About video converters - a little need here...

[jhalphen]

Hi to All,
Hi Alex KL-1,

Took me time to mull over what you are trying to achieve & understand better.

The Sony CXA1645M datasheet is interesting (Thanks!).
Apparently it encodes RGB to either standard 3.58 NTSC or 4.43 PAL.
to operate in Brazil Wikipedia describes the PAL-M subcarrier as :

"Exact colour subcarrier frequency of PAL-M is 3.575611 MHz"
from WK:
https://en.wikipedia.org/wiki/PAL#PAL-M_(Brazil)

You wrote:
"In fact, in theory I can convert the C signal from S-Video from NTSC for PAL-M"

I don't agree, the NTSC color component does not have the essential PAL alternation (swinging burst) & alternate line reversed R-Y component which is the heart of PAL.
To convert, you must decode NTSC to RGB or Y/B-Y/R-Y then re-encode in PAL system.
Only the subcarrier frequency is different between 4.43 Euro PAL & Brazil PAL-M.

We need to know more about what you want to achieve, this is what i understand:
Source #1 a computer with S-Video Composite out.

Source #2 would be what?
- Off air brazilian TV (digital). Set top box outputs what standard; NTSC or PAL?
- DVD ? standard PAL or NTSC out (i guess)

Source #3, streaming from NetFlix or other local streaming services?

Decoding to RGB 525/60 then re-encoding to PAL-M seems logical.

This appears to be a solution for your other sources:
"Interesting the VHD-180; for me, solves my problem, since I have another notebook and a PC with VGA"

About your relative with old (color?) TV: Brand/model/age
what signals can the TV receive:
- Off air PAL-M (VHF/UHF) only
- single standard PAL-M only or compatible with NTSC USA or PAL 625
- does it have an A/V input of Euro-type SCART connector?

It could work with the Sony RGB to PAL-M encoder + a RF Modulator to TV's antenna input. There are relatively cheap models which do all world standards such as the Terra MT-47, see enclosed data sheet. Full pdf manual downloadable here:

https://www.terraelectronics.com/pro...dulators/mt47/

Best Regards
jhalphen
Paris/France