Premiere does not appear to correctly parse linear timewarps from OTIO imports - even it's own exports.
e.g. -1000% is read as -123.45% when imported into premiere, but shown correctly when imported into Resolve. Also +1000% resolves to 909.09%.
The speeds are (nearly) correct when the PP .otio export is converted to EDL with otiotool.
This was a 23.976 sequence, using offline files, but I think the math is incorrect regardless of frame rate.
There are discrepencies with timecode when using offline files too - e.g. sometimes the bin start is different from both the start time when it is loaded in the source monitor and when added to a sequence. Seems that the <TimecodeFormat> isn't correctly set for those masterclips.
https://drive.google.com/file/d/1S7rr-lung217W7483ru7sGMGSZhk6nQY - has project and OTIO and EDL export from PPro. The EDL shows correct speeds and in points.
EDL export from PPro
001 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:00:00:00 00:00:06:00
M2 OFFLINE1 -239.8 01:01:59:23
002 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:00:06:00 00:00:18:00
M2 OFFLINE1 -119.9 01:01:59:23
003 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:00:18:00 00:00:38:00
M2 OFFLINE1 -71.9 01:01:59:23
004 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:00:38:00 00:01:38:00
M2 OFFLINE1 -24.0 01:01:59:23
005 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:01:38:00 00:03:38:00
M2 OFFLINE1 -12.0 01:01:59:23
006 OFFLINE1 V C 01:01:59:23 01:00:59:23 00:03:38:00 00:07:38:00
M2 OFFLINE1 -06.0 01:01:59:23
007 OFFLINE1 V C 01:01:00:00 01:02:00:00 00:07:38:00 00:11:38:00
M2 OFFLINE1 006.0 01:01:00:00
008 OFFLINE1 V C 01:01:00:00 01:02:00:00 00:11:38:00 00:13:38:00
M2 OFFLINE1 012.0 01:01:00:00
009 OFFLINE1 V C 01:01:00:00 01:02:00:00 00:13:38:00 00:14:38:00
010 OFFLINE1 V C 01:01:00:00 01:02:00:00 00:14:38:00 00:14:58:00
M2 OFFLINE1 071.9 01:01:00:00
011 OFFLINE1 V C 01:01:00:00 01:02:00:00 00:14:58:00 00:15:04:00
M2 OFFLINE1 239.8 01:01:00:00
OTIO export from PPro (converted to EDL) Speeds are *close*. Source In points are incorrect on reverse speed events (but consistent).
001 Offline V C 01:08:00:00 01:08:06:00 00:00:00:00 00:00:06:00
M2 Offline File 01 -239.76023976023978 01:08:00:00
002 Offline V C 01:08:00:00 01:08:12:00 00:00:06:00 00:00:18:00
M2 Offline File 01 -119.88011988011989 01:08:00:00
003 Offline V C 01:08:00:00 01:08:20:00 00:00:18:00 00:00:38:00
M2 Offline File 01 -71.92807192807193 01:08:00:00
004 Offline V C 01:08:00:00 01:09:00:00 00:00:38:00 00:01:38:00
M2 Offline File 01 -23.976023976023978 01:08:00:00
005 Offline V C 01:08:00:00 01:10:00:00 00:01:38:00 00:03:38:00
M2 Offline File 01 -11.988011988011989 01:08:00:00
006 Offline V C 01:08:00:00 01:12:00:00 00:03:38:00 00:07:38:00
M2 Offline File 01 -5.994005994005994 01:08:00:00
007 Offline V C 01:01:00:00 01:05:00:00 00:07:38:00 00:11:38:00
M2 Offline File 01 5.994005994005994 01:01:00:00
008 Offline V C 01:01:00:00 01:03:00:00 00:11:38:00 00:13:38:00
M2 Offline File 01 11.988011988011989 01:01:00:00
009 Offline V C 01:01:00:00 01:02:00:00 00:13:38:00 00:14:38:00
M2 Offline File 01 23.976023976023978 01:01:00:00
010 Offline V C 01:01:00:00 01:01:20:00 00:14:38:00 00:14:58:00
M2 Offline File 01 71.92807192807193 01:01:00:00
011 Offline V C 01:01:00:00 01:01:06:00 00:14:58:00 00:15:04:00
M2 Offline File 01 239.76023976023978 01:01:00:00
v25.2.0 beta build 54
MacOS Sonama 14.4