Allow disabling Wallclock Timestamps with conf.json parameter

- add `"wallClockTimestampAsDefault":false` to disable it.

conf.sample.json

@@ -2,6 +2,7 @@
   "port": 8080,
   "passwordType": "sha256",
   "detectorMergePamRegionTriggers": true,
+  "wallClockTimestampAsDefault": true,
   "addStorage": [
       {"name":"second","path":"__DIR__/videos2"}
   ],

libs/config.js

@@ -40,6 +40,7 @@ module.exports = function(s){
     if(config.insertOrphans === undefined){config.insertOrphans = true}
     if(config.orphanedVideoCheckMax === undefined){config.orphanedVideoCheckMax = 2}
     if(config.detectorMergePamRegionTriggers === undefined){config.detectorMergePamRegionTriggers = false}
+    if(config.wallClockTimestampAsDefault === undefined){config.wallClockTimestampAsDefault = true}
     //Child Nodes
     if(config.childNodes === undefined)config.childNodes = {};
         //enabled

libs/ffmpeg.js

@@ -422,7 +422,7 @@ module.exports = function(s,config,lang,onFinish){
         x.hwaccel = ''
         x.cust_input = ''
         //wallclock fix for strangely long, single frame videos
-        if(e.type === 'h264' && x.cust_input.indexOf('-use_wallclock_as_timestamps 1') === -1){x.cust_input+=' -use_wallclock_as_timestamps 1';}
+        if(config.wallClockTimestampAsDefault && e.type === 'h264' && x.cust_input.indexOf('-use_wallclock_as_timestamps 1') === -1){x.cust_input+=' -use_wallclock_as_timestamps 1';}
         //input - frame rate (capture rate)
         if(e.details.sfps && e.details.sfps!==''){x.input_fps=' -r '+e.details.sfps}else{x.input_fps=''}
         //input - analyze duration

web/libs/js/super.configEditor.js

@@ -231,6 +231,10 @@ $(document).ready(function(){
           "type": "boolean",
           "default": false
         },
+        "wallClockTimestampAsDefault": {
+          "type": "boolean",
+          "default": true
+        },
         "defaultMjpeg": {
           "type": "string",
         },