[Elphel-support] GPS data log bug - 353E

[Phil]

Ive tested just recording with nothing in the USB port & recording looks
super smooth with the timer counting up with no pauses. Now Ive tested the
Likoboard & I can see its more sticky. I think its something to do with the
USB?

On Mon, Apr 19, 2010 at 7:29 PM, Phil <phil at ergovideo.com> wrote:

> Hi All
>
> During filming yesterday I discovered that the recording of video with the
> GPS/KML function enabled with the Garmin 18 would stop at seemingly random
> spots.
>
> recording without the GPS unit attached works great. Recording with the GPS
> starts ok but you can visibly see that the frame rate displayed in the
> camogmgui would be slow to update. Eventually the cameragui would grind to a
> halt . I was unable to remove the GPS so rebooting & turning on the camera
> control page before the meta data displayed that it had seen the GPS unit
> seemed to help & I was able to record the last 1hr of the race with no
> issues. Sometimes I had a Buffer overrun message pop up when restarting the
> recording but then it would start after.
>
> It felt to me that the buffer memory on the camera was not getting cleared.
> I was recording images for the kml at 1 every 10seconds. For the 1st part of
> the race, I only turned on the recording for a few periods but could see
> that it was a bit unreliable. I decided to drop from 90% quality down to 65%
> (not really any good for my use of the footage) & I was later able to record
> for some hours mid race. I returned to 90% for a bit hoping to get some high
> quality film for the main part of the race but that soon locked up. I then
> filmed at 80% & that seemed ok for a while but then I started to have
> problems with recording stops.
>
> In the office Its hard to replicate this at 90% (not enough stuff in the
> image to get the bit rate up) but going to 93% causes a lock up after
> 50seconds.
>
> It would be really great to get the GPS data thing working as I really feel
> we can use this extra data in many different ways. Does anyone have any
> ideas for a solution other then just not using the USB port?
>
> grts Phil
>
>
>
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