RTMP to SDI

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ievgeniilarin's picture
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Kyiv
Ukraine
Joined: 13/02/2013
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RTMP to SDI

Hi guys.

Maybe it is silly question, but is there any real way to capture RTMP-stream and output it to SDI?

Here is my situation. We are specialized in producing local sports for web-streaming. Occasionally we are requested to deliver signal to  a local TV-station. Paying for uplink truck and whole satellite thing is way beyond our budget.

I'm not really familiar with IP-based workflows that's why capturing RTMP-stream was my first idea.

I found this rack mount device called DVEO D-Streamer IP/DIG. One of DVEO's press relises announced $4000 price for the device.

What do you think?

Thank you.

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Milton Freewater,
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Joined: 22/07/2011
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What you need is a set top

What you need is a set top box and SDI converter. I would be a bit concerned with image quality if your internet stream is to low of a nitrate. There may also be SDI decoders you can use also. For a dedicated stream you could also use a combination of ubiquity radios to make a high speed IP connection with a dedicated set of encoders and decoders.

Edit: just looked at that link you posted. Looks like what you are looking for. Just make sure it runs stable, and can survive a hard power cycle if you need that. Do look on to using a wireless back haul if you are streaming a low bitrate though. I recommend going as high as you can possibly with a dedicated encoder for what you want to do.

ievgeniilarin's picture
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Image Quality

With two dedicated hardware streamers we are able to produce two separate streams — TV-delivery (high bitrate) and web-delivery (low bitrate).

I'm just bit concerned about bandwidth on location and bitrate we need to provide for TV.

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Milton Freewater,
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There are other decoder

There are other decoder solutions that would cost more around $1k, but they are not nearly as flexible as that one.  For Tv delivery, is this digital or analog broadcast?  Do you know if SDI is their prefered format, or would that be something else.  Our digital transmitter is on its way for the local station I help with, and it will have the ability to mux an IP stream as an input, although the encoder for that is expensive.

Once you know what bit rate they want, probably north of 10Mbps for mpeg 4 HD, all you have to do is get the signal there.  That depends on internet connectivity, or proximity to the station site.  If you are within 50km line of sight, then you should set up a dedicated wireless link.  Ubiquiti wireless, ubnt.com, has some great gear for this that can support 50-100Mbps.  I have We use two rocket M5 radios with 33dB dishes to go from our station office to the tower.  Not that you would need that narrow of a dish, we just have tons of noise from other wireless activity near our tower.  I have long dreamed of building a truck mounted system that could be used for on location stuff.  Be sure to check to see what frequencies are used in your area though, we basically had to wedge between two channels and use the strong dish to get our signal 20db louder then everything else.  That yields about 80Mbps over 10 miles though.

ievgeniilarin's picture
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Connectify Dispatch

For TV-delivery, it is analog. I don't know if SDI is their preferred format. If it's not, we always can use one of those mini converters.

As to bandwidth I found promising piece of software. It's called Connectify Dispatch. Potentially it can solve two problems — speed and reliability. Again if it works, we can build USB 2.0 patchbay and use dozen of 3G-modems. I sent request, asking about combined speed upload and interaction with RTMP, to their support.

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Milton Freewater,
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     If they can handle an

     If they can handle an analog signal, the gear to encode and decode will be much cheaper, so that would be worth asking about.  The TV station I work with currently is still running analog.  We have a 10 mile link from our office to the tower using an IP wireless link.  What we use is an AVN-200 encoder with an amino decoder.  The amino decoder has both component, S-Video, and composite output.  It's only disadvantage is the decoder only supports a UDP multicast stream while the encoder can do RTMP.  Something else that might work would be a pair of Marshal VS-11 encoder/decoder pairs.

     Some things to keep in mind are UDP multicast requires minimal delay, jitter, and almost no packet loss.  If you can set up something with RTMP or some other TCP based protocol with an enforced delay it could help with that.  Do you have to move around much, or do you mainly broadcast from location?

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Quebec,
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Check for

Check for Marshall Electronics VS-xxx series. Not certain if it read RTMP but we used 2 pair of this last 18 month and in many situation and it solved a lot of headaches. Most time we combine with 5.8ghz pair of antenna to send signal to local tv facilities. It's costt effective and work very well.

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Pasadena
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Teradek Cube is the way to

Teradek Cube is the way to go.  You need an encoder at your remote location and a decoder at the TV studio.  Inputs SDI (optional HDMI)... and the decoder allows direct output to SDI in the studio.   

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Shanghai,
China
Joined: 07/06/2017
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RTMP Hardware decoder

HI,we have Rtmp hardware decoder,with HDMI SDI and CVBS output interface,and also suport UDP,HTTP,HLS. if you interesting ,plesase send mail to us,

rtmpdecoder@126.com

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Toronto,
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Joined: 11/04/2017
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RTMP to SDI Decoder

I realize that this is an old thread but someone might still find the answer useful. We have a $2500 USD decoder that can do RTMP (or even HLS) to SDI.

The decoder is called NOVUS-RD, if anyone has any questions I'll be happy to answer them.