Capture Cards for Retro Consoles: What Works with 240p and 480i Passthrough

Plug a Super Famicom into an Elgato HD60 S and the image turns into a combed, smeared mess. The capture card has treated a 240p signal as 480i video, applied destructive deinterlacing, and thrown away half the vertical detail. That is the central failure of consumer capture cards for retro consoles. The fix is not a different capture card. Place a dedicated upscaler between the console and the capture card. Here is exactly which capture cards fail with 240p, which scalers fix it, and what settings to change so your stream looks like the game does on a CRT.

Capture cards built for modern consoles expect an HDMI signal at 480p or higher. A 240p signal is not a standard video format. It is a 15kHz analogue mode that the card's HDMI receiver misidentifies as 480i. The result is a deinterlace that discards every other line of your 240p game and introduces combing artifacts on motion. No setting inside the capture software fixes this. The chip inside the Elgato HD60 S, the AVerMedia Live Gamer Portable 2 Plus, and the EVGA XR1 Lite simply lacks a 240p input profile.

The solution is a zero-lag upscaler that converts 240p to a standard HDMI resolution before the capture card sees it. The OSSC and the RetroTINK 5X-Pro both do this. The OSSC is a line multiplier with no framebuffer. Its added lag is measured in microseconds. The RetroTINK 5X-Pro uses a framebuffer but adds only a fraction of a frame depending on the mode. Either one turns a 240p signal into a clean 1080p or 1440p output that any capture card can handle.

The reason a capture card destroys 240p is the same reason it handles 480i badly. The deinterlacing logic is built for video, not games. A 480i video signal carries two fields that together form one frame. A 240p game signal also carries two fields, but the second field is blank. A video deinterlacer merges the two fields and sees a full frame with combing. A motion-adaptive deinterlacer, like the one in the RetroTINK 5X-Pro, detects that the second field is empty and reconstructs the progressive frame correctly.

Consumer capture cards lack motion-adaptive deinterlacing. The Elgato HD60 X and the AVerMedia Live Gamer 4K both use bob deinterlacing or a simple weave that treats 240p as 480i. Bob deinterlacing scans every other line. You lose half the vertical detail. The image looks soft, and fast horizontal scrolling shows tearing. The only capture cards that handle 240p correctly are professional units like the Magewell USB Capture HDMI Gen 2, which accept a wider range of input timings. Even those require the signal to be progressive scan at a standard resolution. A raw 240p signal from a NES or SNES is not a standard resolution.

Non-Standard HDMI Timings And The OSSC

An OSSC in the signal chain solves the 240p problem but introduces a new one: the OSSC outputs non-standard HDMI timings. In line5x mode at 320x240 input, the OSSC outputs 1600x1200. Many capture cards do not recognise this resolution and either show a black screen or refuse to lock the signal. Set the OSSC to output a standard resolution like 1080p in line4x mode. The OSSC can output 960p from a 240p source using line4x, and most capture cards accept 960p as a valid HDMI input. If your capture card still refuses the signal, add an HDMI distribution unit that re-times the output to standard HDMI spec. A powered unit from a brand like Kanex or a generic model from Golden Computer Centre in Sham Shui Po works.

Why The RetroTINK 5X-Pro Is Easier

The RetroTINK 5X-Pro avoids this entirely. It outputs standard HDMI at 1080p or 1440p. Every consumer capture card on the market accepts those resolutions. The RetroTINK 5X-Pro also supports composite and S-Video input, which the OSSC does not. If you need to capture a NES or a Nintendo 64, which output composite or S-Video only, the RetroTINK 5X-Pro is the better choice. The OSSC requires an RGB SCART or component input, so you need a separate transcoder for composite-only consoles.

When a RetroTINK 5X-Pro connects to a capture card, the card reads the EDID metadata from the scaler to determine what resolution to expect. Some capture cards, particularly the Elgato HD60 S and the AVerMedia Live Gamer Portable 2 Plus, misread the unit's EDID and report the incoming signal as 1080i instead of 1080p. The result is a captured file that is deinterlaced again, even though the scaler output a progressive signal. The RetroTINK 5X-Pro's output is clean 1080p, but the capture card records it as 1080i and re-applies deinterlacing. Combing artifacts appear a second time.

