Video · 10-bit production card
10-bit Log MP4: recover after a quick format
Can 10-bit Log recordings in MP4 be recovered after a quick format?
Short answer
Often yes: a quick format rewrites exFAT management data, while the high-bitrate Log footage stays in the data area until new recordings land on it. Eject the card without a test clip and scan it read-only. Check recovered files in a player that decodes 10-bit HEVC or H.264, otherwise intact clips may look broken.
The situation
The medium now has a new empty directory, while the previous 10-bit Log recordings in MP4 is missing.
A quick format writes a fresh directory and allocation table and declares the data area free, while the Log recordings themselves still lie in it. Because the card now looks empty and ready for work, the thing that really destroys them is the next take, not the format.
01 / Diagnose
Work out what actually disappeared
Formatting in the camera builds the folder skeleton again, so DCIM or M4ROOT reappear empty while the high-bitrate video blocks below them stay untouched. A full format, or a card shot on afterwards, is a different matter. What is lost in either case are file names and folder paths, which lived only in the directory that was replaced.
A quick format can replace file-system records without immediately overwriting every older content block. For 10-bit Log MP4, this matters because bit depth, color profile and codec parameters affect whether a valid stream displays correctly
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Leave the card out of the camera and out of any device that might create a test clip, a thumbnail database or a new management file.
- 2
Note where the format happened, in the camera or on a computer, and whether it was a quick or a full format, because that decides what remains.
- 3
Read the card in a card reader, scan it read-only, and write the results to an internal drive with room for the whole card contents.
- 4
Open the exported takes in a player that decodes 10-bit HEVC, then rename them by recording time, since the original names went with the directory.
Do not shoot a single test clip to see whether the card still works, and do not let the camera format it again. Stay away from disk utilities offering to fix or rebuild the file system: they write new structures onto the area holding your takes.
03 / Choose the method
Match the tool to the source
For stable, readable exFAT, NTFS and FAT16/FAT32 or uncompressed IMG, DD, RAW and BIN images.
Unconfirmed exports are marked .UNVERIFIED.
Recovered clips usually arrive without their original names, folders and creation dates, because a quick format replaced exactly that information. File Recovery Hero reads the card read-only and exports complete files; takes already covered by newer recordings are gone, and no scan brings them back.
04 / Verify
Check the recovered content, not just its name
Judge a recovered take by size and picture, not by its name. The file size should fit the bitrate multiplied by the running time, playback should reach the end without freezing, and the image should look flat and desaturated until the Log conversion is applied.
Keep the source until two verified copies exist. One working preview is not enough.
Sources and technical references
FAQ
Questions about this recovery case
Can 10-bit production card be recovered in this situation?+
A quick format writes a fresh directory and allocation table and declares the data area free, while the Log recordings themselves still lie in it. Because the card now looks empty and ready for work, the thing that really destroys them is the next take, not the format. The result still depends on what remains readable on the source.
What should I avoid before scanning?+
Do not shoot a single test clip to see whether the card still works, and do not let the camera format it again.
Does scanning write to my memory card?+
Your memory card is only read. Nothing is saved to it.
How do I know whether the result is complete?+
Judge a recovered take by size and picture, not by its name.