New SDI experiments... at DVinfo.net

Barlow Elton · February 13th, 2006, 12:09 PM

Hey all,

I lugged the G5 down to my sister's house the other day to do a little SDI experimentation in the field.

I shot her/my kids in the backyard jumping around on the trampoline in the late afternoon. I shot simultaneous SDI into DVCPROHD while also rolling HDV tape. I also did a little uncompressed capture. Here is a frame (just a scenic background) from the uncompressed. No, I didn't take a RAID with me...I recorded to my internal drive, which of course, dropped frames in the uncompressed capture, but I was able to look at some decent stills from what the drive could record. Have a look at one:

www.homepage.mac.com/mrbarlowelton

I'll post some clips of the comparison material later on.

Barlow

btw...one of my goals was to figure out how to convert DV100 1080i into 720 60p, and then try a true over-crank slomo, ala HVX...in post.

Any ideas or methods?

Pete Tomov · February 13th, 2006, 12:52 PM

I did the 720 60p out of 1080 60i on one of your earlier clips.Vegas was the ony program that did this automaticly.

Barlow Elton · February 13th, 2006, 02:16 PM

Pete,

Can Vegas render out a 24p slomo conformed clip from the 60p? If so, please report your impressions.

Pete Tomov · February 13th, 2006, 02:37 PM

Yeah,that's exactly what I did but I played it back at 30fps.Vegas resamples the video and it looks totaly progressive.You don't get the 'shaky' look associated with bob deinterlace at all and resolution also seemed perfect(on the low contrast clip I tested this with).

I also tried this with 50i xl2 footage downsampled to 75% and it also looks like perfect 50p footage.

February 13th, 2006, 12:09 PM	#1
Barlow Elton Major Player Join Date: Mar 2005 Location: UT Posts: 945	New SDI experiments... Hey all, I lugged the G5 down to my sister's house the other day to do a little SDI experimentation in the field. I shot her/my kids in the backyard jumping around on the trampoline in the late afternoon. I shot simultaneous SDI into DVCPROHD while also rolling HDV tape. I also did a little uncompressed capture. Here is a frame (just a scenic background) from the uncompressed. No, I didn't take a RAID with me...I recorded to my internal drive, which of course, dropped frames in the uncompressed capture, but I was able to look at some decent stills from what the drive could record. Have a look at one: www.homepage.mac.com/mrbarlowelton I'll post some clips of the comparison material later on. Barlow btw...one of my goals was to figure out how to convert DV100 1080i into 720 60p, and then try a true over-crank slomo, ala HVX...in post. Any ideas or methods?

February 13th, 2006, 12:52 PM	#2
Pete Tomov Regular Crew Join Date: Sep 2005 Posts: 106	I did the 720 60p out of 1080 60i on one of your earlier clips.Vegas was the ony program that did this automaticly.

February 13th, 2006, 02:16 PM	#3
Barlow Elton Major Player Join Date: Mar 2005 Location: UT Posts: 945	Pete, Can Vegas render out a 24p slomo conformed clip from the 60p? If so, please report your impressions.

February 13th, 2006, 02:37 PM	#4
Pete Tomov Regular Crew Join Date: Sep 2005 Posts: 106	Yeah,that's exactly what I did but I played it back at 30fps.Vegas resamples the video and it looks totaly progressive.You don't get the 'shaky' look associated with bob deinterlace at all and resolution also seemed perfect(on the low contrast clip I tested this with). I also tried this with 50i xl2 footage downsampled to 75% and it also looks like perfect 50p footage.