What shutter speed for 1080P Slow Motion?

GH2 vs HVX200 undercranking/overcranking quality?

GH2 vs HVX200 undercranking/overcranking quality?

Barry_Green said:
Yep, my bad, I was thinking GH2.
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I would love to know from Barry (or anyone else) how the GH2 slow/fast motion quality compares to the HVX200a undercranking/overcranking quality??

Thanks in advance!

Hugh
 
Got to 2:00 in this video and you will see 50p shot at 1/120 and the smooth effect at .333 slowdown without twixtor. A shutter any higher than 1/120 will start to strobe. However, if the footage needs sharp individual frames, then you may have to go to 1/250 or 1/500. I will use higher shutter if i'm planning on software stabilization like Mercalli etc.

 
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Indyreel said:
Barry,

After I shoot this footage (like my 1080P footage) can I transcode this 720/60p Slo-Mo footage to Cineform HD 24p? As I am editing this with the 1080p footage.

Also, can I switch (back and forth) from FHD and SH mode while filming, without messing the footage up?

Thanks
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Also, I did not see a 1/120 option in the GH1 I'm using, so I shot the scene 720/60 at a shutter of 1/125. Will this still give awesome slo-mo?
 

Unhacked GH1 then. Now hacked to GH17 :). 720p60 AVCHD. 1/250 shutter instead of 1/125 cuz the subject was moving too fast. Interpreted the footage by 23.976 fps. Applied After Effects CS5 Time Warp with 25% speed. Overall speed is 10% of the original. 3s footage was stretched to 30s.
 
Indyreel said:
Barry,

After I shoot this footage (like my 1080P footage) can I transcode this 720/60p Slo-Mo footage to Cineform HD 24p? As I am editing this with the 1080p footage.

Also, can I switch (back and forth) from FHD and SH mode while filming, without messing the footage up?

Thanks
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Can anyone answer these questions for me? I would really appreciate it, as I'm waiting to edit.
 
You can switch back and forth. Your post workflow depends on your editing software; what are you using?
 
Indyreel said:
I'm using Avid MC5
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Conveniently enough, so am I. MC is the system I'm most familiar with. So if your final output is to be 1080p23.976, make a project in that format. Import all your 1080p24 clips to DNxHD. Make a different project in the 720p60 (actually 59.94) format. Import all your slowmo footage in that project to DNxHD. Go back to the 1080p23.976 project. Open the 720p bin, and move the master clips into the 1080p project. Done. Now when you add a 720p clip to the timeline, MC automatically speed the footage to 250% to retain realtime play. To slow it back down to 100%, open the Motion Effect Editor for the clip, promote the motion adapter, which will change it to a Timewarp. Change the 250% value to 100% and you're done. If you use 100%, the frame interpolation method doesn't matter.
 
That's awesome! Thank you very much.

One last thing. I've been transcoding my 1080p footage to cineform 24p. What should I do about the 720p footage? i.e. can I transcode that to cineform, then follow your instructions above?
 
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Indyreel said:
That's awesome! Thank you very much.

One last thing. I've been transcoding my 1080p footage to cineform 24p. What should I do about the 720p footage? i.e. can I transcode that to cineform, then follow your instructions above?
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You don't need to transcode any of it to cineform: DNxHD is just as good, if not better, and is managed internally by MC. That's one of Avid's biggest strengths: media management. File>Import the AVCHD files directly to DNxHD inside of MC and you won't have to worry about it.
 
The reason I'm using Cineform is to remove the 60i wrapper. Does Avid MC5 automatically do this when you import?
 
Indyreel said:
The reason I'm using Cineform is to remove the 60i wrapper. Does Avid MC5 automatically do this when you import?
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Ah, forgot, no it doesn't I've always just used the 24p patches; they're stabile and look great. If you do shoot in 60i you'll have to use the Cineform, but I'd still recommend importing to DNxHD.
 
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