这个学期我在教学中有15周课程两个部分 俄克拉何马州中央大学 called, “技术教师4人”这是所有的必修课 教育学院合众 undergraduates which meets once per week, for two hours. I want to record at least one of my two repeated lectures each week, and make that video file available online for my students as a flash-based video. I also want to make it available as an iPhone-compatible video in an updated web feed。我不知道如果我能到，但我要追求也上发布我的课程视频的可能性 UCO的iTunes U专区门户。大学有一点点内容有从 9月30日创意论坛活动, but not any course videos YET. I’d love to be an early adopter and share my videos there! Perhaps that could help my chances of securing full-time employment as a professor with UCO down the road? I’m sure that would also depend on whether my course videos are actually GOOD! 🙂
Since I am my own tech support for this lecturecasting process, I need to make it as easy and streamlined as possible. It also needs to be cheap, since I’m self-funding this with my generous adjunct faculty salary. 🙂 In this post, I’ll describe some of my personal history and knowledge of lecturecasting systems, and detail how I’m using my 的MacBook Pro笔记本电脑，免费软件和网站，以及 $ 8元的一个月的帐户上blip.tv 实现上述目标，为t4t这个词。我们每周1 lecturecast现 可在我们的t4t隶博客，以及未来的情节设置从blip.tv.自动后有我们t4t昙花一现通道 t4t.blip.tv。光荣，该网站会自动检测访问者是否在使用移动浏览器一样 Safari on an iPhone or iPod Touch，将成为向上兼容 H.264 QuickTime视频观看在旅途中没有任何同步到iTunes的需要。 （WiFi或 3G 连接是最适合这种类型的移动网络流媒体的）一切为每月$ 8！我一直在使用网络广播之类的工具 Ustream 在过去的几年中，和共享演示文稿“网播在有限” at our 俄克拉何马州远程教育协会‘s conference a year ago to document some of my lessons learned to date. I considered focusing my dissertation on the use of commercial lecturecasting solutions, and still have some 与现有lecurecasting文章和资源 在个人，自托管维基我的设置与 Tikiwiki 一会儿回来。 （非常感谢 Echo360 for 大部分这些文章和研究.)
当我担任远程教育为董事 在德州理工大学教育学院 from 2001 – 2006, I was amazed to see the improvements in videoconferencing and web streaming which took place in the industry. During that time, we went from using virus-prone Windows95-based videoconferencing systems to H.323 视频会议单元接口于国家的最先进的Codian的IP VCR。我2006年6月后，“荣誉的Codian公司”提供了有关这些技术的一些额外的背景。 Codian公司已经被购买的TANDBERG和他们惊人的响应技术现已集成到 TANDBERG产品.
I think every college lecture should be recorded and made publicly available. If it’s worth sharing face-to-face, it’s worth recording. After all, 我们需要开始治疗数字存储一样丰富，右？！我们还需要记住的点进行SMU艺术学院院长 Jose Bowen: Professors and instructors MUST STOP PowerPointing students to death! He was quoted in a Chronicle of Higher Education article last year originally published with the headline, “‘Teach Naked’ Effort Strips Computers From Classrooms,” and later changed to, “当电脑离开教室，也是如此无聊.” IMHO, that was a terrible headline re-write. It should have been something like, “Dean Exhorts Faculty to Stop Technology Abuse.” It takes a good teacher with good learning strategies to evict boredom from a classroom. Boredom can be present with or without technology.
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The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.Moodle. While these commercial lecurecasting systems can be turnkey solutions, they unfortunately can require a mountain of cash to deploy institutionally.
- My MacBook Pro （不犯错误， 我做学生的倡导者上网本 在1：1个的移动学习项目，但我支持Mac笔记本电脑教师在每一个时间窗口或基于Ubuntu的替代品）。
- A M-AUDIO移动预 （到模拟音频转换为数字USB输入）
- a NADY无线领夹话筒
- 一个免费帐户 Ustream.tv
- free MPEG streamclip软件
- free camtwist软件
- 在blip.tv的$ 8 /月亲账户（t4t.blip.tv)
这是我今天跟着网上直播，并就昙花一现提供我的演讲在iPhone / iPod兼容格式的程序。
My wireless mic must be plugged into AC power, but the Mobile Pre is powered by its USB connection to the computer. After plugging these peripherals into my MacBook Pro and turning on the lapel mic, I launched Camtwist. Camtwist acts as a video source switcher, and lets you also share your desktop as a video source. I selected my webcam first as the video source.
