closed-captions

My team produces iOS apps that play video using AVPlayer. We've recently been told that we MUST allow display of closed captions for all videos... but that the closed captions would not be coming as a track within the video files (we already support closed captions that come in this way). Instead, we'll be getting them as a separate text file. I've seen a couple references to including the caption text file in the SMIL, but I've found nothing about how to incorporate this text file into the playback experience. Does anyone have any personal experience with this, or know of any online

I am trying to integrate the HTML5 video player in my application. My video sources and the caption (for track tag) are coming from a different domain. When I use the <video crossOrigin="anonymous"> <source src="domain1Url"> ... </source> <track kind="captions" label="English Captions" src="domain2Url" srclang="en" default> </video> All of the above code works fine for me in Chrome insecure mode(disabled web security). With regular Chrome, if I don't specify the crossOrigin attribute, I get an error saying Text track from origin '...' has been blocked from loading: Not at same origin as the

Youtube supports some binary caption file formats, such as ebu-stl. I've got an *.stl file that uploads and processes just fine when I upload it via the web interface. But when I try to upload it via the API v2 with a POST request, it does not seem to recognize the file format properly. The POST request looks like this : POST /feeds/api/videos/VIDEO_ID/captions HTTP/1.1 Host: gdata.youtube.com Content-Type: application/vnd.youtube.timedtext; charset=UTF-8 Content-Language: en Slug: Title of caption track Authorization: Bearer ACCESS_TOKEN GData-Version: 2 X-GData-Key: key=DEVELOPER_KEY

I am trying to download closed captions for this public youtube video (just for testing) https://www.youtube.com/watch?v=Txvud7wPbv4 I am using the code sample(captions.py) below that i got from this link https://developers.google.com/youtube/v3/docs/captions/download I have already stored the client-secrets.json(oauth2 authentification) and youtube-v3-api-captions.json in the same directory (asked in the sample code) I put this code line in cmd : python captions.py --videoid='Txvud7wPbv4' --action='download' I get this error: I don't know why it doesn't recognise the video id of this public