"ffprobe not found" when using 'ffmpeg_location' on binary

[ghost]

• I've verified and I assure that I'm running youtube-dl 2017.06.25
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I'm using sl4a to run a python script on Android which uses the YoutubeDL API. I want to download from youtube and convert to .mp3, thus I've taken a prebuilt binary from [https://github.com/WritingMinds/ffmpeg-android] , put it in the script root directory path and used 'ffmpeg_location' in the ydl_opts dict (code and error pictures below).

The problem is it gives me a "ffprobe not found" error. Isn't the ffprobe included in the ffmpeg binary? What could be a solution?

ydl_opts = {
		'ffmpeg_location': '/sdcard/sl4a/scripts/yt-sync/ffmpeg',
		'format': 'bestaudio/best',
		'postprocessors': [{
			'key': 'FFmpegExtractAudio',
        	'preferredcodec': 'mp3',
        	'preferredquality': '320',
		}]
	}
	
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download(['https://www.youtube.com/watch?v=WHRnvjCkTsw'])

Picture when setting the wrong ffmpeg binary file path:

Here I've set the correct path and the error dissapeard meaning YoutubeDL got the ffmpeg.

Thank you.

[dstftw]

ffprobe is a standalone binary. The solution is to install ffprobe.