Video Signals & Cables: Summary

This is the summary of the previous five articles looking at the different video signals and connectors commonly used in Home AV. Previously we have discussed  Composite video, S-video, RGB video, Component video and HDMI.

So which cables, plugs and sockets should you use? It depends on what outputs your other devices have. Below is the basic hierarchy for cables and connectors when connecting devices to your flat screen TV or projector


1st ChoiceHDMIBest quality digital picture and digital audio in one cable
If no HDMIComponent Video + AudioBest quality analogue picture, plus analogue audio – requires five cables. Normally you would have all five cables joined into one, or use a 3 core red, green blue for the video and a separate red and white RCA (phono) cable for audio
If no Component VideoS-Video + AudioNot as good as Component Video but better than composite video, not available on all flat screen TVs. Also requires a RCA (phono) lead for the analogue audio
If no S-VideoComposite video + AudioThe most basic video connection, being phased out on newer equipment. Uses the common yellow, red and white connections. Use the yellow cables for composite video and the red and white cables for analogue audio

This is what I call the hierarchy table of video signal cable.

The best quality, and the simplest connection is HDMI. If you can connect all your devices using HDMI, then you probably don’t need to worry about all the other connections. It is also the simplest as it has the video and audio all in one cable.

The next best quality is to use Component video. You need three cables for the video (red, blue and green) and two for the audio (red and white). Simply connect the green socket from the DVD player to the green socket on the flat screen TV. Do likewise for the blue and red connectors. Then use the red and white audio connectors to connect the audio.

After HDMI and Component video, the next best video connection is S-video. It is not always available, but if it is available, it gives better quality video than Composite video. It may also be difficult to find a S-video cable, but it is worth it if you can. You also need to connect the red and white for the audio.

Finally, if no other connections are able to be used, you can use the basic Composite video. This is most common when connecting a VCR to your flat screen TV. This uses the yellow connection for the video, and the read and white connections for the audio.

All the above cables will work. However I suggest it is simpler (and you get better quality) to follow the above table when connecting your equipment.

If you need to purchase cables, here is a link to Amazon’s range of Audio and Video Cables.

In other articles we will use the hierarchy table of video signal cable as a reference when looking at connecting your AV equipment.

Please Note: During the Covid-19 pandemic I'm busy with a number of streaming projects, and have very limited time to attend to this website. I'm currently taking up to a week to answer questions. Sorry for any inconvenience.

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Hi Geoff I have the following equipment. Loewe Xelos 5270 full digital 100 TV set (vintage 1990’s) Arcam Movie Solo 2.1 – DVD/CD + Amp Topfield 2460 PVR When the old panasonic PVR gave out, I bought a Topfield and the re-connections done at that time have always been poor – e.g. composite to TV via a SCART adapter. The connectors on each item of equipment are pretty mismatched to each other. Loewe has 2 x SCART: AV1, AV2/RGB, an S Video in and composite video in, audio in/out. Arcam has Composite, component, HDMI, digital audio, all in/out. [sound to… Read more »

Hi Geoff I have just purchased a ROKU 1 STREAMING DEVICE as I understood it work with older TV’s. I have a Panasonic Viera 39 inch Plasma TV which is 10 years old but stills looks very up to date. It has no HDMI PORT. The ROKU comes with an HDMI port and composite red white and yellow cable. On the back of my tv there are no composite red yellow and white ports but there are two ports a red and a white labelled av audio ports and next to three ports which are green blue and red. The… Read more »