\hline
Sample zoom & Duration visible on the timeline \\
Amplitude & Audio waveform scale \\
- Track zoom & Height of tracks in the timeline \\
+ Track audio zoom & Height of audio tracks \\
+ Track video zoom & Height of video tracks \\
(type) & Automation Type \\
Curve zoom & Automation range minimum and maximum \\
Selection change & 3 boxes with starting point, length, and ending point \\
The next option is \emph{amplitude} and it only affects the audio waveform size. \texttt{Ctrl-$\uparrow$} and \texttt{Ctrl-$\downarrow$} are shortcuts used to change the amplitude zoom as an alternative to the down arrow to the right of the numerical size.
-The \emph{track zoom} affects all tracks and determines the height of each track.
-If you change the track zoom, the amplitude zoom will be changed also so that the audio waveforms
+The \emph{track audio and video zoom} affects all tracks of that type and determines the height of each track.
+If you change the audio track zoom, the amplitude zoom will be changed also so that the audio waveforms
are proportionally sized.
-Shortcuts, \texttt{Ctrl-Pgup} and \texttt{Ctrl-Pgdown}, change the track zoom.
+Shortcuts, \texttt{Ctrl-Pgup} and \texttt{Ctrl-Pgdown}, change the track zoom to the next level simultaneously for all of the audio and video tracks.
\emph{Automation type} is used for selecting one of the following: Audio Fade, Video Fade, Zoom, Speed, X, or Y (X and Y are for the compositor's Camera and Projector). When an auto line is present on
the timeline and is being manipulated, a small square the same color as the line will be shown to
\subsubsection*{The Viewport}%
\label{ssub:viewport}
-The \textit{viewport} is a window on the camera that frames the area of source video. The size of the current track is used for the initial size of the viewport. A smaller viewport, for example ($640\times480$), captures a smaller area; whereas a larger viewport of ($800\times600$) captures a larger area. If the captured area is larger than the source video, the empty spaces will be automatically filled with blanks. To change the size and aspect ratio of the viewport (Camera) of a single track, right-click on the track in the timeline and choose Resize Track. Here we can vary the height and base of the viewport in pixels or use the ratio between the sides. With OK we will see the change in the Compositor window with the new dimensions reflected in the green box. We can have different size viewports for each video track on the timeline. To go back, reset the viewport to the original value. After the viewport is defined, the camera needs to be placed right above the area of interest in the source video. Operations to control the location of the camera are as follows:
+The \textit{viewport} is a window on the camera that frames the area of source video. The size of the current track is used for the initial size of the viewport. A smaller viewport, for example ($640\times480$), captures a smaller area; whereas a larger viewport of ($800\times600$) captures a larger area. If the captured area is larger than the source video, the empty spaces will be automatically filled with blanks. To change the size and aspect ratio of the viewport (Camera) of a single track, right-click on the track in the timeline and choose Resize Track. Here we can vary the height and base of the viewport in pixels or choose the multiplication coefficient for each side (Scale). With OK we will see the change in the Compositor window with the new dimensions reflected in the green box. We can have different size viewports for each video track on the timeline. To go back, reset the viewport to the original value. After the viewport is defined, the camera needs to be placed right above the area of interest in the source video. Operations to control the location of the camera are as follows:
\begin{enumerate}
\item In the compositor window you should see the selected track.
The levels window displays the output audio levels after all mixing is done.
The visible range of the sound level meters is configurable in \texttt{Settings $\rightarrow$ Preferences, Interface tab} under the Operations section.
+\begin{wrapfigure}[18]{O}{0.3\linewidth}
+ \centering
+ \vspace{-2ex}
+ \includegraphics[width=0.5\linewidth]{volume_meter.png}
+ \caption{Sound Level Meters Window}
+ \label{fig:volume_meter}
+\end{wrapfigure}
+
Sound level meters can be toggled in the viewer and compositor windows with the show meters button.
They also appear in the patchbay when the track is expanded and in the recording monitor when audio is being recorded.
In the patchbay they are the sound levels for each track after all effects are processed and before down-mixing for the output.
Most of the time, audio levels have numerical markings in dB but in the patchbay there is not enough room.
-\begin{wrapfigure}[15]{O}{0.3\linewidth}
- \centering
- \vspace{-4ex}
- \includegraphics[width=0.5\linewidth]{volume_meter.png}
- \caption{Sound Level Meters Window}
- \label{fig:volume_meter}
-\end{wrapfigure}
-
The sound level is color coded as an extra means of determining the sound level.
Even without numerical markings, the sound level color can distinguish between several ranges and overload.
Look at the color codings in a meter with numerical markings to see what colors correspond to what sound level.
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