What is this problem?

Juni Zhao · October 24th, 2007, 02:02 PM

Quote:

Originally Posted by Philip Williams

Mmmm... you don't mean the composite video ouput that sends the video out over the yellow RCA cable right? I must have missunderstood, long day...

I meant the composite cable with yellow RCA jack that came along with the camera... :-)

Philip Williams · October 24th, 2007, 02:08 PM

Quote:

Originally Posted by Juni Zhao

I meant the composite cable with yellow RCA jack that came along with the camera... :-)

Well, now then we're talking about an interlaced video being piped across a cable that supports around 240 lines of resolution, then upscale that entire questionable video signal to 1080i and... well, there you go :)

Carl Middleton · October 24th, 2007, 02:11 PM

Also, watching a commercial DVD on an HDTV connected via component or HDMI is going to look gorgeous. The DVD player, if it's one so enabled, is going to upconvert to HD, whereas the component yellow cable is going to be piping pure SD.

C

Juni Zhao · October 24th, 2007, 02:23 PM

Quote:

Originally Posted by Philip Williams

Well, now then we're talking about an interlaced video being piped across a cable that supports around 240 lines of resolution, then upscale that entire questionable video signal to 1080i and... well, there you go :)

I hope you found what my problem is :-), however, let me post another picture:
http://channeldv.com/public/mpg2compressed.JPG

This one was taken from the same TV with a component cable connected to the DVD. The video was compressed to mpeg2 using Cinema Craft Encoder (the most expensive and the best software encoder out there), but the result is pretty much the same. Another enlightenment please :-)

Rob Stoner · October 24th, 2007, 02:35 PM

are these lines visible in the original footage when viewed on your computer monitor when editing?

Jeff Kellam · October 24th, 2007, 02:46 PM

Quote:

Originally Posted by Juni Zhao

The TV is just a regular plasma 42" 1080i, so I assume it's 1920x1080. The thing is: when it plays regular commercial DVD it's just nice and smooth. I don't get why there is such a difference....

There is 0% chance your 42" Plasma is 1920X1080, no such thing.

If it is 0 to 2 years old it is probably 1024X768.

If it is 1 to 3 years old it is probably 852X480.

Juni Zhao · October 24th, 2007, 02:49 PM

OK, here is a pic I captured from my NLE:
http://channeldv.com/public/original.bmp
The wires are still jagged. Any comment?

Eric Weiss · October 24th, 2007, 03:00 PM

The flag isn't looking too good either.

Shoot HDV and downconvert.

Shooting SD with the A1 is heresy.

Rob Stoner · October 24th, 2007, 03:01 PM

my guess is that the wires were twisted. it is very rare that cables that are hung are just hanging and not twisted around a guide wire. either that or it is interlacing artifacts. either way this means that it is part of your source footage and not an artifact that is introduced by compression or the tv.

Juni Zhao · October 24th, 2007, 03:11 PM

Quote:

Originally Posted by Rob Stoner

my guess is that the wires were twisted. it is very rare that cables that are hung are just hanging and not twisted around a guide wire.

Hehe, this is the New England Style wire hanging.....

Juni Zhao · October 24th, 2007, 03:12 PM

here is another pic using Sony Z1U,
http://channeldv.com/public/original_z1u.bmp

So can I say this problem is a universal problem with all HDV camera when SD is used?

Eric Weiss · October 24th, 2007, 03:20 PM

Quote:

Originally Posted by Juni Zhao

here is another pic using Sony Z1U,
http://channeldv.com/public/original_z1u.bmp

So can I say this problem is a universal problem with all HDV camera when SD is used?

That's awful.

"Hehe, this is the New England Style wire hanging....."

I don't see any witches dangling from them?

Juni Zhao · October 24th, 2007, 03:20 PM

http://channeldv.com/public/original_z1u2.bmp
this is a better pic with Z1U, I deinterlaced the still....

Richard Hunter · October 24th, 2007, 04:35 PM

Quote:

Originally Posted by Juni Zhao

The TV is just a regular plasma 42" 1080i, so I assume it's 1920x1080. The thing is: when it plays regular commercial DVD it's just nice and smooth. I don't get why there is such a difference....

Sorry my question wasn't relevant. Didn't notice you were using SD.

Richard

Richard Hunter · October 24th, 2007, 04:37 PM

Quote:

Originally Posted by Jeff Kellam

There is 0% chance your 42" Plasma is 1920X1080, no such thing.

Hi Jeff. Why do you say this? We have these "Full HD" plasma sets for sale in Singapore. They're not as common as Full HD LCDs but you can get them no problem.

Richard

October 24th, 2007, 02:11 PM	#18
Carl Middleton Major Player Join Date: Sep 2007 Location: Fernandina Beach, FL Posts: 562	Also, watching a commercial DVD on an HDTV connected via component or HDMI is going to look gorgeous. The DVD player, if it's one so enabled, is going to upconvert to HD, whereas the component yellow cable is going to be piping pure SD. C

October 24th, 2007, 02:35 PM	#20
Rob Stoner Regular Crew Join Date: Sep 2007 Location: Milwaukee, Wisconsin Posts: 50	are these lines visible in the original footage when viewed on your computer monitor when editing?

October 24th, 2007, 02:49 PM	#22
Juni Zhao Regular Crew Join Date: May 2007 Location: North Andover, Ma Posts: 102	OK, here is a pic I captured from my NLE: http://channeldv.com/public/original.bmp The wires are still jagged. Any comment?

October 24th, 2007, 03:00 PM	#23
Eric Weiss Major Player Join Date: Mar 2007 Location: Philly,PA Posts: 360	The flag isn't looking too good either. Shoot HDV and downconvert. Shooting SD with the A1 is heresy.

October 24th, 2007, 03:01 PM	#24
Rob Stoner Regular Crew Join Date: Sep 2007 Location: Milwaukee, Wisconsin Posts: 50	my guess is that the wires were twisted. it is very rare that cables that are hung are just hanging and not twisted around a guide wire. either that or it is interlacing artifacts. either way this means that it is part of your source footage and not an artifact that is introduced by compression or the tv.

October 24th, 2007, 03:12 PM	#26
Juni Zhao Regular Crew Join Date: May 2007 Location: North Andover, Ma Posts: 102	here is another pic using Sony Z1U, http://channeldv.com/public/original_z1u.bmp So can I say this problem is a universal problem with all HDV camera when SD is used?

October 24th, 2007, 03:20 PM	#28
Juni Zhao Regular Crew Join Date: May 2007 Location: North Andover, Ma Posts: 102	http://channeldv.com/public/original_z1u2.bmp this is a better pic with Z1U, I deinterlaced the still....