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Datapath VisionSDI2 vs Blackmagic Decklink DUO


Funkiemitch

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Hi Mitch,

 

The differences is are mainly three:

 

1) - performance

 

Decklink Duo is a dual-input HDSDI card

ie 1280x720p50/59.94/60 & 1920x1080p25/29.97/30 or i50/59.94/60.

 

Datapath VisionSDI2 is a dual-input 3G-SDI card

ie capable of the above AND 1920x1080p50/59.94/60.

 

(p=progressive, i=interlaced)

 

2) - latency

 

Datapath VisionSDI2 has a bit lower latency than Decklink Duo, in our tests.

 

3) - price

 

Datapath VisionSDI2 retails for more than twice the price of a Decklink Duo.

It's a very good card, though.

 

Hope this helps,

 

/jonas

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Maybe a small advantage of Datapath, 

If you use E2s, E1s or similiar VisionCards, you would have only one driver/app in your DisplayPC,

otherwise 2 different driver/app.

 

The major rule of composing A PC, less programs, less complexity as you can.

 

I think we need a suggestion from Jonas, if it is a small pro for SDI2, or negligible...

 

Kilic

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Maybe a small advantage of Datapath, 

If you use E2s, E1s or similiar VisionCards, you would have only one driver/app in your DisplayPC,

otherwise 2 different driver/app.

 

The major rule of composing A PC, less programs, less complexity as you can.

 

I think we need a suggestion from Jonas, if it is a small pro for SDI2, or negligible...

 

Kilic

 

I would regard this as a BIG pro for VisionSDI2.

 

/jonas

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  • 2 months later...

Off Topic

 

FYI - I may have done something a little confusing here, so let me clarify.

The post by SkyIsFalling (Roman) above in this thread (datapath sdi2 vs deckline DUO)

was not originally posted here. It was submitted as a new thread. 

Rather than tell him to search, I went ahead and did it for him,

then merged his submission into this thread.

(My hope is to keep the knowledge base here as compact as possible.)

 

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Back on topic,

Roman,

from a Reliability point of view, experience in the field 

suggests the DataPath wins that comparison hands down.

It is far less finicky about the host system (motherboard compatibility, etc.).

DataPath drivers do their job cleanly without mucking with things that effect WATCHOUT.

BMD changes a few less used decoders like MJPEG causing those codecs to fail in WATCHOUT.

DataPath does no such nonsense.

Furthermore, DataPath Live Media object settings are far more forgiving than BMD.

 

Of course, the BMD Decklink series is far lower cost (and lower bandwidth)

and with proper care can be made to work. But as such, they would have to rate as less reliable.

 

The DataPath accepts up to 1080p, DeckLink series tops out at 1080i/720p.

BMD has an extreme series that exceeds 1080p

and is priced in the same neighborhood as the DataPath, 

but BMD extreme drivers are comparable to the DeckLink series (and in the comparison that is not a good thing). :o

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