Adding subtitles to YouTube videos using CaptionTube

YouTube is a wonderful resource, it works on just about all internet enabled devices, it hardly ever goes wrong, it is easy to use and although there is a lot of low quality rubbish on there (in my opinion), there is also huge amounts of really useful high quality videos that we can use in education to enhance our teaching and learning practices.

A feature of YouTube that many don’t know about, is the auto-captioning option – in other words YouTube creates a transcript of the video without you having to do anything. If you are watching a video on the YouTube page and you want to see the captions, then there is a button below the video (currently to the right of the where it says ‘add to’) which is the transcript button – this brings up the transcript as a timeline below the videos and automatically advances with the video. This can be great for learners that have a disability (e.g. are deaf), but can also be really useful to find a key point within a video.

For example I often use short sections of the excellent TED talk video of Ken Robinson talking about schools killing creativity. If I want to locate a certain section within that video, I use the automatic captions that appear below it to locate the section that I want.

Because the transcripts are computer generated, they do contain errors – and depending on the clarity of the voice and the background noise of the video will determine the accuracy of the transcript. For some reason my voice never does well with automated speech to text systems, including YouTube.

However if you do want to override the automatic captions that YouTube creates with your own ones, then this is very easy to do – and for this I use a service called CaptionTube This is a simple system where you sign in (using a Google Account) you locate the video you want to caption (which could be your own or someone elses) and then you play the video pausing it at intervals to add your captions. If the video is your own, then you can add the captions to it there and then, if it isn’t your video then you can send the transcript to them to see if they want to upload it.

The following video (by John Skidgel) introduces the basics of CaptionTube.

Here is a video of mine that I captioned using this method. This took me 12 minutes in total from opening the page to my captions appearing on the video on YouTube.

Adding Captions to a video is a simple way to increase the accessibility of a resource, as well as potentially increasing the number of people that see your video, as the contents of the captions will get picked up by search engines (if the video is set to being public and listed).

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