Blue Iris

Hi All,

I've seen two strange things happen with my BI system recently and I'm stumped; hopefully someone can help me to work out what's causing these!

(1) The 'Alerts' folder is full of JPG files all of ZERO BYTES! I don't have high-res JPEG specified in the 'Triggers' tab for any of the cameras; they're all database only alerts. What are these files, and why?

(2) Last night, a camera recorded an alert for an event - quite noticeable as it was a fox taking a dump right in front of camera! - and the video shown when I initially hover over that entry in the alerts list shows the fox. However, when I play back the clip, there's no such event recorded... there was video loss from that camera for ~30s about a minute before the alert, but the timecode shows constant video through the alleged alert time. I've tried playing back the full clip for that period a few minutes either side of the alert time and there's no sign of the vulpine misdemeanour. This was all around 23:00, so there's no interference from the change to summer time (and anyway my whole system stays in UTC all year).

Anyone have any ideas? Thanks!

I'm not sure about the first issue. Could the second issue be the difference between a sub stream and main stream ? The video loss you experienced could affect the streams differently.

That's a thought; i thought the camera was dropping out completely (it's a wi-fi thing, so prone to do that), but perhaps it's just getting low bandwidth for a moment and can't get the main stream through. You're right, that probably would cause the thumbnails (sub-stream, I guess) to be there and the main video not.

Either way, I think I have to move that camera somewhere the wi-fi is better; it seems to be within range of three access points, but none of them quite close enough for consistently good performance.