php - Generate thumbnail for text file

Question

Suppose a user uploads a .txt or .php file, and I want to generate a .png thumbnail for it. Is there a simple way of doing it, that doesn't require me to open the file and write its contents into a new .png? I have ImageMagick and FFmpeg available, there must be a way to take advantage of that, but I've been looking a lot and no luck yet.

Thanks in advance.

Answer 1

You can use ffmpeg:

 ffmpeg -video_size 640x480 -chars_per_frame 60000 -i in.txt -frames:v 1 out.png

However, it has some caveats:

• By default it renders 6000 characters per frame, so it may not draw all of your text. You can change this with the -chars_per_frame and/or -framerate input options. Default frame rate is 25.

• The text will not be automatically word wrapped so you will have to add line breaks for the text to fit your output video size.