extension ExtPose

SmartVideo For YouTube™

CRX id


Description from extension meta

YouTube Optimizer/Enhance. Provides 'Smart Buffer' for slow connections; auto loop; buffer preferences; quality selection; and more

Image from store SmartVideo For YouTube™
Description from store SmartVideo provides better control over YouTube buffering, quality and playing options. Features: 1. Works with all embedded/HTML5 YouTube videos. Be it a Facebook news feed video or a video directly from YouTube site. 2. With global preferences, all YouTube videos can be set to start on your wish. - As soon as the page loads - When the video is buffered completely, or whatever buffer percentage you choose. - Let SmartVideo decide when it's good to start playing. SmartVideo's 'smart buffer' decides the buffer percentage based on your current download speed. - Or just make the YouTube videos to start buffering when the page loads. You can play the video whenever you wish. 3. Along with above buffer strategies, you can opt not to initialize video until you click on it. 4. The buffer strategy can be set for individual YouTube player or as the Global preferences. Just hover your mouse over any YouTube video. 5. Calculates time left before the video starts playing. (Hover the mouse over the YouTube video) 6. Once a video is buffered as desired, notifications (sound and/or desktop notification) can be raised instead of playing the video. 7. SmartVideo can default the video quality or size based on your preference. 8. 'Loop' option on all YouTube videos. 9. Separate preferences for embedded, 'on youtube.com' videos and playlists. 10. Enable/disable 'switching to HD on fullscreen' option. Contact me at: [email protected] or [email protected] All kinds of feedback are welcome. :) Change log (v 0.9927): 1. Fixed issue related to video buffering when paused. Now, it will not break 3D videos. 2. Bugs introduced due to YouTube changes. 3. Now disabling the extension on YouTube editor page. 4. Added donate link on popups. Please donate :). Change log (v 0.9927): 1. Fixed issue related to video buffering when paused. 2. Changed color of donate button. Please donate :). Change log (v 0.9926): 1. Fixed issue related to setting size 2. Removed DomMutation event listener. Using observer now. Change log (v 0.9925): 1. Fixed issue related to YouTube API changes which was causing videos not to buffer. 2. Some other bug fixes Change log (v 0.9924): 1. Fixed issue related to setting up player size. Change log (v 0.9923): 1. Fixed page action issue for loop button. Change log (v 0.9922): 1. Fixed issues related to playlists not moving ahead. 2. HTML5 video quality selection is supported. (Still experimental!) 3. Support for new YouTube UI 4. And as usual bug fixes. Change log (v 0.9921): 1. YouTube changed the video urls. Fixed that. 2. Changed manifest version to 2. 3. HTML Notifications are not supported by chrome anymore. Going back to simple notifications. Change log (v 0.992): (Don't want v1 till HTML5 quality is controlled :) ) 1. Fixed issue with enforcing that videos are loaded even when they are paused. 2. Provided feature to enforce video buffering for embedded videos. Change log (v 0.991): (Don't want v1 till HTML5 quality is controlled :) ) 1. Fixed issues with defaulting qualities. 2. If not needed, avoiding the setting of wmode property on embed. Change log (v 0.99): 1. Fixed the issue with selecting "small" quality. Change log (v 0.98): 1. Fixed the issue where smart buffering was not started when quality is selected.</li> 2. Added better logging. Logging can be enabled if some error is encountered. This would help in better debugging. Change log (v 0.97): 1. Fixed issue with loading of the SmartVideo. 2. Added a new option to force buffer videos on YouTube even when the video is paused. This feature is currently not available for embeded videos. Work in progress on that. On embeded videos if the buffering is stalled, the SmartBuffer will assume that the desired buffering is finished and start the video. 3. Added a new option to turn of annotations. 4. Clicking on desktop notification will take you to the tab where the video is loaded. 5. Now desktop notification also has "preferences" button. 6. Minor bug fixes. Change log (v 0.96): 1. Correcting default preference for playlist overrides. Change log (v 0.95): 1. Support for player resize preference. 2. Bug fixes. Change log (v 0.94): 1. Added support for HTML5 videos (finally :) ). 2. Support for iframe embedded videos. 3. Added a new buffer strategy to stop video initialization unless user clicks on the video. Change log (v 0.93): 1. Localization support. 2. UI for the popup changed. 3. Bug fix. Thanks to Gabriel and many others for providing info on issues and helping me debug it. Note: Quality selection is not available for HTML5 videos. Disclaimer: YouTube is a trademark of Google Inc. Use of this trademark is subject to Google Permissions. This extension is not associated with YouTube or Google Inc in any way.

