[lecoyote418]

There are algorithms that are better than others.

For example, ffmpeg's pitch correction using "atempo" filter (WSOLA) is average and might present artifacts depending on source audio.

ZTX (was Dirac) is another algorithm that's commercial and pretty much artifact free.

Btw, sound studios responsible for the 24-25 pitch shift often have the possibility to process the pitch shift on separate dialogue, music and effects tracks, limiting even more the artifacts in the converted output.