Growing root cause (4th attempt): Premiere doesn't import H.264-in-.ts
("unsupported compression type"); its growing-file support is MXF OP1a.
Prior MXF/DNxHR failed because DNxHR is VBR and never flushes the incremental
index — XDCAM HD422 (mpeg2video, CBR) DOES write index segments into body
partitions mid-record (proven live via SIGKILL: 5 index segments, readable,
no footer). Growing master is now MXF OP1a / XDCAM HD422 4:2:2 CBR + PCM s16le,
operator bitrate as CBR (default 50M). live-path returns .mxf to match.
GUI: bitrate input is now always editable in growing mode (was hidden for
ProRes-selected codecs); codec menu shown disabled-with-explanation under
growing (it had only looked "missing" due to a stale served bundle).
Requires Premiere prefs: Media > "Automatically refresh growing files" ON,
and disable the two XMP-write-on-import options.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Zac Gaetano
32a2d0329e