Slow Motion in DaVinci Resolve With Optical Flow | Push That Button

Aug 15, 2023

Slow Motion in DaVinci Resolve With Optical Flow | Push That Button

Learn how to create super slow motion video in DaVinci Resolve. We take a look at the Optical Flow and Speed Warp tools and show you how to get super slow motion results! ► Download unlimited DaVinci Resolve templates with Envato Elements: https://elements.envato.com/video-tem…

Ever wanted to get super slow motion video in Davinci Resolve but you didn’t shoot in a high frame rate on set? Well now is your chance to get buttery smooth slow motion, way after you’ve shot your footage! Check out the latest installment in our Push That Button series.

You can download all the resources used in this video here: https://elements.envato.com/collectio…

Here’s what you’ll learn:

00:00 Introduction
01:51 TL:DR
02:47 How to use Optical Flow and Speed Warp
12:49 Slow motion with mixed results
14:33 When Optical Flow works perfectly!
18:20 Check out these wacky results
20:11 Comparing the footage
21:18 Outro

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Content

1.12 -> buttery smooth slow motion is impressive

3.52 -> when done well and luckily for us

5.92 -> working in this era most of our cameras

8.24 -> can shoot a relatively high frame rate

9.92 -> even the ones in your pocket but what

12 -> happens if onset you've only captured

13.679 -> maybe 25 or 50 frames per second and

16.16 -> when you get into the edit you think oh

18.08 -> i really wish i had shot that at 100 or

19.92 -> 120 or higher if your camera can do so

22.72 -> you think to yourself

24.08 -> is there a way that i can slow this down

26.32 -> in post and not have it look jittery

28.72 -> well i'm here to tell you that yeah

30.16 -> there kind of is and like bts said you

32.88 -> want it smooth like butter that's what

34.8 -> we're aiming for today

36.6 -> [Music]

