Exporting session to Pro Tools about pyaaf2

[MartinDelille]

Yes I solved it and the problem was simple: I was lacking a composition mob:

with aaf2.open(aaf_file, "w") as f:
    meta = probe(wav_file)

    master_mob, source_mob, tape_mob = f.content.link_external_wav(meta)

    master_clip = master_mob.create_source_clip(slot_id=1, length=100)

    sequence = f.create.Sequence(media_kind="sound")
    comp_fill = f.create.Filler("sound", 50)
    sequence.components.append(comp_fill)
    sequence.components.append(master_clip)

    video_rate = "25"
    comp_mob = f.create.CompositionMob("the_composition")
    f.content.mobs.append(comp_mob)

    timeline_slot = comp_mob.create_timeline_slot(video_rate)
    timeline_slot.name = "track_one"
    timeline_slot.segment= sequence

[MartinDelille]

Ok I manage to open protools.aaf by removing the following line: https://github.com/markreidvfx/pyaaf2/blob/master/examples/qt_aafmodel.py#L104

[markreidvfx]

I don't have protools so I'm not sure about that error. Will take a look your aaf and see if I notice anything strange. The MobID exception should be easy to fix by adding MobID.__lt__

[markreidvfx]

the MobID.__lt__ issue is fix in 270a380

[markreidvfx]

Any luck with this? @iluvcapra contributed link_external_wav. Maybe they have had a similar issue.

[iluvcapra]

I've been able to get AAFs created for Pro Tools to open, it was part of my testing for my contribution. However, I never tried to make an AAF with just a linked content mob, it was always through SourceMobs in a sequence.

Based on some experience I've had with AAFs from Premiere, I think for Pro Tools you need to have a one and only one composition and link everything through that in order for Pro Tools to translate it. PT is very finicky about the AAF it gets.

[iluvcapra]

I have sample code that works but it's quite long, I can post the jupyter notebook if you want.

[rolodub]

Hello,
I'm also trying to run these lines but it seems not working. I have an exception. I'm on python 3.7.
Have you any idea?
Traceback (most recent call last): File "/Users/rolandduboue/PycharmProjects/protaaf/protaaf_classes/test_delille.py", line 36, in <module> master_mob, source_mob, tape_mob = f.content.link_external_wav(meta) File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/content.py", line 84, in link_external_wav return ama.create_wav_link(self.root, metadata) File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/ama.py", line 407, in create_wav_link tc.start = metadata['format']['tags']['time_reference'] or 0 File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/components.py", line 257, in start self['Start'].value = value File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/properties.py", line 55, in func_wrapper result = func(self, *args, **kwargs) File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/properties.py", line 162, in value self.data = self.typedef.encode(value) File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/types.py", line 707, in encode return self.renamed_typedef.encode(data) File "/Users/rolandduboue/PycharmProjects/protaaf/venv/lib/python3.7/site-packages/aaf2/types.py", line 125, in encode return pack(self.pack_format(), value) struct.error: required argument is not an integer

[iluvcapra]

@rolodub Can you provide a Wav file that triggers this error?

[rolodub]

@iluvcapra thanks, here it is!
000_160612.wav.zip

[rolodub]

It seems working with 16bits file. not 24bits... is it true?

[iluvcapra]

For whatever reason, ffprobe is returning the WAV's time_reference as a string and not an integer, I'm not sure if ffprobe's behavior has changed since my last test runs. This is an easy fix but I'm slammed on other projects for the time being...

