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CMX 3600 Edit Decision List Parser

Project description

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pycmx

The pycmx package provides a basic interface for parsing a CMX 3600 EDL and its most most common variations.

Features

  • The major variations of the CMX 3600: the standard, "File32" and "File128" formats are automatically detected and properly read.
  • Preserves relationship between events and individual edits/clips.
  • Remark or comment fields with common recognized forms are read and available to the client, including clip name and source file data.
  • Symbolically decodes transitions and audio channels.
  • Does not parse or validate timecodes, does not enforce framerates, does not parameterize timecode or framerates in any way. This makes the parser more tolerant of EDLs with mixed rates.
  • Unrecognized lines are accessible on the EditList and Event classes along with the line numbers, to help the client diagnose problems with a list and give the client the ability to extend the package with their own parsing code.

Usage

Opening and Parsing EDL Files

>>> import pycmx
>>> with open("tests/edls/TEST.edl") as f
... 	edl = pycmx.parse_cmx3600(f)
...
>>> edl.title
'DC7 R1_v8.2'

Reading Events and Edits

EditList.events is a generator...

>>> events = list( edl.events )  
>>> len(events)
120
>>> events[43].number 
'044'

...and events contain 1...n edits.

>>> events[43].edits[0].source_in 
'00:00:00:00'
>>> events[43].edits[0].transition.cut
True
>>> events[43].edits[0].record_out
'01:10:21:10'

Acessing Transitions and Enabled Channels

>>> events[41].edits[0].transition.dissolve
False
>>> events[41].edits[1].transition.dissolve
True
>>> events[41].edits[0].clip_name
'TC R1 V1.2 TEMP1 DX M.WAV'
>>> events[41].edits[1].clip_name
'TC R1 V6 TEMP2 M DX.WAV'

              # parsed channel maps are also
              # available to the client
>>> events[2].edits[0].channels.get_audio_channel(7)
True
>>> events[2].edits[0].channels.get_audio_channel(6)
False
>>> for c in events[2].edits[0].channels.channels:
...     print(f"Audio channel {c} is present")
... 
Audio channel 7 is present
>>> events[2].edits[0].channels.video
False

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