40.879 -> so i'm tom from tuts plus i'm a

43.04 -> filmmaker with a decade's worth of

44.96 -> experience working in the camera and

46.399 -> lighting departments as well as editing

48.239 -> content i've always been a little bit

49.92 -> obsessed with speed ramps i know it's a

51.52 -> cliche but they look super cool this is

53.28 -> a show called push that button where we

54.96 -> dive a little bit deeper into settings

56.879 -> in post-production programs to make sure

58.719 -> that next time you come across them you

60.16 -> know how to use them today we're looking

62 -> at davinci resolve and we're looking at

63.68 -> a setting called retime and scaling but

66 -> more specifically within that setting

67.6 -> we're looking at two things optical flow

69.52 -> and speed warp and how they work

70.96 -> together to get buttery smooth slow

72.96 -> motion

73.84 -> way after you've even shot the footage

75.36 -> now this video is of course brought to

76.72 -> you by envato elements enviro elements

79.04 -> is a really easy to use subscription

80.799 -> service that gives you access to

82.64 -> millions of digital assets and not only

84.88 -> access but you get unlimited downloads

86.72 -> of those assets and i'm talking about

88.24 -> things like stock footage photography

90.64 -> great fonts and video templates for

92.72 -> programs like davinci resolve premiere

94.96 -> pro after effects final cut pro whatever

97.04 -> it is that you're working in jump on

98.96 -> there right now click a few buttons and

100.799 -> download these assets to use in your

102.399 -> projects right away the licensing is

105.04 -> really simple so check it out now and

107.04 -> subscribe today the link is in the

108.56 -> description below let's jump into the

110.399 -> tutorial though so just before we get

112.479 -> into the tutorial i will say as a bit of

114.799 -> a tldr this tool doesn't work all of the

118 -> time perfectly it's a really powerful

120 -> tool and these settings in combination

121.52 -> with each other get you some really

122.88 -> fantastic results you do have to be a

124.64 -> little bit careful with what kind of

125.92 -> footage you're using it on so i'll take

127.92 -> you through three different examples of

129.52 -> three different pieces of footage and

130.959 -> we'll show you a varying level of

133.2 -> results basically i will say at the

134.879 -> start though if you want to get the best

136.8 -> results using optical flow and speed

139.2 -> walk i think the right approach is to

141.12 -> find a piece of footage that has the

142.72 -> least amount of motion and complexity in

144.64 -> it already

145.84 -> and therefore you'll be able to slow

147.44 -> things down nice and easily the more

149.04 -> complex movement in the scene the harder

151.2 -> these tools have to work so

153.28 -> you know you don't get as good as a

155.28 -> result so i'll leave some time-coded

156.879 -> links in the description below if you do

158.319 -> want to skip forward to where it works

159.68 -> really well and to the cases where it

161.519 -> doesn't work as well uh but hey if you

163.76 -> want to see the entire process just sit

165.2 -> back relax and i'll take you through it

167.28 -> all right so first things first we've

168.48 -> got to open up davinci resolve

170.879 -> and i'm working in davinci resolve

172.56 -> studio 17. now this is a tool that is

176 -> only available in the paid studio

177.84 -> version there's a lot of great tools in

179.44 -> the free version of davinci resolve so i

181.12 -> definitely suggest you check it out but

182.72 -> these tools specifically optical flow

184.879 -> and speed walk they are in the paid

186.959 -> studio version of davinci resolve so you

189.28 -> can see here i've already started my

190.72 -> project so i'm just going to open this

192.159 -> up

192.879 -> and i've got these three pieces of

194.879 -> footage i mentioned i've got this group

197.2 -> of friends just walking through this

198.8 -> tunnel here having a chat with their

200 -> coffees i've got this lady unplugging

202.959 -> her tesla and i've got this piece of

204.72 -> footage of this guy doing a kickflip now

207.2 -> these are very different pieces of

208.879 -> footage this one here

210.879 -> not a huge amount of motion except for

212.56 -> the guy's hand movements this one here

215.2 -> not much motion at all

217.04 -> again except for her hand movements and

219.2 -> then this one here obviously a lot of

220.72 -> motion all of these are regular motion

223.12 -> 25 frames per second and we're playing

224.799 -> back at 25 frames per second here with

226.799 -> the exception of this shot here which

228.4 -> seems to be shot maybe a little bit

229.92 -> slower than normal motion maybe 30

231.519 -> frames or 40 frames per second again i'm

233.84 -> playing back at 25 so there is an

235.68 -> element of a little bit of slo-mo in

237.2 -> this already

238.56 -> all right so let's just zoom in on this

240.799 -> so we can see what we're working with

243.04 -> so i'm on a mac so all of my uh

244.959 -> keystrokes will be command uh if you're

246.64 -> on a pc

248 -> you know how to do it use control the

249.599 -> first thing you want to do is highlight

251.439 -> the clip here hit command r

253.36 -> or right click on the clip and go to

255.599 -> retime controls and you can see that

256.959 -> command r what that does is it gives you

259.28 -> this little drop down where it says 100

261.199 -> and you get the drop down arrow just

262.88 -> next to it if you click that it then

264.88 -> gives you a few more options and this is

267.12 -> the first part of our process here so

269.44 -> what we want to do is define a part in

271.52 -> the clip where we want it to slow down

273.6 -> now i could slow the entire clip down

275.36 -> but uh i think it works better when we

