update docs

README.md

@@ -12,3 +12,35 @@ Additionally, live chat recording was added which leverages irc to record.
 I don't support this code, just making public for those interested in doing it themselves.
 
 
+## Live Video + Chat Recording
+
+This logic relies on having streamlink installed on your system along with ffmpeg.
+After detecting that a stream specified in `channels_live` is live, it will first try to find a VOD id which matches to the current stream id.
+This should always happen unless the streamer has disabled their VODs.
+As a fallback then the stream ID should be used, which is a distinct number.
+
+Streamlink recording is then started with any user specified commands.
+If you have Twitch Prime, then an Oauth token can be [specified](https://streamlink.github.io/cli/plugins/twitch.html#authentication) which should remove all ads in the video stream.
+This is pretty much necessary as there is no way to remove the embedded ads via streamlink, just to remove them from the save file which breaks continuity.
+
+```json
+"streamlink_options": [
+    "--twitch-disable-hosting",
+    "--twitch-disable-reruns",
+    "--twitch-api-header=Authorization=OAuth XXXXXXXXXXXXXXXXXXXXXXX",
+    "--twitch-low-latency"
+]
+```
+
+To get the Oauth token, one can run this on the Twitch website to get its value:
+```javascript
+document.cookie.split("; ").find(item=>item.startsWith("auth-token="))?.split("=")[1]
+```
+
+To record the chat, the system connects to the IRC after streamlink has created a file and will start parsing the IRC messages into the [TwitchDownloader](https://github.com/lay295/TwitchDownloader) format.
+There is additionally support for "live chat" recording via the `channels_live_chat` config, which still requires streamlink, but will record a very small "worst quality" stream along side the chat.
+This is to reduce the file storage needed if just chat archiving alongside audio is desired.
+
+Additionally, a third thread will constantly check for title and game changes, which will be recorded into the information json file.
+The last step after a stream is finished (detected when the streamlink process exits) is to transcode the streamlink video recording so that the mp4 recorded is valid.
+This is done by just running ffmpeg over the whole video inplace to do any corrections.

twitch_live_stream.go

@@ -41,7 +41,7 @@ func main() {
 	<-waitForFirstAppAccessToken
 
 	// Ensure we have channels
-	if len(config.ChannelsLive) < 1 {
+	if len(config.ChannelsLive) < 1 && len(config.ChannelsLiveChat) < 1 {
 		log.Fatalf("CONFIG: please specify at least one chat channel to watch\n")
 	}