Hello folks, Following up on my previous email regarding ffmpeg mp4 metadata writing I have compiled the attached list of what I was able to find. This is the informational metadata for things like title, artist, episode, cover art, etc.
If the attached file can't be opened let me know. I have marked this as V1. I have to say I'm quite surprised that metadata is not better documented given it's one of the great additions to media files in recent years (IMHO). :-) For example a lot of the itunes references I found weren't even on the Apple site. They were on other sites not even affiliated with Apple. Added to this some pages only provided half the information and I found a bunch of references that seemed to contradict each other. It's clear as mud. :-) Things to note: 1. I'm not sure if this is a complete list. If not then feel free to add to it or let me know and I will update. 2. Does this make sense to go into the wiki (even if it's just the ffmpeg portion. 3. Can the current set of ffmpeg tags be extended to include the tags with no ffmpeg equivalent or is there some reason these can't be added? For example "TV Episode (tves) would be good to have to round out the current set of TV tags along with a lot of the other mp3 tags given ffmpeg can be used for mp3 as well. 4. The quicktime column is a work in progress. Most of these are the same as itunes but I found a few differences which I'm documenting. From most of my research it seems like the itunes tags are the ones used as a reference point (but correct me if I'm wrong). 5. There are a few highlighted in yellow. These are additional ffmpeg tags I found beyond a list that Gyan had posted. I'm not sure if these are valid or whether they're from an older version of ffmpeg and are no longer in use. References: The following are the main resources I got this information from. I scanned through a ton of other pages but they were mainly in support of these references. https://superuser.com/questions/1208273/add-new-and-non-defined-metadata-to-a-mp4-file#1208277 (Gyan, this is the SU page I originally referenced where you provided ffmpeg keys) https://kdenlive.org/en/project/adding-meta-data-to-mp4-video/ (Gyan, this page references more ffmpeg keys thare aren't mention in the SU page. I highlighted these in yellow in the attached spreadsheet) https://github.com/sergiomb2/libmp4v2/wiki/iTunesMetadata (itunes/mp4v2 references in attached spreadsheet) http://id3.org/id3v2.4.0-frames Let me know if this is useful. Cheers. Karen
metadata-tags-ffmpeg-mp4.xlsx
Description: Binary data
_______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
