Using ffmpeg can I inverse telecine with no re-encoding?

[Ronstang]

I have a large library of encoded movies and shows but I am working on making some older encodings come closer to being on par with what I do now. These movies are already encoded in HEVC and although my new settings are superior there will be no gain in re-encoding them but I do want to inverse telecine them to bring them to 24fps. Is there a way with ffmpeg to do this without re-encoding? I ran some files through FFmpeg Batch AV Converter using my normal settings and they worked but were re-encoded so I would rather just inverse telecine them, is this possible?

Thanks.

[davexnet]

Can you post a short clip of your source, something with some steady movement?
Does your source have duplicates frames?
I don't think it's possible without a re-encode

[Sharc]

You can try to IVTC on the fly using ffplay + IVTC filter. Something like

ffplay "your_source" -vf setfield=tff,fps=30000/1001,fieldmatch,decimate

[VoodooFX]

can I inverse telecine with no re-encoding?

That's not possible.