277.12 -> kind of like speed ramp into it and

278.639 -> speed ramp out of it so we'll find a

280.24 -> place in this clip where we want it to

281.6 -> slow down

282.639 -> maybe we'll do it just as he

284.479 -> moves his arm down there so slow from

288.8 -> here maybe what we can do hit this

290.96 -> little black arrow next to 100

294.16 -> hit add speed point then we'll go

296.08 -> through and we'll find where we want it

297.44 -> to speed up again so

299.199 -> maybe from here where he uh points to

301.28 -> his chest little arrow there add speed

303.44 -> point so that's actually done nothing so

305.84 -> far um but you can see we've now got

308 -> options for each part of the clip here

309.759 -> so then obviously what we're talking

311.039 -> about in this video is making things

312.88 -> slow so how do we do that we go to the

315.12 -> middle part of this clip here 100

317.52 -> basically tells us that it's playing

318.8 -> back at 100 of its speed if we click

321.199 -> here go change speed and we drop it down

323.039 -> to let's say 25 of its speed you can see

325.84 -> there immediately it's uh lengthened the

327.919 -> clip and let's play it back and you're

329.759 -> going to see amazing buttery smooth slow

332.16 -> motion results

335.28 -> of course you're not actually all we've

336.8 -> done is just stretch the clip out we

338.8 -> haven't actually increased the speed at

340.479 -> all so how can we start getting

342.24 -> something that's usable and not jittery

344.479 -> well if you highlight the clip again and

346.4 -> go up to the inspector and then you come

349.199 -> down to retime and scaling it's going to

352.639 -> give you a few options we've got retime

354.72 -> process and motion estimation here and

357.28 -> these are the two that we'll be focusing

358.72 -> on we won't really focus on scaling or

360.639 -> resize filter for the sake of this

362.96 -> tutorial so in retime process here

365.6 -> project settings by default uh is

367.68 -> nearest which is what we're currently

369.199 -> seeing and to explain what that's doing

371.28 -> you can see here

372.56 -> basically it's taking the amount of

375.12 -> frames that you've slowed it down by in

376.88 -> this case we've slowed it down by a

378.4 -> factor of four and then holding each

381.28 -> frame for the equivalent of that amount

383.6 -> of frames so an easy way to show that is

385.919 -> if i uh tap along i'm just tapping my

387.68 -> arrow keys here to move through the

389.039 -> frames one two three four

391.36 -> one two three four one two three four so

393.919 -> every fourth frame on the timeline is

396.16 -> actually a new frame and the three in

398.08 -> between are just frames that are held so

400.24 -> that's what nearest does and let's play

401.52 -> it back again and we'll see the jittery

403.44 -> mess that it is so you can see there one

405.919 -> two three four one two three four one

407.039 -> two three four uh it's not usable what

409.599 -> can we do we can go to retime process

412.479 -> here in our retime and scaling setting

414.479 -> and instead of nearest we can hit frame

416.24 -> blend and i'll find a better frame uh

418.639 -> for us to land on here so we can see an

420.72 -> example have a look at the guy's arm on

423.199 -> the left of frame here uh

425.36 -> right now it's pretty sharp if you go

427.12 -> down to frame blend immediately you're

428.96 -> going to see

430.08 -> an effect so effectively what that's

431.919 -> doing is taking frame a and frame b

434.88 -> moving frame b

436.4 -> down to frame c and adding a new one in

438.24 -> between a new b

439.599 -> uh actually don't think i explained that

441.36 -> in much of a clearer way but basically

442.8 -> it's taking two frames that are next to

444.479 -> each other and blending them together to

446 -> create a third frame in between so

447.919 -> effectively uh for every two frames now

450.24 -> we have an extra frame so we're we're

452.16 -> increasing the amount of frames by a

453.759 -> factor of uh a third so we'll play that

456.479 -> back now let's uh

458.72 -> let's just play it back with nearest so

460.8 -> we can remember how jittery it was this

463.36 -> is with nearest chop chop chop chop chop

465.919 -> and go back to here we'll go nearest

468.56 -> change it down to frame blend and play

470.56 -> it back

472.319 -> and you can see there it's actually

474.639 -> starting to be smooth

476.56 -> obviously there's a lot of chop in the

478.319 -> big motion uh and that's not usable but

481.28 -> if you have a look at the girls faces in

483.759 -> this and even the guy on the right hand

485.199 -> side of frame um you can see we're

488.16 -> getting a lot

489.68 -> smoother motion compared to uh nearest

492.72 -> back to nearest again chop chop chop

494.72 -> back to frame blend again

496.4 -> all right it's slower it's starting to

498.96 -> get smoother is it usable no it's not

501.759 -> the next one we'll move down to then is

503.599 -> optical flow so where frame blend

506.08 -> effectively took two frames and using an

507.919 -> opacity layer just blended them together

510.16 -> optical flow basically analyzes all of

512.719 -> the pixels in the array uh everything

514.719 -> that's come through on the sensor

515.919 -> everything that's in your shot right

517.919 -> here and then it makes a calculation

520.56 -> based on how slow you want it so in this

522.159 -> case we want to slow this down by a

523.839 -> factor of four down to 25 percent uh so

526.48 -> for every one frame we actually need an

528.64 -> extra three frames now so it goes

530.72 -> alright so i know this pixel is here and

532.8 -> it's white in frame one

535.04 -> and by the time we get down to frame

536.72 -> four that pixel is moved to here so what

539.12 -> happens in between well this is where uh

