\end{description}
For ffmpeg and mpeg files, when the Insertion strategy methodology in the \texttt{File $\rightarrow$ Load files} pulldown is chosen to be either \textit{Replace current project} or \textit{Replace current project and concatenate tracks}, the basic session format parameters are reinitialized to match new media. This selects the default asset and determines its width, height, and video length, frame rate, calculates the colormodel, and assumes square pixels to make an intelligent guess about aspect ratio for video. For audio, the sample rate, audio length, and channel count (mono, stereo, or 5.1) are reinitialized. In addition the \textit{Track Size} will be computed and is reinitialized to match the new loaded media. When using \textit{replace} type insertion strategy, the new asset list is the only media in use so that this update saves the user from immediately needing to change the session format to match the only possibility.
\begin{description}
\item[Append in new tracks:] the current project is not deleted and new tracks are created for the source, one set of tracks for each file. New resources are created in the Resources Window. Files go down tracks.
\item[Concatenate to existing tracks:] the current project is not deleted and new files are concatenated to the existing armed tracks, inserted in the same set of tracks of the current project, one after another, in alphanumeric order, starting at the end of the tracks. If the current project has more tracks than the source, the source file will be inserted in the first set of armed tracks. If no tracks are armed, no files will be inserted. New resources are created in the Resources Window.
\item[Paste at insertion point:] the file is pasted into the timeline at the insertion point, on the first set of armed tracks. If multiple files are selected for loading, they will be inserted on the same set of tracks, one after the other. New resources are created in the Resources Window.
\end{description}
For ffmpeg and mpeg files, when the Insertion strategy methodology in the \texttt{File $\rightarrow$ Load files} pulldown is chosen to be either \textit{Replace current project} or \textit{Replace current project and concatenate tracks}, the basic session format parameters are reinitialized to match new media. This selects the default asset and determines its width, height, and video length, frame rate, calculates the colormodel, and assumes square pixels to make an intelligent guess about aspect ratio for video. For audio, the sample rate, audio length, and channel count (mono, stereo, or 5.1) are reinitialized. In addition the \textit{Track Size} will be computed and is reinitialized to match the new loaded media. When using \textit{replace} type insertion strategy, the new asset list is the only media in use so that this update saves the user from immediately needing to change the session format to match the only possibility.
\begin{description}
\item[Append in new tracks:] the current project is not deleted and new tracks are created for the source, one set of tracks for each file. New resources are created in the Resources Window. Files go down tracks.
\item[Concatenate to existing tracks:] the current project is not deleted and new files are concatenated to the existing armed tracks, inserted in the same set of tracks of the current project, one after another, in alphanumeric order, starting at the end of the tracks. If the current project has more tracks than the source, the source file will be inserted in the first set of armed tracks. If no tracks are armed, no files will be inserted. New resources are created in the Resources Window.
\item[Paste at insertion point:] the file is pasted into the timeline at the insertion point, on the first set of armed tracks. If multiple files are selected for loading, they will be inserted on the same set of tracks, one after the other. New resources are created in the Resources Window.