how to rallenty video and generate "audio-slowmo" (effect) using avisynth?

[marcorocchini]

Hi but please keep in mind that I'm a cat

Using avisynth 64bit how can I smooth-rallenty a video clip setting the new framerate for example from 25 (initial original framerate) to 19? If possible I require a fast process preserving a good quality.

And if possible I would like to create the "audio-slowmotion" effect if possible

how can i DO? thanks

[jagabo]

AssumeFPS(19, sync_audio=true)

[marcorocchini]

thanks, but is there a way to improove quality? I use interlaced footage 50i, need I field interpolation?

[jagabo]

QTGMC()
AssumeFPS(19, sync_audio=true)

[marcorocchini]

I get this error:


[Attachment 48598 - Click to enlarge]

what can it be?

[jagabo]

The source filter is returning a color format that isn't supported by the version of QTGMC you are using. Try ConvertToYV12(interlaced=true) between the source filter and QTGMC.

[marcorocchini]

but this occours in a (little) loss of quality?

[marcorocchini]

Import("v:\automazioneclip\avisynth\plugins\IResize.avsi")
Import("V:\automazioneclip\AviSynth\AnimeIVTC.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC.avsi")
Import("V:\automazioneclip\AviSynth\plugins\smoothFPS2.avsi")
Import("v:\automazioneclip\AviSynth\plugins\FrostyBorders.avsi")
Import("v:\automazioneclip\AviSynth\plugins\CropResizedic2017.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\Lsmash64perVirtualDub64\LSMASHSource.dll")
LoadPlugin("V:\automazioneclip\AviSynth\plugins64\ffms2.dll")
LoadCPlugin("v:\automazioneclip\avisynth\plugins64\yadif.dll")  
LWLibavVideoSource("C:\Users\Administrator\Desktop\c65\C0065.MXF")
ConvertToYV12(interlaced=true)      
QTGMC()
AssumeFPS(19, sync_audio=true)

I have try the ConvertToYV12(interlaced=true) but I get:


[Attachment 48599 - Click to enlarge]

however if possible I would keep the avisynth 64bit enviroment

[marcorocchini]

Import("v:\automazioneclip\avisynth\plugins\IResize.avsi")
Import("V:\automazioneclip\AviSynth\AnimeIVTC.avsi")
Import("V:\automazioneclip\AviSynth\QTGMC.avsi")
Import("V:\automazioneclip\AviSynth\plugins\smoothFPS2.avsi")
Import("v:\automazioneclip\AviSynth\plugins\FrostyBorders.avsi")
Import("v:\automazioneclip\AviSynth\plugins\CropResizedic2017.avsi")
LoadPlugin("v:\automazioneclip\AviSynth\Lsmash64perVirtualDub64\LSMASHSource.dll")
LoadPlugin("V:\automazioneclip\AviSynth\plugins64\ffms2.dll")
LoadCPlugin("v:\automazioneclip\avisynth\plugins64\yadif.dll")  
LWLibavVideoSource("C:\Users\Administrator\Desktop\c65\C0065.MXF")
QTGMC()
AssumeFPS(19, sync_audio=true)

OR

if I try to use the attached - different - version of QTGMC.avsi

I get another type of error


[Attachment 48601 - Click to enlarge]

[jagabo]

same

[marcorocchini]

QTGMC does not accept YUY2 as source? Is QTGMC compatible with my avisynth+ R1576?

[marcorocchini]

c
[Attachment 48607 - Click to enlarge]

what can it be?

[jagabo]

It's telling you what the problem is.

[poisondeathray]

Newer versions accept YUY2, YV16

You probably need to upgrade script and plugins , dependencies

See the links
http://avisynth.nl/index.php/QTGMC

[jagabo]

You can either convert to YV12 or spend a lot of time tracking down which support filter is missing or the wrong version.

[jagabo]

I get this error:


[Attachment 48598 - Click to enlarge]

what can it be?

https://forum.doom9.org/showthread.php?p=1802566#post1802566

[marcorocchini]

[Attachment 48609 - Click to enlarge]

Oh wow *** now it works, thanks

but only I need to take to virtualdub the video jet ready at 25fps interlaced (of course change only the duration). Original .mxf framerate is 25 interlace. How have I to modify the .avs script so that the output of avisynth become in slowmotion of 19 fps and have a new duration?

And how I have to modify the script if I use a progressive source instead of interlaced?

[marcorocchini]

QTGMC should be used only for interlaced footage?

[marcorocchini]

example of my .mxf 50i :

https://www.dropbox.com/s/79t6xqarwo2ygz2/C0050.MXF?dl=0

[jagabo]

example of my .mxf 50i :

https://www.dropbox.com/s/79t6xqarwo2ygz2/C0050.MXF?dl=0

25i deinterlaced to 50p, slowed to 19p, duration changed from 18 seconds to 46 seconds:

LWLibavVideoSource("C0050.MXF") 
ConvertToYV12(interlaced=true)
QTGMC()
AssumeFPS(19)

You can leave out the QTGMC for progressive sources. The running time will change from 18 seconds to about 24 seconds.

[marcorocchini]

but QTGMC is doubling framerate as the yadif 1,1 ?

[jagabo]

If you don't want double frame rate use FPSDivisor=2.

