Slow Motion - What am I doing wrong?

[HenryTheHippo]

Hey friends,

I have a question about doing slow motion with my Canon XH A1:

I shot a video in 50i, and imported it to Premiere with project 1080i25p.
What I want to do is change the playback time to 50%, so that I can get 25 frames per second, which would be slow motion.

Even though I did not deinterlace the footage, as some say must be done, the preview in Premiere works fine, it's perfect slow motion.

Now my problem is:
When I export via the "Adobe Media Encoder..." tool, the exported file is just a 'regular' slow down of 25fps material.
It does not look like 0,5 x 50fps, but looks like 0,5 x 25fps.

It does not have any effect on the outcome footage wether I export with 50fps or 25fps, progressive oder upper/lower field first.

What am I doing wrong? How can I export it like I see it in preview?
Thank you! Phil

 

[t-unit]

shoot in 50i
Drop it in a 720p or 1080p timeline with 25 frames
Slow it down 50%
Render it as a 720p or 1080p file with correct interlace settings..

you should check your interlace settings, it should be on interpolate fields i think. And you write its a 1080i25p project, thats not correct, it has to be 720p or 1080p

 

[adrian.stucker]

Ok the best luck I've had is using after effects to do slow motion, and bypassing and speed features in PP.
s
pread the good word of the church of 60i/50i.

ok this is my work flow, from camera import in PP, take the file directly to after effects(im using cs3) before dragging the file to a new sequence, right click and select "interpret footage" , then conform the frame rate to 23.98. or 25 for pal

Now drag, the file to new time line, right click and select effect "time stretch" in my experience I've been able to stretch up to 240%, with out it looking faked. Make sure frame blending is TURNED OFF, it will make it look horrible.
then export to what ever format and you're good.

other thing to keep in mind for shooting good slow mo is keeping shutter speed above 1/120, just to keep it looking crisp. personally I like setting it at 1/500. Look at my other video.

good luck