There are 2 methods for repeat play or looping on the timeline and 1 method for both the Compositor and the Viewer. This works in conjunction with any of the transport buttons or shortcuts in either forward or reverse as usual. The 1 exception is that the Shift key can not be used to either add or subtract audio within the repeat area.
Method 1: Shift-L on the Timeline, repeats the selection per the algorithm outlined next.
When setup, long green lines are displayed across the entire set of tracks which shows the start and end of the loop.
Method 2: Ctrl+Shift+transport button on the Timeline, Viewer, and Compositor
When you play media, the start/end playback positions are saved as if they had been made into temporary labels. They appear on the timeline as purple/yellow hairline markers representing the last start/end labels for the last playback. They can be addressed as if they are label markers using:
You can use these markers for re-selection. Additionally, the selection region can be expanded by pushing the markers using single frame playback. Use frame reverse (keypad 4) to push the start play marker backward, or use frame forward (keypad 1) to push the end play marker forward.
Another handy feature is to use the combination of Ctrl-shift-arrow (left or right) to select the media from the cursor position (red hairline) to the start or end marker by tabbing to the label markers. For example, tab to the beginning of the previous play region using Ctrl-left-arrow to move the cursor to the beginning of last play, then press Ctrl-Shift-right-arrow to tab to the end of the playback region. Now you can clip/play/expand or edit the previous playback selection.
The speed automation causes the playback sampling rate to increase or decrease to a period controlled by the speed automation curve. This can make playback speed-up or slow-down according to the scaled sampling rate, as time is multiplied by speed (Speed × Unit_rate). For more information on changing the speed, read the section on Speed Automation 8.3.
For the keyboards without a numeric keypad or if you prefer to use keys closer to where you normally type, there are alternative keys for the play/transport functions. These are listed below.
|Alt + m||=||stop playback|
|Alt + j||=||forward single frame|
|Alt + k||=||forward slow playback|
|Alt + l||=||forward normal playback|
|Alt + ;||=||forward fast playback|
|Alt + u||=||reverse single frame|
|Alt + i||=||reverse slow playback|
|Alt + o||=||reverse normal playback|
|Alt + p||=||reverse fast playback|
+ Shift key, single frame forward/reverse will include audio; all others
will not include audio.
+ Shift + Ctrl, results in the transport function operating only between the in/out pointers.
The CINELERRA-GG Community, 2021