seekbar is slow

[MBlueSky]

Hi.
I converted my video by Handbrake but when I click on the seekbar of player it has delay in playing video from there. What's wrong? can you help me plz?

[LigH.de]

Not with so few details. Which formats (MediaInfo analysis, Handbrake options)? Which player?

Some players (e.g. MPC-HC) have an option to choose either accurate seeking (then the player needs to decode from the beginning of the GOP which contains your seek position to the exact seek position, which takes randomly more time the longer a GOP is and the more complex the video format is) or fast seeking (the player just seeks to the previous or the closest GOP start, which may be a little off your desired seek position).

But prerequisite is an intact keyframe index if your container provides any (MP4 or MKV have them, TS has not).

[jagabo]

Note that the default GOP size in x264 and x265 is 250 frames -- 10 seconds with a 25 fps video, 8.3 seconds with a 30 fps video, etc. Using smaller GOPs, say 2 seconds worth of frames, will let you seek faster, though you'll get slightly less efficient compression .

[LigH.de]

If you want to be compatible to e.g. Blu-ray, other mobile players, or DXVA accelerated decoders, you would have to limit the encoding complexity (Profile@Level) anyway, GOP lengths included.