(Probably IgorBeg could demonstrate this quite well) but here is a way.

Using a "bounce" track is a way GG explained how to do this and the steps are something like this for a Video track:

- edit video track and change speed wherever

- add a new video track and move it down below the edited video track

- in Cut and Paste mode, highlight the whole video track, RMB click on new video track to get the popup and highlight under the "Shared Track" column, the Video track to use and click OK

- put in your masks where you want them on the main Video track

- add BoxBlur plugin to the second shared track

Here is streamable showing it works. I personally could not follow these directions to set it up myself but used what GG did.

https://streamable.com/jcqo8z

On Thu, Apr 23, 2020 at 3:23 PM deim31 <deim31@gmail.com> wrote:

Hi,

I made small tutorial from mobile screen record. I changed speed and
when I realized I wanted blur some region I tried this:

try #1:
1) copy region from video to new video track
2) set mask for region
3) add blur effect

But it doesn't work - what I copied is not what I pasted

try #2:
1) copy whole track to new video track
2) and 3) is identical to #1

But speed didn't copy => argh...

try #3:
1) copy whole track to new video track before speed modification
2) gang edits and edit speed (copied to second track)

This worked well.

But there may be a bigger project where I realize I need to copy track
with modified speed so my question is how to do it when I didn't planned
edits well and need to copy region from track with changed speed.

Thanks ;-)
deim

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