Force the RetroTINK 5X-Pro to output a specific EDID that the capture card cannot misinterpret. In the RetroTINK 5X-Pro menu, go to Output Settings and set the EDID to "1080p" or "Generic 1080p". This overrides the default EDID negotiation and tells the capture card to expect 1080p. If the capture card still reports 1080i, use an HDMI distribution unit with EDID emulation. A unit like the ViewHD 2-Port with EDID management forces the capture card to accept the signal as 1080p. The Shmups Forum capture card threads document this fix in detail. RetroRGB also covers it in the RetroTINK 5X-Pro setup guide.

The Elgato HD60 S and HD60 X are the most common capture cards on the market. Both fail with 240p. This is not a bug. The HDMI receiver chip inside these cards is designed for modern video formats. It sees a 240p signal as 480i because the timing is identical at the electrical level. The chip then applies a fixed deinterlace that discards half the lines. No firmware update fixes this. The Elgato 4K60 Pro MK.2 and the 4K60 S+ show the same behaviour.

Do not buy a different Elgato model expecting 240p support. Buy a scaler. The cheapest working solution is an OSSC, paired with an HDMI distribution unit if your capture card rejects the OSSC's non-standard output. The better solution is a RetroTINK 5X-Pro, which outputs standard HDMI and includes composite and S-Video input. If you already own an Elgato HD60 S, the scaler is the only fix. If you are buying new, skip the Elgato and get a Magewell USB Capture HDMI Gen 2, which has a wider input tolerance. Even that works best with a scaler in front of it.

HDCP Blocking And How To Strip It

HDCP can still block your signal even with a scaler in place. The RetroTINK 5X-Pro and the OSSC both pass HDCP through from the source if the source sends it. Most retro consoles do not output HDCP. If you use an HDMI mod like the UltraHDMI for Nintendo 64 or the PS1Digital for PlayStation, those mods output a clean HDMI signal without HDCP. The problem arises when a capture card requires HDCP to be absent. The Elgato HD60 S and HD60 X both accept non-HDCP signals, but some older capture cards and some HDMI distribution units re-insert HDCP metadata, causing the card to refuse the signal. Test the chain without the capture card first. If the scaler outputs a clean image to your TV, the scaler is working. Then add the capture card. If the image drops, insert a powered HDMI distribution unit that strips HDCP. The Shmups Forum recommends the ViewHD or the Sewell Ghost for this.

EDID Handshake And Chroma Locking

EDID handshake failures are the second most common problem. The capture card and the scaler negotiate resolution and colour space through the EDID metadata. If the capture card reports that it accepts only 4:2:0 chroma subsampling, the scaler may downscale its output, reducing colour detail. The RetroTINK 5X-Pro lets you lock the output to 4:4:4. This preserves full colour from RGB sources. Set this in the Output Settings menu. If the capture card then shows a black screen, the card does not support 4:4:4 at that resolution. Drop to 4:2:2. It is still better than the 4:2:0 that most cards default to.

Who Should Follow This Guide

This advice is for the Hong Kong apartment gamer with one display who needs to understand why their Super Famicom looks like a smeared mess on their 4K OLED and wants to stream or record without buying a second TV. It suits the competitive player who perceives milliseconds of input lag and needs to know which scaler and TV settings add the least delay for shmups and platformers. It suits the capture and streaming hobbyist who needs to split a signal cleanly to both a lag-free play display and a capture card without degrading either.

Who Should Skip This Guide

Skip this if you want a pre-modded console as a plug-and-play gift with no interest in settings menus. Visit a local Hong Kong retro shop and pay for a configured solution. Skip this if you are a PC gamer trying to upscale old 3D PC titles from a Windows desktop. That is a different problem with different tools. Skip this if you are a modern gamer wanting better anti-aliasing on a PlayStation 5. You need display-side motion blur and VRR guides, not scanline generators.

The One Thing That Goes Wrong Most Often

The single thing that most often goes wrong is buying a scaler and then discovering your capture card rejects its output because of an EDID handshake failure. Test the chain without the capture card first, then add the capture card. If the image drops, the fix is an HDMI distribution unit with EDID management, not a different capture card. That unit solves the problem every time.