FFMPEG - can you have comments in script files?

Question

Because of batch's poor ability to handle multi-line strings, I'm using FFMPEG script files more and more for filter_complex arguments. I'm wondering if there is any way to include comments in these files. They seem to be quite tolerant of white space and line breaks. I've tried:

#
#   comment
#

and

;
;   comment
;

and

`
`   comment
`

and

'
'   comment
'

with no success. It doesn't look as if comments are officially supported, but I'm wondering of there is some syntax quirk that allows them?

*** CLARIFICATION ***

I'm not talking about comments in batch files here, but comments in filter_complex_script files. FFMPEG supports specifying the filter_complex argument string in a separate file. So instead of:

ffmpeg -i "input.mp4" -filter_complex "[0:v] crop=w=100:h=100:x=12:y=34 " "output.mp4"

you can specify:

ffmpeg -i "input.mp4" -filter_complex_script "crop.txt" "output.mp4"

where crop.txt contains

[0:v] crop=w=100:h=100:x=12:y=34

This is really handy when the filter_complex string gets more complicated (I routinely deal with arguments 10,000 characters in length).

Answer 1

You can use drawtext with an Y out of the image :-D

...
rotate=(t/4),

drawtext=text='This is a comment. OMG I am so smart!':y=1000,

crop=500:500:100:100,
...