Что такое формат файла MOI?
A .moi file, also known as a Movie Index file, is created alongside the video file, which is saved with a .MOD extension. When an application opens the .mod file for playback or editing, the corresponding .moi is read automatically to supply clip metadata.
.moi is not a video or audio stream - it is a small binary sidecar produced by JVC Everio and Panasonic SD/HDD camcorders, typically just a few hundred bytes to a few KB. The file stores the recording date and time, clip duration in milliseconds, aspect ratio, TV system, and audio codec (AC-3 or MPEG). Multi-byte fields use big-endian byte order; the file begins with a version stamp such as V6 at offset 0.
The format was superseded by AVCHD, which embeds metadata within the stream itself. To watch the footage, open the .mod video - not the .moi index.
Безопасность и защита
РИСК: LOWA .MOI is a tiny passive metadata record with no executable content - completely harmless. The only thing to know is practical, not security: it isn't video/audio, so don't waste effort trying to 'play' or 'convert' it. After copying footage off a camcorder you can usually delete the .MOI files safely; you only lose the camcorder software's view of the original recording date. Keep them only if you rely on Everio MediaBrowser / VideoCam Suite for dates.
Детали формата
в двух словахПрограммы, открывающие файлы MOI
Windows3 apps
Hex editor (HxD)
Бесплатно Open the .MOI in a hex editor only if you need to inspect the raw metadata fields. There's no 'viewer' - the file is an index, not media.
JVC Everio MediaBrowser (legacy)
Встроенная The camcorder's bundled software reads the .MOI alongside its .MOD to show the clip's date/length. Largely legacy; downloads often unavailable.
VLC media player (for the .MOD, not the .MOI)
Открытый код To watch the actual video, open the matching .MOD file in VLC. The .MOI itself is not playable. 
macOS1 app
Hex editor (Hex Fiend)
Открытый код Inspect the raw .MOI metadata fields if needed. To play the footage, open the sibling .MOD in VLC. 
Linux1 app
Hex editor / xxd
Открытый код 'xxd clip.MOI | less' to inspect the metadata bytes. Play the matching .MOD with VLC/ffplay. Технические подробности
глубокая спецификация| Format type | Fixed-offset binary sidecar (index record, not a media stream) |
| Companion video format | Paired one-to-one with a same-named `.MOD` or `.TOD` video clip |
| Typical file size | A few hundred bytes to a few KB - it indexes the clip, not the media itself |
| Byte order | Big-endian for all multi-byte fields |
| File signature (magic bytes) | Version stamp at offset 0 - commonly ASCII "V6" (hex 56 36) |
| Duration field | Clip length stored in milliseconds at byte offsets 0x0E-0x11 |
| Date/time field | Recording date and time encoded at offsets 0x06-0x0C |
| Aspect ratio / TV system | Stored in a 4-byte field at offsets 0x80-0x83 |
| Audio codec identifier | 2-byte field at offset 0x84: 0x00C1 = AC-3 (Dolby Digital), 0x4001 = MPEG audio |
| Audio bitrate field | Stored at offset 0x86 |
| Compression | None - raw binary fields with no data compression |
| Developer | JVC and Panasonic (tapeless camcorder vendors, introduced circa 2003) |
| Associated camcorder lines | JVC Everio GZ-series; Panasonic SD/HDD camcorder models |
| Superseded by | AVCHD (`.MTS`/`.M2TS`), which embeds metadata in the stream with no separate sidecar |
| MIME type | application/octet-stream (no dedicated MIME type registered) |
| Выпущен | circa 2003 (JVC Everio GZ-series and Panasonic SD/HDD camcorders) |
| Последняя версия | N/A (de facto vendor format; superseded by AVCHD .MTS, which has no separate index sidecar) |
| Спецификация | en.wikipedia.org |
Конвертации MOI
Вопросы и ответы сообщества
спрошено пользователямиВопросов пока нет - станьте первым, кто спросит о файлах MOI.
