How to extract the same number of frames as with ffmpeg

[darkAlert]

For ffmpeg I use a simple command:
ffmpeg -i input.mp4 -qscale:v 2 %6d.jpeg

I initialize the VPF decoder like this:
decoder = nvc.PyNvDecoder(video_path, gpu_id)

I check the number of frames like this:
decoder.Numframes()

I have some h264 encoded videos at 30fps. And I get a different number of frames (sometimes more with ffmpeg, sometimes with VPF).

For me this is critical. Because I have annotated data extracted using ffmpeg and I want to test a model using VPF but can't compare the results frame by frame.

[RomanArzumanyan]

Hi @darkAlert

Apologies for big delay in response.
Please consider checking out https://github.com/RomanArzumanyan/VALI repository.
It's a VPF spin-off which is actively developed and maintained. It has compatible API and package naming.

Just clone your issue there. Thanks!