FFMPEG command works in PowerShell but not in a batch file

Simply trying to extract frames from a video file using ffmpeg in a .bat file and it doesn’t work:

ffmpeg -i video.mp4 -qscale:v 1 -qmin 1 -qmax 1 -vsync 0 tmp_frames/frame%08d.jpg

The error message:

Unable to find a suitable output format for ‘.\tmp_frames\frameC:\Test’
.\tmp_frames\frameC:\Test: Invalid argument

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This command works fine in PowerShell by itself, but running it as a batch file yields the above error.

Any ideas on how to fix this in the batch file?

>Solution :

In the .bat file, you must use the escape code for %, which is %%

ffmpeg -i video.mp4 -qscale:v 1 -qmin 1 -qmax 1 -vsync 0 tmp_frames/frame%%08d.jpg