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Question: How does Reaper encode the TXXX in ID3? It looks like there's 7 bytes between TXXX and the actual content, what do they contain?
Asked by Mespotine (46.114.202.x) on July 16 2023, 7:44pm
Reply on July 16 2023, 9:00pm:
    The ID3v2 frame header is 10 bytes total -- 4 bytes (TXXX), 4 bytes size, 2 bytes flags. Then, since it's a text field, there's a byte for text encoding, then the data.

Comments:
  • Posted by Mespotine (46.114.206.x) on July 17 2023, 7:59pm:
    The key=value scheme for user-data, is that Reaper's own scheme or is it part of the ID3-standard as well? That one that is stored as Key Nul-Byte Value in the TXXX-frame. And which library do you use for reading/writing the metadata(if any)?

  • Posted by Justin on July 18 2023, 2:43am:
    we use = but yes it's encoded as a nul byte. see WDL/metadata.h PackID3Chunk() etc

  • Posted by Mespotine (2.247.250.x) on July 20 2023, 3:24pm:
    Thnx :)

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