[rolodub]

In my experiments, ffprobe doesn't return "time_reference" but timecode. -> Original timecode cannot be set:
ama.py is waiting for time_reference:
t = tape_mob.create_empty_sequence_slot(edit_rate, media_kind='timecode')
tc = f.create.Timecode(int(float(edit_rate)+0.5), drop=False)
tc.length = int(length)
if 'tags' not in metadata['format'].keys() or 'time_reference' not in metadata['format']['tags']:
tc.start = 0
else:
tc.start = metadata['format']['tags']['time_reference'] or 0
FFPROBE is returning:
"tags": {"application_platform": "Microsoft Windows", "company_name": "Dalet - Digital Media Systems", "generation_uid": "9d84428c-78df-4062-9f1f-0bbf7dfeab9d", "material_package_umid": "0x060A2B340101010501010D2013000000CEFBDC18BCA54FBE8E7411CD7AA8C7CD", "modification_date": "2018-01-26T19:30:18.000000Z", "product_name": "DDM Native", "product_uid": "4cf1f334-3b47-4fd1-8ba9-34803c0940e5", "product_version": "4.0.226286.254954", "timecode": "00:00:00:00", "uid": "be24c396-ba44-429d-8790-b992149c04de"}},

I think that the 24 bits wave import problem comes from Summary parameter. 24 bits waves are working well with summary set as it:
source_mob["EssenceDescription"].object["Summary"].value = [82,73,70,70,248,15,0,0,87,65,86,69,102,109,116,32,16,0,0,0,1,0,1,0,128,187,0,0,128,50,2,0,3,0,24,0]

[iluvcapra]

Huh. These are unusual format fields for ffprobe, I've never seen them before. What's your ffprobe -show_banner?

[rolodub]

ffprobe version 4.1.3 Copyright (c) 2007-2019 the FFmpeg developers built with Apple LLVM version 10.0.0 (clang-1000.11.45.5) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr libavutil 56. 22.100 / 56. 22.100 libavcodec 58. 35.100 / 58. 35.100 libavformat 58. 20.100 / 58. 20.100 libavdevice 58. 5.100 / 58. 5.100 libavfilter 7. 40.101 / 7. 40.101 libavresample 4. 0. 0 / 4. 0. 0 libswscale 5. 3.100 / 5. 3.100 libswresample 3. 3.100 / 3. 3.100 libpostproc 55. 3.100 / 55. 3.100 Missing argument for option 'show_banner'

[iluvcapra]

So weird, I don't get this...

% ffprobe -hide_banner -show_format -of json 000_160612.wav 2>/dev/null  
{
    "format": {
        "filename": "000_160612.wav",
        "nb_streams": 1,
        "nb_programs": 0,
        "format_name": "wav",
        "format_long_name": "WAV / WAVE (Waveform Audio)",
        "duration": "10.710042",
        "size": "1575016",
        "bit_rate": "1176477",
        "probe_score": 99,
        "tags": {
            "encoded_by": "TASCAM DR-10",
            "date": "2016-06-12",
            "creation_time": "01:47:26",
            "time_reference": "309406697",
            "coding_history": "A=PCM,F=48000,W=24,M=mono\r\n"
        }
    }
}

(I've included by hostinfo and banners below.)

Is this a host-independent thing?

% hostinfo                                    
Mach kernel version:
	 Darwin Kernel Version 19.3.0: Sun Dec  8 22:27:29 PST 2019; root:xnu-6153.80.8.0.1~15/RELEASE_X86_64
Kernel configured for up to 4 processors.
2 processors are physically available.
4 processors are logically available.
Processor type: x86_64h (Intel x86-64h Haswell)
Processors active: 0 1 2 3
Primary memory available: 16.00 gigabytes
Default processor set: 530 tasks, 2445 threads, 4 processors
Load average: 1.70, Mach factor: 2.29
% ffprobe -version
ffprobe version 4.2.1 Copyright (c) 2007-2019 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.8)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
libavutil      56. 31.100 / 56. 31.100
libavcodec     58. 54.100 / 58. 54.100
libavformat    58. 29.100 / 58. 29.100
libavdevice    58.  8.100 / 58.  8.100
libavfilter     7. 57.100 /  7. 57.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100

[iluvcapra]

(Also @rolodub maybe you should start a new ticket for this? @markreidvfx has closed this one.)