Set StartTime of filler, or sequence?

[MartinSRimsbo]

Hi! Thanks for an amazing module.

The answer to this question might be obvious, and I hope it is ok to ask questions here, but I can't find a way to set my sequence start time, or the start time of a filler for that matter. I thought that the EventSlotOrigin would be able to set the start time, but I cant get it to work in Pro Tools. If I open the AAF in Media Composer and export it straight away it ends up on 01:00:00:00 as I want it to, but when comparing all props between the two aafs I can't find the difference.

Very much appreciate any help.
Rather simplified my code looks like this:

import aaf2

with aaf2.open("newaaf.aaf", 'w') as f:
    ems = f.create.EventMobSlot()
    ems['EditRate'].value = 25
    ems['EventSlotOrigin'].value = 9000 #as a test value, does not work
    ems['SlotID'].value = 1000
    ems['PhysicalTrackNumber'].value = 1

    sequence = f.create.Sequence("DescriptiveMetadata")
    marker = f.create.DescriptiveMarker()
    marker['DescribedSlots'].value = set([1])
    marker['Position'].value = 100
    marker['CommentMarkerUser'].value = "A new marker that ends up in PT Comment-field"
    sequence.components.append(marker)

    ems.segment = sequence
    mob = f.create.CompositionMob()
    p_slot = mob.create_sound_slot()
    filler  = f.create.Filler("sound", 0)
    p_slot.segment.components.append(filler)
    p_slot['PhysicalTrackNumber'].value = 1
    mob.slots.append(ems)
    f.content.mobs.append(mob)

Best regards
Martin Sandström

[markreidvfx]

Add another slot with a single TimeCode component to the compositionMob. Timecode.start should be the set to the start time you want.

[MartinSRimsbo]

Thanks a lot!
Following your instructions I added:

tc_slot = mob.create_empty_sequence_slot(25, media_kind='timecode')
tc = f.create.Timecode(25, False)
tc.start = 90000
tc_slot.segment.components.append(tc)

And it Worked like a charm.
Best

[markreidvfx]

👍 no problem.

[zozzancs]

I just tried this above, I'm glad I found this discussion, however for some reason it doesn't seem to work for me.
Duration is set to 1 sec, but the 10 hour starttime doesn't seem to work, it defaults to 1 hour.

Any suggestions, please?
This is driving me crazy, I even asked chatgpt, no luck :)

comp_mob= f.create.CompositionMob()
comp_mob.usage = "Usage_TopLevel"
comp_mob.name = "whatever"

tc = f.create.Timecode(timecode_fps, True)
tc.start = 900000  # 10 hours
tc.length = timecode_fps  # 1 sec

timeline_slotV = comp_mob.create_timeline_slot(edit_rate)
timeline_slotV["PhysicalTrackNumber"].value = 1
sequenceV = f.create.Sequence(media_kind="picture")
timeline_slotV.segment = sequenceV
comp_fillV = f.create.Filler("picture", 0)
sequenceV.components.append(comp_fillV)
sequenceV.components.append(tc)

f.content.mobs.append(comp_mob)

Also when using only this code

tc_slot = mob.create_empty_sequence_slot(25, media_kind='timecode')
tc = f.create.Timecode(25, False)
tc.start = 90000
tc.length = 25
tc_slot.segment.components.append(tc)

I get a nice timeline starting at 10 hours with the duration of 1 sec, but when checking it in the bin, it says 0 dur and 0 start tc