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 Post subject: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Fri 02, 2018 11:15 pm 
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Location: Woodinville, WA USA
Can anyone recommend a good quality HDMI-to-composite converter? My goal is to play video content (Netflix, etc.) on my iPhone and pipe the output to my Blonder-Tongue agile modulator to broadcast to vintage TVs in my house. I already have an Apple AV adapter that plugs into the phone's Lightning port and gives HDMI output.

Shopping around online, I see quite a few options, ranging in price from under $20 to a few hundred bucks. Has anyone tried one of these?

Thanks!

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 2:25 am 
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Location: Binghamton NY area
I use this HDMI2AV I picked up a couple off eBay for about $6 each. I feed a Roku into it as a source. They both work flawlessly.


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 2:29 am 
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Joined: May Sun 07, 2017 11:35 am
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Location: Belrose, NSW, Australia
I've used this one and it works well.

http://www.altronics.com.au/p/a3504a-hd ... converter/

You may be able to find the same model from a local source but Altronics does ship worldwide AFAIK

That looks like the same one, just seen it!

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 2:51 am 
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irob2345 wrote:
I've used this one and it works well.

http://www.altronics.com.au/p/a3504a-hd ... converter/

You may be able to find the same model from a local source but Altronics does ship worldwide AFAIK

That looks like the same one, just seen it!


WOW What a huge difference in price for the exact same unit. :shock:

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 5:30 am 
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Joined: May Sun 07, 2017 11:35 am
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Location: Belrose, NSW, Australia
Yes I saw that.

However, by the time you take the 20% wholesale discount you get by registering, the exchange rate (AU$1 = US$0.68) and the shipping cost it works out not that much different for us here. Plus we get it the next day.

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 10:22 pm 
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Location: Seattle, WA, USA
Last year I bought and tested every model I could find on the market today and I was dissatisfied with all of them. The problem is that none properly handled the 16x9 to 4x3 conversion. What I wanted was one that would center-cut the 16x9 image. However, I would have settled for a letter-box conversion (black bars on the top and bottom). None would do this. They all distorted the image by compressing it horizontally to fit.

-Matthew

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sat 03, 2018 11:26 pm 
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Ugh, I hate those compressed pictures.

What about the more expensive models? I haven't looked at details, but perhaps they would offer more control than a basic converter?

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sun 04, 2018 1:57 am 
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7jp4-guy wrote:
Last year I bought and tested every model I could find on the market today and I was dissatisfied with all of them. The problem is that none properly handled the 16x9 to 4x3 conversion. What I wanted was one that would center-cut the 16x9 image. However, I would have settled for a letter-box conversion (black bars on the top and bottom). None would do this. They all distorted the image by compressing it horizontally to fit.

-Matthew

Using a Roku box as a source, I had no issue with that. I set the output of the Roku to 4X3. It seemed work fine.

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sun 04, 2018 6:42 pm 
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7jp4-guy wrote:
Last year I bought and tested every model I could find on the market today and I was dissatisfied with all of them. The problem is that none properly handled the 16x9 to 4x3 conversion. What I wanted was one that would center-cut the 16x9 image. However, I would have settled for a letter-box conversion (black bars on the top and bottom). None would do this. They all distorted the image by compressing it horizontally to fit.

-Matthew

You could letter-box it yourself by mis-adjusting the height control. :) You could even add a switch and a resistor to make the height change easy!

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Sun 04, 2018 10:28 pm 
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Location: Belrose, NSW, Australia
The advantage of Tom's pragmatic suggestion is you don't lose any resolution.....

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Mon 05, 2018 3:54 am 
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7jp4-guy wrote:
Last year I bought and tested every model I could find on the market today and I was dissatisfied with all of them. The problem is that none properly handled the 16x9 to 4x3 conversion. What I wanted was one that would center-cut the 16x9 image. However, I would have settled for a letter-box conversion (black bars on the top and bottom). None would do this. They all distorted the image by compressing it horizontally to fit.

-Matthew

If you set the source device to 480P or 480I resolution, you may/should also get an option in that device to choose between 4:3 and 16:9 aspect ratio; choose 4:3 and you should get a proper picture. In DVD players, these is/was also an option to choose between "4:3 letterbox" and "4:3 pan-and-scan"; look for that as well. All of these will be in the source device, none of the converters will have those options.

