# Motion tracking FLV video: A little bit sketchy

**URL:** <https://forum.kirupa.com/t/motion-tracking-flv-video-a-little-bit-sketchy/307761>\
**Category:** flash\
**Created:** [April 9, 2010, 5:10pm UTC](https://forum.kirupa.com/t/motion-tracking-flv-video-a-little-bit-sketchy/307761 "2010-04-09T17:10:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![BadgerFarmer](https://avatars.discourse-cdn.com/v4/letter/b/c89c15/32.png) [@BadgerFarmer](https://forum.kirupa.com/u/BadgerFarmer)\
**Post date:** [April 9, 2010, 5:10pm UTC](https://forum.kirupa.com/t/motion-tracking-flv-video-a-little-bit-sketchy/307761/1 "2010-04-09T17:10:36Z")

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Hi,

I’ve been fiddling around with After Effects and Flash, exporting tracking data from the former and using it to distort a bitmap in the latter:-

[http://www.nooberal.co.uk/trackingtest/](http://www.nooberal.co.uk/trackingtest/)

The test works well locally; though online I run into problems where the tracked bitmap slips from the FLV on which it sits.

What binds everything together is an FLVPlaybackComponent firing CUE\_POINT events, which provide the location of the four corner points used by an instance of Flash Sandy’s [DistortImage](http://www.flashsandy.org/blog/distortimage-in-as3.html) class.

It’s not about jerky playback. It’s about the bitmap remaining synchronised with the FLV, regardless of playback integrity. It’s almost as though the CUE\_POINT event isn’t being fired when the FLV stutters (next thing to check after the weekend).

Is there anything I can do, has anyone experienced anything similar, or am I reliant on the host being able to serve the FLV at sufficient speed (out of interest, the video is currently coming from a dedicated video streaming server - what goes quicker I don’t know)?

Am I even making sense?

Thanks in advance,