• Playlist Control

Playlist Control

At the heart of AV-Playback is the Playlist control. It is from this control that all primary functions are performed.
Playlist Control

Open Button

1. Open Button
Browse and load an existing playlist file. If the control already has playlist open, this action will close that file first before loading the selected one.

New Playlist

2. New Playlist
Use this to create a new blank playlist. It will open browser window enabling you the name the new file and select where it will be saved. As with ‘Open’, if the control already has playlist open, this action will close that file first before loading the new one.

Add media Clip

3. Add media Clip
Once a playlist is opened this button will be enabled. Use it to choose the desired media clip and add it to the list. 

Select Output Screens

4. Select Output Screens
Clicking will bring up the ‘Display Output Selection Tool’. Use it to select which available video and audio output will be owned by the playlist.

NOTE: Only one playlist can be attached to a destination at a time. When the playlist is closed it will release ownership of that destination, this allows other playlists to assume ownership. 


Clear Selected

5. Clear Selected
This will clear the selection of all media clips. Any that were selected for ‘standby’ or ‘in the gate’ will be purged from the video engines memory.

Edit Mode

6. Edit Mode
To edit certain details of a media clip, this must be enabled. When enabled you can double click and on either the clip’s title, fade rate, link delay time and the punch in or out time to manually edit those properties.

NOTE: While enable you will not be able to select any clips for standby.


Temporary Hold/Freeze

7. Temporary Hold/Freeze
When enabled a playing clip will pause and remain visible at its punch out time point and will remain there until the ‘End’ button is pressed. This feature overrides any of the clips individually enabled functions such as, Fade, Link, Repeat and Hold. Once the ‘End button is pressed, the clip will return back to its starting point and this feature will become disabled.

Temporary Loop

8. Temporary Loop
When enabled a playing clip reaching its punch out time point will automatically return to the punch in point and begin to play again. This looping action will continue until the ‘End’ button is pressed. This feature overrides any of the clips individually enabled functions such as, Fade, Link, Repeat and Hold. Once the ‘End button is pressed the clip will return to its starting point and this feature will be disabled.

NOTE: Both Temp Hold and Temp Loop can be enabled prior to the start of a clip.


Auto Clip Start

9. Auto Clip Start
When checked a clip will automatically begin playing as soon as it is selected. This also applies to selections generated when pressing the Previous or Next buttons.

Previous & Next

10. Previous & Next
Click to select for standby, either the clip before or after the currently selected standby clip. If there isn’t one selected it will go from the one in the gate. If none are selected it will begin at clip number one.

Goto Time

11. Goto Time
Clicking any one of the four will instantly reposition the clip to either 60, 30 20 or 10 seconds before the clips punch out time. If clip is playing when pressed it will remain playing even after it is repositioned.

Transport Controls

12. Transport Controls
These should be self-explanatory but there are a few details that need to be discused:
  • ‘End’ will stop play and automatically blank the video output as well as return the clip back to its starting position.
  • ‘Pause’ is a toggle. When paused the ‘Start’ button will be disabled you must click the ‘Pause’ again to resume play.
  • ‘Start’ will always begin play at the clips punch in point. If the clip’s current position as been manually moved it will automatically be in a paused condition, so if wanting to start from the        manually adjusted point, you will need to click the ‘Pause’ button instead.

Time Display Restraints

13. Time Display Restraints   
This controls the points used to calculate the clips position timecode display. When enabled (blue) time measurement will be from within the boundary’s set by the punch in and out points. If disabled (gray) time is calculated using the clips native start and end points no matter what the punch points are set at.
As an example, let’s say the punch in point is set to trim off the first 3 seconds and the ‘Display Direction’ is set to show elapsed time. Now when the clip’s current position is sitting at the punch in point of 3 seconds, the display will show the time as being zero (00:00:00:00.) Play time will increment up from that point. This helps you to keep track of your actual running time.
Now if the punch out point has been set to trim off the last 4 seconds of the clip and the current display direction is to count down… When the current position is at the punch out point the display would also be showing zero. This helps to keep the operator’s count down call out to the director accurate.    

