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Must have an active converter chip (analog VGA to composite) — a simple passive cable won’t work, since VGA is analog RGB + sync, AV (composite) is single-channel video.
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Support for your desired resolutions (e.g. up to 1920×1080 @ 60 Hz)
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Audio input (if you also want to carry audio) — VGA doesn’t have audio, so converters often include a 3.5 mm audio-in jack
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Power input — many of these adapters require external power (often via USB)
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Support for NTSC / PAL output standard, selectable or auto‑detect
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Low latency / decent quality — with cheap converters you may see some artifacts or lag
