Berdasarkan rujukan di bawah ini, saya mengusulkan:

scrubber bar = panel geser

The Scrubber Bar displays the progress point in the timeline of the currently playing animation. While the animation is playing, the Scrubber Bar advances from left to right, indicating how much of the animation has played and how much remains.
By holding down the mouse button on the Scrubber Bar, the user can drag the Scrubber Bar forward or back to rewind or advance the animation to any point on the timeline. Release the mouse button and the animation will play from that point.

To view the animation as still images, first click the Pause button. Next, use your mouse to move the Scrubber Bar forward or back. Release your mouse button and the animation stays at the frame selected. To resume playing the animation from this new point, click the Play button.
http://www.cornellcardiology.com/player/help.htm

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Note added at 1 hr (2013-08-07 00:16:22 GMT)
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Tekan tombol Tengah sampai Anda melihat panel geser (scrubber bar).
http://manuals.info.apple.com/id_ID/iPod_classic_160GB_Petun...