Always a video mosquito noise!

S

Slava

Member
Hi guys!
I've bought a new DVX100B 2 months ago. I am afraid that my camera is not working properly because there is almost always a video mosquito noise. I am getting normal (without the video noise and with normal focus) shooting quality only once in a while. :crybaby:

Usually video noise and incorrect focus are surfacing throughout the entire shooting (scenes F1-F6) - regardless of whether there is a sunny or cloudy day, or which camera setting I use. The Gain Switch is L position. What else? Oh! The FOCUS on LCD monitor (camera) and viewfinder always is fine, but output file from camera (DV-avi) has video mosquito noise and not enough focus.

I see the video mosquito noise even when I am recording it through DVRack software without tape (WiFi cable between camera and laptop is 2 foot. I used two cables - the result is same). Look at my test (54MB., 14 sec., test.avi). This is the original file from DV tape (DVRack gives the same results). Has anyone ever had the same problem? Any suggestions? If anyone knows what this is - please, help!
 
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Ok, no offense, but you're a little bit anal about this don't you think? Have you watched this on an NTSC monitor or even a TV? Try that and let us know how "noisy" this footage is. It seems pretty normal for DV footage. I think you're blowing this out of proportion. Your footage does look rather flat due to the lighting, but that's not really the camera's fault.
 
Yes, it's really not that bad that I can tell either. It's not like it looks like this:

still.jpg
 
Thanks for your response, It must be the camera then, and I am expecting too much out of it... It looks OK on the TV screen, however I prefer watching the video on the computer LCD monitor (full screen) - and the noise is visible there. For coding my footage (scenes F5-F6) I am using Canopus ProCoder 2 to convert it to m2t format (MPEG2_HDV1_720p_NTSC_16x9_60.m2t). Maybe I am doing something incorrectly?
Sorry, I am not a native English speaker. :-)
 
Slava said:
Thanks for your response, It must be the camera then, and I am expecting too much out of it... It looks OK on the TV screen, however I prefer watching the video on the computer LCD monitor (full screen) - and the noise is visible there. For coding my footage (scenes F5-F6) I am using Canopus ProCoder 2 to convert it to m2t format (MPEG2_HDV1_720p_NTSC_16x9_60.m2t). Maybe I am doing something incorrectly?
Sorry, I am not a native English speaker. :-)
Click to expand...

I think your English is pretty darn good. The reason it seems so prevalent on your computer monitor is because your monitor is WAY higher resolution than a TV or any NTSC display. If you are uprezzing to 720p (which it appears that you are) then the noise will also be more prevalent because you are taking an SD source and upsampling it to a higher resolution. From my standpoint it looks normal.

Good one Vidled. :D
 
I think there is not enough light. Bring the clip into an editing program and take a look at the levels histogram. It is missing a nice size chunk of brighteness information.

Either shine more light or open up the aperture or set the aperture norm point higher. The way dvx gets the film look is to reserve a lot of space for the highlights. This makes most images look a little dull.

I'd rather fully saturate the ccds then color correct in post to bring the levels down.

Its like a movie set. If you shoot a nighttime bedroom scene with film there are lights everywhere because you have to saturate the film... just like you have to saturate the ccds to get out of the noise.

Its like recording a cassette tape at too low volume.... its all about signal to noise ratio.
 
nice post, astroanalyst. I couldn't agree more. I think that the main reason the dvx gives people flat, boring, and noisy images is from a lack of experience and knowledge of the camera itself. I know my first videos shot on the dvx weren't all that great, but they've improved drastically overtime. So Slava, since you just bought the dvx100b, if you don't have much prior knowledge on how to operate this camera (or similar cameras) just keep practicing and read as much as you can on here, in barry's book, and DON'T forget about lighting! Now, if you DO have experience with this camera, then I don't know what to say.

I hope you start getting images you like out of the cam. Goodluck!
 
Yes you are right - this is my first video camera in my life. I've never owned a videocamera before. I'll be reading and learning everything related to the film-shooting. Thank you very much for your help and advises!
 
FilmMakerr,
Why would this scare you... the dvx can be set up to look like any other camera OR it can be set up to look more like a film camera. It is totally flexible. If you haven't bought the camera yet then I would opt for HD.
 
astroanalyst said:
FilmMakerr,
Why would this scare you... the dvx can be set up to look like any other camera OR it can be set up to look more like a film camera. It is totally flexible. If you haven't bought the camera yet then I would opt for HD.
Click to expand...

Yes, you're right..we'll just have to mess around with the camera to get it to stop breeding mosquitos inside.

As a matter afact, I was a click away from buying an HVX, but then I read more about it and realized with an 8GB p2 card, you can only record 16 mins of PROHD. Now, a hvx with 2 8gb P2 card will cost me:

$8000-9000

Dvx+Adapter+Dolly+Tripod+Lighting+Matte Box=5-6K
 
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