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30 channel synced video with audio presentation - frame synced

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Yasmin
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I am looking to upgrade from very old ADTEC media players to BrightSign LS425s for a display that is 30 channels of video with audio. It needs to be frame synced. In the current set up, if one of the ADTEC players loses power, when it comes back on, it will scrub through the video until it finds sync with the other players. The video is 90mins long, so this is useful. I would like to have a similar function in the new set up with the LS425s.

So far, I have been able to use BrightAuthor 5.0 to author a synced multi-screen presentation that re-syncs on each loop point. It plays reliably. The players don't drift or lose sync. But, if one player loses power it simply stays black until it receives the sync command on the loop point. It doesn't jump back in to match with the other players.

I began creating a BrightWall presentation to get frame sync, hoping that would result in a player being able to jump back in at any point in the video if it loses power. Then I found out that in BrightWalls, only the Leader player will output audio, so this isn't an option for me. 

Does anyone know of a way I could author media to be able to output audio on all channels AND jump back in & find sync with the other players at any point in the video if a player is powered off?

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    Yehoram O.

    A player can "chase" another leader player and catchup, although BrightWall might not make use of that capability.

    Making use of the chase feature and playing audio from all players could be done with a non-BrightWall presentations, or with BrightScript.

    Is that a single installation which rarely get content update?

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    Yasmin

    Thank you for replying to my post Yehoram.

    It is a single, permanent installation that never gets content updates. Using the chase feature and playing audio from all players is exactly what I need to do. 

    Can you tell me how to do it with a non-BrightWall presentation, or with BrightScript? Or direct me to instructions for the process? I have experience creating presentations in BrightAuthor but have not used BrightScript before. I can try either or both methods though.

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    ProVizion LED Signs

    Thirty channels is a serious wall — a few practical notes from building large synced video walls:

     

    Network is everything at this scale. Put the players on a dedicated VLAN or physical network with nothing else on it. Sync traffic is timing-sensitive, and a busy shared network will show up as drift between zones. Make sure multicast isn't being filtered by the switches, since sync usually depends on it.

     

    On audio across all 30: decide whether you truly need every player outputting audio or just a subset of zones. Thirty unsynchronised audio outputs in one space will phase and smear. If it's one room, consider driving audio from a single player or a dedicated audio zone rather than all 30 — much easier to keep clean.

     

    And since it's a permanent install with rare updates: burn in the full 30-player sync for at least 48 hours before sign-off. Sync drift that isn't visible in hour one can creep in by hour twenty. Also keep one spare player imaged and ready — at 30 units, a hot spare is cheap insurance.

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