Timecode Display

14. Timecode Display      
Count down mode.                              Elapse time mode

Time Display Direction

15. Time Display Direction  
These two separate buttons control the counting direction of the current clip position. When the down arrow is red, the display is counting down to zero. Conversely, when the up arrow is green then the display is counting up from zero.
The color of the time display will also change. It will be red when counting down and green when counting up.      


16. Timeline
The timeline control gives a graphical display of the clip’s overall length. The hash marks are automatically scaled based on the clips total length. Their placement interval on the line is approximately one second for each small mark and five seconds for the larger. For long running clips, the interval will change to reflect minutes instead.
The track bar icon along with green scrub line, moves to reflect the play head’s current position. The small timecode display on top of the scrub line will always show the actual position within the clip’s native extents, regardless of current punch points.
By clicking on and dragging the trackbar icon you can manually set the current position of the play head. When doing so, a small preview window will appear showing the video frame in that position. As you move the control, the preview window will follow and continually refresh itself with the correct frame. Once you let go the preview window will disappear
You can also simply hover the mouse cursor over the track bar and then use the mouse’s scroll wheel to move its position. Either can be done even while the clip is currently playing.

Punch Time Slider

17. Punch Time Slider
This pair of controls give a visual representation of the current punch in and out times. Anytime either of the two setting are changed via either typing the time in manually within the clip’s own properties or when changed using the ‘Preview Control’, these marks will reposition themselves.
By clicking on either with the left mouse button and holding, you can drag them to a new desired point. While doing so, a small preview window will appear showing the video frame in that position. Once you let go that position will be locked in and the preview window will disappear.
As you move the control, the preview window will follow and continually refresh itself with the correct frame.
Any changes are saved immediately. You can even do this while the clip is playing

Clip Data Fields

18. Clip Data Fields
When the clip in standby is moved to program, its title appears here. The ‘Standing By’ text label will become blank until another clip is placed in standby.
The data fields contain perinate information as well as user functions.
Clicking most anywhere within the row will select the clip and place it into standby, with the, exception of its checkboxes (Fade, Link, Loop & Hold). Clicking these only effects, a direct change to that function’s current state.
Once the clip is selected the row’s back color will become yellow. This signifies the clip has been loaded into the video engine’s memory, and is now ready for play.
When a standing by clip is instructed to play, it is now considered “In the gate” and the back color will turn to red.
If you left click and hold you can then drag that clip and all it settings to any other index position within the list.
To edit certain properties, ones that requires the need for direct typing of a value, will first require you enable the ‘Edit’ button. When ‘Edit’ is enabled you will be unable to select a clip for standby, instead mouse clicks are treated as a request to edit a particular field. 

TIP: Right clicking on any row will cause a small popup preview window to appear, which contains a thumbnail of a video frame at five seconds in. This time value is fixed and cannot be changed.


Clip Index Number

19. Clip Index Number
Use this number when selecting a clip via a keyboard short key, (CTRL + Clip index number.)

Preview Control

20. Preview Control
Pressing this will launch a new Preview Control loaded with the selected clip.

NOTE: If you are using a playlist that is audio only, this grid column will appear.


Background Image Select

21. Background Image Select
If the clip is a music or audio only clip this icon will appear in the place of the Preview Control icon. When clicked a file browser will appear. Use the browser to select the still image file you would like displayed on the video output while the clip is playing.

NOTE: If you are using a playlist that is audio only, this grid column will not even appear.


Clip Title

22. Clip Title
Displays the clip’s current title. By default, the title is the file name for the clip. This field can be changed by enabling the ‘Edit’ button, double clicking on the cell and then type in a title you prefer. 

Clip Total Duration

23. Clip Total Duration
This field shows the clips full native running time.

Auto FadeSettings

24. Auto FadeSettings
Each video or audio clip can be configured to perform a gentle fade in and out. By default, each new clip added will have this feature enabled along with a 500-millisecond fade duration.  This feature can be enabled or disabled at any time, even while the clip is playing. However, to change its fade rate you must first enable the ‘Edit’ button, then double click on the text field to type in a new value.

Note: This value cannot be empty, it will only accept values of 100-milliseconds or greater.