I next launched Ustream in Safari, logged in, and clicked the BROADCAST NOW button after selecting my desired channel. I selected Camtwist as my video source, and Mobile Pre as my audio source. I approved the Ustream site to use my audio and video connections (when the flash-based prompt appeared) and when class started, clicked to start the broadcast and also start a recording.
During class I just used my webcam for the initial few minutes of the video. After that, I used Camtwist to share my desktop and kept that as my video source. When class was over, I clicked to end the recording and entered title, description and tag information into Ustream. I clicked to end the Ustream broadcast also.
在2009年时，我写的帖子6月，“下载和转换USTREAM FLV视频到DVD,” Ustream had unlinked options at the bottom of each video for WMV, MP4, and MOV versions of videos. I’m not sure what happened, but I don’t think those transcoding options have panned out. Ustream does still display the text “We are currently improving our video conversion features. Check back soon” at the bottom of videos. It is therefore possible a direct MP4 video download may become available at some point, which could render my next steps in making a local conversion unnecessary.
It is FANTASTIC Ustream provides some kind of direct download option, even if it is just FLV currently, because that is KEY for this entire process. I like many things about Livestream (a competitor of Ustream), but Livestream does NOT seem to provide ANY type of direct file download as Ustream does, even if you “go pro” and pay for an upgraded account. The download today from Ustream was very fast. The unedited video recording from my first section’s lecture is 01:16:37 (1 hour and 16 minutes) and 102 MB in FLV form from Ustream. Something went wrong with my audio recording during my second class, so I ended up using the first class’ to publish 我们t4t隶博客 as well as on 我们的第1周的课程页面.
A few weeks ago before the winter holidays, I experimented with uploading a Ustream FLV file directly to Blip.tv and found Blip won’t / can’t transcode it to M4V iPod format or mp3. A pro Blip account gives you the option to transcode uploaded files not only to Flash/flv format, but also to m4v and mp3. In order to make my lecturecasts iPhone accessible on Blip, however, I’d need to convert the file FIRST to another format and THEN upload it to blip.
有很多可用于苹果电脑的文件转换器，但我选择使用 MPEG streamclip in this case for several reasons. First of all, it’s free and cross platform. Second of all, it’s the most flexible, free video converter I know of on the Mac side which can convert FLV files. ffMPEGX 可以作为很好，但它不支持我的经验很容易的编辑喜欢的MPEG streamclip。
打开在MPEG streamclip FLV文件后，我需要做一个小修改。在课堂上，我们发现了edutopia视频“数字一代青年项目画像：卡梅伦.”
I set my lapel microphone next to the PC speakers as this video played, and that ended up being too loud for my Ustream recording. I therefore needed to edit out that video segment from a technical standpoint.
有一个法律要求对我来说，不过编辑指出，视频以及。在这一系列的影片 通过-NC-ND许可下经Creative Commons, and if I included the video in my lecturecast I’d be making an unauthorized derivative work. Fortunately, MPEG streamclip makes it a cinch to edit out video clips like this. I navigated with the playhead to the start of the EduTopia video, pushed the “i” key on my keyboard to mark an IN point, and then dragged the playhead to the end of the EduTopia portion. I pressed the “o” key to mark the out point. From the EDIT menu I chose CUT, and that was it. EduTopia video gone. This also reduced the total time of my lecturecast to 1 hour and 7 minutes.
我小的编辑完成后，在MPEG streamclip我未来选择文件 - 导出为MPEG-4。
On the next screen, where you specify the export settings, I clicked the iTunes link in the upper right corner. I selected the iPod 320 x 240 resolution option, because that was the saved resolution of my Ustream FLV file and I want iPod compatibility.
I experimented with five different export settings today, and the only two changes I ended up going with to those default iPod 320 x 240 settings were to increase the quality slider at the top to 100% and add a watermark to the video. Having the video quality set lower, even down to 50%, didn’t seem to affect the file size much. If I can get better quality with a similar filesize, I figured it was better to go with 100%. I added the watermark for www.powerfulingredients.com by clicking ADJUSTMENTS and then entering that URL. You can’t change the placement of the watermark, apparently, but I think it’s GREAT you can add one at all. It makes 最终视频 看起来更专业，我想，并提供了一些良好的能见度/营销我 对于混合式学习写作项目强大的成分 with 卡伦·蒙哥马利.
It took just over five minutes to export this final MP4 video. After that export was complete, and I was in a location with high-speed wifi, I uploaded the file to my 亲blip.tv帐户 using the provided browser-based uploader. I added a title, description, and tags, and uploaded a custom episode logo/badge for the date and week of the course too. I modified 在t4t当然徽章 我最近创建 Seashore and a 从2008年masscue照片.
Let the $每月8 lecturecasts continue! 🙂