northwest Posts: 490	Michael: Part of your issues also may be attributable to how you encoded. Hence, my questions. If you could take a few minutes to respond to each, we might be able to help you further.