...
...
| Expand | ||||
|---|---|---|---|---|
| ||||
|
...
Overview
Video wall creation usually consists of:
...
BrightSign software and hardware simplifies these tasks. This documentation describes the primary methods available to BrightSign customers to create video walls using our software and hardware. Select a method based on your BrightSign player(s) and the video assets you want to display:
| Note |
|---|
You cannot use BrightWall video creation methods if you are using the Standalone publishing method, because you must be connected to a network (additional configuration is required after publishing the presentation). |
Video Walls using XC5 Players
...
Playback must be started simultaneously on all players.
You must periodically re-synchronize to correct for sync drift over time.
You must also attempt to synchronize output signal generation timing (known as "genlock" or "v-sync" synchronization).
Downstream processing on players can result in out-of-sync playback, even if players are on the same frame, corrected for drift, and have the same redraw timing:
Display smoothing or scaling can result in a frame or redraw delay. To fix this, disable display processing if possible. Otherwise, ensure that all displays are set and connected identically.
Different display sets may have different timing if unlinked parallel processors are used for wall or tile processing.
Snapshot Lag
When taking a snapshot of an XC5 player, snapshots are captured one at a time from screen 1 to 4. This results in a frame offset of three to four frames between screen 1 and screen 4 since the offset increases by one frame of video between each screen.
...
Players in a sync configuration should be of the same model family. Mixing model families can work but is not recommended. For example, players in the XT4 family are similar enough to be used, but players with very different performance like XT4 and LS4 may yield inconsistent results.
All media must strictly conform to supported specifications. Even media that is slightly out-of-spec may play back fine on its own but can cause issues with synchronized playback. For example, if the bitrate is too high, it may affect playback on one of the synchronized players.
The leader player must have OS/firmware version that is the same or older than the follower players.
Synchronization cannot be used simultaneously with roStreamQueue for seamless clip-to-clip transitions, so sync presentations that have a playlist including more than one video will have a slight pause between the videos.
Seamless looping of a single video is supported with synchronized playback. The seamless looping requirements are:
Use an MP4 or MOV container
There must be no audio track, or SOWT (PCM little-endian) audio track
All tracks must be exactly the same length (including the sample length)
We recommend using only one zone of video per player to ensure best results.