Command failed

[gauri08]

I am trying to add watermark to video but it failed.
Error is:

error: { Error: Command failed: ffmpeg -i assets/encoded/upload-157113597459120191009_171749.mp4 -i assets/logo/logo.png -filter_complex "overlay=0-0+0:main_h-overlay_h-0+0" assets/encoded/water-157113597459120191009_171749.mp4
'ffmpeg' is not recognized as an internal or external command,
operable program or batch file.

at ChildProcess.exithandler (child_process.js:294:12)
at ChildProcess.emit (events.js:188:13)
at ChildProcess.EventEmitter.emit (domain.js:441:20)
at maybeClose (internal/child_process.js:978:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:265:5)

killed: false,
code: 1,
signal: null,
cmd:
'ffmpeg -i assets/encoded/upload-157113597459120191009_171749.mp4 -i assets/logo/logo.png -filter_complex "overlay=0-0+0:main_h-overlay_h-0+0" assets/encoded/water-157113597459120191009_171749.mp4' }

Please help me !

[web-linda]

To use this library requires that ffmpeg is already installed

[gauri08]

ffmpeg is already installed.
It gives error for some videos.

[web-linda]

It may be your ffmpeg has a fail position.

[web-linda]

You must be sure your ffmpeg has a best position to your code file

[web-linda]

You must be sure your ffmpeg has a best relative path to your code file

[gauri08]

Sorry, I didn't get

[gauri08]

It gives Invalid data found when processing input