Fix for #1147, Proxy for audio URL and upgrade hls.js (#1178)

* Revert "Fix broken video playback by forcing fmp4"

This reverts commit 52db03b73a.

* Fix audio url in video m3u8

* Upgrade hls.js to 1.5.1 and use full version

src/formatters.nim

@@ -82,6 +82,8 @@ proc proxifyVideo*(manifest: string; proxy: bool): string =
   for line in manifest.splitLines:
     let url =
       if line.startsWith("#EXT-X-MAP:URI"): line[16 .. ^2]
+      elif line.startsWith("#EXT-X-MEDIA") and "URI=" in line:
+        line[line.find("URI=") + 5 .. -1 + line.find("\"", start= 5 + line.find("URI="))]
       else: line
     if url.startsWith('/'):
       let path = "https://video.twimg.com" & url