The most common playback functions are available in the bottom part of the preview area, this series of buttons includes:
Control - Play / Pause
Description : If paused, starts playing the media from the current timeline slider position
If playing, temporarily stops the playback
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Step -1
Description : Shifts the playback backward of one frame. In case the "Step+1 with audio" option is enabled, also the audio will be backwarded.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Step +1
Description : Shifts the playback forward of one frame. In case the "Step+1 with audio" option is enabled, also the audio will be forwarded.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Go to SOM
Description : Moves the playback indicator to the mark-in specified in the EDL
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Go to EOM
Description : Moves the playback indicator to the mark-out specified in the EDL
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Go to start
Description : Moves the playback indicator to the first frame of the clip
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Go to end
Description : Moves the playback indicator to the last frame of the clip
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Jog & Shuttle
Description : Clicking on the "Jog / Shuttle" area allows to alternate between:
Jog - Drag the indicator either to the left or right to play the media at variable positive or negative speed respectively.
Shuttle - Change the playback speed by moving the cursor across the bar, thus making go slower or faster
Please note that the mouse scroll-wheel can be used for jog/shuttle.
With the fix in https://su.etere.com/incident/303667 has been set by default the (mdl_objPlaylist as IMProps).PropsSet('object::audio.stretching', 'true'); to have the audio stretched according to the playback speed.
The following registry keys are also involved:
Computer\HKEY_CURRENT_USER\SOFTWARE\Medialooks\MPlatform\MFile\audio.variable_rate
Computer\HKEY_CURRENT_USER\SOFTWARE\Medialooks\MPlatform\MPlaylist\audio.variable_rate
If set to true (default), it makes the audio adapt to the playback speed by modifying the audio frequency. It makes the audio sound funny at fast playback and heavy at slow playback.
If set to false, there are no changes in the audio frequency, only the audio speed adapts to the playback speed.
Note: In Windows 10, you must turn OFF the “Scroll inactive windows when I hover over them” option, otherwise it won't be impossible to use the mousewheel to set the shuttle.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Timeline slider
Description : Freely position the playback just by dragging and dropping the indicator (the playback will be paused).
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Counter
Description : Shows the exact playback timecode of the previewed media.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Accurate slider
Description : Make the timeline slider (which is initially is related to the entire media duration) to be related only to an interval of 60 seconds (i.e. current point +/- 30 seconds), thus allowing a more precise preview.
This function is useful to, for example, preview too long video files for which placing the time slider at the right point becomes difficult.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Aspect Ratio
Description : Displayed in the upper right, it will indicate the video aspect ratio of the current proxy media
Available for: : EP ; DS ; ( yes ) WMP ; QT ; ( no )
Control - Video Standard
Description : Indicates if the standard of video used by the station is either PAL or NTSC.
Available for: : EP ; DS ; QT ; ( yes ) WMP ; ( no )
Control - Preview
Description : Playback the proxy file only from the SOM mark-in to the EOM mark-out.
Pressing this button is required to preview subtitles.
Available for: : EP ; DS ; WMP ; QT ; ( yes )
Control - Balance
Description : Balance the audio between left and right channels
Available for: : EP ; DS ; WMP ; QT ; ( yes )
NB: If the clip has been modified, save the changes made to the clip for the control keys to work properly.