# An interactive look at how a video signal is made

**URL:** <https://forum.devtalk.com/t/an-interactive-look-at-how-a-video-signal-is-made/10421>\
**Category:** In The News\
**Tags:** signal, video, in-the-news\
**Created:** [11 June 2021 03:25 UTC](https://forum.devtalk.com/t/an-interactive-look-at-how-a-video-signal-is-made/10421 "2021-06-11T03:25:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![CommunityNews](https://forum.devtalk.com/user_avatar/forum.devtalk.com/communitynews/32/1113_2.png) [@CommunityNews](https://forum.devtalk.com/u/CommunityNews)\
**Post date:** [11 June 2021 03:25 UTC](https://forum.devtalk.com/t/an-interactive-look-at-how-a-video-signal-is-made/10421/1 "2021-06-11T03:25:32Z")

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> The image on the left is a simple static image that I was able to output as a video signal (NTSC-M). I attached an oscilloscope to the video output, and recorded an image for each line in the picture area (for my oscilloscope’s video trigger, that’s line 21 through 262). I only took screengrabs of the lines in field 1.
> 
> By moving the slider, you can look at the trace of each video line.

View here:

[https://blog.pizzabox.computer/random/videolines/](https://blog.pizzabox.computer/random/videolines/)

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