HVR-V1 Too much noise at DVinfo.net

Mauro Moreira · April 1st, 2008, 05:40 PM

Hello,

I've recorded a video using the 24p mode, with NO gain, 1/24 shutter. I've captured using the ProRes easy setup in the FCP 6.0.2.
My first impression, is that the image has a lot of grain, and i don't know why.
Second, the video came with 30fps (29,98) and no with 24p, as it would be.
Does anyone know what i'm doing wrong?

Thanks,
Mauro.

Perrone Ford · April 1st, 2008, 06:06 PM

What were you shooting, and how did you light it?

More light = less noise.

Mauro Moreira · April 1st, 2008, 06:21 PM

i was shotting in low light indoor, outdoor with daylight and by the night too, but with some lights.
The point is that there's a lots of noise in the low light and a relative noise in the more lighted and daylight shoots.
In low light, the shadows wouldn't have to be more black, or the camera creates this noise in low light?

K.C. Luke · April 1st, 2008, 07:46 PM

There are many posts about V1 user...should see what they say

http://www.dvinfo.net/conf/showthrea...ight=low+light

Seth Bloombaum · April 1st, 2008, 07:49 PM

If the camera is new to you, is it possible that you made a mistake in operation and recorded with gain? Seems like this is the only (?) possibility to explain noise in the dark areas, unless the cam itself has a problem.

Not only do you need to be shooting manually, the gain display has to be visible in the viewfinder/lcd and reading "0" to actually have no gain applied.

24p on the V1 is embedded and recorded in a 1080i 29.97 stream (pulldown added). This is what your NLE will see the video as. Perhaps this is fine for your use, or, you may pull out the extra frames. Sorry, I've not been using FCP with my V1, but a forum search or google search will turn up the workflow for removing pulldown.

Mauro Moreira · April 2nd, 2008, 07:53 AM

I'm sure that i didnt shoot with gain. I'll try to put some videos in the internet to compare.
Ps: I have exported to a DVD and playned in a normal tv, and the noise seemed to be lower, but, instead of it, theres a little bit of some "blur".

Thanks.

Hugh Mobley · April 2nd, 2008, 08:46 PM

I have a V1 and am totally unsatisfied with my 24p shooting. try this, shoot 1080i, get yourself Cineform NEO HDV capture as cineform avi deinterlaced, convert in your NLE, I use Vegas, as 29.97 or 24.97 progressive. edit as progressive, and render as mpeg4 at least 3 mbps, up to 6 mbps. I have used cbr and vbr with good results. my clips are coming out very good using this. Even when I render as mpeg2 for dvda and make a dvd the results are very good, never with a clip shot in 24p in the camera.

Justin Zimmerman · April 3rd, 2008, 08:57 AM

also, try 30P. it's a great hybrid look.

Mauro Moreira · April 23rd, 2008, 03:32 PM

Now i've uploaded a demo of the clip, it does not have any filter. Take a look.
http://www.vimeo.com/932892

Mauro Moreira · April 24th, 2008, 09:29 AM

Does anyone noticed the "extra" noise in the darker scenes?

Marcus Marchesseault · April 24th, 2008, 07:37 PM

I only notice compression artifacts.

Leslie Wand · April 24th, 2008, 11:32 PM

Quote:

Originally Posted by Marcus Marchesseault

I only notice compression artifacts.

ditto. agree with marcus

Mauro Moreira · April 25th, 2008, 08:04 AM

Marcus,

Compression artifacts? My english is not good, but, what does that mean?
Are you talking about the compression i did for Vimeo or any other compression (maybe in the capture).
The compression is h.264 for web in Vimeo.

I've shot in 24p, i tried to capture using the FCP 6.0.2 and Apple ProRes 422 108024p but it didn't work, so the project is in 29,97fps and has some equal frames every 4 frames.

Thanks,
Mauro.

April 1st, 2008, 05:40 PM	#1
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	HVR-V1 Too much noise Hello, I've recorded a video using the 24p mode, with NO gain, 1/24 shutter. I've captured using the ProRes easy setup in the FCP 6.0.2. My first impression, is that the image has a lot of grain, and i don't know why. Second, the video came with 30fps (29,98) and no with 24p, as it would be. Does anyone know what i'm doing wrong? Thanks, Mauro.

