BoxCast's Caption feature allows you to caption your broadcasts automatically with the press of a button.
Here is how to use it to caption your broadcasts:
- Navigate to the broadcast you would like to caption and click on the Captions Tab
- Click the Generate Captions button to start automatically generating captions for that broadcast.
- Your captions will then start to be created. This usually takes about 1/2 - 3/4 the length of the broadcast (Ex. For a 1-hour broadcast, Caption generation will take 30-45 minutes). Feel free to leave the page and return later.
- Once the captions have been created, they are ready to be reviewed & edited. In general, the captions are about 90% accurate, so you should always review them before publishing. Unique words, proper nouns or difficult to pronounce words can often get strange results from the automated caption generation. Click Review and Publish Captions to edit the captions. Your captions will not be published until you have completed this step.
- Reviewing & editing captions is very straightforward. Simply click the text to change what you want it to say. Play using the player on the right, and watch as the blue line tracks through highlights the caption that is currently being played. This is the best way to review an entire broadcast. Click the Play button on each line to skip to listen to the part of the broadcast.
From our automated caption creation, we are able to understand where there was uncertainty about whether the generated words are correct or not. The captions with higher uncertainty are shown as a warning in red. We recommend that you review every line, but if you are limited on time start by editing only the captions with higher uncertainty first. You can filter to only show these by clicking the settings icon in the top right corner then selecting "Review Warning Only" of the editing tool. Please do note that there
Find and Replace
Within the settings, you will also see a Find and Replace Tool. We recommend using this for names and other proper nouns or other uncommon words. When captioning our own Webinars, we often have to change "Box cars" to "BoxCast."
This allows you to control when a caption shows up on the screen.
Add a Caption
You can add a new line at the end of the list of captions be selecting Insert Cue.
- When you are finished editing, you can click Publish. It will take a few minutes for those captions to process be live for your viewers in the BoxCast Player. Feel free to leave the page. No further action is required to push those captions live.
- Watch your Broadcast with Captions by clicking the CC icon in the bottom right corner of the player.
1) The captions show up underneath the playback bar so you may not see them immediately.
2) If you skip ahead on the video, the caption may not show up immediately. The caption files take a bit of time to load completely.
1. Can I add Captions Automatically to a live broadcast?
No, unfortunately at this time the technology does not exist to automatically process captions fast enough for live broadcasts.
2. What languages are supported?
Currently, English is the only supported language. Translations or transcriptions of other spoken languages is not supported.
3. Will these captions show up everywhere that I streamed the broadcast?
The captions will show up on any BoxCast viewer experience: BoxCast embedded Player, BoxCast.tv and BoxCast Apps for AppleTV and Roku.
4. Does this support embedded captions via RTMP such as CEA-608, CEA-708, DVB-T, DVB-S, WST?
No. We only support automatically generated captions or separated captions like WebVTT files.
5. Can the automatically generated captions be downloaded?
No. They cannot be downloaded and they will also not show up with the broadcast download.