I haven't found anything for it yet other than perhaps TubeBuddy.
BUT I can give you a quick strategy to finding HOT keywords manually.
Download the chrome extension called, VidIQ. Once enabled, this tools will show stats alongside the youtube search results and single videos.
NO IDEAS FOR KEYWORDS?
Here's the technique -
1) Find a handful of competitor's channels that have a moderate sized subscriber base (make sure they aren't the big dawg in the niche).
- Do this by using the related channel feature on the right side panel of a YouTube channel page.
- Copy the URL to a spreadsheet
2) Now look through the videos of each channel
- Go straight to the bottom and start at their OLDEST videos if possible
3) Scroll up through their videos and look for one that performed significantly better than their adjacent videos.
- Click through each high performing video and copy the URL to a spreadsheet... DON'T watch the video (it's so easy to get lost in the Tube that is YouTube)
- Look in the top right corner of the YouTube page and you'll see stats given by VidIQ. Check their Views/hr stat to get an idea of how its performing organically. I aim for videos with 1 + View/hr but what is good depends on your monetization strategy and industry.
- If the video isn't performing to your standards. Delete it from the list
MINING THEIR KEYWORDS:
You should now have a good sized list of high performing videos that got a significant amount of views despite the channel not having a huge subscriber base. Time to reverse engineer these!
1) Create a New spreadsheet for each video you analyze
2) Copy and Paste the title of the video
3) Look at the Keyword tag area of VidIQ and record any variations they are tagging with.
- VidIQ will show you an estimate of their position for each keyword tag they have! Make specially note of this as these, along with the title keywords are the hot keywords you want to be targeting.
There is a lot more strategies for Keyword Research that I can talk about but I think this response is getting hella long and I should save that for an actually post rather than a reply hahah.
Let me know if you'd like a complete post on this topic!
Cheers