Link & Loop Settings

25. Link & Loop Settings
Any clip can be linked with another. When one clip ends the next one will begin to play automatically.
To create a link, both clips their Link enabled. It is not required to have any of the linked clips next to one another in the list but the link flow is from top to bottom, so consider that when determining a sequence.
If you wish, a delay of the next clip’s start can be implemented. By default, this vale is ‘0’.
To edit the value, first enable the ‘Edit’ button and then double click on the text field to type in a new value. This delay value must be set on the clip receiving the linked start. This way you can customize the delay value separately for each linked clip.
As with the link any individual clip can also be repeated automatically. When this is checked, the clip will loop continually until the ‘End’ button is pressed.
The same delay value can be applied to the end of each iteration if you do not wish to perform a “seamless loop”.

NOTE: By default, it is understood that when the loop is used, it will be seamless. When first checked the ‘Fade’, Link and ‘Hold’ features will be disabled. This strategy is helpful if you are instructed to loop the clip after it has already begun playing. Once it has been checked, you can re-enable the ‘Fade’ and/or adjust the loop’s delay time.


There however one exception to this rule… The disabling of those of those other features will not occur if the clip already has its ‘Link’ enabled and is part of a sequence of linked clips,   


Looping Linked Clips:

A sequence of ‘linked’ clips can also be looped. If the last linked clip has its ‘Loop’ enabled, then when that clips ends the first linked clip will begin playing. This entire sequence will continue until the ‘End’ button is pressed.   

Clip Hold

26. Clip Hold
Like the ‘Temporary Hold’ function, when checked, each time the clip played it will pause/freeze right at the punch out point and remain visible until the ‘End button is pressed’.

NOTE: Enabling this will automatically disable the ‘Fade’, ‘Link’ and ‘Loop’ functions.


Clip Properties

27. Clip Properties
These fields display more of the clips properties. Native resolution the clip was rendered at, frame rate and its bit stream size.

TIP: The bit stream size is a property you need to pay close attention too, for it is the main reason for a clips possible rough playback performance. Our tests have shown that on an average quality pc, the bit stream size should not exceed 400 megabytes. Of course these assessments may vary from computer to computer but you should think of this limit as a good rule of thumb. 


Punch/Set Time Points

28. Punch/Set Time Points
These show the current punch in and out timecode points. By default, when a clip is added to the playlist these will show the clips native extents. You can edit these directly by fist enabling the ‘Edit’ button and then double click on either, then you proceed to type a timecode point in manually. Click enter when done.

NOTE: When manually entering a value you must adhere to the standard timecode format, insuring that the colons appear between each element of time, (hh:mm:ss:ff).


Info Button

29. Info Button
Clicking this will display window with a detailed information of the selected clip’s properties.

Trash Button

30. Trash Button
Click to remove clip from playlist.

Focus Indicator

31. Focus Indicator
If there are multiple active playlists control visible, then it is important to track which one has keyboard focus when issuing commands via either the keyboard or with the MCS5 Control Surface. Only one can receive commands at a time. The playlist that has this red line visible across the top, indicates that is the one with keyboard focus.

NOTE: To change focus simply hover the mouse cursor over the playlist control or issue the SHIFT + TAB short key command.


Audio Level Meter

32. Audio Level Meter
Actively displays current audio amplitude levels.

Audio Gain

33. Audio Gain
Use to adjust current audio output gain.

NOTE: These settings are saved to each clip separately. This aids the operator in leveling the overall output gain for the whole playlist.   


Standing By Clip Title

34. Standing By Clip Title
Once a clip is selected for standby its title will appear here.
Selecting a clip for standby is simply performed by clicking anywhere within the clip’s row, except for its checkboxes (Fade, Link, Loop & Hold), this is because those properties can be set without enabling the ‘Edit’ button.

NOTE: If the ‘Edit’ button is enabled you cannot make a standby selection.


In The Gate Clip Title

35. In The Gate Clip Title
When the clip in standby is moved to program, its title appears here. The ‘Standing By’ text label will become blank until another clip is placed into standby.

Audio Mute

36. Audio Mute
Click to mute current audio output. Click again to return output gain back the clips saved level.

Link Play

37. Link Play
Another exclusive feature included, is the ability to link transport commands on all active playlists that have this feature enabled.
When playlists are linked, clicking on any of the standard transport controls, such as Start, Pause, End, Scrub and Time Out will cause the exact same command to occur on the other linked playlists. This makes it possible to sync playback to multiple destinations simultaneously.