UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Television Standards Converters, Modulators etc

Notices

Television Standards Converters, Modulators etc Standards converters, modulators anything else for providing signals to vintage televisions.

Closed Thread
 
Thread Tools
Old 25th Nov 2016, 1:28 pm   #1
pastyboy
Hexode
 
pastyboy's Avatar
 
Join Date: Nov 2015
Location: Cornwall, UK.
Posts: 270
Default Composite video from HDMI port

Thought I would try this whilst my pasties were in the oven.

As we all know a well known good source of old programmes like Steptoe, On the busses etc can be found on youtube etc. So I thought of streaming in into either a UHF modulator or aurora for 405 lines. I found a box of tricks for no money and it seems to work reasonably well, the PC screen looks awful on a 10 inch UHF BW portable however video looks good.

Gadget is a MINI HDMI2AV switchable from ntsc and pal with a comp video IP and stereo audio IP's. Plugged it into the HDMI port on my laptop and it worked straight out of the box !

I doubt this is original in any way and apologies if its old news just though I would share it.

Stuart
__________________
I'm a callins, get me outta here ! (I am also an erie but it's my day off)
pastyboy is offline  
Old 25th Nov 2016, 2:04 pm   #2
wd40addict
Octode
 
wd40addict's Avatar
 
Join Date: May 2009
Location: Stevenage, Herts. UK.
Posts: 1,515
Default Re: Composite video from HDMI port

https://www.vintage-radio.net/forum/...d.php?t=110721
wd40addict is online now  
Old 25th Nov 2016, 6:42 pm   #3
Restoration73
Nonode
 
Restoration73's Avatar
 
Join Date: Jun 2013
Location: Surbiton, SW London, UK.
Posts: 2,801
Default Re: Composite video from HDMI port

I just got this to enable my SD video projector to show HD;

https://www.cricklewoodelectronics.c...Converter.html
Restoration73 is offline  
Old 2nd Dec 2016, 7:34 pm   #4
dominicbeesley
Octode
 
dominicbeesley's Avatar
 
Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 1,885
Default Re: Composite video from HDMI port

I've got one of those...its awaiting being cracked open to see what it inside and if there is any chance of hacking to make 405 lines...
dominicbeesley is offline  
Old 13th Dec 2016, 12:32 pm   #5
dominicbeesley
Octode
 
dominicbeesley's Avatar
 
Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 1,885
Default Re: Composite video from HDMI port

I finally got round to locating the thing and popping the lid off last night. It appears to contain 4 major components for video.

- An anonymous micrcontroller
- An EPROM containing the HDMI decryption keys
- A EP9351 which decodes HDMI serial into 3x8 bit parallel data
- A MDIN 165 digital to analogue video encoder chip.

If I get round to it I may try soldering a load of tiny wires to the pins of the EP9351 and hijack the data as it goes by and feed it to an FPGA.

THE MDIN 165 seems to be the chip that does all the heavy lifting in terms of encoding but I can't find a full datasheet for it - it would be great if that could be persuaded to do the 405 linedness!

D
dominicbeesley is offline  
Old 16th Dec 2016, 11:00 am   #6
lloydwells
Heptode
 
Join Date: Aug 2016
Location: Dumfries, Scotland, UK.
Posts: 549
Default Re: Composite video from HDMI port

Just got myself one of these £4 on ebay from a company in Manchester.
lloydwells is offline  
Old 16th Dec 2016, 5:10 pm   #7
linescan87
Heptode
 
linescan87's Avatar
 
Join Date: Mar 2014
Location: Meath, Ireland
Posts: 547
Default Re: Composite video from HDMI port

I also received one in the post on Monday. Purchased from Aliexpress for the price of a pint. Great little device.
linescan87 is offline  
Old 16th Dec 2016, 11:33 pm   #8
reelguy
Heptode
 
Join Date: May 2003
Location: Bexhill on Sea, East Sussex, UK.
Posts: 746
Default Re: Composite video from HDMI port

Would one of these gadgets work with an Amazon fire stick plugged into a vhs recorder. .?
Or the output from a hdmi DVD recorder ? Just a thought.
Peter W .... Reelguy
reelguy is offline  
Old 17th Dec 2016, 5:30 pm   #9
dominicbeesley
Octode
 
dominicbeesley's Avatar
 
Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
Posts: 1,885
Default Re: Composite video from HDMI port

For £4 it's got to be worth a try!

D
dominicbeesley is offline  
Old 18th Dec 2016, 4:57 pm   #10
Telleadict
Hexode
 
Join Date: Dec 2005
Location: Nr. York, North Yorkshire, UK.
Posts: 348
Default Re: Composite video from HDMI port

Hello Peter (post 8)

I haven't got one of these but one of the user reviews at this Amazon page seems to be using theirs with Fire TV unit if that's any help.

Will
Telleadict is offline  
Old 18th Dec 2016, 8:30 pm   #11
reelguy
Heptode
 
Join Date: May 2003
Location: Bexhill on Sea, East Sussex, UK.
Posts: 746
Default Re: Composite video from HDMI port

Thanks for that .I'll get one and try it out.
Peter W......reelguy
reelguy is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 1:44 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.