Как сделать трекинг в премьере

18.09.202218.09.2022 admin 0 Comments

Masking and tracking

Use Premiere Pro’s masking tools to apply effects to a specific part of a frame in your video. Learn to apply a mask, and then track it as it moves across the frame.

Masks let you define a specific area in a clip that you want to blur, cover, highlight, apply effects, or color-correct. You can create and modify different shaped masks, like an Ellipse or a Rectangle. Or, you can draw free-form Bezier shapes using the Pen tool.

You can use the Ellipse shape tool to create a circular or ellipse-shaped mask, or a Rectangle shape tool to create a four-sided polygon.

In the Timeline panel, select the clip you want to mask.

From the Effects panel, select the effect that you want to apply to the clip.

Apply the selected effect to a clip by dragging the effect from the Effects panel to the clip in the Timeline panel. Alternatively, select the clip and double-click an effect in the Effects panel to apply it.

For more information on applying an effect, see Apply effects to clips.

Open the Effect Controls panel to see the effect properties. Click the drop-down arrow to reveal the controls.

You can create an ellipse or rectangle. Use the Pen tool to create free form shapes.

You can specify values to adjust a mask using the Effect Controls panel. The controls change depending on your choice. For more information, see Adjust mask settings.

Click the Ellipse shape tool to create an Ellipse-shaped mask or click the Rectangle shape tool to create a rectangle-shaped mask.

The shape mask appears in the clip displayed in the Program Monitor, and the effect is constrained within the masked area.

You can now customize the size and shape of the mask using the Effect Controls panel. For more information on editing your mask, see Adjust mask settings.

You can apply the same effect multiple times by using different settings each time.

Create free-form shapes

You can create free-form shapes using the Pen tool. The Pen Tool lets you freely draw complex mask shapes around objects.

Select the Pen tool from the Effect Controls panel. Draw directly on the clip in the Program Monitor.

You can create different shapes by drawing straight lines and curved segments. To draw smooth curves, you can draw Bezier path segments that provide you greater control over the shape of the mask.

Draw straight path segments with the Pen tool

The simplest path that you can draw with the Pen tool is a straight line with two vertex points. By continuing to click, you create a path made of straight-line segments connected by vertex points. This is a linear mask.

A linear mask is always a polygon with joined by hard angles. Linear control points are also known as corner points.

Select the Pen tool.

Position the Pen tool where you want the straight segment to begin, and click to define the first vertex point (do not drag).

The first segment you draw is not visible until you click a second vertex point.

Click again where you want the segment to end.

Continue clicking to set vertex points for additional straight segments.

To close the path with a linear mask, Alt +click (Windows) or Option +click (macOS) over the first vertex point.

Draw curved Bezier path segments with the Pen tool

You create a curved path segment by dragging direction lines using the Pen tool. The length and direction of the direction lines determine the shape of the curve.

Bezier handles provide two-directional controls that allow you to change the curve of the line segment between the handle and the next point on either side.

A. Two-directional Bezier handles to control the shape of the curve B. Bezier mask points

Place the Pen tool where you want the curve to begin, and hold the mouse button down. A vertex appears, and the Pen tool pointer changes to an arrowhead.

Drag to modify the length and direction of both direction lines for a vertex, and then release the mouse button.

A. Placing the Pen tool
B. Starting to drag (mouse button pressed)
C. Dragging to extend direction lines

Place the Pen tool where you want the curved segment to end, and do one of the following:

A. Starting to drag
B. Dragging away from previous direction line, creating a C curve
C. Result after releasing mouse button

A. Starting to drag
B. Dragging in same direction as previous direction line, creating an S curve
C. Result after releasing mouse button

Continue dragging the Pen tool from different locations to create a series of smooth curves.

Create angles with the Pen tool

You can create perfect angles using the Pen tool. To create a perfect angle, do one of the following:

Modifying and moving masks

The vertex points on a mask let you easily manage the shape, size, and rotation of a mask.

Modify the shape, size, and rotation of a mask

To change the shape of a mask, drag a mask handle.

To change the shape of an ellipse mask to a polygon, press Alt and click any of the vertices of the ellipse.

