Capture services: Difference between revisions

[[4.0.0]] includes video playback etc support in Album via mp4. These include a JPEG thumbnail, which is presumably used for video "validation". The EXIF from this JPEG doesn't seem to contain the same HMAC data as the original Album JPEGs. The EXIF is also now much larger: the MakerNote is 0x498-bytes, with encrypted data starting at offset +0x8. This encryption uses AES-CTR with hardcoded key/ctr. MAC calculation works the same way as the [[3.0.0]]+ JPEG MAC calculation, except with a different movie_kek_source/movie_key_source.