Video slider facility for examining individual frames ?

[Arcadiune]

Hi

Does anyone know of a video editing programme that has a slider option across the bottom of the screen that allows you to slow down and speed up frames for individual examination ?

It's to analyse golf swings to see where possible faults lie, either in the whole swing itself or incorrect body positions before, during and after the swing....

Thanks

[redwudz]

You might try VirtualDub FilterMod. It has a slider and you can use the keyboard arrow keys or the mouse wheel to advance to the next frame.
How well that works may depend on the video codec. Some highly compacted codecs like H.264 may not work as well for viewing individual frames.
But it's freeware, so give it a try.

Edit: You can also change the framerate for slow motion playback.

[Arcadiune]

Thank you I'm using Win 10 64 bit. In fact I've tried it on several occasions over the past week or so using MP4, gif, avi, jpg etc. and got the video working but there was no picture. I also tried a home video of surfing but still nothing so was looking around hoping to find something else....

I guess I must be doing something wrong somewhere ?

[shekh]

Video working but no picture, wtf? Can you show a screenshot?
Try this: tools->create test video->rgb color cube
If no picture, go options->preferences->display, try changing options there until you have something.

[Arcadiune]

Thanks, this is as far as I get....

[shekh]

What if you open some jpg?

[Arcadiune]

Same result as before unfortunately.

This slow motion golf swing link is what I'm trying create on VDub but using the slider to move backwards and forwards, so is it possible as I just can't seem to do it....

https://www.youtube.com/watch?v=08rpqW2Z9Vw

Thanks

[shekh]

If you try to open jpeg image and you get the same message "bla bla avc1" it means something is way too wrong.
Sorry I do not understand what you do.

[jagabo]

x264vfw

But you need to shoot high frame rates (240 fps or more) to get smooth slow motion like that youtube video. If you shoot 30p and simply slow it down you'll get video that looks more like this:

[LigH.de]

You cannot get the "same" result. JPEG is not an AVI with 'avc1' video. The error message must be different.

Furthermore, using the ffmpeg input driver, VDFilterMod should be able to open an MP4 clip containing AVC video without repacking it into AVI, so there is really no need for VfW codecs in this case.

Please try to explain with a lot more details, step by step, what you are trying to do. Maybe I already misunderstand what your original material is, at all. An analysis with MediaInfo may explain more.

[Arcadiune]

Problem is I'm no expert whatsoever never have been, so apologies it would be pointless to even try to explain. The reason why I showed the slow motion video in the first place was because that was I wanted to achieve as an end result with VDub.

Starting afresh is it even possible to do it using a normal speed YouTube video in the first place ? If it is then I'd be really very grateful if someone could kindly create it on VDub and how to do it. If it isn't then a pity so as I originally said I was looking around hoping to find something else instead of VDub.

[LigH.de]

Do you only want to watch a video in slow-motion? That's just a matter of the features the player offers.

Or do you really want to create a video with a slow-motion scene? That's a whole different task...

[Arcadiune]

Thanks yes to create a video with a slow-motion scene if that's possible ?

[jagabo]

is it even possible to do it using a normal speed YouTube video in the first place ?

Generally, no. There are some filters that try to interpolate motion between existing frames but they only work well with simple motions. Complex motions like a golf swing will result in a mess, nothing you could really analyze.

[LigH.de]

Creating a video with slow-motion scenes is possible ... yes. But with more or less serious efforts. You will either need to buy a video editor with advanced timeline features (which I don't have, so I can't recommend any), or learn to use freeware tools which are just as powerful, but much less user friendly (e.g. I could program AviSynth scripts using motion compensating interpolation functions like MFlowFPS, but I doubt someone with zero experience could learn to do that in less than a week...).

And of course, jagabo is right, there are complex motions where an interpolation will probably fail, you can't trust the results. Real slow-motion only works with a high-speed recording. Nevertheless, before giving up, it may be worth a try ... at least for the experience, may it be positive or negative.

[Arcadiune]

All sounds way, way over my head so afraid I'll have to leave it, pity but many thanks indeed for trying !

[jagabo]

Here's an example of the original high speed video, and a video with motion interpolated from every 8th frame of that video (simulating what you might get from a normal speed camera and motion interpolation).

[Arcadiune]

Interesting, would it be possible to manually use a VDub slider for example on this particular clip allowing fast forward and backward pics, as well as even slower and to stop it anywhere so as to give time to explain what's happening ?

[jagabo]

Interesting, would it be possible to manually use a VDub slider for example on this particular clip allowing fast forward and backward pics, as well as even slower and to stop it anywhere so as to give time to explain what's happening ?

You probably could have downloaded VirtualDub FilterMod and found out for yourself in less time than it took you to write that question.

Note that I created the video using AviSynth and x264 or QSVEncC. I did use VirtualDub to view the script first, though.

[raffriff42]

What you're talking about is called "timeline scrubbing." Different editors support it to varying degrees.
VirtualDub lets you drag the timeline cursor around, but not with audio.
Vegas Movie Studio is pretty good. You can scrub forward or backward at a steady 33% or whatever.


[Attachment 42436 - Click to enlarge]

[Arcadiune]

[QUOTE=jagabo;2492372]

Interesting, would it be possible to manually use a VDub slider for example on this particular clip allowing fast forward and backward pics, as well as even slower and to stop it anywhere so as to give time to explain what's happening ?

You probably could have downloaded VirtualDub FilterMod and found out for yourself in less time than it took you to write that question..

That's precisely what I b'well did and look what happened ! And still no nearer either I'm looking elsewhere....

[jagabo]

I don't know why VirtualDub FilterMod isn't working properly on your computer. I've run it (both the 32 bit and 64 bit versions) on several Win10 systems with no problems. Did you extract everything in the portable archive? Including the plugins32 and plugins64 folders? Those two folder are critical because they contain the source filters, codecs, etc.

[theewizard]

videolan player aka VLC
its free, and you can customize the interface and a single frame advance button is available ( no SF backup/reverse though )
you can also alter the speed of play in the video settings
its not an editor, its a player

AVIdeMUX will also let you advance and reverse the frames
you can cut and save just the swing and change the frame rate so it plays faster or slower
and its FREE

[Arcadiune]

Thanks for your help everyone, not being an expert took a hell of a lot of finding but finally got there....

https://forum.videohelp.com/threads/370539-VirtualDub-AIO-All-in-one-installer-for-tho...-have-problems

[LigH.de]

Ehm, no. That is not what we mean. Instead:

https://vdfiltermod.sourceforge.io/
https://sourceforge.net/projects/vdfiltermod/files/

"VirtualDub FilterMod" is not "VirtualDub"; by far not anymore.

[Arcadiune]

Thanks but mine's working ok now....

[jagabo]

For your purposes it doesn't matter if you use the original VirtualDub and the appropriate source filters and codecs (included in the AIO install) or VirtualDub FilterMod.

[Arcadiune]

Thanks the only remaining problem is that I've got two panes instead of one, even though I've ticked just the output pane and not the input pane....

[jagabo]

VirtualDub always shows both panes. You can just make the main window smaller to hide the second pane.

[raffriff42]

VirtualDub always shows both panes.

True for older versions, including VirtualdubMod, but not true for Virtualdub 1.10.x and VirtualDub FilterMod.
Go to View menu, Pane layout -> Output pane only.