April 1st, 2008, 07:46 PM	#4
K.C. Luke Regular Crew Join Date: Jul 2007 Location: Singapore Posts: 173	There are many posts about V1 user...should see what they say http://www.dvinfo.net/conf/showthrea...ight=low+light __________________ Edit on Adobe Creative Suite Production Premium CS5 Mac 64BIT

April 2nd, 2008, 08:46 PM	#7
Hugh Mobley Major Player Join Date: Nov 2006 Location: Placentia, Calif Posts: 549	I have a V1 and am totally unsatisfied with my 24p shooting. try this, shoot 1080i, get yourself Cineform NEO HDV capture as cineform avi deinterlaced, convert in your NLE, I use Vegas, as 29.97 or 24.97 progressive. edit as progressive, and render as mpeg4 at least 3 mbps, up to 6 mbps. I have used cbr and vbr with good results. my clips are coming out very good using this. Even when I render as mpeg2 for dvda and make a dvd the results are very good, never with a clip shot in 24p in the camera. __________________ Hugh Mobley www.petplanetvideos.com http://exposureroom.com/members/hmobley.aspx/

April 23rd, 2008, 03:32 PM	#9
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	Samples Now i've uploaded a demo of the clip, it does not have any filter. Take a look. http://www.vimeo.com/932892

April 24th, 2008, 09:29 AM	#10
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	Noise Does anyone noticed the "extra" noise in the darker scenes?

April 1st, 2008, 06:06 PM	#2
Perrone Ford Inner Circle Join Date: Nov 2006 Location: Tallahassee, FL Posts: 4,100	What were you shooting, and how did you light it? More light = less noise.

April 1st, 2008, 06:21 PM	#3
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	i was shotting in low light indoor, outdoor with daylight and by the night too, but with some lights. The point is that there's a lots of noise in the low light and a relative noise in the more lighted and daylight shoots. In low light, the shadows wouldn't have to be more black, or the camera creates this noise in low light?

April 1st, 2008, 07:49 PM	#5
Seth Bloombaum Inner Circle Join Date: Sep 2003 Location: Portland, Oregon Posts: 3,420	If the camera is new to you, is it possible that you made a mistake in operation and recorded with gain? Seems like this is the only (?) possibility to explain noise in the dark areas, unless the cam itself has a problem. Not only do you need to be shooting manually, the gain display has to be visible in the viewfinder/lcd and reading "0" to actually have no gain applied. 24p on the V1 is embedded and recorded in a 1080i 29.97 stream (pulldown added). This is what your NLE will see the video as. Perhaps this is fine for your use, or, you may pull out the extra frames. Sorry, I've not been using FCP with my V1, but a forum search or google search will turn up the workflow for removing pulldown.

April 2nd, 2008, 07:53 AM	#6
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	I'm sure that i didnt shoot with gain. I'll try to put some videos in the internet to compare. Ps: I have exported to a DVD and playned in a normal tv, and the noise seemed to be lower, but, instead of it, theres a little bit of some "blur". Thanks.

April 3rd, 2008, 08:57 AM	#8
Justin Zimmerman Regular Crew Join Date: Sep 2006 Location: Portland, Oregon Posts: 101	also, try 30P. it's a great hybrid look.

April 24th, 2008, 07:37 PM	#11
Marcus Marchesseault Trustee Join Date: Nov 2005 Location: Honolulu, HI Posts: 1,961	I only notice compression artifacts.

April 25th, 2008, 08:04 AM	#13
Mauro Moreira New Boot Join Date: Mar 2008 Location: São Paulo SP Posts: 14	Marcus, Compression artifacts? My english is not good, but, what does that mean? Are you talking about the compression i did for Vimeo or any other compression (maybe in the capture). The compression is h.264 for web in Vimeo. I've shot in 24p, i tried to capture using the FCP 6.0.2 and Apple ProRes 422 108024p but it didn't work, so the project is in 29,97fps and has some equal frames every 4 frames. Thanks, Mauro.