No luck with V17 Slow Motion ?

ritsmer wrote on 6/16/2020, 7:57 AM

I have tried to use the new V17 built-in Slow Motion feature - but the result is not good.

Input is some 1920x1080 25 Fps 50 Mbps with shutter speed 1/250 - and it is slowed down to 0.20 using the new V17 FX with analyze= FINE:

https://drive.google.com/file/d/133h1bet6XAD4nGK0xOVedKEYtU7AQ3D9/view?usp=sharing

Look i.e. at the mans head jerking forward and backward.

Is this result what it to be expected from the new Slo Mo?

Comments

fifonik wrote on 6/16/2020, 4:08 PM

I've just recently played with SlowMo and also found that the VP17 Optical Flow is not good enough for me (also user FINE & 0.2). Optical Flow also gave me messy "aura" around moving object, but I have not seen some jerky movements in my tests. It is better that simple changing speed with Ctrl + edge drag. I ended up with slowing my fragment using AviSynth (twixtor is a bit expensive for my rare usage).

Last changed by fifonik on 6/17/2020, 4:36 AM, changed a total of 4 times.

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wwaag wrote on 6/16/2020, 4:35 PM

@ritsmer

How about uploading a sample clip of the original?

walter-i. wrote on 6/16/2020, 4:46 PM

I prefer to use the envelope speed.
A big advantage of this is that you can adjust sliding speed changes.
Very helpful when repairing too fast or uneven pans, or when adjusting the length of events to the beat of the music or the speaking tone.
If you don't go below 20% of the speed, the quality - for my purposes - is very usable.

@ritsmer

https://drive.google.com/file/d/133h1bet6XAD4nGK0xOVedKEYtU7AQ3D9/view?usp=sharing

Look i.e. at the mans head jerking forward and backward.

I've never had such stutters with envelope speed.

Last changed by walter-i. on 6/16/2020, 4:48 PM, changed a total of 1 times.

Camcorder: Pana HDC SD909, Sony FDR-AX53
Hardware: CPU i9-9900KS 4GHz, 32 GB Ram, GTX 1660 SUPER, ASUS TUF Z390-PLUS Gaming, SSD 970 EVO Plus 500GB M.2, SSD 860 EVO Series 1TB, Toshiba 3TB SATA, WIN 10 Pro
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lenard-p wrote on 6/16/2020, 9:53 PM

 

https://drive.google.com/file/d/133h1bet6XAD4nGK0xOVedKEYtU7AQ3D9/view?usp=sharing

Look i.e. at the mans head jerking forward and backward.

I've never had such stutters with envelope speed.

Please share @walter-i. I see problems too

walter-i. wrote on 6/17/2020, 2:16 AM

Please share @walter-i. I see problems too

@lenard-p
What do you mean by "please share"?
What should i share?

Camcorder: Pana HDC SD909, Sony FDR-AX53
Hardware: CPU i9-9900KS 4GHz, 32 GB Ram, GTX 1660 SUPER, ASUS TUF Z390-PLUS Gaming, SSD 970 EVO Plus 500GB M.2, SSD 860 EVO Series 1TB, Toshiba 3TB SATA, WIN 10 Pro
NLE: Vegas Pro11-15+17, Heroglyph4, RespeedR

lenard-p wrote on 6/17/2020, 2:45 AM

your 20% speed slow motion examples that you had high quality results with. My 20% slow not acceptable

walter-i. wrote on 6/17/2020, 4:03 AM

@lenard-p

I would ask - if you quote me, then please, at least correctly:

If you don't go below 20% of the speed, the quality - for my purposes - is very usable.

@ritsmer

https://drive.google.com/file/d/133h1bet6XAD4nGK0xOVedKEYtU7AQ3D9/view?usp=sharing

Look i.e. at the mans head jerking forward and backward.

I've never had such stutters with envelope speed.

I never spoke of high quality as you put in the room

your 20% speed slow motion examples that you had high quality results with.

 

Camcorder: Pana HDC SD909, Sony FDR-AX53
Hardware: CPU i9-9900KS 4GHz, 32 GB Ram, GTX 1660 SUPER, ASUS TUF Z390-PLUS Gaming, SSD 970 EVO Plus 500GB M.2, SSD 860 EVO Series 1TB, Toshiba 3TB SATA, WIN 10 Pro
NLE: Vegas Pro11-15+17, Heroglyph4, RespeedR

lenard-p wrote on 6/17/2020, 4:11 AM

If you don't go below 20% of the speed, the quality - for my purposes - is very usable.

Please share your usable results @walter-i. For me if you can tell it's optical flow slowmotion then I've failed, what about you walter?