The videos so far have told me it probably is not i-frame related because it breaks after a different number of frames each time.
I checked myself,
Blue Iris did not suddenly start supporting Direct-to-Wire in clips.
Lets check on a few more basics. These questions are for everyone repeatedly having the issue with HTML5 player stalls being detected, FPS readout dropping to 0, playback progress bar stopping moving, etc (all these things happen as a consequence of the same problem).
1. Are you using hardware accelerated decoding in Blue Iris on any of the cameras? (check status window > Cameras to be sure. The "HA" column should be all hyphens.
View attachment 242197
2. Are you using hardware accelerated encoding? (in BI Settings > Web server > Advanced > Streaming 0 (or 1 or 2) > Configure.
3. Is direct-to-disk being used on affected cameras?
4. Does it only affect some cameras (and not others)?
5. Does it affect group streaming (multi-camera views)?
6. Did anyone try downgrading Blue Iris to a version that was not affected, to see if it is still not affected? This would help rule out if Blue Iris is doing something different to cause the issue. Please do not feel compelled to perform this test if you haven't done so already.