Help downloading 60fps video with audio

[YeshYyyK]

Please follow the guide below

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.06.14. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.06.14

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

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• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
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Description of your issue, suggested solution and other information

A pretty simple question/help thing. I'm trying to get 60fps video using youtube-dl and ffmpeg by using the following command "youtube-dl -f 'bestvideo[height<=720]+bestaudio/best[height<=720]' URLHERE". The URL is a Youtube link that does work perfectly fine, and does has a 60fps option

I get a 'The system cannot find the file specified' as output in command prompt. I do have ffmpeg installed.

Youtube-dl does work fine for more basic downloads.

I am using the executable.

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[YeshYyyK]

Could I please get help for this? I have no clue what I have to do. I've included the command I'm trying to use as well.