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-   -   HV20 slow-motion clips (https://www.dvinfo.net/forum/canon-vixia-series-avchd-hdv-camcorders/91111-hv20-slow-motion-clips.html)

Ali Husain April 9th, 2007 05:19 PM

HV20 slow-motion clips
 
someone here might find these useful. note that the canon footage was shot when it was much darker. i didn't know i'd be comparing these two cameras or sharing these clips with anyone outside of friends: there are some flaws in the comparison. details are below:

http://www.bakraa.com/slowmo/

(try not to crash my server: please right click and download)

running_hv20_720p.mp4 - 14.2MB: CC'd canon footage
running_hv20_original_720p.mp4 - 8.9MB: original canon footage (shot 1080i60@1/500)
running_hvx200_720p.mp4 - 8.2MB: CC'd panasonic footage (shot 720p60@1/500-i think)

issues and details:
- the CC'd canon file is at a higher bitrate than the others (not intentional: didn't make much difference though)
- the canon footage was shot in, to use the scientific term: "lowish" light conditions, during or right after sunset. the panasonic footage was shot in the very late afternoon. the canon footage was shot last week. the panasonic footage was shot last august.
- the canon footage was shot using a wide-angle lens (that sucks up stray light like Hades) and no shade/mattbox. the panasonic was shot with the built-in shade and no extra glass.
- grey t-shirt in the panasonic footage; brown shirt in the canon, but the same dark blue running sweats in both.
- the panasonic footage is color-altered more than the canon footage
- almost no cloud cover in both shoots: fwiw, a very clever person could estimate the absolute amount of light falling on the scenes by noting the position of the sun (length of the shadows), time of year, location, etc.

settings:
canon:
1080i60, 1/500th(i think), TV-mode, aperture probably wide open, image probably gained up (don't have control over this of course), "shade "white balance (i think), will have to double check these--but i think: custom settings: contrast -1, detail -1, brightness -1
panasonic:
720p24, 1/500th(i think), no idea what the aperture was (definitely not wide open), probably: cinelike D + cine-like matrix

workflow:
panasonic: 720p60@1/500th->p2->hdlink->cfhd->vegas->24p->h.264
canon: 1080i60@1/500th->hdlink->cfhd->vegas->24p->h.264

Ian Albinson April 9th, 2007 05:34 PM

Wow! How is the HV20 footage treated in the NLE?

Johan Bunis April 9th, 2007 05:36 PM

Dont find the words, that look absolute fantastic!

But I dont understand how you did that, searching on google aboute "hdlink" and after that Cineform but dont see the workflow yet (sorry)

Please, help me out to understand, have you done 1080i to 60P with help of downsize it to 720P? How mutch slowmotion is it, 50%?

Excuse my bad english, this is my first post..

// Johan


edit: Can I get the same result in Premiere Pro 2.0, with help of the Cineform?

George Anthonisen April 9th, 2007 06:04 PM

I think he is saying that Cineform was used for the capture... Sony Vegas was the editor that did the rest (slo mo... conversion...)

Joey Atilano April 9th, 2007 09:37 PM

Looked awesome to me

Robert Ducon April 9th, 2007 10:20 PM

In "running_hv20_original_720p.mp4 " the person looks to be running slo mo to me, despite you listing it as original footage. So, original after slomo.

Which wide-angle lens are using? It looks fantastic! I have an old Sony but it vignette's more than I'd like on full-wide. Does your lens vignette?

The canon footage is very sharp, and I see no grain at all - for lowlight, of any camara, it's great.

Rafael Lopes April 10th, 2007 05:59 AM

Ali, you weren´t kidding on you other review about the slow motion being as good as the hvx´s. What was you workflow to obtain such realistic slow motion? I tried a couple of times on premiere and it comes out very jittery. Yours is perfect.

Glenn Thomas April 10th, 2007 07:46 AM

Slow motion can be done without any effort in Vegas just by setting the plackback rate of a 60i/50i clip to 0.5. Of course the progressive mode setting in properties also needs to be set to interpolate fileds.

No idea how it would be done in Premiere or if it's possible.

Steven White April 10th, 2007 08:04 AM

Just change the clip duration in Premiere Pro - and it usually works. Apparently Premiere Pro CS3 should be even better at this. There are also ways to pull it off in After Effects.

As usual, you have to be careful about field settings, as the basic process is converting 60 fields to frames.

-Steve

Rafael Lopes April 10th, 2007 08:09 AM

I tried shooting with the A1 at 1/120 shutter, using 25F and then I imported it to a 25F timeline on premiere pro 2.0 and slowed the footage down with "properties-->speed". But it looked nothing like this.

Toenis Liivamaegi April 10th, 2007 08:46 AM

Raf, 25F on A1 is no-go for slo-mo.
Shoot in 50i (if PAL) with shutter at 100 to get realistic 1:2 slo-mo with realistic motion blur.
I don`t know if you have AE 7 but it does a really great job with time remapping via graph editor, google for tutorials.

Cheers,
T

Rafael Lopes April 10th, 2007 09:28 AM

Quote:

Originally Posted by Toenis Liivamaegi (Post 657423)
Raf, 25F on A1 is no-go for slo-mo.
Shoot in 50i (if PAL) with shutter at 100 to get realistic 1:2 slo-mo with realistic motion blur.
I don`t know if you have AE 7 but it does a really great job with time remapping via graph editor, google for tutorials.

Cheers,
T

Thanks, Toenis. I have to give that a try. Apparently the new version of premiere will be able to handle time warp/slow motion as good as AE. I have AE but I would really rather being able to do everything on premiere.

