Question

I have an asp.net website where i need users to upload videos to a certain channel on youtube.

uploading the videos can be done either by uploading a video from their pc’s or by recording a video directly via the webcam and then upload it also to the same channel.

Answer 1

https://developers.google.com/youtube/youtube_upload_widget

It looks like they have a widget:

<!-- 1. The 'widget' div element will contain the upload widget.
     The 'player' div element will contain the player IFrame. -->
<div id="widget"></div>
<div id="player"></div>

<script>
  // 2. Asynchronously load the Upload Widget and Player API code.
  var tag = document.createElement('script');
  tag.src = "//www.youtube.com/iframe_api";
  var firstScriptTag = document.getElementsByTagName('script')[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

  // 3. Define global variables for the widget and the player.
  //    The function loads the widget after the JavaScript code
  //    has downloaded and defines event handlers for callback
  //    notifications related to the widget.
  var widget;
  var player;
  function onYouTubeIframeAPIReady() {
    widget = new YT.UploadWidget('widget', {
      width: 500,
      events: {
        'onUploadSuccess': onUploadSuccess,
        'onProcessingComplete': onProcessingComplete
      }
    });
  }

  // 4. This function is called when a video has been successfully uploaded.
  function onUploadSuccess(event) {
    alert('Video ID ' + event.data.videoId + ' was uploaded and is currently being processed.');
  }

  // 5. This function is called when a video has been successfully
  //    processed.
  function onProcessingComplete(event) {
    player = new YT.Player('player', {
      height: 390,
      width: 640,
      videoId: event.data.videoId,
      events: {}
    });
  }
</script>