How to extract captions from a youtube video

There are videos on youtube that are 30min and longer. You've watched a video and later on you would like to find only a single moment that is interesting for you. With a help of subtitles and key word searching we could easily do it.

Problem

How to download and search in Google text captions file from a youtube video.

Solution

There are couple of solution that can be found on Google in the referece section. All the automatic ways didn't work for me. Below is a manual method that I used to extract the subtitles (caption) file from a Google video.

• Open a video page in Chrome browser. 
• Enable debuging and reqeuest trucking by pressing F12 in Chrome.
• Enable caption in the video. 
• Navigate into the Network tab and find the last timedtext request (the last at the bottom)
• Right click on it and open that file in a new tab; An xml file containing subtitles with the imestamps should be opened. 

References

1. http://mvark.blogspot.in/2012/06/how-to-extract-subtitles-from-youtube.html
2. http://stackoverflow.com/questions/10036796/how-to-extract-subtitles-from-youtube-videos
3. http://webapps.stackexchange.com/questions/25072/how-do-i-download-subtitles-from-a-youtube-video
4. http://www.youtube.com/watch?v=drTyNDRnyxs