{"id":5084,"date":"2020-05-19T07:06:50","date_gmt":"2020-05-18T23:06:50","guid":{"rendered":"https:\/\/people.utm.my\/hadijahjaffri\/?p=5084"},"modified":"2020-05-20T17:15:09","modified_gmt":"2020-05-20T09:15:09","slug":"covid-19-unleashed-your-creativity_part-8-what-went-wrong-with-webex-webinar","status":"publish","type":"post","link":"https:\/\/people.utm.my\/hadijahjaffri\/covid-19-unleashed-your-creativity_part-8-what-went-wrong-with-webex-webinar\/","title":{"rendered":"COVID-19: Unleashed your creativity_Part 8 (What went wrong with Webex video conference?)"},"content":{"rendered":"<p>We had a proposal defense of a PhD student yesterday.\u00a0 All went well for a while (around 30 minutes) and after that, glitches started to happen on my part.\u00a0 Even though I had permission to come to UTM and use my (uhuk uhuk unreliable) wifi in my office, but I have this urging feeling to test the speed and bandwith of my mobile modem that I bought last week.\u00a0 \u00a0It has never been tested for Webex video conference where I would be involved actively as one of the speakers since I would be one of the examiners of this proposal defense.\u00a0 So, I decided to stay at home and participated in the Webex webinar or video conference using the mobile modem. (By the way, what is the difference between a webinar and video conference? I will explore the differences later)<\/p>\n<figure id=\"attachment_5085\" aria-describedby=\"caption-attachment-5085\" style=\"width: 459px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5085\" src=\"https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-300x169.png\" alt=\"\" width=\"459\" height=\"258\" srcset=\"https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-300x169.png 300w, https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-1024x576.png 1024w, https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-768x432.png 768w, https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-1536x864.png 1536w, https:\/\/people.utm.my\/hadijahjaffri\/wp-content\/uploads\/sites\/743\/2020\/05\/Screenshot-53-2048x1152.png 2048w\" sizes=\"auto, (max-width: 459px) 100vw, 459px\" \/><\/a><figcaption id=\"caption-attachment-5085\" class=\"wp-caption-text\">At this point, I can no longer hear anything and see the screen sharing. Did I start to panic? Well, not really. I have expected such thing can happen.<\/figcaption><\/figure>\n<p>So, what make the technical glitches to happen?\u00a0 This is the question that I ask myself (still finding more information to understand the glitches better).\u00a0 I started to google information about the required bandwith and devices capabilities to ensure a smooth webinar.\u00a0 I find out there are many <a href=\"https:\/\/help.webex.com\/en-us\/WBX22158\/What-are-the-Minimum-Bandwidth-Requirements-for-Sending-and-Receiving-Video-in-Cisco-Webex-Meetings\">factors that could influence Webex video conference<\/a>.\u00a0 Here is the summary of some of the factors:<\/p>\n<ol>\n<li>For any webinar (Zoom, Webex etc.), it has <span style=\"color: #ff0000\"><strong>different requirement<\/strong> <\/span>for <strong>bandwith consumption of sending and receiving videos<\/strong>.\u00a0 Since I used Webex yesterday, what I share here is refering to <span style=\"color: #0000ff\"><strong>my experience of glitches while using Webex (so others might have different experiences)<\/strong><\/span>.\u00a0 So, I don&#8217;t know if others might experience similar things when they were using other platform like Zoom, Google Meet and such.\n<ul>\n<li>For high quality video, it requires 90-130 kbps per video participant (minus screen sharing).\u00a0 Meaning, if you have many participants in the webinar that turn on their video and\u00a0 speakers (or in unmute mode), the bandwith consumption will be higher than 130kbps.\u00a0 So, for those with weak or low bandwith, they will experience glitches like not able to hear or see the host or the screen sharing<\/li>\n<\/ul>\n<\/li>\n<li><strong>Sender-receiver traffic<\/strong> also can influence the smoothness of a webinar or video conference session.\u00a0 I am not an expert in this.\u00a0 So, I don&#8217;t know how to calculate the sender-receiver traffic to minimise glitches.\u00a0 I need to find out more about this.<\/li>\n<li><strong>Data sharing<\/strong> such as video or file sharing (Words, Powerpoint, PDF etc.) can also influence webinar session.\u00a0 \u00a0If we use screen sharing, <a href=\"https:\/\/www.cisco.com\/c\/en\/us\/products\/collateral\/conferencing\/webex-meetings\/white_paper_c11-691351.html#_Toc523258522\">Webex <\/a>webinar or video conference can require anywhere from Kbps (low-quality) to Mbps (immersive three-screen telepresence suite ).\u00a0 I got this information from <a href=\"https:\/\/searchunifiedcommunications.techtarget.com\/tip\/Business-video-conferencing-setup-Calculating-bandwidth-requirements\">here.<\/a>\u00a0 But the rule of thumb is if there are many active participants in the session who turn on video and file sharing, the higher the bandwith consumption.<\/li>\n<li><strong>Device capabilities<\/strong> refer to the device that you have in terms of the support provided by your device such as management provider, site requirements and such.\u00a0 This may be varied and influenced by the model of your devices.\u00a0 The rule of thumb in this case is the older device that you have, the less capabilities your device might have.\u00a0 <strong>In a much simpler explanation<\/strong>: <span style=\"color: #ff0000\"><strong>Not all devices<\/strong><\/span> have equal capabilities in terms of its video and such.<\/li>\n<\/ol>\n<p><span style=\"color: #ff0000\"><strong>How to minimise or rectify webinar glitches?<\/strong><\/span><\/p>\n<ul>\n<li><strong>Non-active participants<\/strong> need to <strong><span style=\"color: #ff0000\">turn off<\/span><\/strong> their video and mute their speaker.<\/li>\n<li>Limit your participant (IF you can)<\/li>\n<li>Don&#8217;t use screen sharing (at all, IF you can)\n<ul>\n<li>Participants with low bandwith may try out some of these <a href=\"https:\/\/www.webex.com\/business-continuity\/business-continuity-low-bandwidth.html\">suggestions from Webex team.<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>But all seem impossible if you want to have active and interactive session with your students, right?\u00a0 \u00a0So, what should you do?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We had a proposal defense of a PhD student yesterday.\u00a0 All went well for a while (around 30 minutes) and after that, glitches started to happen on my part.\u00a0 Even though I had permission to come to UTM and use my (uhuk uhuk unreliable) wifi in my office, but I have this urging feeling to &hellip; <a href=\"https:\/\/people.utm.my\/hadijahjaffri\/covid-19-unleashed-your-creativity_part-8-what-went-wrong-with-webex-webinar\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">COVID-19: Unleashed your creativity_Part 8 (What went wrong with Webex video conference?)<\/span><\/a><\/p>\n","protected":false},"author":851,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-5084","post","type-post","status-publish","format-standard","hentry","category-covid-19_teaching-and-learning"],"_links":{"self":[{"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/posts\/5084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/users\/851"}],"replies":[{"embeddable":true,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/comments?post=5084"}],"version-history":[{"count":7,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/posts\/5084\/revisions"}],"predecessor-version":[{"id":5106,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/posts\/5084\/revisions\/5106"}],"wp:attachment":[{"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/media?parent=5084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/categories?post=5084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/people.utm.my\/hadijahjaffri\/wp-json\/wp\/v2\/tags?post=5084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}