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This topic comprises 3 pages: 1 2 3
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Author
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Topic: Live-playing all the time...viable?
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Jim Cassedy
Phenomenal Film Handler
Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 09-13-2017 07:30 PM
quote: Mark Gulbrandsen
Can one "Live PLay" On either of the Dolby servers?
You can, live play on the Dolbee DSS'es, as others have pointed out.
In my world of production, press, preview & QC screenings, I've had
to do it often as drives are often delivered at the last minute or even
hand carried by the director or client to the projection room minutes
prior to the scheduled screening start.
The clients don't always want to wait for ingestion, as they have other
meetings to go to or flights to catch. I explain the 'risks' and then just
pop the drive in & play it "cold".
But I'm not sure you can include the "live drive" in a playlist with trailers,
and cues, etc. I think I was told this once, but since I don't deal with
nonsense like trailers or automation cues, I've never tried it.
Maybe someone can clarify that point for sure. . .
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Carsten Kurz
Film God
Posts: 4340
From: Cologne, NRW, Germany
Registered: Aug 2009
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posted 09-22-2017 02:19 PM
Looks as if Barco did a nice job on this recent ICMP update. Instant play, or 'Play Now' as Barco calls it, works nicely from a standard CRU ingest drive connected through USB3.0 (in this case, a USB3.0 MoveDock). I even tried it successfully through USB2.0. DCP had an average data rate of approx. 29MByte/s, which is not on the lower side of DCP data rates. Actually it was a 4k Scope feature with 7.1 sound (Hitman's bodyguard). The USB2.0 connection certainly was on the edge, but played without issues. During a test ingest of the same feature through both interface speeds, the ICMP ingest monitor indicated about 30Mbytes/s for USB2.0, and about 60MBytes/s through USB3.0.
When I turned off the ingest drive power during live play, it took around 15s for the image to freeze over USB3.0, and around 5s over USB2.0.
There is no visual crashing or such, image and sound just come to a halt. Barco say that if it happens due to a buffer underrun, playback would resume from the frozen position as soon as possible. Didn't happen once during my tests.
There is no significant delay between selecting a CPL for Play Now and the playout start, just a few seconds for the player to load the content and prepare playback.
I tried it with a german 7.1 VF. KDM needs to be ingested before Play Now is started from the ingest manager. You can't build playlists using this feature. Of course you could run your preshow and standard cues from your normal preshow playlist and then start the main feature manually.
I would never reccommend doing this on a regular basis, but when necessary, it seems to work. Wondering who would actually do this on a regular basis if you miss all playlist features.
Aside from using it for live play for a paying audience in an emergency, I noticed it is also quite useful that you can browse through your library or an ingest drive loaded with many CPLs, quickly looking into even encrypted DCPs, as long as the keys are loaded. We tend to get complicated Multi-CPL OV/VF packages here, and being able to watch short passages to identify them properly is a nice to have. Yes, you can cue to any feature position in stop mode during play now, just as with ingested features.
One important thing to note is that once a CPL is loaded in Play Now mode, that specific drive can no longer be seen in ingest manager. You have to eject the CPL from the player before you can see the content again and perform a regular ingest. There is no background ingest taking place during Play Now - after playout has finished, the CPL is still not ingested on the server.
- Carsten
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Jim Cassedy
Phenomenal Film Handler
Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 10-04-2017 11:19 AM
quote: Carsten Kurz
Wondering who would actually do this on a regular basis
if you miss all playlist features.
Well, I can't really say I do this on a 'regular basis' but in my situation,
working mostly in several professional private screening rooms, I've
often had to resort to live play because material arrives at the last
minute, often hand-carried by a client who is too busy to wait around
for ingesting.
The lack of being able to build a playlist doesn't affect me anyway,
since my playlists, when I do build one, only consist a 10sec black
'slug' before whatever I'm playing and another 2secs of black at the end.
Everything (show start, lights, curtain, masking, picture & sound
formats, etc) are run manually.
(I'm not even sure the automation is connected or working in at least
one of the locations I work at. I've been there 5 years & never used it. ![[Cool]](cool.gif) )
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