541.92 -> optical flow comes in it kind of guesses

544.24 -> and makes it up you know it's a very

546.399 -> calculated guess it's a very intelligent

548.08 -> machine uh but it guesses what's

549.92 -> happening in those three frames in

551.279 -> between and

553.04 -> creates a new pixel in there and it does

554.64 -> this for every single pixel in the array

556.32 -> so uh you know on its own it would look

558.56 -> like it's just going you know as the

560.24 -> crow flies from here to here but when it

562.48 -> uh analyzes this against every other

564.16 -> pixel in the array it goes well it can't

565.519 -> go from here to here because then

566.72 -> there's all these other pixels happening

568.16 -> in between so um you know

570.959 -> using far more complex math than i can

572.959 -> even fathom to understand it knows where

575.12 -> to put things so

576.399 -> enough babble let's play it back uh

578.48 -> we'll play back with frame blend just uh

580.48 -> so we know where we're at this is frame

582.24 -> blend still getting jittery but we're

583.76 -> starting to feel it slowing down

586.24 -> and then we'll go to optical flow and

587.839 -> we'll play that back here

589.36 -> so you can already see how smooth that

592.56 -> motion is but there's some very obvious

595.36 -> flaws in this image uh when i play it

597.68 -> back with optical flow here and you're

599.839 -> probably thinking tom get to the point

601.92 -> you said you're going to give me buttery

603.519 -> smooth slow motion

605.44 -> i'm going to give you buttery smooth

606.72 -> slow motion but you know to to get there

608.72 -> we've got to understand a little bit of

610 -> how all of this works so let's move down

611.92 -> to re-time process here so we're staying

613.92 -> on optical flow we'll move to retime

615.6 -> process the project settings by default

618.16 -> are standard faster that basically just

620.16 -> means that we can play this back in real

621.92 -> time at 25 frames per second and we can

624.079 -> see uh what's happening it means we

625.92 -> don't have to render things and we can

627.279 -> kind of get an idea of uh with some

629.44 -> higher settings what things are likely

631.519 -> to look like have a look really just at

634.399 -> his arms if you focus on the guy on the

636.399 -> left his arms as he moves through the

638.32 -> image

639.6 -> you're getting things that just feel

640.959 -> uncanny um but if you have a look at the

642.959 -> girl's faces things feel normal because

644.88 -> there's not a lot of motion and the

647.2 -> algorithms i guess aren't doing as much

649.2 -> of the heavy lifting in those parts so

651.6 -> um yeah have a look at his arm here

653.519 -> you'll notice things that we clearly

655.839 -> want to clean up and how do we

657.519 -> especially there you can see have a look

659.2 -> at his shirt here as i move through it's

661.04 -> just unnatural the way it kind of warps

663.519 -> together just doesn't feel right

665.6 -> all right so if we move all the way

666.959 -> through to speed warp uh basically what

669.76 -> speed warp does is it takes everything

671.839 -> that

673.04 -> is in davinci resolve in terms of the

674.88 -> neural engine or the ai enhancements all

677.6 -> of the optimization for whatever

678.959 -> graphics card you're using or whatever

680.64 -> cpu you're using um it takes everything

683.12 -> into account and it uh it puts

685.839 -> everything to work

687.2 -> to analyze all those pixels and try to

688.959 -> get you the smoothest motion possible so

691.12 -> we'll go all the way through and we'll

692.32 -> go to speed warp and we'll try to play

693.76 -> this back here

696.48 -> and

697.839 -> immediately we're back to the jittery

699.279 -> frames and you're going tom again get to

701.6 -> the point where's the buttery smooth

703.2 -> slow motion well because we're doing so

706.32 -> much under the hood here and uh it's so

709.04 -> process intensive

710.88 -> we're not going to be able to play it

711.92 -> back straight away so what we can do to

713.68 -> see if it's actually worked is we can

715.279 -> right click on the clip here and we can

716.72 -> go to render in place it's going to ask

719.04 -> you a few questions here just stick with

720.8 -> the defaults that come up for prores and

723.36 -> then it's going to ask you to save it

724.959 -> somewhere so i'm just going to save it

726.16 -> in a folder on the desktop for now

729.04 -> it's going to take some time for this

730.32 -> clip it'll probably take about a minute

732.399 -> and 30 seconds uh i'll see you when

734.8 -> that's done

737.36 -> all right so that's finished now let's

738.639 -> see if it's actually worked one thing to

740.639 -> note when you do render in place you'll

742.16 -> notice here we no longer have any of our

744.56 -> speed points that we added so if i go to

746.16 -> command r you'll see that we still have

748.079 -> our little drop down here but our speed

749.839 -> points have removed and now the whole

751.2 -> clip is again saying that it's at 100 of

754 -> its speed so basically it's been

755.519 -> rendered it's been reformed and

757.2 -> effectively dropped back into the

758.959 -> timeline where we had it now if you do

760.48 -> want to keep those speed points and you

761.68 -> want to continue working on your edit

762.959 -> with those speed points intact you won't

764.639 -> be able to render in place but this is a

766.32 -> good quick way to actually work out if

768.079 -> it's worked so let's play it back now

770.399 -> and we'll see where we get to

772.079 -> remembering that we have our speed uh at

774.56 -> regular 25 frames at the start then we

776.88 -> slow down to a quarter of that and then

778.639 -> we speed ramp back out of it playing

780.32 -> back now

782 -> [Music]

