Anyone see strobing within a conversion at DVinfo.net

Tom Chaney · July 20th, 2006, 06:05 PM

Hi Gang,

Started cutting our feature and when I convert some of the first stuff we shot with tape, suddenly the image is stroby.

We are using MPEG Streamclip to convert it to AICs.

It happens on camera cuts, and tends to be moving stuff. It's not the entire transfer, just specific shots.

When I set in and out points on the clip in Streamclip and reconvert just the affected shot, it works.

Kinda weird.

Any thoughts?

Thanks,

Tom Chaney

www.tomchaney.com

Daniel Patton · July 20th, 2006, 10:03 PM

It was all shot the same, 1/60 or 1/48? Never slipped down to 1/30 or 1/24 as can happen when in the hands of someone trying to deal with lower light?

Tom Chaney · July 21st, 2006, 04:18 AM

Nope all the same, 1/48.

Like I said, once I pull out just the one clip and retransfer, no issues.

Tom

John Vincent · July 21st, 2006, 07:52 AM

Tom - were all the shots shot on the 'A' version of the camera?

Also, could you describe more completely your work flow?

Hope your shooting going well -

john
evilgeniusentertainment.com

Rob Stiff · July 21st, 2006, 08:51 AM

I also have this same problem.
The footage plays back fine
from the deck. But, after the
m2t files are converted using streamclip
and brought into FCP, I get periodic strobing
and am sure how to fix or if it is possible...

Rob Stiff · July 21st, 2006, 09:04 AM

I also have this same problem.
The footage plays back fine
from the deck. But, after the
m2t files are converted using streamclip
and brought into FCP, I get periodic strobing
and am sure how to fix or if it is possible...

Daniel Patton · July 21st, 2006, 01:24 PM

Is this maybe not the same issue a few others noted, only to find out that it was how it displayed on the system screen? It did not strobe however when compiled to DVD and played back on the final system.

Just a thought.

Rob Stiff · July 21st, 2006, 01:45 PM

It play's back fine from the deck and camera into a monitor.

It only apprears after .m2t files are converted into
quicktimes.

The stobbing comes and goes from time to time.
Maybe there is an optimum setting
when converting the 24p quicktimes to MPEG-2
for DVD output?

Tom Chaney · July 21st, 2006, 04:36 PM

Again, If I pick the ins and outs in Streamclip, and reconvert, it's fine! Definitely not the display.

John may have a good point on the "A" version, but I'm pretty sure that the footage was after the "A" upgrade.

It's fixable Rob, find the clip that strobes in MPEG Streamclip, choose Edit, choose in, then go to the end and choose edit, choose out.

Tom

July 20th, 2006, 06:05 PM	#1
Tom Chaney Regular Crew Join Date: Oct 2005 Posts: 196	Anyone see strobing within a conversion Hi Gang, Started cutting our feature and when I convert some of the first stuff we shot with tape, suddenly the image is stroby. We are using MPEG Streamclip to convert it to AICs. It happens on camera cuts, and tends to be moving stuff. It's not the entire transfer, just specific shots. When I set in and out points on the clip in Streamclip and reconvert just the affected shot, it works. Kinda weird. Any thoughts? Thanks, Tom Chaney www.tomchaney.com

July 20th, 2006, 10:03 PM	#2
Daniel Patton Major Player Join Date: Apr 2005 Location: Knoxville TN Posts: 589	It was all shot the same, 1/60 or 1/48? Never slipped down to 1/30 or 1/24 as can happen when in the hands of someone trying to deal with lower light? __________________ Our eyes allow us to see the world - The lens allows others to see the world through our eyes. RED ONE #977

July 21st, 2006, 07:52 AM	#4
John Vincent Trustee Join Date: Sep 2005 Posts: 1,065	Workflow? Tom - were all the shots shot on the 'A' version of the camera? Also, could you describe more completely your work flow? Hope your shooting going well - john evilgeniusentertainment.com

July 21st, 2006, 08:51 AM	#5
Rob Stiff Regular Crew Join Date: Feb 2006 Posts: 173	Stroby Problem I also have this same problem. The footage plays back fine from the deck. But, after the m2t files are converted using streamclip and brought into FCP, I get periodic strobing and am sure how to fix or if it is possible...

July 21st, 2006, 09:04 AM	#6
Rob Stiff Regular Crew Join Date: Feb 2006 Posts: 173	Stroby Problem I also have this same problem. The footage plays back fine from the deck. But, after the m2t files are converted using streamclip and brought into FCP, I get periodic strobing and am sure how to fix or if it is possible...

July 21st, 2006, 04:18 AM	#3
Tom Chaney Regular Crew Join Date: Oct 2005 Posts: 196	Nope all the same, 1/48. Like I said, once I pull out just the one clip and retransfer, no issues. Tom

July 21st, 2006, 01:24 PM	#7
Daniel Patton Major Player Join Date: Apr 2005 Location: Knoxville TN Posts: 589	Is this maybe not the same issue a few others noted, only to find out that it was how it displayed on the system screen? It did not strobe however when compiled to DVD and played back on the final system. Just a thought. __________________ Our eyes allow us to see the world - The lens allows others to see the world through our eyes. RED ONE #977

July 21st, 2006, 01:45 PM	#8
Rob Stiff Regular Crew Join Date: Feb 2006 Posts: 173	It play's back fine from the deck and camera into a monitor. It only apprears after .m2t files are converted into quicktimes. The stobbing comes and goes from time to time. Maybe there is an optimum setting when converting the 24p quicktimes to MPEG-2 for DVD output?

July 21st, 2006, 04:36 PM	#9
Tom Chaney Regular Crew Join Date: Oct 2005 Posts: 196	Again, If I pick the ins and outs in Streamclip, and reconvert, it's fine! Definitely not the display. John may have a good point on the "A" version, but I'm pretty sure that the footage was after the "A" upgrade. It's fixable Rob, find the clip that strobes in MPEG Streamclip, choose Edit, choose in, then go to the end and choose edit, choose out. Tom