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Is there a way to play a YouTube video at half the speed (like what we can do in VLC media player?)

I'm looking for a free solution if possible.

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YouTube's video player has no native feature to change playback speed. However, there is a shareware app which lets you change the speed of videos played on online players: MySpeed!

Online video is everywhere – lectures, labs, tutorials, certification courses, seminars, news, sports and, of course, YouTube! MySpeed from Enounce lets you change the playback speed of Flash video without any loss of audio quality. (No chipmunk sound.) It’s like speed-reading for video! If your Windows PC or Mac can view videos on YouTube, MySpeed will work!

  • btw what does a chipmunk sound mean ? – Pacerier Sep 6 '11 at 14:11
  • I think it's some kind of chittering (high-pitched) sound, probably a simile for generated bad sound. – Mehper C. Palavuzlar Sep 6 '11 at 14:19
  • Remember Alvin and the Chipmunks? Watch a trailer to find out.. imdb.com/video/imdb/vi984744217 – Mohib Sheth Sep 9 '11 at 3:25
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If you use a HTML5 compatible browser, you can play videos at 1/2 or 1/4 playback speed using the YouTube HTML5 player.

You can visit http://www.youtube.com/html5 to join the beta or add &html5=1 to any video.

  • It is possible to play YouTube videos at custom speed by running this in a developer console while a web page with a YouTube video is open - document.getElementsByClassName("video-stream html5-main-video")[0].playbackRate = 3 webapps.stackexchange.com/a/78669/2356 – mvark Sep 24 '15 at 18:00
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You can speed down at half speed or speed up YouTube videos. Here's how: Speed up YouTube Playback?

  • My computer seems to hang when I hit the Play button.... – Pacerier Jan 15 '14 at 12:29
  • It worked fine for me in my old Core2Duo/Win7 laptop. I tested this with multiple videos. – sagunms Jan 15 '14 at 22:37
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AnyVideoConverter will do a direct download from YouTube for you and convert to the format of your choice. It's free and good. Obviously not a solution within the browser but I didn't read that was a requirement for you.

  • If the YouTube video has been downloaded (usually as a Flash video) then the conversion step is not necessary. It can be played in VLC Player as is (at half the speed). – Peter Mortensen Sep 9 '11 at 13:50

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