It depends on what you are thinking of.
If for example you're talking about generating a simple video signal with an MCU, then that is fairly easy.
It requires that you know something about how an analog video signal is constructed.
To generate a simple black and white picture is easiest.
Starting with a horizontal sync pulse and then black or white levels 1Vpp. Two digital outputs is enough to achieve this with a few extra components.
Horizontal lines without any vertical sync will produce a result on any monitor. But to get the picture to lock correctly you will need to construct a full frame.
say 525 lines of non interlaced video. A black and white NTSC type frame.
You can then expand on this basic approach to generate a grey scale picture instead of a binary black and white using simple D2A techniques.
If your MCU is fast enough a direct synthesis of the colour subcarrier can be generated but by this stage is becomes easier just to farm RGB off to another chip or device to generate a baseband colour video signal.
Back in the days of Z80 I wrote some simple games for the old turret tuner TV. It didn't have a composite video in so I made a simple FET VHF oscillator which worked about ch1 and amplitude modulated it with the B&W composite signal. Sadly I was about 10 years behind pong.
I'm not sure what your getting at by suggesting an inductor can be replaced by an oscillator ?