Made some pictures, so it's easier to compare the different type video outputs.
I used ScreenCap SamyGo application during making these screenshots: it writes to USB the content of the frame buffer.
The app is downloadable here: https://wiki.samygo.tv/index.php5/Conte ... #ScreenCap
1. I used the NES core for testing, because this is the only one which video output is compatible with all inputs of my TV: VGA, SCART, component progressive, component interlaced, composite, and HDMI (with converter).
2. The HDMI signal was generated using a cheap Chinese 'Mini VGA to HDMI' converter, it's price was 7$ including shipping.
3. Set the parameters of every input on the TV to the same level (brightness, contrast, colour saturation etc...)
4. In case of NTSC signals over component the TV is recognizing the picture as 720x480 in progressive, and 720x240 in interlaced (scandoubler disabled) mode. PAL signals are recognized as 720x576 and 720x576i.
5. Legend for the labels: 'Komponens' means YPbPr, 'AV' is composite (yellow RCA jack), 'HDMI2' is HDMI
, '1. Külső' is SCART RGB, and 'PC' means VGA.