Old 07-10-2018, 07:27 AM   #1
Winfield
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Default Can Reaper stretch videos?

When time stretching a video item, only the audio is affected - am I doing something wrong?.

Thanks.
-W
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Old 07-19-2018, 06:52 AM   #2
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Not that I would have ever tried, but I would argue it probably can't (satifyingly)

The thing is, for time stretching video you have essentially three options:

1.) Frame cutting/doubling
2.) Frame blending
3.) Motion Estimation (optical flow)

Whilst the first two would be quite easy to implement, they both look pretty terrible in most cases. The third can look quite good, but is potentially a bit more difficult to get right (and is computationally expensive)

Given that Reaper is not really designed as a video tool, I thisnk this would go a bit far...

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Old 07-19-2018, 08:32 AM   #3
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yes you can stretch video with
- item properties play rate
- alt-drag item edge (playrate)
- stretch markers

in this tutorial I show how to ramp a video playback rate down, then up again with text generated and automated to follow.

https://reaperblog.net/2017/06/slow_mo_titles/
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Old 07-19-2018, 09:21 AM   #4
force_redo
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I stand corrected.

I like this software already and yet it still surprises me.

(In cases where you don't start out with high speed footage, you will see the effects I was mentioning, though)
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Old 07-19-2018, 10:29 AM   #5
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(In cases where you don't start out with high speed footage, you will see the effects I was mentioning, though)

of course, but sometimes that's ok. For my tutorials I'm often speeding up footage where there's no action, and sometimes I need to freeze frame something to fill a gap where I've replaced dialog.
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Old 07-30-2018, 10:37 AM   #6
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Default Brilliant.

Thanks Epic-Jon

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Old 08-03-2018, 06:51 AM   #7
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Just a follow up Q - Where do I find the JS effect used to desplay the in-video text?
(as demonstrated in this video)
https://reaperblog.net/2017/06/slow_mo_titles/[/QUOTE]

Thanks
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Old 08-03-2018, 07:38 AM   #8
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OK - found out for myself.
If anyone else was wondering -
Subscribe to the Reaperblog and thou shall receive.

-W
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Old 08-03-2018, 09:29 AM   #9
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Quote:
Originally Posted by Winfield View Post
Subscribe to the Reaperblog and thou shall receive.
Truth
Amen
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