Quick note: Twitch embeds can only be created from a web browser right now and the embedded streams can’t be viewed from within the Tumblr app.
In a web browser, open up a new post with a video block. You can do this by clicking the video icon in the row of post options:
Or by inserting a video block:
Next, click “Add video from web”:
Paste a Twitch.tv link (like this one: https://www.twitch.tv/twitch) into the post and click “Insert.” Now the stream embed is in the post and you’re ready to publish it.
