From 261153a40329ceecd671c83262d1d0f887d0dcf9 Mon Sep 17 00:00:00 2001
From: Sorrow446 <47045733+Sorrow446@users.noreply.github.com>
Date: Tue, 14 Jun 2022 03:08:41 +0100
Subject: [PATCH] Update README.md

---
 README.md | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 55 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index bb9216b..d1844bf 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,10 @@
 # go-mp4tag
-MP4 tagger written in Go.
+MP4 tagging library & CLI tagger written in Go.    
+[Windows, Linux, macOS and Android binaries](https://github.com/Sorrow446/go-mp4tag/releases)
 
-## Setup
+
+## Library
+### Setup
 ```
 go get github.com/Sorrow446/go-mp4tag
 ```
@@ -9,7 +12,7 @@ go get github.com/Sorrow446/go-mp4tag
 import "github.com/Sorrow446/go-mp4tag"
 ```
 
-## Usage Examples
+### Usage Examples
 ```go
 	tags := &mp4tag.Tags{
 		Album: "album",
@@ -36,7 +39,7 @@ import "github.com/Sorrow446/go-mp4tag"
 			"CUSTOMFIELD": "custom field",
 			"CUSTOMFIELD2": "custom field 2",
 		},
-		Delete: []string{"genre", "cover"},
+		Delete: []string{"cover", "genre"},
 	}
 	err := mp4tag.Write("1.m4a", tags)
 	if err != nil {
@@ -61,7 +64,7 @@ Write two custom fields named `CUSTOMFIELD` and `CUSTOMFIELD2`, delete genre tag
 ```
 Write cover from `cover.jpg`.
 
-## Misc
+### Misc
 ```go
 type Tags struct {
 	Album       string
@@ -86,6 +89,53 @@ iTunes-style metadata only.
 Delete strings: album, albumartist, artist, comment, composer, cover, disk, genre, label, title, track, year.    
 Custom tag deletion is not implemented yet.
 
+## CLI
+go-mp4 tag also has a CLI version if you'd like to call it outside of Go.
+```
+Usage: mp4tag_x64.exe [--album ALBUM] [--albumArtist ALBUMARTIST] [--artist ARTIST] [--comment COMMENT] [--composer COMPOSER] [--cover COVER] [--custom CUSTOM] [--delete DELETE] [--diskNumber DISKNUMBER] [--diskTotal DISKTOTAL] [--genre GENRE] [--label LABEL] [--title TITLE] [--trackNumber TRACKNUMBER] [--trackTotal TRACKTOTAL] [--year YEAR] FILEPATH
+
+Positional arguments:
+  FILEPATH               Path of file to write to.
+
+Options:
+  --album ALBUM          Write album tag.
+  --albumArtist ALBUMARTIST
+                         Write album artist tag.
+  --artist ARTIST        Write artist tag.
+  --comment COMMENT      Write comment tag.
+  --composer COMPOSER    Write composer tag.
+  --cover COVER          Path of cover to write. JPEG is recommended.
+  --custom CUSTOM        Write custom tags. Multiple tags with the same field name can be written.
+                         Example: "--custom MYCUSTOMFIELD1=value1 MYCUSTOMFIELD2=value2"
+  --delete DELETE, -d DELETE
+                         Tags to delete.
+                         Options: album, albumartist, artist, comment, composer, cover, disk, genre, label, title, track, year.
+                         Example: "-d album albumartist"
+  --diskNumber DISKNUMBER
+                         Write disk number tag.
+  --diskTotal DISKTOTAL
+                         Write disk total tag. Can't be written without disk number tag.
+  --genre GENRE          Write genre tag.
+  --label LABEL          Write label tag.
+  --title TITLE          Write title tag.
+  --trackNumber TRACKNUMBER
+                         Write track number tag.
+  --trackTotal TRACKTOTAL
+                         Write track total tag. Can't be written without track number tag.
+  --year YEAR            Write year tag.
+  --help, -h             display this help and exit
+  ```
+  You must use double quotes for values with spaces in.
+  
+  `mp4tag_x64.exe 1.m4a --artist artist --albumArtist "album artist"`    
+  Write artist and album artist tags.
+  
+  `mp4tag_x64.exe 1.m4a --cover cover.jpg"`    
+  Write cover from `cover.jpg`
+  
+  `mp4tag_x64.exe 1.m4a --custom "MY CUSTOM FIELD WITH SPACES"=value1 MYCUSTOMFIELD1="value with spaces" -d cover genre"`    
+  Write two custom fields named `MY CUSTOM FIELD WITH SPACES`, and `MYCUSTOMFIELD1`, delete genre tag, and remove cover.
+
 ## Thank you
  go-mp4tag relies heavily on abema's go-mp4 library.