yt-dlp does not see ffmpeg, although it is specified in the requirements

[sp3cialSY]

I am writing an application using yt-dlp to download videos and when I try to merge the two formats via yt-dlp, I get the following error:
[WARNING] You have requested merging of multiple formats but ffmpeg is not installed. The formats won't be merged (received from logcat)
My requirements:
requirements = ffmpeg,python3,kivy,yt_dlp,python-for-android,pillow,kivymd

how can i fix it?

[github-actions]

👋 @sp3cialSY,
Sorry to hear you are having difficulties with Kivy's Buildozer; Kivy unites a number of different technologies, so building apps can be temperamental.
We try to use GitHub issues only to track work for developers to do to fix bugs and add new features to Buildozer. This issue has been closed, because it doesn't describe a bug or new feature request for Buildozer.
There is a mailing list and a Discord channel to support Kivy users debugging their own systems, which should be able to help. They are linked in the ReadMe.
Of course, if it turns out you have stumbled over a bug in Buildozer, we do want to hear about it here. The support channels should be able to help you craft an appropriate bug report.