Can you insert text from a file in real time with ffmpeg streaming?

Question

I have this code i use to stream a file and place the name of the show of the video at a certain time of the video ( name_of_show ) at the top of the screen, and the bottom of t

Answer 1

Use the reload=1 and textfile options in drawtext. From the drawtext filter documentation:

reload
If set to 1, the textfile will be reloaded before each frame. Be sure to update it atomically, or it may be read partially, or even fail.

textfile
A text file containing text to be drawn. The text must be a sequence of UTF-8 encoded characters.
This parameter is mandatory if no text string is specified with the parameter text.
If both text and textfile are specified, an error occurs.

Example:

ffmpeg -i input.mp4 -vf "drawtext=texfile=mytext.txt:reload=1:fontsize=22:fontcolor=white" output.mp4

To update atomically you can use mv or equivalent:

mv temp.txt mytext.txt