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FourCC contains invalid characters: 00 00 00 00

See original GitHub issue

Bug description On some iTunes purchased movies (m4v), I get FourCC contains invalid characters: 00 00 00 00

I can patch/fix this by return " "; (4x spaces) instead throwing an Error in https://github.com/Borewit/music-metadata/blob/e0725b95494e9107f8498e9642f85fff3f84a501/lib/common/FourCC.ts#L16

But how to fix this really, I don’t know

Expected behavior I dont’ know, whether it’s possible to parse drm protected tracks, but I think at least the tags and the duration should work.

Audio file demonstrating the problem Not possible due copyright

Issue Analytics

State:
Created 4 years ago
Comments:12 (7 by maintainers)

Top GitHub Comments

1reaction

Borewitcommented, Feb 18, 2020

Fixed in v6.3.4

0reactions

Borewitcommented, Feb 19, 2020

I still get the same error with v6.3.4

UnhandledPromiseRejectionWarning: Error: FourCC contains invalid characters: 00 00 00 00
    at Object.get (node_modules/music-metadata/lib/common/FourCC.js:14:19)
    at SampleDescriptionTable.get (node_modules/music-metadata/lib/mp4/AtomToken.js:220:46)
    at StsdAtom.get (node_modules/music-metadata/lib/mp4/AtomToken.js:241:57)
    at FileTokenizer.readToken (node_modules/strtok3/lib/AbstractTokenizer.js:27:22)
    at async MP4Parser.parseAtom_stsd (node_modules/music-metadata/lib/mp4/MP4Parser.js:380:22)
    at async Function.readAtom (node_modules/music-metadata/lib/mp4/Atom.js:25:9)
    at async Atom.readAtoms (node_modules/music-metadata/lib/mp4/Atom.js:36:30)
    at async Function.readAtom (node_modules/music-metadata/lib/mp4/Atom.js:25:9)
    at async Atom.readAtoms (node_modules/music-metadata/lib/mp4/Atom.js:36:30)
    at async Function.readAtom (node_modules/music-metadata/lib/mp4/Atom.js:25:9)

which corresponds with: https://github.com/Borewit/music-metadata/blob/45a0b090622afc5c21e50a2da9438cee0ce1f0e9/lib/mp4/AtomToken.ts#L495

That is in the Sample Description Atom (‘stsd’), in the dataFormat field, or misread of that field:

Important: When parsing sample descriptions in the ‘stsd’ atom, be aware of the sample description size value in order to read each table entry correctly. Some sample descriptions terminate with four zero bytes that are not otherwise indicated.

That file would be of great value @ozelot379, can you reach out in chat?