David Garvin April 10th, 2007 11:16 AM

Quote:

Originally Posted by Robert Ducon (Post 657197)
In "running_hv20_original_720p.mp4 " the person looks to be running slo mo to me, despite you listing it as original footage. So, original after slomo.

I have this same question. Is that clip 'original after slomo?'

EDIT to note: I guess that is the case. In this situation the word 'original' simply means no color correction?

Tomas Chinchilla April 10th, 2007 11:21 AM

Quote:

Originally Posted by Rafael Lopes (Post 657396)
I tried shooting with the A1 at 1/120 shutter, using 25F and then I imported it to a 25F timeline on premiere pro 2.0 and slowed the footage down with "properties-->speed". But it looked nothing like this.

That's because you shot it in 24p (F), A1 footage will run circles around these type of cameras, you need to be shooting at 50i/60i at a speed of 120 of higher, then de-interlace to 60p using interpolation and add to a 24p timeline.

I hope I didn't get you confused.

Rafael Lopes April 10th, 2007 11:28 AM

Quote:

Originally Posted by Tomas Chinchilla (Post 657545)
That's because you shot it in 24p (F), A1 footage will run circles around these type of cameras, you need to be shooting at 50i/60i at a speed of 120 of higher, then de-interlace to 60p using interpolation and add to a 24p timeline.

I hope I didn't get you confused.

My nose is bleeding, but it´s ok. ;)

Tomas Chinchilla April 10th, 2007 11:41 AM

Quote:

Originally Posted by Rafael Lopes (Post 657555)
My nose is bleeding, but it´s ok. ;)

LOL, I certainly didn't mean to do that.

Ian Albinson April 12th, 2007 11:58 AM

Any update to this regarding workflow after capture?

Rafael Lopes April 16th, 2007 12:37 PM

Ok, I shoot interlaced with a shutter of 1/100, I copied it to premiere, then I exported it and hit "deinterlace", then the next step would be to open the deinterlaced file on a 25P timeline...except that my premiere DOESN't have a 25P timeline. Any pal users out there using premiere to give me a hand with this?

Wes Vasher April 16th, 2007 12:46 PM

Okay, this may seem like a silly question but can you turn 60i video into 60 unique frames or is it only possible to de-interlace to 30 unique frames? My understanding is you have to de-interlace to 30p and then time strech that.

Ali Husain April 18th, 2007 04:16 AM

Quote:

Originally Posted by Ian Albinson (Post 658972)
Any update to this regarding workflow after capture?

sorry about the delay in replying. and thanks for all the nice comments! my flow was this:

1080i60 -> vegas 1080p24 project -> change clip speed to 40% (so that one 60i field is now one 24p frame) -> 24p render

note you have to shoot at a much higher shutter speed than you would normally, because you are creating an illusion that the real motion was at 40% speed, and something moving at 40% speed has much less motion blur.

Ian Albinson April 18th, 2007 07:23 AM

Excellent, thanks for that info. It's good to know how you got such fantastic looking motion.

Ali Husain April 20th, 2007 08:50 PM

it's a 43mm raynox hd-6600, i believe. i got it from b&h a few years ago for a little over $100:

http://www.bhphotovideo.com/bnh/cont...ughType=search

it's full-wide in that clip. much better than the other WA lenses i'd tried in the past (which had unuseable CA).

[QUOTE=Robert Ducon;657197]

Which wide-angle lens are using? It looks fantastic! I have an old Sony but it vignette's more than I'd like on full-wide. Does your lens vignette?

Owen Meek May 15th, 2007 02:22 PM

nice work!

John Robertson May 15th, 2007 07:12 PM

It looks quite nice! the feel seems to be just about the same, are these completely uncompressed clip? wondering because my dual core didn't seem to be playing it back properly (maybe I need a better video card?)

the color difference is quite dramatic though, was this shot at pretty much the same time?

Austin Meyers June 1st, 2007 04:41 PM

slo mo using JES and Cinema Tools
 
I've been playing around with JES and Cinema tools doing some slow mo stuff check it out...

there is a readme file in there about the workflow etc...

http://file.meyersproduction.com/hv20/Slo-Mo/

Rati Oneli November 2nd, 2007 08:25 PM

slow motion workflow for HV20
 
Can someone be so kind as to post a workflow for HV slowmotion for Final Cut users?

There are all kinds of FCP plug ins out there, TMTSFree and Nattress G Map Frames, but I am not sure they are the best. Actually Nattress is quite complex.

It will be greatly appreciated.

Thank you

Ali Husain December 5th, 2007 08:59 AM

for whatever it's worth, i added the sony ex1:

http://dvinfo.net/conf/showthread.php?t=109555

Doug Cummings December 6th, 2007 06:19 PM

ex and hvx
 
Looking at your own shots so far... does the EX offer any advantage generally in slo-mo over the HVX? (differences in theory/bits/compression don't necessarily = practical output)
Thanks for posting these

Kaushik Parmar December 25th, 2007 08:31 PM

Quote:

Originally Posted by Ali Husain (Post 787643)
for whatever it's worth, i added the sony ex1:

http://dvinfo.net/conf/showthread.php?t=109555

Ali Husain,

I have seen your fantastic clips, all are very nice, I would appreciate if you can post Full HD version of same, is it possible for you? If your file size is bigger than below website is allow us to upload file up to 300MB.

www.uploading.com

I hope you will try to upload those original files, thanks.

Kaushik


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