When I’m viewing cameras on my mobile I notice sometimes before it switches to the mainstream it shows a random clip from a saved video or early time in the day (as shown in this video). It doesn’t happen all the time it’s just sporadic.
Some cameras seem to be problematic. Matching FPS and i-frame can cut that down quite a bit...except for when it doesn't LOL. Most of mine are instantaneous but 1 has a slight pause where I see the substream and then goes to mainstream, and one does that quick image from another time for a split second and then to it.
I run the substream for the CPU savings and can except that little blip. If you have the horsepower to not need it, then go without it.
For me on all my Dahua cams (Listed in signature) it does it even for live view, which really bugs me. I leave it on my LPR cameras just because I never really view those anyway
Here is a sample, its dark right now and as you can see it flashes an image from all the way back when it was light at 4:54, and then switches back to 6:30...
Switching between the streams has always had this glitch but Ken has updated to make the transition less glitchy quite a while back.
As far as I understand it when you switch from the sub to main it kicks off from the last image it had which if you don’t do this frequently could be from a while back and then starts streaming the live feed.
The benefits of using substreams for me greatly outweigh the negatives so I just accept it the way that it is.
I reported this issue to Ken back when sub streams were new and this was the solution he proposed then, so I'm glad it is actually happening even if it is really late.
I don't think it was that big a deal, even in today's world of instant gratification, in the first place. A minor lag isn't that much of a problem, at least for me. Getting rid of it is nice, though, but I'll wait until tomorrow, at least, to see how this version settles in.
