Youtube API upload video size and length limit
You can now upload videos in excess of 15 minutes long. All you need to do is verify your YouTube account using the following link. Make sure you are logged into your YouTube account:
https://www.youtube.com/verify
Make sure you’re using an up-to-date version of your browser so you can upload files greater than 20GB. The maximum file size you'll be able to upload to YouTube is 128GB and the maximum duration is 11 hours.
The more up-to-date answer is here: https://support.google.com/youtube/answer/71673?hl=en
15 minutes is the default max length, but that can be extended by visiting https://www.youtube.com/verify The webpage says to make sure you're using an 'up-to-date' version of your browser to upload files over 20GB. The current (as of Nov 12, 2016) maximum file size is 128GB and the maximum duration is 12 hours.
Update : From Google support link
By default, you can upload videos that are up to 15 minutes long. To upload longer videos, follow the steps below to verify your account. If you have live streaming access, long uploads are enabled by default.
To upload longer videos, verify your account with the following steps:
- On a computer, go to the upload page at youtube.com/upload.
- At the bottom of the page, click Increase your limit. You can also go directly to https://www.youtube.com/verify.
- Follow the steps to verify your account. You can choose to receive a verification code through a text message on a mobile phone or an automated voice call.
- Once you've verified your account, you can upload videos that are longer than 15 minutes.
Make sure you're using an up-to-date version of your browser to upload files greater than 20GB.
Maximum upload size:
The maximum file size you can upload is 128GB or 12 hours, whichever is less. We've changed the limits on uploads in the past, so you may see older videos that are longer than 12 hours.
Initial Answer(Outdated) :
It's currently 2GB for browser-based uploads and 1GBb for direct uploads, at least until
the server which handles direct uploads is updated to handle 2GB as well.
Please check below links for more details :
i) https://groups.google.com/forum/#!topic/youtube-api-gdata/JqAX4n3a4Fk
ii)http://smallbusiness.chron.com/there-size-limit-youtube-26654.html