A few days ago, I posted a video about adding closed captions to your YouTube video. I also made the claim that this will help with SEO. It made sense and I read a few blogs that implied this, too, but I was not convinced. So I did a test…
A few days ago, I posted a video about adding closed captions to your YouTube video. I also made the claim that this will help with SEO. It made sense and I read a few blogs that implied this, too, but I was not convinced. So I did a test…
I went back to one of my Subviewer files that I uploaded as a closed captioning file onto both YouTube and Google Videos (the one I used in the Captioning and Subtitles on YouTube). I then chose a sentence which I was fairly confident that has probably never been written online:

In theory, Google would only know of this text IF it was indexing closed captioning files. I did a search on the term SEO which we call “The SEO Exciter Series.” and saw what came back…

Eureka! There, in plain English, was my transcription located in the SERP description. Google was able to identify my video exclusively by the content found within the closed caption subtitle file.
BUT, note that it only returned the Google Video, not the YouTube video. This, or course, doesn’t mean that Google is not indexing YouTube, but it tell us that the technology is there and that Google recognizes it!
Realize that once you have the video transcription formated correctly, uploading it to both Google Video and YouTube only takes approximately 1 minute. One thing I am certain about right now:
Add Closed Captions to YouTube for Traffic.
Add Closed Captions to Google Video for SEO.
cheers…matt
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My name is Matthew Bredel and as of March, 2007, I am a full-time, work-at-home internet marketer.
For close to 10 years, I worked for a defense company which was an OK job, but I was so uninspired in life and frankly, I needed some more money. That is when I first discovered internet marketing! Now I admit that I didn't start making thousands in my first couple of months (in fact, I lost my shirt!), but I finally saw the "internet light"...

Hey Matt,
It looks like your test phrase has gotten popular - your video with that phrase isn’t even on page one anymore.
Nice work on getting the word out about CC and indexing/ranking.
I’ll be posting on it this week also.
BTW, I pulled a different unique phrase from your CC file and the Google version video shows up as the only result. Nothing yet from YouTube though. Duplicate content issue perhaps?
April 20th, 2009 at 3:56 pm
[...] will index these closed-captioned files. Other references I found is a site run by Matthew Bredel. In this blog post he details how he checked the indexing issue for himself and found text that could only have been [...]
April 23rd, 2009 at 2:00 pm
Hey Roger…One thing that I do with the transcript is also syndicate that, too, now. That is why there is more results for it.
As for the YouTube/Google Video thing…I don’t think that the YouTube Closed Captioning is being indexed…only the Google Video (I’m sure that will change in the future). Still, the formats are the same so I might as well put it in YouTube for the conversion and traffic and Google Video for the SEO. It only takes a few seconds to add.
cheers…matt
May 5th, 2009 at 7:48 am
This is a great article. Too bad Google Video stopped allowing video uploads, but we can go back and add captions to our existing videos. It can’t be long before YouTube captions are indexed. There will probably be a showdown between user uploaded captions and gaudi generated captions down the road.
May 12th, 2009 at 4:01 pm
[...] ADDED BONUS: Captioning adds to your google search ranking! [...]
July 1st, 2009 at 7:25 pm