786.56 -> all right it's actually pretty good look

789.279 -> there's parts in the image that i'm sure

791.04 -> you're seeing as well that are

793.6 -> a little bit odd but i think it's

795.839 -> it's pretty usable let's let's play it

797.76 -> back again and we'll talk through it so

799.2 -> you can see his hand and his shirt here

802 -> are a lot cleaner than they appeared

803.839 -> when we had the project settings on

805.76 -> standard faster or even standard better

808.24 -> and that's all the computing power

809.44 -> that's gone into making sure it knows

811.04 -> where all these pixels are

813.04 -> but there's still a few things

814.639 -> especially in his hand on the faster

816.399 -> movements that just feel a little bit

818.399 -> weird and

819.68 -> have a look here like we kind of lose

821.68 -> his hand

823.04 -> we lose his finger for a second there

824.959 -> his finger jumps up

826.639 -> it disappears it's back it disappears

828.639 -> it's back uh and then we kind of lose

831.04 -> his hand in a lot of kind of wobbly

832.32 -> motion blur but for the sake of this

834.8 -> let's just zoom in

836.639 -> uh let's just reframe a little bit and

840.399 -> look at the faces of these girls here

842.639 -> now remember before we did this this was

844.24 -> just normal 25 frames per second footage

847.76 -> that is smooth slow motion to me

850.24 -> i think there's a lot to be said about

852.079 -> these tools in conjunction with each

853.44 -> other but as i mentioned at the start

855.04 -> there are some moments where it doesn't

856.88 -> work

858.16 -> i guess exactly as you want it to so be

861.04 -> careful about where you put those speed

862.959 -> points in uh making sure that if there

865.199 -> are any wild movements to kind of move

867.76 -> around that way you want the slow motion

869.36 -> to happen let's move on to the next clip

871.04 -> now uh and we'll see if we can get a

872.56 -> better result so moving on to this lady

875.279 -> here unplugging the tesla we'll watch it

877.36 -> through very quickly she's just walking

879.519 -> at normal motion she comes in she

881.12 -> unplugs the tesla and then she hangs it

883.68 -> back up on the hook over there so the

885.199 -> first thing i'm going to do is hit

886.48 -> command r again and get to our retime

888.72 -> controls and this time we're actually

890.88 -> going to do a bit of a smoother speed

892.16 -> ramp we'll pick our speed points i'm

893.839 -> just going to pick here and our out

895.76 -> point around here

897.36 -> add speed point now

899.36 -> at the start here she comes in

901.519 -> normal motion i want to bring that in

903.68 -> let's say

904.72 -> 400 will really over emphasize this 400

907.839 -> and on the way out also at 400 percent

911.68 -> so we'll play that back now 400 on the

913.68 -> way in into 100 and back out at 400

917.92 -> but these speed changes happen without

920.88 -> any curve so how can we make this feel a

922.959 -> little more uh dynamic if you right

924.959 -> click on the clip and go to retime curve

927.36 -> it'll drop down this little arrow here

929.12 -> if you drop that down again make sure

931.04 -> time speed is clicked and for the sake

932.72 -> of this we can get rid of retime frame

934.24 -> as we're not focusing on it right now

936.399 -> click on the return speed line and it

938.079 -> will give you this little keyframe here

940.72 -> and basically you can do one of two

942.88 -> things here you can grab the keyframe

944.32 -> here and you can change where your in

946.639 -> and out points are and that could be

948.639 -> handy i'm going to go back to where i

950.24 -> had it with command z here because i

951.92 -> liked what i had but what i do want to

953.759 -> do is make this a curve so i'll make

956.16 -> sure i've got the keyframe selected and

957.92 -> you can see here it's on the straight

959.759 -> one if we go to the curved one here it's

961.6 -> going to give us these little handles

963.6 -> that we can adjust the curve with so

965.759 -> we'll adjust it to that and we'll do the

967.12 -> same on the other side here so now you

969.44 -> can see if we play it back it's a lot

970.959 -> more gradual in terms of how it curves

973.36 -> in and out of the speed ramp

976.399 -> all right so we'll drop that back up now

978.48 -> if we go right click retime curve get

980.16 -> rid of that you can see that stays 400

982.8 -> 100 400 and you'll notice our curve is

985.839 -> still there and curve on the way out

989.6 -> great

990.639 -> let's drop this down change speed and

993.199 -> for this one let's go a little bit crazy

994.72 -> we'll go down to 10

997.519 -> and you can see there that's made quite

999.12 -> a long clip we'll play it back again and

1001.36 -> obviously we're getting a lot of jitter

1003.279 -> so let's just quickly do exactly what we

1005.12 -> did before we click on this we go to

1008 -> retime process we change that to optical

1010.16 -> flow for motion estimation we go

1012.079 -> straight to speed warp now we're not

1014 -> going to be able to play this back

1015.04 -> without rendering so right click

1017.12 -> render in place prores and pick our

1020.079 -> destination and again it's going to take

1022.32 -> a little bit of time so hold tight and

1024.799 -> we'll see if it worked in just a moment

1028.45 -> [Music]

