add a source option to disable realtime streaming (closes #38)

Author: Sam Stenvall

Diff for: README.md

@@ -47,6 +47,8 @@ The file contains an array of JSON objects with the following definition:
 * `source`: the source URL
 * `avconvOptions`: (optional) special avconv parameters for this source. This is an object containing two arrays, 
 `input`and `output`.
+* `realtime`: (optional) whether to add the `-re` input flag to the input options. Normally this is what you want, but 
+some sources may not work correctly without disabling this. Defaults to `true`. 
 * `prescript`: (optional) script to run before transcoding starts. Useful if you need to bring up temporary VPN 
 interfaces etc. Four arguments are passed to the script; the source URL, the relative stream URL, the provider name 
 and the channel name.

Diff for: libs/options.js

@@ -14,9 +14,14 @@ var getAvconvOptions = function(source) {
  * @returns array
  */
 var getInputAvconvOptions = function(source) {
-	var options = [
-		'-re'
-	];
+	var options = [];
+
+	// Optionally disable realtime streaming
+	if (source.realtime !== false) {
+		options = [
+			'-re'
+		];
+	}
 
 	if (source.avconvOptions !== undefined && source.avconvOptions.input !== undefined)
 		options = options.concat(source.avconvOptions.input);