Latest reviews

  • (2022-09-22) Robert Gould: Doesn't buffer videos.
  • (2022-09-21) TViktor94: Does not work
  • (2022-08-28) Maarten Vink: Does not work at all
  • (2022-06-20) Renato Urbano: Please Update the Add-on because is not working anymore.
  • (2022-05-31) JeffOfBread: Works just fine for what I wanted (adjusting YT buffer). Cant speak to its other functions but did exactly what I needed with rather simple UI and configuration.
  • (2022-05-19) Jackson Dwyer: I really wanted this to work. Buffer the entire youtube video to stop waiting as much when my internet speeds dip tempoarily but unfortunatly this extension has been outdated and no longer works, I am definatly willing to give it a go again some day soon!
  • (2022-04-23) Tripple-A: Doesn't work at all.
  • (2022-03-03) Naga: It didn't work in my environment.
  • (2022-01-24) Hugo Fiermein: doesnt work
  • (2021-12-29) Yinka Oyesiku: December 2021 - does not work at all. The extension cannot override Youtubes built in buffering settings.
  • (2021-12-17) Improved Tube: hi guys! NOT UPDATED since 2014! - try Improvedtube.com tho ( ​https://github.com/code4charity/YouTube-Extension/blob/master/README.md ). , it is the only big Youtube extension developed openly and since several years and Recommended By Firefox. (the alternatives resigned along the way, because it requires continuous updates) 🎑 🎑 🎑 🎑 🎑
  • (2021-12-12) Bryce Pirie: until just a few days ago this extension was working just fine, but youtube had an update that has rendered this extension incompatible for now. - when you use it, the video disappears after reloading the page. please update this extension to make it work again. - until then, i'll just have it turned off as to not break the internet.
  • (2021-12-07) Alister Beechey: doesn't work
  • (2021-11-30) Scott Lee: I neither like nor hate this extension. It is abandoned. It hasn't been updated since 2014. DO NOT expect this to work. That is all.
  • (2021-10-25) 강진형: 과도하게 버퍼가 채워지지 않게 조절하는 옵션이 있었으면 좋겠습니다. 가령 버퍼를 몇 초 정도만 채우고 더 이상 채워지지 않게 하는 옵션 같은 거 말입니다. 즉, 무슨 영상인지 잠깐만 보고 닫으려고 하는데, 버퍼를 너무 채워버려서 버려지는 데이터가 너무 많아요.
  • (2021-09-21) Philip Mangione: Useless at least for now
  • (2021-07-10) ENDTASK: It did nothing, None of the settings did anything.
  • (2021-06-15) 2 bitch: didn't work
  • (2021-06-13) Дима: не буферизирует , не работает
  • (2021-04-28) Sammy Squib: This is the third extension I've tried in order to force YouTube to buffer the entire video instead of just 30 seconds worth, and sadly, just like the other two this one doesn't work either. Given how long its been since an update I suppose that's not surprising. Considering how difficult its proving trying to find a solution I can only assume that YouTube is now purposely preventing such tools for working. Very frustrating since they are trying to fix a flaw that's been in the service since the very beginning.
  • (2021-04-10) William Feely: Completely wrecks YouTube, the video appears but not the page elements.
  • (2021-04-05) Time to Relax & Focus: At first it worked very well to fix buffer issues on YouTube. Then YouTube started blocking the comments and playlists, etc. I assume it's YouTube because they manage to sabotage most extensions that try to alter any functionality, such as blocking autoplay is always a cat n mouse game, many more extensions effected as well. Monolpilies do this.
  • (2021-03-02) Fa R: It broke YouTube comments and all other button, it just keeps loading
  • (2021-02-04) viktor valam: не работает
  • (2021-02-03) KevinDNG: Excelente extensión funciona de maravilla porque la verdad si siento que los videos cargan mas rápido, de mi parte le doy 5 estrellas
  • (2021-01-31) Juan Brits: Broke youtube viewport, switching to different modes and commenting, trash app
  • (2021-01-09) Siavosh Aghassy: Make youtube not load properly. Ack!!!! took me forever to figure out it was this extension. Removed!
  • (2021-01-03) S K: I want a extension to work on any html5 video not only youtube.
  • (2020-11-03) adrian fernando: Extension is too outdated. It breaks youtube comments and suggested videos
  • (2020-10-31) D. Johnson: Simply doesn't do what it says it should. I think perhaps it is very old and needs removing. Player settings popup = Does not exist - No controls at all. "ensure that videos are buffered even if they are paused" - Does not work. "Do not initialise video until I click" - Does not work
  • (2020-10-27) Walter Pratt: Does not affect YT at all
  • (2020-10-25) RoboCop Police: mucho horrores a la hora de cargar y reproducir, pues se pega y hay que cerrar el explorador para que agarre.
  • (2020-09-19) Dillinger Siadak: Had the same issues as others, no 'Smart Buffer' and everything other than video was grayed out.
  • (2020-09-14) 黒津なお: まったく動作しない youtubeの読み込みを最後まで行ってくれる拡張機能として紹介されていましたが、使っても全く変わりませんでした。
  • (2020-08-31) عمرو خالد فرج: رائع جدا
  • (2020-08-28) Fortune: Useless
  • (2020-08-24) Thomas Breuer: Doesn't works. Videos weren't buffered.
  • (2020-08-22) SM Yeakub Ali: wow
  • (2020-08-02) Max Weiller: this extension is dead, It doesnt work
  • (2020-07-07) Emanuel Alexandru: I have enabled the "Ensure that videos are buffered even if they are paused" but still it didn't buffer the video, it just buffered a small portion exactly as YouTube does normally. I have enabled that option on both normal and embedded videos. I'm using Brave Browser.
  • (2020-07-04) ᴄᴇᴘᴎᴋ: Жаль не заглянул сначала в отзывы. Ничего не работает. Можете не тратить время.
  • (2020-06-30) mandar kanitkar: Doesn't work at all. It doesn't buffer youtube videos when paused. Even not buffering entire video. No effect of extension. Pretty bad that youtube removed the support for buffering full videos and buffering when paused, and not able to find any solution to it.
  • (2020-03-30) Russell: Doesn't work. YouTube won't load anything on the screen except the video. It won't buffer the entire video. Whatever this extension is supposed to do it doesn't do it.
  • (2020-02-27) Mr Niceguy: Buffer doesn't work.
  • (2020-02-16) Zainki Klik: saya tes
  • (2020-02-02) demonspding: Totally useless
  • (2020-01-24) Alan B: doesn't work, does nothing good other than breaking youtube.
  • (2020-01-23) geoffrey maroni: ne marche absolument pas toutes le video ont une erreur
  • (2020-01-10) Dmitry Komarov: Black screen if I go fullscreen on YouTube with this extension. If I go back from fullscreen YouTube interface becomes broken