[marcorocchini]

ok c*t but I think have 3 problems:

1) If i open the .avs in virtualdub and encode it I get a 19fps video file: I need to slowmotion the source but the final output have to be the same fps of original, with a duration that correspond a 19fps. I need to expose to virtualdub or the encoder an .avs 50i (that slow the source from 25 (50i) to 19fps or x fps)

2) using this script I see some jerky frames

3) encoding at 4 fps is a little slow, is there a different way to speed-up the process preserving good quality?

thank you

[poisondeathray]

ok c*t but I think have 3 problems:

1) If i open the .avs in virtualdub and encode it I get a 19fps video file: I need to slowmotion the source but the final output have to be the same fps of original, with a duration that correspond a 19fps. I need to expose to virtualdub or the encoder an .avs 50i (that slow the source from 25 (50i) to 19fps or x fps)

2) using this script I see some jerky frames

3) encoding at 4 fps is a little slow, is there a different way to speed-up the process preserving good quality?

thank you

You would need to generate extra frames . Either blends, duplicate or interpolation. Pros / cons to each. You decide. Interpolation can be the smoothest, but you might have bad edge artifacts in some scenes

You can speed it up if you have enough cores with larger prefetch value (more multithreading) , or faster QTGMC Settings , or Something other than interpolation (e.g. blends, duplicates) because interpolation is slower . 4:2:0 will encode faster than 4:2:2 too. Timestrech audio is slower algorithm, but audio quality higher.

1080p50, or 720p50 , or 1080i25 to reinterlace . If you *need* 25fps, then you need to reinterlace to keep the smoothness. 50p would be preferrable IMO for most situations

I left it this example at 1080p50, 4:2:2, but the audio was converted to 16bit MP3 for the demo (you can leave it PCM 24bit, if you use transport stream)

- Timestretch for audio . Rate = 76 because 19/25 = 76%
- MFlowFPS num/den is 65789/1000 because FPS is 50.0 after bobbing . (25/19)*50

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("FFVideoSource", 3)

Aud1=FFAudioSource(C0050.MXF", track=1)
Aud2=FFAudioSource("C0050.MXF", track=2)
MergeChannels(Aud1,Aud2)
ConvertAudioToFloat()
TimeStretch(rate=76)
ConvertAudioTo16Bit()
st=last

FFVideoSource("C0050.MXF")
AssumeTFF()
QTGMC(Preset="faster")
q=last

super = q.MSuper(pel=2)
backward_vec = MAnalyse(super, overlap=4, isb = true, search=3)
forward_vec = MAnalyse(super, overlap=4, isb = false, search=3)
q.MFlowFps(super, backward_vec, forward_vec, blend=false, num=65789, den=1000)
AssumeFPS(50)
q2=last


AudioDub(q2,st)
Prefetch(4)

[jagabo]

1) If i open the .avs in virtualdub and encode it I get a 19fps video file: I need to slowmotion the source but the final output have to be the same fps of original

I suspected that but you didn't specify it in your original post so I didn't supply that option. I figured if you couldn't be bother to clearly specify what you wanted I wouldn't give you a list of all possible options. Use a motion interpolating frame rate changer -- like you've been told several times before. Try Interframe().

2) using this script I see some jerky frames

19 fps is jerky/flickery.

3) encoding at 4 fps is a little slow, is there a different way to speed-up the process preserving good quality?

Use a faster preset in QTGMC or use a faster deinterlacer.

[marcorocchini]

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("FFVideoSource", 3)

Aud1=FFAudioSource(C0050.MXF", track=1)
Aud2=FFAudioSource("C0050.MXF", track=2)
MergeChannels(Aud1,Aud2)
ConvertAudioToFloat()
TimeStretch(rate=76)
ConvertAudioTo16Bit()
st=last

FFVideoSource("C0050.MXF")
AssumeTFF()
QTGMC(Preset="faster")
q=last

super = q.MSuper(pel=2)
backward_vec = MAnalyse(super, overlap=4, isb = true, search=3)
forward_vec = MAnalyse(super, overlap=4, isb = false, search=3)
q.MFlowFps(super, backward_vec, forward_vec, blend=false, num=65789, den=1000)
AssumeFPS(50)
q2=last


AudioDub(q2,st)
Prefetch(4)

oh my ***

it's too complicated for a furry *** but results seem absolutly fine


[Attachment 48621 - Click to enlarge]

what does mean

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("FFVideoSource", 3)

?

it's processors based?

I need to do a batch

[poisondeathray]

what does mean

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("FFVideoSource", 3)

?

it's processors based?

I need to do a batch

multithreading for avs+ ; certain filters / processes require different modes


http://avisynth.nl/index.php/AviSynth%2B#Setting_MT_modes

[marcorocchini]

ah ok but if I use LWLibavVideoSource or LSMASHVideoSource I need to use:

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("LWLibavVideoSource", 3)

or

SetFilterMTMode("DEFAULT_MT_MODE", 2)
SetFilterMTMode("LSMASHVideoSource", 3)

?

[jagabo]

You can see filtermodes here: https://publishwith.me/ep/pad/view/ro.rDkwcdWn4k9/latest

You can download that and make an AVSI file in AviSynth+'s plugins folder so it autoloads.

[marcorocchini]

ok but I need to load a specific .avsi?

Can I use the script of poison with avisynth+ 0.1 R1576?