diff --git a/.github/readme.md b/.github/readme.md
index 20e718c..4976e43 100644
--- a/.github/readme.md
+++ b/.github/readme.md
@@ -10,22 +10,24 @@ Create and _convert_ chapters for podcasts, youtube, matroska, mkvmerge/nero/vor
 
 ## Supported Formats
 
-- `chaptersjson` podcasting 2.0 chapters json file ([spec](https://github.com/Podcastindex-org/podcast-namespace/blob/main/chapters/jsonChapters.md)) 
-- `ffmpegdata` ffmpeg metadata format ([spec](https://ffmpeg.org/ffmpeg-formats.html#Metadata-1))
-- `matroskaxml` matroska XML format ([spec](https://www.matroska.org/technical/chapters.html))
-- `mkvmergexml` MKVToolNix mkvmerge XML format ([spec](https://mkvtoolnix.download/doc/mkvmerge.html#mkvmerge.chapters))
-- `mkvmergesimple` MKVToolNix mkvmerge "simple" format ([spec](https://mkvtoolnix.download/doc/mkvmerge.html#mkvmerge.chapters))
-- `webvtt` WebVTT chapter format ([spec](https://developer.mozilla.org/en-US/docs/Web/API/WebVTT_API))
-- `youtube` Youtube description chapter notation
-- `ffmpeginfo` (readonly) ffmpeg scene detection output, used internally
-- `pyscenedetect` PySceneDetect list-scenes CSV Format ([project home](https://github.com/Breakthrough/PySceneDetect))
-- `vorbiscomment` [Vorbis Comment](https://wiki.xiph.org/Chapter_Extension#:~:text=two%20sequential%20chapters%3A-,CHAPTER001,-%3D00%3A00%3A00.0009) format that is slightly different from mkvmergesimple
-- `applechapters` [mythical chapter format](https://github.com/rigaya/NVEnc/blob/master/NVEncC_Options.en.md#--chapter-string:~:text=CHAPTER03NAME%3Dchapter%2D3-,apple%20format,-(should%20be%20in)) of unclear origin/spec or purpose
-- `edl` Edit Decision List, compatible with [shutter encoder](https://www.shutterencoder.com/en/), unclear actual spec
-- `podlove simple chapters` [xml](https://podlove.org/simple-chapters/) and [json](https://github.com/podlove/chapters#:~:text=org/%3E-,Encode%20to%20JSON,-iex%3E%20Chapters) format
-- `mp4chaps` [mp4chaps](https://github.com/podlove/chapters#:~:text=%3Achapters%3E-,Encode%20to%20mp4chaps,-iex%3E%20Chapters) format - actual spec unknown
-- `applehls` [Apple HLS Chapter](https://developer.apple.com/documentation/http-live-streaming/providing-javascript-object-notation-json-chapters) format - partial support
-
+| name | key | ext | info |
+|-------|------|----------|------|
+| Podcasting 2.0 Chapters | chaptersjson | `json`  | [spec](https://github.com/Podcastindex-org/podcast-namespace/blob/main/chapters/jsonChapters.md) |
+| FFMetadata | ffmpegdata | `txt` | [spec](https://ffmpeg.org/ffmpeg-formats.html#Metadata-1) |
+| Matroska XML chapters | matroskaxml | `xml` | [spec](https://www.matroska.org/technical/chapters.html) |
+| MKVToolNix mkvmerge XML | mkvmergexml | `xml` | [spec](https://mkvtoolnix.download/doc/mkvmerge.html#mkvmerge.chapters) |
+| MKVToolNix mkvmerge _simple_ | mkvmergesimple | `txt` | [spec](https://mkvtoolnix.download/doc/mkvmerge.html#mkvmerge.chapters) |
+| WebVTT Chapters | webvtt | `vtt` | [spec](https://developer.mozilla.org/en-US/docs/Web/API/WebVTT_API) |
+| Youtube Chapter Syntax | youtube | `txt` |  |
+| FFMpegInfo | ffmpeginfo | `txt` | read only, used internally |
+| PySceneDetect | pyscenedetect | `csv` | [project home](https://github.com/Breakthrough/PySceneDetect) |
+| Vorbis Comment Format | vorbiscomment | `txt` | [spec](https://wiki.xiph.org/Chapter_Extension) |
+| "Apple Chapters" | applechapters | `xml` | [source](https://github.com/rigaya/NVEnc/blob/master/NVEncC_Options.en.md#--chapter-string:~:text=CHAPTER03NAME%3Dchapter%2D3-,apple%20format,-(should%20be%20in)) |
+| Shutter EDL | edl | `edl` | [source](https://github.com/paulpacifico/shutter-encoder/blob/f3d6bb6dfcd629861a0b0a50113bf4b062e1ba17/src/application/SceneDetection.java) |
+| Podlove Simple Chapters | psc | `xml` | [spec](https://podlove.org/simple-chapters/) |
+| Podlove Simple Chapters JSON | podlovejson | `json` | [source](https://github.com/podlove/chapters#:~:text=org/%3E-,Encode%20to%20JSON,-iex%3E%20Chapters) |
+| MP4Chaps | mp4chaps | `txt` | [source](https://github.com/podlove/chapters#:~:text=%3Achapters%3E-,Encode%20to%20mp4chaps,-iex%3E%20Chapters) |
+| Apple HLS Chapters | applehls | `json` | [spec](https://developer.apple.com/documentation/http-live-streaming/providing-javascript-object-notation-json-chapters), partial support |
 
 ## CLI 
 
diff --git a/faq.md b/faq.md
index eec39c4..f58c9ee 100644
--- a/faq.md
+++ b/faq.md
@@ -82,5 +82,18 @@ be 00:00.
 ## How to use the apple chapters?
 I honestly don't know as the only reference I could find is [NVEnc's documentation](https://github.com/rigaya/NVEnc/blob/master/NVEncC_Options.en.md#--chapter-string:~:text=apple%20format%20(should%20be%20in%20utf%2D8))
 
+## Which EDL format is used?
+I used the EDL format that is yielded by [shutter encoder](https://www.shutterencoder.com/en/). I hope the format is compatible with other software, but I haven't tested it.
+
+## How to use the podlove simple chapters?
+The podlove simple chapters are used in the podlove web player. The format is described in the [podlove documentation](https://podlove.org/simple-chapters/).
+
+## How to use the apple hls chapters?
+I have no idea. Also the format is only partially supported as it has more features than `chaptersjson` (which is the internal format used by chaptertool) can express.
+
+## How to use the mp4chaps chapters?
+No clue, hopefully you can figure it out.
+
+
 ## What does "chapter/timeline lock" do?
 When enabled, clicking anywhere on the timeline will select the chapter below. When disabled you can click on the timeline without the chapter below being selected and scrolled into view.
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