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TOPIC: Custom and User Effects

Custom and User Effects 1 year, 6 months ago #190043

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EffectAuthorDownloadCategoryCreatedThis version
RGB registrationjwrlRGBregistration.fxDVEMay 18 2020May 18 2020

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This is a simple effect to allow removal or addition of the sorts of colour registration errors that you can get with the poor debayering of cheap single chip cameras. It can also be used if you want to emulate some of the colour registration problems that older analogue cameras and TVs produced.
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Last Edit: 16 hours, 4 minutes ago by jwrl.
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Custom and User Effects 1 year, 6 months ago #190044

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EffectAuthorDownloadCategoryCreatedThis version
Simple S curvejwrlSimpleS.fxColourApril 29 2020May 1 2020

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One of a group of three simple effects, this effect allows the user to apply an S-curve correction to red, green and blue video components and to the luminance. You can achieve some very dramatic visual results with it that are hard to get with standard gamma and exposure adjustments in other colour grade effects.

The other two effects in the group are the Vibrance effect and the White and black balance effect. They were originally designed to be used in combination, but of course can be used independently of each other.
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Last Edit: 16 hours, 2 minutes ago by jwrl.
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Custom and User Effects 1 year, 6 months ago #190045

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EffectAuthorDownloadCategoryCreatedThis version
Simple starjwrlSimpleStar.fxStylizeApril 11 2020April 12 2020

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Simple star is a glint effect which creates star filter-like highlights, with 4, 5, 6, 7 or 8 arms selectable. The stars that it creates can be scaled, spun and positioned anywhere you wish. They are not dependant on having an existing highlight in the image to trigger them. They can also be coloured with a user-selectable flat colour or can be mixed with a prismatic spectrum for more dramatic effect.

The four, six and eight pointed stars match those possible with optical star filters and approximate the look produced by those filters reasonably closely. The five and seven pointed stars are absolutely impossible to produce with any real world filter, and have just been included for fun.
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Last Edit: 15 hours, 59 minutes ago by jwrl.
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Custom and User Effects 1 year, 6 months ago #190842

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EffectAuthorDownloadCategoryCreatedThis version
Smooth rolljwrlSmoothRoll.fxKeyJanuary 5 2020January 6 2020

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This effect provides a simple means of smoothing the movement of a credit roll or crawl. It does this by applying a small amount of directional blur to the title. Simply add this effect after your roll or crawl. No action from the user is required apart from adjusting the smoothing to give the best looking result. Oh, and setting whether you want to smooth a roll or a crawl.
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Last Edit: 15 hours, 57 minutes ago by jwrl.
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Simple tools 6 months, 1 week ago #210497

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EffectAuthorDownloadCategoryCreatedThis version
Title blend fixjwrlTitleFix.fxKeyJanuary 4 2020July 2 2020

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This effect enhances the blending of a title, roll or crawl when used with external blending or DVE effects. Because it has been developed empirically with no knowledge of how Editshare blends titles internally, it only claims to be subjectively close to the Lightworks effect.

The three titles in the screen grab above show you:

  • Standard title effect: what you can expect to see when using the title effect as it has been designed to function. Note that the drop shadow is strong and clearly visible.
  • Blended title effect: this is what happens if you need to control the title with a DVE or blend. To be able to do this you absolutely must disconnect the input to the title effect in the routing panel. This changes the way that the title behaves. Note that the drop shadow has now almost vanished. There is also a subjective effect of the edges softening.
  • Title blend fix effect: this is exactly the same setup as with the blended title effect, but the title blend fix has been added between the output of the title and the input of the DVE or blend. Note that the drop shadow is again strong and clearly visible and looks almost identical to the standard title effect, and the edges are again clean.

It also includes the ability to smooth and antialias text produced by a Lightworks text effect. This can be particularly useful when moving or zooming on a title. I suggest a start point setting of 10%. That's completely subjective, and will almost certainly vary depending on text size and style. The screen grab below shows the improvement in smoothing that you can expect to see. If you don't need that ability at all, leave it set it to zero and the antialiasing will be completely bypassed, reducing the GPU load.

