Showing posts with label video. Show all posts
Showing posts with label video. Show all posts

Tuesday, December 22, 2009

Machine generated captions for BSD conference videos

One of the most frequent requests I've received, since Launching the BSD Conferences YouTube channel last year, has been for captions in Spanish, Russian, Chinese, and other languages. I was excited last month when Google announced automatic captions for Youtube videos using machine translation. This feature is still highly experimental but I am happy to report that it has been enabled for the BSD Conferences channel. In combination with the much more mature automatic translation feature, this means that captions are now available in over 50 languages from Afrikaans to Vietnamese for most of the 73 videos in the BSD Conferences channel.

The automatic captions are still highly experimental and the quality of transcription for highly technical content spoken by a diverse set of international speakers is a significant challenge to get right. If you are interested in helping to correct any of the English transcripts I would be happy to provide you a simple text file of the transcription, with each line offering the start and end time for the caption to be displayed, and the caption text. One advantage of the machine translation is that the most time consuming part of manually creating captions, synchronizing the timing of the text with the speech, has been done automatically. Even when the technical words are mangled, the timing information in the automatic captions files can be leveraged to make the process of manually improving the captioning much easier.

The experimental automatic captions are only available directly from the video watch pages, and not from channel pages or other views. For example, visit www.youtube.com/watch?v=nwbqBdghh6E to see one of our most popular videos, Kirk McKusick speaking on FreeBSD Kernel Internals. Hover over the triangle at the bottom right of the video, then over the CC submenu and select "Transcribe Audio". You can then choose to "Translate Captions" into a different language as well.

Tuesday, April 21, 2009

50th BSD Video Posted: All DCBSDCon '09 Videos Live

Jason Dixon has made available the last 4 videos from DCBSDCon 2009. The last video marks the 50th video uploaded to the BSDConferences YouTube channel. This channel was created less than 5 months ago and now has 924 subscribers from authenticated YouTube users, and the videos have been viewed over 76,000 times by users from around the world (includes partial views).

The newest 4 videos are :


The average number of daily views is around 500, with significant spikes above 1,500 in the days after a popular new video is announced:
And the top 10 videos sorted by views (biased towards older videos that have been available longer) are :

Sunday, April 19, 2009

Videos from DCBSDCon Posted

Thanks to Jason Dixon and Will Backman, the first 8 videos from the first DCBSDCon are now available in the BSDConferences YouTube channel. The audio quality for these is better than many of the previous conference videos because Jason was able to sync the audio with a direct recording from the podium taken by Will. These videos were also made with pure open source tools such as avidemux, mplayer/mencoder and audacity. More information will be coming soon to the VideoProductionAndPublishing wiki.

In the mean time, enjoy these technical presentations from DCBSDCon 2009:



Sunday, March 22, 2009

All Videos from AsiaBSDCon 2008 Posted

Thanks to Hiroki Sato, we have finished uploading all remaining videos from last year's AsiaBSDCon conference. The new videos are especially appreciated because they include some NetBSD and OpenBSD videos which have previously been under represented in the bsdconferences channel and it is nice to encourage cross-fertilization of ideas (including to more general open source conferences).


These videos are in addition to the 6 other FreeBSD videos already posted from AsiaBSDCon 2008 as announced here and here.

Friday, February 27, 2009

Videos from AsiaBSDCon 2008

Thanks to Hiroki Sato we have a number of interesting FreeBSD videos available now from AsiaBSDCon 2008.




Additional videos from this and other conferences are on the way. I realize it was nearly a year ago but we are just now starting to improve our processes for recording and publishing lectures at BSD conferences and should be much more timely in the future.

Tuesday, January 13, 2009

FreeBSD Kernel Internals Lecture Posted

The first lecture from Kirk McKusick's full length FreeBSD Kernel Internals course has been posted to the BSD Conferences channel on YouTube. It's been about 10 years since I first took a shortened version of this course at FreeBSDCon 1999, and only a few years since I took the follow up kernel code reading course in Berkeley, and I highly recommend this unique resource to others.



This makes the 24th video uploaded to the BSD Conferences channel since I created it just over a month ago. Thanks to Julian Elisher, Jason Dixon, Tomasz Dudzisz, and Kirk McKusick for uploading the conference videos and for contributing to our growing page of tips about video production and publishing on the FreeBSD Wiki.

As of this writing we have 644 unique subscribers to the channel and approximately 400 daily views of these videos. To date the most popular videos have been Kris Kennaway speaking about the New features in FreeBSD 7 at MeetBSD 2007, and Jason Dixon's tongue-in-cheek BSD is Dying talk at NYCBSDCon 2006. Note to conference organizers: high level talks about the new features, or talks by speakers as entertaining as Jason Dixon are likely to be well received. The YouTube analytics to the right show the top 10 most popular videos from the channel as well as some demographic information.