Help

Want to know how things work? Read the FAQ below or watch the video tutorials.

What is CaptionTube?

CaptionTube is a utility for adding closed captions to YouTube videos. After you import a video, you play the video and add captions as needed. When you are done, you export the captions and then upload to YouTube.

Why is it better than watching YouTube and editing my captions in a text editor?

CaptionTube provides improved precision with a scaleable timeline. You can also make changes to captions and preview them immediately. It also allows you to create multiple language tracks.

How do I import a video for captioning?

Please refer to the following diagram:

Import Workflow

Assuming you have a YouTube account and you have uploaded at least one video A1:

  1. When you sign in for the first time, you will need to import one of your YouTube videos. Click 'Personal Video' A2.
  2. CaptionTube integrates with YouTube via the YouTube Data API. What the means for you is that you need to grant permission for this integration. Once you do this, CaptionTube will store this permission and you will only have to see the two screens detailed in A3 once.
  3. With your permission, CaptionTube presents a list of your videos A4. Select one and click Import which is below the list of videos. Note that your public and private videos will be listed. Since only you can see this list, you can caption a private video before making it public.
  4. Finally the video is imported displayed on the My Videos page 5. Click the video image or Import to begin captioning the video.

Assuming you do not own the YouTube video but would like to caption it: B1:

  1. When you sign in for the first time, you will need to import one of your YouTube videos. Click 'Specific Video' A2.
  2. A dialog will appear B3 and you can enter the URL for the video. You can get the URL on the video’s YouTube page. The dialog provides an illustration showing where to get it. Paste the URL in the text field and click Import.
  3. The video is imported displayed on the My Videos page 5. Click the video image or Import to begin captioning the video.
  4. Once you have completed captioning the video, you can send the captions to the owner. If you know the owner's email address, you can email the captions as an attachment when you export the captions.

How do I create captions with CaptionTube?

Please refer to the following diagram:

Create Workflow

  1. Press play 1 (Alt + Space).
  2. Click Add 'Caption' 2 (Alt + A). The video will continue to play but the fields are now editable.
  3. Listening to the audio, click the set end point button 3 (Ctrl + Shift + I). This will now pause the video.
  4. Type in the text for the caption 4.
  5. Click Save 5. The caption will then appear in the timeline or list this depends on whether you are creating captions in timeline or list view.

How do I edit a caption after I created one?

Click the caption you wish to edit. In Timeline view, click on one of the clips. In List view, click on a caption row in the table containing the captions.

How do I export captions?

Please refer to the following diagram:

Clicking 'Export Captions' 1 displays the Export Captions dialog. At the top of the dialog are three radio buttons that control how captions are exported.

  • The first and default option is to download the captions to your computer. 2. When you choose this option, a download link appears 3. Click the download link. For convenience, the 'Captions and Subtitles page' link 4 below links directly to the Captions upload page for the video you are captioning. You will only be able to upload the captions if you are the owner of the video. If you are not the owner, you will want to choose one of the two other options.
  • The Email captions option 5 displays an email form. You can send the captions as an attachment to yourself or to someone else. Complete the form and click 'Send Email.'
  • The last option 6 presents the text in a YouTube-compatible format. This option is helpful when you want to edit the captions in a text editor and upload the captions separately to YouTube.

Does CaptionTube create a copy of my YouTube videos?

No. The videos are still hosted on YouTube, but CaptionTube creates a bookmark to it. CaptionTube uses a player that streams the video from their original location.

Why is seeking sometimes slightly inaccurate?

Due to limitations in the way YouTube videos are encoded, seeking can be up to two seconds off. That said, we recommend seeking a few seconds before the desired location and pausing.

Are there Keyboard Shortcuts?

Yes! Refer to the following table:

CommandKeyboard CombinationMode
Toggle between Play and PauseAlt + SpaceTimeline and List views
Toggle Words per Minute HighlightingAlt + WTimeline and List views
Add a CaptionAlt + ATimeline and List views
Set caption in point to the current timeCtrl + Shift + ITimeline and List views
Set caption out point to the current timeCtrl + Shift + OTimeline and List views
Zoom InAlt + ZTimeline view
Zoom OutAlt + XTimeline view

Find a bug or want a feature?

Discuss CaptionTube on Google Groups

How is CaptionTube powered?

CaptionTube is powered by the following: Google App Engine, App Engine Patch, YouTube Data API, Python, Django, and jQuery.

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