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Finally, here's an example of the routing that you would use to combine a title with a DVE effect when using title blend fix to clean up the blend. To do this first apply the title, then this effect, then the DVE. Open your routing and connect the video layer directly to the Bg input on the DVE, then disconnect the video from the input to the title.

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Last Edit: 15 hours, 55 minutes ago by jwrl.
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Re: Simple tools 6 months, 1 week ago #210498

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EffectAuthorDownloadCategoryCreatedThis version
VibrancejwrlVibrance.fxColourJanuary 4 2020January 4 2020

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This simple effect just adjusts the colour vibrance. It does this by selectively altering the saturation levels of the mid tones in the video. You can probably think of it as a sort of gamma adjustment that only works on saturation.
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Last Edit: 15 hours, 54 minutes ago by jwrl.
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Re: Simple tools 6 months, 1 week ago #210499

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EffectAuthorDownloadCategoryCreatedThis version
White and black balancejwrlWhiteBalance.fxColourApril 23 2020April 23 2020

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This is a simple black and white colour balance utility. If your whites aren't really white or your blacks aren't really black this could really help. To use it, first sample the point that you want to use as a white reference with the white eyedropper, then get the black reference point using the black eyedropper. Switch off "Select white and black reference points" and set up the white and black levels to give the effect that you need.

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The screen grab above shows the before (left) and after (right) level changes when the effect is applied. As you can see, apart from adjusting blacks and whites it has also partially corrected a red bias in the original shot due to the late afternoon light. To truly nail that sort of problem though, you will probably need to adjust the colour gamma as well.
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Last Edit: 15 hours, 52 minutes ago by jwrl.
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Re: Simple tools 6 months, 1 week ago #210500

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EffectAuthorDownloadCategoryCreatedThis version
Visual cropgr00byVisualCrop.fxDVENovember 26 2016January 8 2020

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This is a quick simple cropping tool that you can set up by dragging corner pins around on the screen. In effects settings mode, move your mouse over your edit viewer and two diagonally opposing corner pins will appear. Just click and drag and the crop will follow. Done. It's one of those "why did no-one think of this sooner" tools.
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Last Edit: 15 hours, 50 minutes ago by jwrl.
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Re: Simple tools 6 months, 1 week ago #210501

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EffectAuthorDownloadCategoryCreatedThis version
Visual motion blurjwrlVisualMotionBlur.fxStylizeJuly 9 2020July 10 2020

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This is a directional blur that can be used to simulate fast motion, whip pans and the like. This differs from other blur effects in that it is set up by visually dragging a central pin point in the record viewer to adjust the angle and strength of the blur. I have added the centre point cross to the screen grab for clarity. It isn't displayed in the effect.
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Last Edit: 15 hours, 48 minutes ago by jwrl.
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Re: Simple tools 1 month, 3 weeks ago #218353

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Because one of the problems that crops up with monotonous regularity concerns the Lightworks 2D DVE effect and its handling of alpha (transparency) channels I have decided to post my own version. It's a version of the effect that I have been using myself in one form or another over the last several years. I have called it 2D DVE plus alpha and it is designed to provide several bug fixes for the LW 2D DVE effect.

  1. A half texel offset bug which resulted in a transparent one pixel wide boundary between the Fg image and the DVE-generated drop shadow under the right conditions has been fixed.
  2. The fact that the drop shadow is calculated from the Fg frame boundaries in the LW DVE regardless of whether they are visible or not has been fixed.
  3. The drop shadow no longer punches a transparent hole in the composite output when the DVE is used with downstream blends and other DVE effects.
  4. Fg, Bg and Fg drop shadow transparency information is now passed on to the output.
  5. Drop shadows will scale as the foreground is scaled, so that if you use the DVE to do a zoom the drop shadow now zooms too.
  6. Drop shadow setup tracks the aspect ratio of the project, so that a 10% shadow X offset and a 10% shadow Y offset now display the same amount of on-screen displacement.

However despite these fixes, the user interface is identical in my effect to the Editshare version. You don't have to learn a new effect to use mine. There are just two obvious behavioural differences. The first is in the way that the drop shadow behaves as described in fixes 5 and 6. Fixes 3 and 4 have the side effect that any transparent areas of the background will be blanked out when this effect is applied. In practice this is rarely likely to be a problem.

