AcademySoftwareFoundation
Avid Media Composer AAF fails when reading group clips
I'm experimenting with OTIO for AAF roundtrips in Avid and doing some programmatic reordering of clips. Pretty simple stuff, let's say sorting the clips alphabetically.
I am running into problems with group clips. Sometimes they work, sometimes they don't. It's unclear when there is a problem.
Are AAF Group Clips from Avid supported in the current adapter set? Any guidance in getting this working? Or maybe some hints as to where to look?
ISSUE 1
Traceback (most recent call last):
File "Python/opentimelinio-testing/controller.py", line 3, in <module>
timeline = otio.adapters.read_from_file("/Users/russellanderson/Desktop/thetest.aaf")
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/adapters/__init__.py", line 140, in read_from_file
return adapter.read_from_file(
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/adapters/adapter.py", line 137, in read_from_file
result = self._execute_function(
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/plugins/python_plugin.py", line 174, in _execute_function
return (getattr(self.module(), func_name)(**kwargs))
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 1147, in read_from_file
result = _transcribe(top, parents=list(), edit_rate=None)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 562, in _transcribe
result.append(_transcribe(child, parents + [item], edit_rate, indent + 2))
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 247, in _transcribe
track = _transcribe(slot, parents + [item], edit_rate, indent + 2)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 448, in _transcribe
child = _transcribe(item.segment, parents + [item], edit_rate, indent + 2)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 434, in _transcribe
child = _transcribe(component, parents + [item], edit_rate, indent + 2)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 497, in _transcribe
alternates = [
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 498, in <listcomp>
_transcribe(alt, parents + [item], edit_rate, indent + 2)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 262, in _transcribe
mobs = _find_timecode_mobs(item)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 130, in _find_timecode_mobs
for c in item.walk():
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/aaf2/components.py", line 204, in walk
raise NotImplementedError("Sequence returned {} not "
NotImplementedError: Sequence returned <class 'aaf2.components.Sequence'> not implemented
ISSUE 2
Untitled SourceClip_MUTED
Untitled SourceClip
Untitled SourceClip
Untitled SourceClip_MUTED
Untitled SourceClip
Untitled SourceClip
Traceback (most recent call last):
File "Python/opentimelinio-testing/controller.py", line 11, in <module>
anything = otio.adapters.write_to_file(timeline, "/Users/russellanderson/Desktop/mydemo.aaf")
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/adapters/__init__.py", line 191, in write_to_file
return adapter.write_to_file(
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/adapters/adapter.py", line 194, in write_to_file
result = self._execute_function(
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio/plugins/python_plugin.py", line 174, in _execute_function
return (getattr(self.module(), func_name)(**kwargs))
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/advanced_authoring_format.py", line 1174, in write_to_file
aaf_writer.validate_metadata(timeline)
File "Python/opentimelinio-testing/venv/lib/python3.9/site-packages/opentimelineio_contrib/adapters/aaf_adapter/aaf_writer.py", line 200, in validate_metadata
raise AAFValidationError("\n" + "\n".join(
opentimelineio_contrib.adapters.aaf_adapter.aaf_writer.AAFValidationError:
Untitled SourceClip_MUTED<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip_MUTED<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Untitled SourceClip_MUTED<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip_MUTED<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.duration.rate does not exist, 'NoneType' object has no attribute 'duration'
Untitled SourceClip<class 'opentimelineio._otio.Clip'> Clip.media_reference.available_range.start_time.rate does not exist, 'NoneType' object has no attribute 'start_time'
Hi Russel, thanks for joining the community!
@andewmoore-nz has been doing some fixes that seem to help a lot of cases with reading AAFs, would you mind testing with the branch we've been working on: https://github.com/reinecke/OpenTimelineIO/tree/MB_Fixes
I'm by no means the AAF expert in the community, but I know this branch seems to address issues for a lot of cases, it would be great to know if it helps you out.
thanks @reinecke I'll test this today! I did a quick test and the warnings and errors were all gone but the simple roundtrip was producing some errors within Avid. I'll post detail later.
Here are the results of a few quick test. Sequences are very basic, 5 or 6 edits, single tracks. If you feel like taking a look, here's the media I was working with:
https://www.dropbox.com/sh/s2ajd9j97nf3btl/AABIonb2HNQOn1dlguGhxsNTa?dl=0
And the code:
import opentimelineio as otio
timeline = otio.adapters.read_from_file("test-footage/AAFs/CUT1-GROUPCLIP.aaf")
#timeline = otio.adapters.read_from_file("test-footage/AAFs/CUT1-MASTERCLIP.aaf")
#timeline = otio.adapters.read_from_file("test-footage/AAFs/CUT1-SUBCLIP.aaf")
for clip in timeline.each_clip():
print (clip.name)
anything = otio.adapters.write_to_file(timeline, "my-results.aaf")
Importing the AAFs results in some strange behavior that also seems a little random. Sometimes it brings in new master clips / sub clips / group clips, sometimes it linked back to the correct media. Any time I brought in an AAF that had sub clips or group clips, I had this dialog:
The AAF contain just master clips seemed to work fine, no errors and it appears to have linked correctly.