According to the ETI style guideline,
Some cases of additional information that is not part of the title and also not intended to distinguish the track should be removed:
“Song (bonus track)”: just “Song”
“Song (new song)”: just “Song”
“Song (The Beatles cover)”: just “Song”, with the recording linked to the appropriate The Beatles work with the recording of relationship (and the “cover” attribute).
If a track is listed as “SongName (music video)” on the back cover, do I remove that ETI? I can always recording-recording relationships to link the audio track with its music video, just like the Beatles example above. But it can also be argued that “(music video)” is intended to distinguish the audio track and the video track, which would be named the same otherwise. So does this mean the ETI should only be removed when the audio and the music video are on the same medium (since having the audio on a CD and the music video on a DVD can already distinguish the two, printing “(music video)” was not intended to distinguish)?