Clean-room ProRes (SMPTE RDD 36) codec: 422 Proxy/LT/Standard/HQ and
4444/4444 XQ decode incl. alpha and interlaced fields, slice-parallel;
progressive encoder with frame-level quantiser rate control targeting
Apple nominal rates. Oracle tests vs ffmpeg (within 1 LSB on all 29
fixtures), round-trip, fuzz and ignored perf tests.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
