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mxf-track-swap

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    MXF-Track-Swap.au3
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    README.md

    mxf-track-swap

    Provide a mxf (tested only with xdcam hd 422 op1a including 8 audio tracks) and create a new one where you can swap the audio tracks. You can provide a stereo audio file too, to embed it into the new mxf.

    Prerequisites

    To build your swapper yourself you need a compiled ffmpeg and bmxtranswrap that must be embedded into your swapper. You eventually need the vcruntime140_1.dll too if not provided by your windows at C:\Windows\System32. Customize the following code lines:

    FileInstall('K:\ffmpeg\bin\ffmpeg.exe', @TempDir & "\ffmpeg.exe", $FC_OVERWRITE) FileInstall('K:\bmxtranswrap\bmxtranswrap.exe', @TempDir & "\bmxtranswrap.exe", $FC_OVERWRITE) FileInstall('K:\bmxtranswrap\vcruntime140_1.dll', @TempDir & "\vcruntime140_1.dll", $FC_OVERWRITE)

    Manual

    Start the app and drag and drop a mxf file onto the gui. You can drag and drop an audio stereo file too.

    Screenshot of the drag and drop gui

    After pushing the "Next" button you have to do your routing.

    Screenshot of the routing gui

    The tracks of the source are provided on the left side, the tracks of the target on the bottom. Click the radios for setting the cross points.

    As we mostly use this tool for distributing audio descriptions for severeal use cases there are 3 preset buttons you can use too.

    • button 1+2 <-> 5+6: swap tracks 1 and 2 with 5 and 6
    • button ext. AD > 5+6: embed an external audio description in tracks 5 and 6
    • button ext. AD > 1+2: embed an external audio description in tracks 1 and 2

    When you are ready with the routing push the button "Swap". A gui will show the progress of the swapping.

    Screenshot of the progress gui

    The new mxf file will be created in %temp% folder. This folder will be opened automatically. The file naming is made with this rules:

    • video file name_
    • 1-routed source track_
    • 2-routed source track_
    • 3-routed source track_
    • 4-routed source track_
    • 5-routed source track_
    • 6-routed source track_
    • 7-routed source track_
    • 8-routed source track
    • .mxf

    The routing example in the image above would be named Spurkennung_1-5_2-6_3-3_4-4_5-L_6-R_7-8_8-7.mxf.

    Insides

    Wrapping with ffmpeg can't create valid v1.3 op1a mxf in ard zdf profile. This is done with bmxtranswrap. Bmxtranswrap can swap audio tracks or mute them. But it can't insert external audio. So if external audio is provided the track swapping, muting and inserting is done with ffmpeg and the mxf is rewrapped with bmxtranswrap afterwards. Else the swapping and muting is done with bmxtranswrap alone.

    Known issues

    If you use only one track ot the external stereo wav file (e.g. "[R]") it breaks: "Filter channelsplit:FL has an unconnected outut".