LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

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G4GUO
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LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby G4GUO » Sun Jun 18, 2017 8:31 am

While searching YouTube I found this video.

It looks like a easy to hack cheap MPEG4 to TS encoder for $40
From the video it also looks like you can change the encoding bitrate from the hidden GUI.

https://www.youtube.com/watch?v=SAvGylthpkU

Here is the associated blog

https://blog.danman.eu/new-version-of-lenkeng-hdmi-over-ip-extender-lkv373a/

Seems like some versions of it use TS and others use RTP

- Charles

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G0NMY
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Re: LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby G0NMY » Sun Jun 18, 2017 7:00 pm

Could this be used to remote stream to batc.tv repeater or private stream?
Looks interesting.
:)
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G4GUO
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Re: LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby G4GUO » Mon Jun 19, 2017 8:29 am

I don't know. It just looks like a cheap HDMI capture device.
I have a couple on order from China so will report back after I get them.

- Charles

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Re: LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby G8GKQ » Mon Jun 19, 2017 9:34 am

I thought that it looked very interesting for enabling HD transmissions from my HDMI camera using DATV Express or Portsdown. I've ordered one as well. £28.99 inc postage (by the slow boat). No promises about future capability though!

Dave

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Re: LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby markaren1 » Wed Jun 21, 2017 10:05 am

This does look interesting. From the embedded youtube blog above, protocol is HDbitT (http://www.hdbitt.org/what-is-hdbitt.html)

Was given an older IP to HDMI RX which has a TF-680 SOC (http://www.jlink.com.tw/tw/pro_list02.h ... del_id=145). SOC appears to use MJPEG for lower latency then H.264.

Am assuming that H.264/IEC13818 has latency issues since you have to wait some indeterminate amount of time for an anchor-frame before you can start re-stitching the whole mess back together again.

It is well worth reading through the whole of the blog, and watching the whole video that Charles linked to, there is clearly some interesting stuff going on.

If some brave soul prises the heat sinks off one of the newer units, would be very interested to see what could be found about them.

... and for those who like interesting documents, take a look at docin.com. Haven't figured how to set up an account yet, but it looks like quite a resource.

-Mark

G4GUO
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Re: LKV373A Hackable HDMI to UDP TS MPEG4 encoder for $40

Postby G4GUO » Fri Jun 23, 2017 5:54 am

danman has confirmed that you can load an older version of the firmeware
onto the device to get Transport Stream support. described in Update 14. dec
on his blog.

- Charles


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