1030.88 -> all right that's finished now let's uh

1032.319 -> let's see how well it worked we'll play

1033.52 -> through from the start here remember we

1035.12 -> went from 400 we slowed it right down to

1037.6 -> 10 of its original speed and then speed

1040 -> ramped it back up to 400

1043.839 -> that is buttery smooth slow motion if i

1046.4 -> ever saw it and look

1048.48 -> yes there's some minor blemishes around

1050.4 -> her nose uh in the footage here

1052.24 -> especially when the light is just behind

1053.76 -> it but if you don't focus on that tiny

1055.84 -> bit everything else is absolutely

1058.4 -> perfect this looks like 300 frames per

1060.48 -> second or more and it was shot at 25

1063.12 -> frames per second shot on set at 25

1065.2 -> frames per second and all we've done

1066.559 -> here is clicked a couple of buttons and

1068.08 -> made it super slow motion and it's

1070.24 -> smooth it's really smooth great that

1072.16 -> clips looks fantastic let's see what it

1074 -> looks like compared to the original

1075.12 -> again we'll bring that over the top uh

1076.799 -> we'll drop this away so playing it back

1079.039 -> this is normal speed she walks in she

1080.88 -> grabs this out and walks away

1085.12 -> playing it back at slow motion look how

1087.52 -> slow that is it's slow motion

1090.08 -> uh look we're working in a fantastic era

1092.88 -> there are so many tools at hand here and

1095.12 -> uh and this is one where you should

1096.32 -> certainly push that button

1098.16 -> uh look i'm impressed but i did allude

1101.44 -> at the start that uh it doesn't work all

1103.44 -> the time so let's move on to that last

1105.12 -> piece of footage and spoiler alert it

1107.52 -> does not work and i'll show you why

1109.76 -> all right so we've got this guy who

1110.799 -> comes in he does his trick and then he

1112.88 -> uh he skates off so we'll quickly move

1114.799 -> through the process again we know it by

1116.32 -> now

1117.12 -> command r will find where we want to add

1119.12 -> the speed point just about here before

1120.72 -> he does his trick and then the other

1122.24 -> speed point as he rolls away we'll drop

1124.64 -> this down to let's say 25 percent of his

1127.52 -> original speed here

1129.679 -> playing it back obviously choppy chop

1131.52 -> chop chop let's move straight through

1133.52 -> optical flow uh speed warp and you saw a

1137.12 -> bit of the frame shift around there

1138.72 -> especially in the cracks between the

1139.919 -> tiles here in the concrete now um

1143.679 -> let's not spoil the surprise here let's

1145.2 -> not spoil the grand finale i'm just

1146.88 -> going to render in place and we'll see

1148.32 -> where we get to

1149.76 -> render in place okay

1151.679 -> okay

1154.88 -> all right we're back for the grand

1156.64 -> finale i'm not going to scrub through

1158.4 -> this let's just play from the start

1160.16 -> let's see uh how fun we can get

1167.679 -> starting to get a little bit weird it's

1169.6 -> kind of soupy and then

1172.559 -> it's uh look jelly is smooth right so

1176.32 -> technically it's smooth slow motion this

1178.72 -> really goes to show uh particularly in

1180.32 -> this section when you've got a lot of

1182.48 -> complex movement uh and then also these

1184.559 -> lines i'm sure are having something to

1186.4 -> do with it as well um when you've got a

1188.24 -> lot of complexity in your shot here the

1190.799 -> algorithm the neural engine uh the ai

1193.2 -> doesn't quite know what to do with it

1194.88 -> all and i guess when a little bit gets

1197.039 -> out of whack then it knocks everything

1198.4 -> out of whack

1199.76 -> and unfortunately

1201.28 -> it doesn't look like we'll be able to

1202.799 -> slow this skateboard trick down to super

