TVout library not working

When uploading a demo code from the TVout library, an error message comes saying cannot find
fontALL.h . What should I do ? Please help me.

Download it and include it.

I did download and included it,but it still the error message come

The necessary installation process is described here:
https://github.com/Avamander/arduino-tvout/issues/95
Don't ask me why that is only documented in an obscure issue report instead of in the readme.

Note that the repository contains two separate libraries: "TVout" and "TVoutfonts". So you can't use the Arduino IDE's Sketch > Include library > Add .ZIP library as usual to do the installation. You need to install each library separately rather than installing the downloaded .zip file.

To make matters worse they have multiple copies of the TVout library source files, one copy in the repository root, one in the TVout subfolder. And the source files are not identical because some development gets done on one file and some on the other.

Luckily it seems someone has forked the library and done some organization. You might have a better luck by giving that fork a try. That said, I haven't ever used either library, so I can't provide any recommendations based on experience.

Here are the installation instructions:

  1. Uninstall your current installation of the "TVout" library by deleting the folder {sketchbook folder}/libraries/arduino-tvout-master. The location of the sketchbook folder can be found in the Arduino IDE at File > Preferences > Sketchbook location.
    Please be very careful when deleting things on your computer. When in doubt, back up!
  2. Download https://github.com/pkendall64/arduino-tvout/archive/master.zip
  3. Select Sketch > Include library > Add .ZIP library from the Arduino IDE's menus.
  4. Select the downloaded file.
  5. Click the Open button.

I followed your instructions but it still doesn't work.

Please explain exactly what you mean by "it still doesn't work".

Got the same error here.
Just downloaded TVOut from the library manager.
When opening DemoPAL example, I got an error of "missing fontall.h"

Solution: See in your documents/Arduino/libraries/TVOut/TVoutfonts

README.md says "Copy this folder to your Arduino libraries folder"

So just copy "TVoutfonts" folder and paste it just one level up (in "libraries" folder), just aside TVout folder.
It now compiles.