Claude 6c13dda2bf export: 32-bit integer and 32-bit float audio; Sample Size lists every size and greys out the unsupported ones ...

- AudioSettings gains `float`; `bits` takes 16, 24 or 32. `SampleFormat` (Int16 / Int24 /
  Int32 / Float32) and `ExportSettings::supports_sample_format` decide what each codec and
  container stores: WAV, AIFF and QuickTime PCM all four, MXF integers, FLAC integers.
  `validate` refuses float without 32 bits and float in FLAC or MXF.
- WAV float is WAVE_FORMAT_IEEE_FLOAT (EXTENSIBLE for more than two channels) with a `fact`
  chunk; AIFF float is AIFF-C `fl32`; QuickTime float is `lpcm` with the float flag; MXF writes
  32-bit integers. Float keeps the mix as it is, peaks above 0 dBFS included; 16 and 24 bit
  write the same bytes as before.
- FLAC encoder: 8-32 bits. 32-bit stereo is coded independently (a side channel would need 33
  bits), the sample range check no longer overflows, and 32-bit frames point at STREAMINFO for
  the size, which symphonia 0.5 (FilmCraft's own FLAC import) and ffmpeg both read.
- Export mode: Sample Size shows 16 bit, 24 bit, 32 bit and 32 bit float like Audio Format
  does, greying out what the format cannot store with the reason on hover; a size that stops
  being available (float after switching to FLAC) becomes 32-bit integer. es, fr, pt-br, id,
  ja and zh-cn strings.
- Tests: writer layouts and ffprobe codecs for every new format, round trips through ffmpeg
  and FilmCraft's own readers in WAV, AIFF, MOV, MXF and FLAC, headroom of a +6 dB tone,
  refused combinations, full-scale 32-bit FLAC through ffmpeg (MD5 too) and symphonia, and a
  UI test of the selector.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015nzevSsTNZxHPpUngfGTAw

2026-10-12 05:42:44 +00:00

..

ffmpeg_oracle.rs

export: 32-bit integer and 32-bit float audio; Sample Size lists every size and greys out the unsupported ones

2026-10-12 05:42:44 +00:00