Slow motion HELL-P!! at DVinfo.net

Rafael Lopes · September 22nd, 2006, 01:32 AM

Hi,

I just finished a 10 episode program for spanish tv and I notice that all the movinf sequences (pans and travellings) that are in slow motion have some sort ciclic "tilt". I started thinking that this might be because when I decrease the clip speed on premiere it doubles some frames and this is more evident during moving shots. Now I urgently have to find out another way to convert these sequences to slow motion that won't affect the quality so drasticly. I even thought about simply not using slow motion on theses sequences but these videos must have a certain amount of time and if I don't use slow motion they won't have the required time. I could not replace these shots but they are very important. So, bottom line, I need theses same shots on slow motion (they must take longer than the speed they were originaly shot with). This is a problematic issue, since I ALWAYS set my footages' speed to 94% (I shoot with the FX1 using CF25). Any advice?...NOW!!!

P.S - I followed some leads from another slow-motion threads but nothing worked (flame blend, deinterlace, flicker removal)

Rafael Lopes · September 22nd, 2006, 02:03 AM

Ok, I've got TWIXTOR installed and the slow motion does look good, but somehow the clip still has the same duration as the original (wth?!) and I need it to be longer. Tips?

Tom Hardwick · September 22nd, 2006, 02:17 AM

When you select a clip and put it into slo-mo (50%, say) then you need to allocate space for the clip to grow - in this case it'll double its length. Could this be why your clips are the same length?

And you process ALL your FX1 footage on the timeline to 94%? I hope you realise you're taking a huge quality hit if you do such processing to the image.

You need to tell us more such as explain what you mean by 'ciclic tilt', whether you're shooting PAL or NTSC, if it's HDV or DV.

tom.

Rafael Lopes · September 22nd, 2006, 02:23 AM

What I mean ciclic tilt is that from time to time the image seems to "jerk" (the intervals between each "jerk" keep the same pace). I'm shooting HDV PAL, to be
exported to quicktime in SD.

As for allocating space for the clip to grow it has plenty of space in front of the clip, so I should be able to see it grow, right? Do you have any tips on using TWIXTOR?

Tom Hardwick · September 22nd, 2006, 07:06 AM

Sorry, no twixtor tips. I use the Canopus Storm slo-mo that is key-framable in its rate. Beautiful.

September 22nd, 2006, 01:32 AM	#1
Rafael Lopes Trustee Join Date: Sep 2005 Location: Rio de Janeiro Posts: 1,239	Slow motion HELL-P!! Hi, I just finished a 10 episode program for spanish tv and I notice that all the movinf sequences (pans and travellings) that are in slow motion have some sort ciclic "tilt". I started thinking that this might be because when I decrease the clip speed on premiere it doubles some frames and this is more evident during moving shots. Now I urgently have to find out another way to convert these sequences to slow motion that won't affect the quality so drasticly. I even thought about simply not using slow motion on theses sequences but these videos must have a certain amount of time and if I don't use slow motion they won't have the required time. I could not replace these shots but they are very important. So, bottom line, I need theses same shots on slow motion (they must take longer than the speed they were originaly shot with). This is a problematic issue, since I ALWAYS set my footages' speed to 94% (I shoot with the FX1 using CF25). Any advice?...NOW!!! P.S - I followed some leads from another slow-motion threads but nothing worked (flame blend, deinterlace, flicker removal)

September 22nd, 2006, 02:03 AM	#2
Rafael Lopes Trustee Join Date: Sep 2005 Location: Rio de Janeiro Posts: 1,239	Ok, I've got TWIXTOR installed and the slow motion does look good, but somehow the clip still has the same duration as the original (wth?!) and I need it to be longer. Tips?

September 22nd, 2006, 02:17 AM	#3
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	When you select a clip and put it into slo-mo (50%, say) then you need to allocate space for the clip to grow - in this case it'll double its length. Could this be why your clips are the same length? And you process ALL your FX1 footage on the timeline to 94%? I hope you realise you're taking a huge quality hit if you do such processing to the image. You need to tell us more such as explain what you mean by 'ciclic tilt', whether you're shooting PAL or NTSC, if it's HDV or DV. tom.

September 22nd, 2006, 02:23 AM	#4
Rafael Lopes Trustee Join Date: Sep 2005 Location: Rio de Janeiro Posts: 1,239	What I mean ciclic tilt is that from time to time the image seems to "jerk" (the intervals between each "jerk" keep the same pace). I'm shooting HDV PAL, to be exported to quicktime in SD. As for allocating space for the clip to grow it has plenty of space in front of the clip, so I should be able to see it grow, right? Do you have any tips on using TWIXTOR?

September 22nd, 2006, 07:06 AM	#5
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	Sorry, no twixtor tips. I use the Canopus Storm slo-mo that is key-framable in its rate. Beautiful.