You can download this effect from 2D DVE plus alpha.

To demonstrate the problems with the LW 2D DVE I have performed a series of tests with that effect and duplicated the tests with the 2D DVE plus alpha effect. In each case the Fg (foreground) input was scaled to 25% of its original size, so that we can see the edge of frame. Each also had a drop shadow applied by the DVE at 25% transparency, and all were created in the same 1920x1080 project. The same four 1920x1080 graphics were used with both effects, consisting of two text graphics, a foreground and a background plate. One of the text graphics, "Tropical skies" also had its own drop shadow built in. The routing for the first two sets of tests was as shown below, with either the LW 2D DVE or 2D DVE plus alpha used as required.

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The screen grabs below are sections of the full image and show comparisons between the LW DVE and my version.

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Test 1 shows the first problem. There is a one pixel wide completely transparent gap between the drop shadow and the Fg eureka graphic in the Lightworks DVE example. This isn't constant but varies with scaling and position, and thus can appear to flicker. In 2D DVE plus alpha that gap isn't visible, and never appears regardless of the scaling and position of the image or the size of the drop shadow.

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In test 2 the Editshare version applies the drop shadow to the invisible edge of the transparent text Fg frame and not just to the opaque sections of Fg. The black bar that you see to the right of the text is where the drop shadow appears. In 2D DVE plus alpha the drop shadow is applied only to the non-transparent sections of the image. Not shown here is what happens if the Fg has semi-transparent sections. In my version that is handled as you would expect, i.e., the drop shadow at those points is also semi-transparent.

The next configuration added a blend effect to the mix. The routing was connected like this. It's a reasonably standard configuration.

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Variations of that configuration gave the following two sets of results.

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Test 3 combined the opaque eureka graphic in the Fg over transparent Bg text. That composite was then fed into the fg input of a blend effect where it was overlaid over another background. Note that the transparent one pixel line is again present. More importantly, note also that the drop shadow is now all but invisible, except where it punches a hole in the DVE Bg. The image on the right shows what I would argue is the more expected behaviour and is in fact what 2D DVE with alpha produces.

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Finally, test 4 applied transparent text to transparent text in the DVE then fed the result into the fg input of the blend effect. The DVE Bg has had it's transparency completely ignored where the Fg image overlays it, which is worse than useless in this context. The drop shadow behaves as it did in test 3. The new effect again shows the more expected behaviour.

In summary, the side-by-side comparisons clearly show the Lightworks DVE problems and the way that 2D DVE plus alpha addresses them.
Last Edit: 16 hours, 6 minutes ago by jwrl.
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Re: Simple tools 1 month, 3 weeks ago #218380

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Further information: in my post above I mentioned but didn't show that I had tested with a graphic with drop shadow. The grab below shows the effect in the Lightworks DVE, with the left side of the frame at 50% opacity and the right at 100%. Note that as the opacity reduces the unmasked areas of the graphic become visible.

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When 2D DVE plus alpha is used you get this, again with the left side set to 50% opacity. The soft drop shadow in the graphic now carries through to the DVE's drop shadow. More importantly, the opacity reduction no longer causes the unmasked image to appear.

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This behaviour means that with the latter effect you can use the opacity parameter to fade a transparent image in and/or out, with the former you very definitely cannot.
Last Edit: 16 hours, 14 minutes ago by jwrl.
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Re: Custom and User Effects 15 hours, 17 minutes ago #221777

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In an attempt to control the size of this thread it is now locked. If you find a broken link or an effect that doesn't compile or run correctly please post as much information as you can about the problem in the Custom and User Effects feedback thread. It will be attended to.

The fact that this thread is locked does NOT mean that it is no longer active. There will doubtless be additional effects added and possibly even others removed. It's just the feedback that has been separated out. In fact even if you just want to talk to us, use the Custom and User Effects feedback. We'd appreciate hearing from you.
Last Edit: 15 hours, 14 minutes ago by jwrl.
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