ReplayGain Title correction is not evaluated?

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I'm guessing, by looking at this table (https://en.wikipedia.org/wiki/Comparison...ts_support) that conversion is the problem.

You can click the link and read the footnote or read this: OGG containers are not supported and will trigger conversion. So the replay gain header you've put in is probably skipped because the media is being transcoded to a different format. I don't know as though that directive is read in when the media is transcoded since headers may not be fully parsed or executed when ffmpeg processes the file.

Is there a non-lossy way to apply the replay gain via scripting for these files pre-emptively? Or a conversion process to turn them into FLAC files while taking into account the replay gain? I'm just spitballing, as I've never dealt with OGG Vorbis and I'm not aware of the benefits or why one would choose that format over another.