Yes, but there aren't 4 I frames. 1 I and 3 B frames. It seems to freeze the I frame for 4 frames total. Now, the 2 strategies to deal with this broken file:
1.) freeze first I frame/recovery point for 4 frames replacing the 3 stray b frames or
2.) skipping/deleting the 3 stray b frames
are both valid in itself. You have to do something.
The questions would be:
A.) is av sync maintained
B.) what happens at the end of the clip (both show a length of 501 frames)
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