update the README file with some info

README.md

@@ -1,2 +1,121 @@
 # m3u82json
 
+This tool let's you encode a HLS m3u8 playlist into json. It support's both master and playlist types. It could handle a URL and download the playlist or read from a file or standard input.
+```
+$ ./m3u82json -h
+Usage of ./m3u82json:
+  -a	make URI absolute
+  -b string
+    	Base URL
+  -r	Recursive download master and playlists
+```
+
+Example output:
+
+```bash
+$ ./m3u82json 'https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8'
+{
+ "URL": "https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8",
+ "BaseUrl": "https://mnmedias.api.telequebec.tv/m3u8",
+ "Type": "master",
+ "Manifest": {
+  "Variants": [
+   {
+    "URI": "https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/yd/yLpoUEilVrxhhYSkpsyGMnn9t0N3AYxWmoMsM7Faw/francstireurs_entrevue_ep472_seq24.mpegts/playlist-de5cb50573ac3952cd031f64973a614828771406.m3u8",
+    "Chunklist": null,
+    "ProgramId": 1,
+    "Bandwidth": 794000,
+    "AverageBandwidth": 0,
+    "Codecs": "avc1.64001f,mp4a.40.2",
+    "Resolution": "640x360",
+    "Audio": "",
+    "Video": "",
+    "Subtitles": "",
+    "Captions": "",
+    "Name": "",
+    "Iframe": false,
+    "VideoRange": "",
+    "HDCPLevel": "",
+    "FrameRate": 0,
+    "Alternatives": null
+   },
+   {
+    "URI": "https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/pG/_eYmKLIBSVI6S27rSuF_ykGSlW0Qc8D1PALJty4Mk/francstireurs_entrevue_ep472_seq24.mpegts/playlist-3e7933be6a617888b736c1ebbb1f2a6bcda30afd.m3u8",
+    "Chunklist": null,
+    "ProgramId": 1,
+    "Bandwidth": 64000,
+    "AverageBandwidth": 0,
+    "Codecs": "",
+    "Resolution": "398x224",
+    "Audio": "",
+...
+
+```  
+
+Once you have a json, it is very easy to work with it, for example with jq:
+
+Get the Resolution and bandwidth of each rendition:
+```
+$ ./m3u82json -r 'https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8' | jq '.Manifest | .Variants[] | {Resolution: .Resolution, BW: .Bandwidth}'
+{
+  "Resolution": "640x360",
+  "BW": 794000
+}
+{
+  "Resolution": "398x224",
+  "BW": 64000
+}
+{
+  "Resolution": "416x234",
+  "BW": 209000
+}
+{
+  "Resolution": "480x270",
+  "BW": 429000
+}
+{
+  "Resolution": "768x432",
+  "BW": 1196000
+}
+{
+  "Resolution": "960x540",
+  "BW": 2096000
+}
+{
+  "Resolution": "1280x720",
+  "BW": 3096000
+}
+```
+
+Get the URL of each rendition:
+
+```
+$ ./m3u82json -r 'https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8' | jq '.Manifest | .Variants[] | .URI'
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/yd/yLpoUEilVrxhhYSkpsyGMnn9t0N3AYxWmoMsM7Faw/francstireurs_entrevue_ep472_seq24.mpegts/playlist-de5cb50573ac3952cd031f64973a614828771406.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/pG/_eYmKLIBSVI6S27rSuF_ykGSlW0Qc8D1PALJty4Mk/francstireurs_entrevue_ep472_seq24.mpegts/playlist-3e7933be6a617888b736c1ebbb1f2a6bcda30afd.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/Sf/0Yz6m4a9H2LvdJs5cXZ2OkLVBsVETi3pQR4LF-Z3k/francstireurs_entrevue_ep472_seq24.mpegts/playlist-767499b7586bfe9b892916f8a24e71928f2e509f.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/DW/tAHYcWrGU7mj9nce4TbYlou5LPRT67U7UKqD1-L2c/francstireurs_entrevue_ep472_seq24.mpegts/playlist-b08bceed9acbde9e396ff9bda6c47b0e2767ffc3.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/Eg/o_fUnlyL800wzDHxFl6hhw-8UQc-ooyDeghAFJJhc/francstireurs_entrevue_ep472_seq24.mpegts/playlist-d4a7a4f0ec6d5166035d24a010a67a11eca19cf4.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/lB/Qc25Nb0TUdQe_w_ScrBJzqxkVpsKUEm1dGtLWhM3g/francstireurs_entrevue_ep472_seq24.mpegts/playlist-10a6530ae4e350c1c757c11287d1a0f7c2fad471.m3u8"
+"https://s2.content.video.llnw.net/smedia/42f4e71183054396907c0dea18241568/Ks/l56Xl_JnkEU-hQoz9-AHS5lrBjICWHZV0dybQSN3w/francstireurs_entrevue_ep472_seq24.mpegts/playlist-933ef269e85350d026f5e55af66a76a52737ff48.m3u8"
+```
+
+Get the last chunk of the best rendition:
+
+```
+$ ./m3u82json -r -a 'https://mnmedias.api.telequebec.tv/m3u8/29880.m3u8' | jq '.Manifest | .Variants[] | select(.Resolution == "1280x720") | .Chunklist.Segments[-1]'
+{
+  "SeqId": 104,
+  "Title": "",
+  "URI": "https://mnmedias.api.telequebec.tv/m3u8/playlist104.ts",
+  "Duration": 8.313322,
+  "Limit": 0,
+  "Offset": 0,
+  "Key": null,
+  "Map": null,
+  "Discontinuity": false,
+  "SCTE": null,
+  "ProgramDateTime": "0001-01-01T00:00:00Z",
+  "Custom": null
+}
+```