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POV cameras for skiing? - Page 2

post #31 of 41
Quote:
Originally Posted by carvemeister View Post


So why the powering off with apparently good batteries?  Best I can determine from another source is that with Alkaline batteries you have a linear discharge rate and their charge shows more accurately on the VIO display.  However, when using NiCads, they will retain a somewhat lower voltage, for a longer period, but then voltage will drop suddenly as the charge begins to weaken. This might not show on the charge display,  but could cause sudden shut offs and thus the Invalid clips.  


That's exactly the problem; in fact, I remember reading somewhere that you cannot accurately use battery meters/gauges on NiCad rechargeables precisely because of the nonlinear discharge.  

I got burned on my first day out this season, because my NiCads took a dive in capacity over the summer (I didn't use them and I guess they discharged too low, then couldn't take a full recharge later).  Didn't bother me too much, as I was only trying to dial in my new camera mount that day, but I did have to go buy a new set of NiCads.  Not sure what I will do to maintain the new set over the summer, but at $12 for four, I suppose I could afford a new set each season.
post #32 of 41
skier219, have you ever had the invalid clip problems at all?

BTW - my batteries were brand new top quality 2700 mAh Sanyos and I charged them with a top rated charger.  Even with that, I was apparently pushing my luck using them past 1 full day.
post #33 of 41
 I haven't run into the invalid clip problems myself.
post #34 of 41
Not even once, eh?  Hmmm...I'm beginning to wonder if there could be a small problem developing in addition to the battery issue I did have, since I did get a few Invalid Clips over several days even with fresh batteries each day.  

Quote:
Originally Posted by skier219 View Post

 I haven't run into the invalid clip problems myself.
post #35 of 41
 Yeah, I've never seen it.  I think the only time I have had issues with the VIO is when I forgot to shut it off before disconnecting the camera cable (which I would do if I take a break indoors and pull off my helmet for any length of time).  That will almost always freeze the unit and require a power cycle.  I am getting better about remembering to power down first....
post #36 of 41
Quote:
All of the cameras that put batteries in the camera head have this issue, because of two things: first, the size/capacity of the batteries is limited by the space available in the camera head (which they try to keep small for good reason), and second, it puts the batteries out in the cold which really hurts power output.  I don't think there is a technical way around this.  Volume/size and temperature are two important factors that are limited by battery technology more than anything else.


 I understand that.  I am talking about my ContourHD 720p, which has the batteries in the camera head.  I seem to be getting better battery life than other's have reported.  I generally seem to get about 3 hours per battery even in pretty cold temps, less at lower temps but even in single digits I get 2 hours or so.
post #37 of 41
 I was thinking 2-3 hours was about what I'd expect in a best case, where ultimately you're running into the limitations of smaller battery capacity out in the cold.  Keep in mind I get 8-10 hours (or more) from the VIO running *continuously* the whole time with larger batteries inside a jacket.  So 2-3 versus 8-10 is the difference I am sort of getting at.  It's not so much what camera you have, it's the battery size and location that is the ultimate factor.
post #38 of 41
refill:

Your footage looks awesome! How did you mount the ski-mounted camera? Straps? Suction cup? Drilled holes in your ski?

Hmmm . . . now that I've viewed their website, I'm assuming the adhesive mount? How many adhesive pads do they give you? Or, did you use their FCS fin mount? How does that attach exactly?
post #39 of 41

Hi,

 

I've been using a VIO POV 1.5 this season in the UK and have also had mega problems with the "Invalid Clip" message. It seems to occur at the most random times and I have no idea what's causing it. On the VIO website it says it can be caused by using inferior SD cards, but I now have a $150 class 10 card and the problem still seems to occur!!!

 

I would advise anyone to strongly avoid this unit until the VIO 2.0 comes out sometime this year - if anyone has managed to trace the problem of this message please reply as i'm going to throw my VIO out the window very soon

post #40 of 41
Quote:
Originally Posted by GusParker View Post

Hi,

 

I've been using a VIO POV 1.5 this season in the UK and have also had mega problems with the "Invalid Clip" message. It seems to occur at the most random times and I have no idea what's causing it. On the VIO website it says it can be caused by using inferior SD cards, but I now have a $150 class 10 card and the problem still seems to occur!!!

 

I would advise anyone to strongly avoid this unit until the VIO 2.0 comes out sometime this year - if anyone has managed to trace the problem of this message please reply as i'm going to throw my VIO out the window very soon


I believe the problem relates to using NiCad batteries that are not fully charged.  Read my last post here: http://www.epicski.com/forum/thread/90914/pov-cameras-for-skiing#post_1208648  

 

I haven't used my POV since my drastic day of failure at the end of the season when I was cat skiing.  So, I can't say if this will reslove the Invalid clip problem for sure or not.  I'll have to wait till next year to see if this problem occurs again, if it does, I'm dumping this thing.  

post #41 of 41

Hello, my name is Jeroen and I am another dissapointed VIO POV cam owner.

After having generated several invalid clips, I did some testing and now I'm pretty sure what causes the problem:

a temporary disconnection between the cam head and the recording device.

The cable really seems to be a weak spot and just a few shakes or shocks (pretty common in action sports if you ask me)

can cause a discontinuity of data stream wich results in failure to store the clip

(there's no on-the-fly storage of data, so you won't even have saved half a clip).

 

Different batteries, different SD-cards and firmware upgrade,

I'm pretty sure you can all disregard these as causes for the invalid clip issue.

I've tried them all too, and they don't make a f***ing difference.

 

I'm using the POV on a motorcycle and if not for this lame ass cam system

YouTube would be richer quite a few cool race track clips .

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