pycmx 1.5.0

Python CMX 3600 Edit Decision List Parser

pycmx

The pycmx package parses a CMX 3600 EDL and its most most common variations.

Features

• The major variations of the CMX 3600: the standard, "File32", "File128" and long Adobe Premiere event numbers are automatically detected and properly read. Event number field and source name field sizes are determined dynamically for each statement for a high level of compliance at the expense of strictness.
• A more relaxed "tolerant" mode allows parsing of an EDL file where columns use non-standard widths.
• 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.
• ASC CDL and FRMC/VFX framecount statements are parsed and decoded.
• 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