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Tue 06, 2018 1:34 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Southwestern,Ontario Canada
What about one of these units ? I bought one off of E-bay for $15 ( looks like it was never used, & comes with a remote) and it has a ton of inputs and different formats. HDMI, USB, component , etc. I hooked it up to my predicta. Check out the video. Much better deal I think. IView- 3500 STB
https://www.youtube.com/watch?v=fhYgD3HOBkI
Tony


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Feb Tue 06, 2018 3:33 am 
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Location: Sherwood, Oregon
How about this $262.99 unit:
https://www.ebay.com/itm/Smartavi-V2V-HDAVS-HDMI-to-AV-Converter-Downscaler/201405972441?hash=item2ee4bb3fd9:g:pBkAAOSwu4BVyoA5
It better work for that price!


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 2:21 am 
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Location: Woodinville, WA USA
Has anyone tried this HDMI to AV converter?

https://www.ebay.com/itm/1080P-HDMI-to- ... SwJ9VdjFpQ

I bought one like the first unit pictured above, and it worked well for a while, but now it's getting flaky. Just wondering what else is out there.

Phil Nelson
Phil's Old Radios
https://antiqueradio.org/index.html


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 3:34 am 
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Location: Detroit, MI USA
I need to find something not expensive to go from USB or a computer's monitor connector (is that called VGA?), there are no HDMI or other outputs on this commercial computer, to any possible input on a flat panel 60" big screen Sony that will show a decent picture on that large of a screen.

The person inquiring with me to help with this wants to use it to watch you tube music videos on the big screen and is unwilling to modify the computer to have a different sort of output, including not adding any software.

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 3:59 am 
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Joined: May Sun 07, 2017 11:35 am
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Location: Belrose, NSW, Australia
OK, assuming the computer's output is VGA and the screen does NOT have a VGA input, just google "VGA to HDMI adaptor"

Some computers have a larger connector that has digital outputs which convert better to HDMI. (I forget what they call this!)

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 11:39 am 
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Joined: Feb Wed 07, 2018 6:52 pm
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Location: Stone Mountain, GA
irob2345 wrote:
Some computers have a larger connector that has digital outputs which convert better to HDMI. (I forget what they call this!)


Called DVI. You can get DVI to HDMI cables cheap.

VGA has a 15-pin D connector. Note: VGA to HDMI is not common and requires a more complicated interface. Most are HDMI to VGA so make sure the output side is HDMI.

DVI has more pins and some larger pins:
Image

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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 3:20 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1008
Location: Southwestern,Ontario Canada
I bought an HD Fury about 10 years ago for my Toshiba projection tv that did not have HDMI inputs. The unit worked flawlessly all that time and produced a great picture. It did output RGB though. I haven't looked at the various models since. I don't use the unit anymore as I upgraded to a new tv since. They were the first company to have "broken" the HDMI interface and had a hassle with the motion picture association over HDMI, as it was a no-no. If you scroll down to the "Main Features", it talks about centering images.
This is the model I bought, but now I see they have other models.

https://www.hdfury.com/product/hd-fury-x3/

https://www.hdfury.com/

tony


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 4:09 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1008
Location: Southwestern,Ontario Canada
Thought I'd post another option for video playback. I can't say enough about the Popcorn hour A-500. It plays every format you can throw at it. It will even play the iso format, which is dvd format. The "Honeymooners" for example can be played direct from the harddrive. Just add your own harddrive upload all your content to it and go. There are a few youtube reviews on it as well.

https://www.cloudmedia.com/?product=a-500

https://www.avforums.com/reviews/popcor ... view.12623

just my 2 cents..
Tony


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 Post subject: Re: HDMI-to-composite converter for home broadcasting?
PostPosted: Jul Fri 17, 2020 5:38 pm 
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Location: Pewaukee, WI
The first one shown in this thread will do letterbox 16x9 output. My Win 10 PC doesn't want to support 4x3 HDMI output (even in the desktop resolution menu) so to eliminate the letterbox/pillarbox combo playing 4x3 videos on this rig creates I use an Extron video scaler that converts composite to VGA and can stretch or shrink the video as needed in both axes independently then I feed it to a cheap VGA to composite adapter that also can do some image rescaling....the Exitron can do 480i VGA output and that eliminates resolution upscaling/downscaling lag and most of the image artifacts (the stretch shrink does produce a bit of artifacts but not near as bad as that plus say an upscale to 800x600 then a downscale back to 640x480).

There are some threads discussing this setup on videokarma.


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