FFmpeg → Lossless MKV remux

Checked on 2026-10-11. Result: Checks passed.

Software: FFmpeg N-100410-gcd821c18dc
Platform: windows
Input: Copyright-free dual-audio chaptered MKV test file
Input type: Copyright-free test file
Output: Lossless MKV remux
Physical drive: Not included
Firmware: Not included
Output bytes: 4,530,772
Elapsed time: Not recorded
Conclusion: Software output checked with a test file; no drive result

This check did not include a physical drive or firmware. It covers only file- or image-based behavior.

Existing MKV re-inspected with ffprobe: H.264, two mono AC-3 tone tracks tagged eng/jpn, two chapter entries at 0 and 3 seconds, no subtitle stream. Size and SHA-256 match the August 29 manifest; registry sha256 remains null because rebuilds can change identity. This is metadata/fixity inspection, not a disc rip or playback test.

Preservation checks

Menu	Chapters	Audio tracks	Subtitles
Not checked	Not checked	Not checked	Not checked

Sources

CopyBluray synthetic fixture run — last checked 2026-10-11
FFmpeg project documentation — last checked 2026-10-11

Limits of this test file

File identity changes when rebuilt
No disc menu
No physical drive
No PGS subtitle
Audio language tags label synthetic mono tones, not spoken dialogue