# FFMPEG Filtergraph Generator
**URL:** https://racket.discourse.group/t/ffmpeg-filtergraph-generator/2831
**Category:** Show & Tell
**Created:** [March 24, 2024, 4:58pm UTC](https://racket.discourse.group/t/ffmpeg-filtergraph-generator/2831 "2024-03-24T16:58:51Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Antigen-11](https://racket.discourse.group/u/Antigen-11)
#### Post date: [March 24, 2024, 4:58pm UTC](https://racket.discourse.group/t/ffmpeg-filtergraph-generator/2831/1 "2024-03-24T16:58:51Z")
Hello, everyone!
I have created an tiny [ffmpeg (complex) filtergraph generator](https://github.com/Antigen-1/filtergraph-generator.git) using a s-expression representation, which implements basic checks and character escaping.
However, I find its syntax not very user-friendly, and its behaviour is currently unsafe due to a shortage of necessary checks. Also, the documentation is still in progress.
Contributions and suggestions would be appreciated!
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### Author:  [@soegaard](https://racket.discourse.group/u/soegaard)
#### Post date: [March 24, 2024, 5:46pm UTC](https://racket.discourse.group/t/ffmpeg-filtergraph-generator/2831/2 "2024-03-24T17:46:34Z")
Can you give a short description of what a they can be used for?
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### Author:  [@Antigen-11](https://racket.discourse.group/u/Antigen-11)
#### Post date: [March 25, 2024, 3:50am UTC](https://racket.discourse.group/t/ffmpeg-filtergraph-generator/2831/3 "2024-03-25T03:50:31Z")
Sure!
> Before encoding, `ffmpeg` can process raw audio and video frames using filters from the libavfilter library. Several chained filters form a filter graph. `ffmpeg` distinguishes between two types of filtergraphs: simple and complex.
This library is written according to documents listed as follows.
- [Filtergraph description](https://ffmpeg.org/ffmpeg-filters.html#Filtergraph-description)
- [Filtering](https://ffmpeg.org/ffmpeg.html#Filtering)