1204.72 -> slow motion especially not buttery

1206.24 -> smooth we do get slow motion but it's uh

1209.12 -> it's it's more jelly than it is butter

1211.2 -> but that said uh i think we've shown

1213.12 -> some really great results here so we've

1214.72 -> got mixed results on the first one here

1216.72 -> where we've got kind of some weird

1218.72 -> warping happening on the guy's hand here

1220.559 -> but really good results on the two girls

1222.4 -> in the middle of the frame i would say

1223.919 -> that this part is acceptable uh if you

1226.08 -> use this a small part of this in part of

1228.64 -> a larger edit i don't think you would

1230 -> notice some of the weirdness this shot

1231.919 -> here fantastic buttery smooth slow

1234.48 -> motion from start to finish uh it looks

1236.4 -> like it was shot at a high frame rate

1238.159 -> this was only shot at 25 frames per

1240.24 -> second on set uh wild that's just wild

1242.88 -> to me that we live in an era with a

1244.159 -> couple of button clicks and you know 15

1245.84 -> minutes of render time we can slow it

1247.919 -> down to 10 of what it was originally

1250.24 -> shot at and then you've got this which

1252 -> is a bit of a disappointment because you

1253.76 -> know with extreme sports and anything

1255.44 -> with a lot of complex movement you want

1256.88 -> to slow it down and see every part of

1258.48 -> the frame but obviously here we're just

1260.559 -> uh we're kind of moving into a bit of a

1262.08 -> gobbled mess but

1263.52 -> that's just the experience that i've had

1265.28 -> if you've had better experience using

1266.88 -> optical flow and speed warp uh on

1269.679 -> footage like the skateboard trick or

1271.36 -> some other high intensity sports clips

1273.28 -> or anything like that let me know in the

1274.799 -> comments i'm always ready to learn uh

1276.48 -> how to use these tools better

1278.64 -> uh speaking of clips though i got these

1280.96 -> from envato elements uh now envato

1283.12 -> elements is a really easy to use

1284.559 -> subscription service uh that i

1286.24 -> definitely think you should go and check

1287.44 -> out uh if you haven't already now you

1290.32 -> can get unlimited absolutely unlimited

1293.52 -> footage you can get unlimited photos you

1295.44 -> can get unlimited music you can get

1297.36 -> unlimited uh templates for things like

1299.44 -> davinci resolve premiere pro after

1301.52 -> effects and many more look it's one

1303.919 -> subscription but you get so many great

1306.4 -> assets to use right away in your

1308.48 -> projects and the licensing is really

1310.4 -> really easy as well so for each asset

1312.24 -> that you get you get an individual

1313.44 -> license to make sure that you know you

1315.44 -> don't get any copyright strikes on

1316.88 -> youtube and all of that but yeah go and

1318.48 -> check it out i'll leave the link in the

1319.679 -> description below and uh and maybe grab

1321.84 -> some more footage on there and see if

1323.12 -> you can get a similar or even better

1324.72 -> results than i did using optical flow

1326.72 -> and speed warp in davinci resolve thanks

1328.64 -> for watching the video if you want to

1330.08 -> see any more tips and tricks or want us

1332.159 -> to dive a little bit deeper into some

1333.919 -> smaller more obscure settings in

1336.24 -> programs like davinci resolve or

1337.919 -> premiere after effects even photoshop

1340.159 -> things like that

1341.52 -> let us know in the comments and we'll

1342.799 -> jump into those things so that you don't

1344.08 -> have to have a great day and enjoy

1346.24 -> making things nice and slow

1348.97 -> [Applause]

1353.36 -> [Music]

1360.03 -> [Music]

1366.76 -> [Music]

1367.84 -> bye

Source: https://www.youtube.com/watch?v=6jRH0oCa7ps