Move, add, or remove a vertex

Other important commands and keyboard shortcuts

Adjust mask settings

You can specify values to adjust a mask using the Effect Controls panel. You can feather the mask, expand the mask, change the opacity, or invert the mask to stylise your video.

Apply mask feathering

To feather a mask, specify a Mask Feather value. The feathering guide appears around the mask as a dashed line. Drag the handle away from the feathering guide to increase the feathering, or toward the feathering guide to decrease the feathering.

The mask feather handle lets you control the amount of feathering directly on the mask outline in the Program Monitor.

Adjust mask opacity

When opacity is applied to a mask it will change the opacity of the footage you have cropped out.

To adjust the opacity of a mask, specify a Mask Opacity value. The slider controls the mask opacity. At a value of 100, the mask is opaque and blocks out any underlying area of the layer. As you lower the opacity, more of the area under the mask becomes visible.

Adjust mask expansion

To expand a mask, specify a Mask Expansion value. Positive values move the borders outward, and negative values move it inward. You can also drag the handle away from the expansion guide to expand the mask area, or toward the expansion guide to contract the mask area.

Invert mask selection

Select the Inverted check box to reverse the masked and unmasked areas.

You can protect areas that you want to leave as-is by masking it, and select the Inverted check box to apply effects to the unmasked areas.

Copy and paste masks

You can easily copy and paste masks between clips or between effects.

Copy and paste effects with masks between clips

When you copy and paste an effect containing masks, the pasted effect has the same masks applied.

Copy and paste masks between effects

You can copy and paste only one mask at a time.

Источник

УРОК: Маски и Трекинг в Premiere Pro CC 2014

Я бы сэкономил много часов рабочего времени, если бы такая удобная функция была реализована в предыдущих версиях замечательной программы Premiere Pro.

Вот несколько реальных примеров удобного использования этой функции.

1. Необходимость размыть (или заблюрить) ту или иную часть видео;
2. Изменить яркость или любой другой параметр на той или иной части изображения.

При помощи новой технологии можно очень быстро и удобно размыть чье-то лицо или, например, номер машины.
Раньше мне пришлось бы переносить футаж в After Effects, затем анимировать там маску и снова возвращаться в Premiere Pro. Но в новой версии программы маска и ее треккинг включены во все встроенные эффекты программы.

Как же анимировать маску в Premiere Pro:

1. Во вкладке Effects я выбираю «Fast blur«. Перетаскиваю его на нужный клип на линейке.
2. Нажатием на Shift+5 перехожу в панель «Effects Control«. Здесь я увеличиваю Blurriness, до 30.
3. Во вкладке «Effect Controls» под самим названием эффекта мы видим две фигуры — эллипсоид и прямоугольник. Это и есть выбор типа маски. Такие же кнопки теперь появились в каждом эффекте программы!
4. Я выбираю прямоугольную маску и сразу же в панели «Effect Controls» появляются все элементы управления масками, схожие с теми, к которым мы привыкли в программе After Effects.
Теперь я могу изменить размер и позицию маски. Если необходимо добавить несколько масок — не проблема. Необходимо лишь нажать на элипс или прямогугольник еще раз.

Но самое главное это автоматическая анимация маски. Для управления трекингом здесь есть четыре кнопки:
track forward, track backward для автоматического трекинга вперед и назад, и, соответственно, покадровый трекинг вперед и назад. Так же возможно указать будет ли трекинг следить только за положением, за положением и вращением или, что необходимо в нашем случае, за размером, положением и вращением.

5. Нажимаю Track Forward. Программа анализирует клип вперед с того места, где в данный момент нахидится playhead. После остановки в правой части окна Effect Controls появляются keyfram-ы. Если теперь отправить этот клип в After Effects, то все keyfram-ы сохранятся и перенесутся туда.

Можно так же отрегулировать размытость краев маски при помощи параметра «Mask Feather«, а также ее прозрачность. Так же можно увеличить или уменьшить маску при помощи параметра «Mask Expansion«.

Подобная функциональность также добавлена в новую версию программы After Effects CC 2014, но это не так, скажем:, революционно, так как в After Effects уже существовало достаточно инструменов для анимации масок.