Are these long seek times expected?

[pauljurczak]

I'm accessing frames in a .MOV file with over 25K frames, 3840 × 2160, H.264 (High Profile), 60fps. Here are the timings on a fairly fast PC, starting from file open:

frame #100: 2.97s
frame #1000: 28.39s
frame #10000: 280.19s

Is it normal? Is there anything I can do to improve random access?

How do video viewers allow a fast-forward at the speed of a mouse dragging a slider? Are there other libraries with faster seek time?

[pauljurczak]

Perhaps my software configuration is defective. Is there a description of OS configuration somewhere, e.g. installed codecs, required for optimum performance?