# Video Camera Problems

#### gafftaper

##### Senior Team
Senior Team
Fight Leukemia
Hey All...
I've got a Canon ZR70MC... about 3 1/2 years old. It's worked great and I've been very happy with it. I just took it out of the camera bag and it suddenly doesn't work. The view screen works for setup mode and plays back previously recorded video but new video is just black. It records sound just fine. And yes, I did take the lens cap off... I checked several times. As far as I know there's been no drops or damage. Did my CCD just die on my out of the blue?

Is it worth trying to get one of these repaired?

If I decide to replace it any suggestions? It's primary use is just shotting home movies of the kids so I don't need a lot of features or crazy zoom abilities. It's all about getting pictures of the little ones. I'm all set up to edit video with Pinacle studio on the computer.

#### SHARYNF

##### Well-Known Member
Do you get any image on the lcd when you attempt to record? look in the menue and see if there is an av in option or any special effect options.
If you get a black image, then there is a signal, but the exposure might be off.

These typically are not worth fixing, I'd look at the new Sony HD or Canon hd camcorders.
Sharyn

#### gafftaper

##### Senior Team
Senior Team
Fight Leukemia
It's just a black Image in the viewfinder both during recording and playback. I went through the whole menu and tried changing every setting that made sense. But like I said it worked when we put it in the bag and then it didn't work when I took it back out. So I doubt it's settings. Did the three year old kick the case around the bedroom... now there's a possibility.

#### SHARYNF

##### Well-Known Member
This whole area can be very confusing, and it is very important to understand what flavor of HD we are talking about
yp
There is true HD 1080i which has a high data rate, and storage requirements, and typically some of the editing systems did infact have you create a proxy file in sd to use for editing inorder to allow for the massive load on your editing system. This format is input to the computer via SDIHD, or HDMI

There is HDV which is a compressed HD format, uses the same dv tapes AND data rate of 25MBS and is the typical format for consumer or prosumer cameras like Canon etc. This format is what most of the standard editing systems use when the talk about HD support and uses firewire 1394 for input

Then there is AVC-HD, this is a compressed format that Panasonic and Sony use, it is what is used on the DVD versions or Hard Drive versions of the camcorders. This typically uses the DVD or USB for the connection. THE PROBLEM is that it is NOT WIDELY supported, for instance only the more recent version of Sony Vegas support the SONY version and DO NOT work with the Panasonic Version.

So it is not quite as simple as it might seem. Monitoring is also an issue, some systems down res to SD others require you to use a HDMI monitor.
In addition if you want to do any live switching, your options are more limited and much more expensive.

It is correct that if you shoot in HDV and even if you down convert to SD the image typically will look better.
Sharyn

#### cvanp

##### Active Member
Why would you scale down the video? External storage is dirt cheap now a days and with eSATA drives, they are certainly fast enough for HD miniDV or the like.
Typically, you scale HD video to SD for the editing process not because of storage concerns, but because during the editing process you want it to be fast. By scaling it, any renders you have to do will be significantly faster with SD footage than with HD. Then when you have the project all set, you just substitute the SD footage with HD footage and you're all set. You don't have to do the whole down-res thing, but if you're spending a lot of time in the editing room that might be the way to go.

MPEG-4 isn't used much for physical media-based acquisition - HDV (aka High Def MiniDV) is based on MPEG-2, as are DVD formats.

MPEG-4 is very popular for the new generation of hard disk cameras; the most used codec being the "AVCHD" recording format (AVCHD is a variant of MPEG-4's H.264 compression standard). It promises to be a really nice workflow, being all digital, but the problem is that nothing edits AVCHD. Literally, Final Cut Pro only just released AVCHD support, and it still barely works. I don't know of any consumer editors that support it except maybe Sony Vegas. I suppose though, that's a risk you have to take with new technology.

Personally, my recommendation is still to build a physical media system (HDV being my personal favorite acquisition format). There is a lot of promise in digital workflows, but ultimately the codecs form a huge weakness. Manufacturers are trying to squeeze out everything they can from storage space, and it's impacting quality quite noticeably.

And I just noticed that the whole chunk on codecs is just a rehash of what Sharyn said... sorry!

#### kwotipka

##### Active Member
Ok,

I must be spoiled here. For me, 10bit 4:2:2 has never been an issue. As I have been taken behind the woodshed and given a good talking to, most users here are in the DVish flavor of video with smaller horsepower boxes.

On that note, the world is always changing. We in video see these changes happen on a daily basis. As new flavors come and go some stick around and become semi standards. Take Apple FCP new ProRES codec. It really shrinks the high bitrate / res files down to a manageable size. If you couple that with AjA's new injest box that converts 10/4:2:2 SD or HD to ProRES IN THE BOX and then shoots that down a Firewire800 connection, you can do HD on a Mackbook Pro no problem.

So, I guess it is all relative to the scope of work you are doing. For some folks SDI or HDSDI might seem like a challange. However when you are stuffing it into a 7 camera HD truck with a GVG Klypso switcher, it's not that big of an issue.

I have dealt with digital from a broadcast perspective more then a corporate theater one. As more switchers and scalers start to use native SD/HD SDI, I'll keep you posted on how it goes.

kw

#### SHARYNF

##### Well-Known Member
I think it is important to remember the typical member of this forum. Most are unlikely to have access to cameras that are storing FULL HD. Prores 422 is great, BUT remember IF you are acquiring in HDV and then converting it to ProRes422 you cannot create more resolution than the original stored files. SO IF you could capture real time from the camera or switcher in real time without going to any intermediate compression it would be one thing.

This is an area that has caused a lot of confusion. There are a lot of consumer ish HD camcorders that have HDMI connections, that are capable of outputting a full 1080i feed BUT unless you are feeding this from the imager and NOT from a tape you are NOT going to get the full HD signal.

That said the compression systems are getting better and better and the quality can be stunning.

Sharyn