Latest issues

  • (2014-03-18, v:0.9929) Lisa Muffley: Seems to have a virus
    I am trying to remove it, because it has about 1,000 letters behind the description in my extensions, and doesnt work. My system now crashes all the time, and crashes each time I try to remove it. Help!!
  • (2014-03-14, v:0.9929) RAMAN BHARDWAJ: How to uninstall this App ?
    How to uninstall this App ?
  • (2014-03-14, v:0.9929) Deth Mack: Freezing then closing browser when activated GAC
    Hi, Whenever I am using Chrome and activating GAC the screen freezes and then closes. Is there a fix for this?
  • (2014-02-28, v:0.9929) Pascal Romahn: Problem with the auto quality
    While the extension selects HD as the quality Youtube changes is back to something lower.
  • (2014-02-21, v:0.9929) 맥시: it is not working since latest chrome update 33
    it has many bugs with it recently. embedded videos show black screen with extension enabled.
  • (2014-02-21, v:0.9929) Joss S: Video going back to start by itself
    Since an update in Youtube or Chrome, the Smartvideo option to stop autoplay no longer works after the first video in a playlist is played. This might be intentional, HOWEVER, the video will jump back to the beginning after playing for a minute or so and start again.
  • (2014-02-21, v:0.9929) Joss S: Video not matching page
    Youtube has just changed (again) and now, after a page has loaded, the video will remain the same even after moving to the next video in the playlist or clicking a new video in the sidebar.
  • (2014-01-27, v:0.9929) Jovi Kamdani: 480p unavailable
    After the recent update it seems like auto quality to 480p is no longer possible/available.
  • (2014-01-26, v:0.9929) Oscar Sommerbo: Hides resolutions.
    Now the addon actually hides the highest resolutions instead of switching to them. Also breaks and video replay. I need to reload page after going to a new video. sometimes the video sound continues even after I leave a page. Playlists needs restarting ever single video.
  • (2014-01-26, v:0.9929) Nick P: not working since latest update to Chrome.
    since the latest Google chrome update this program is causing lots of playback issues hoping you get it fixed as I miss having this valuable extension


80,000 history
3.6 (3,098 votes)
Last update / version
2014-06-03 / 0.9931
Listing languages
de en