Minimal bug report

[FNsi]

Only few people will face it.(who cannot download it automatically but copy their own ffmpeg.exe to the location)😂😭

1' not checking whether ffprobe.exe exist or not when ffmpwg.exe exist.

2' not checking the version of ffprobe.exe which might raise await timed_supplier_async error

Bug reproduce 1.Choco install ffmpeg 2.copy ffmpeg.exe from choco installed location to chaineer/ffmpeg/ 3.using video frame iterator node to make video.

Will reproduce bug 1.

3'. Copy ffprobe.exe to chaineer/ffmpeg/ 4. using video frame iterator node to make video.

Will reproduce bug 2

😂😂😂🤷