
- The fmp4 extractor was reading from sampleEncryptionData even for not-encrypted samples, which I'm pretty sure isn't right. Fixed this. For all encrypted content I've seen, this change will be a no-op because isEncrypted is always true if there's an encryptionBox present. - Made webm extractor only set cryptoInfo if isEncrypted is true. - Align variable naming in the two extractors, for clarity.