This parameter will affect only AAC Audio files but also some ProRes files which contain AAC Audio codec.
For these files, re-encoding Audio is needed. New audio will keep the same bitrate as the original audio.
PlumePack uses the high quality Fraunhofer SDK encoding library to re-encode those audio files, so you should not hear the difference from the original.
Disabling this parameter will exclude those files from trimming, instead they will be copied.
This parameter is enabled by default because mostly people don't care about the Audio Codec inside their footages and if Audio is re-encoded or not, as long as they can't hear the difference from the original.
Parameter : Drop Metadata Streams if Necessary
This parameter could affect some particular footages with metadata information stored as "Stream" inside the file.
Storing Metadata as Stream often means that the information depends on frames.
For example in a GoPro footage, a Metadata Stream can be the GPS position of the Camera along the footage.
For these files, PlumePack automatically detects an unknown Metadata Stream on the footage and depending on this parameter, decides to trim the footage and drops (removes) this metadata from the trimmed file or excludes this file from trimming (the file will be copied instead).
This parameter is set to "Enabled" by default because users mostly don't care about those Metadata and don't even know of their existence.
Parameter : Trim InPoint when Rounding Issues on clip
This parameter is useful only if you are using media inside a sequence that have a different frame rate than their sequence.
In this particular case, when Premiere Pro want to display a given frame of the sequence, the frame of the media with a different frame rate is rounded and this is dependant to the first frame of the clip used in the timeline.
This can lead to duplicate frames or frames missing when reading the timeline. PremierePro users generally change the "Footage Interpretation" of their clips for that purpose : so footage and sequence have the same framerate.
So if you want trim the beginning of the clip which have a different frame rate than its sequence, the first frame of the clip will not be the same. So the dupplicate/missing frames will be moved, and you will not have the exact same displayed frames.
For example, if 2 frames were dupplicated initially at a time given in timeline for the current clip, after trimming the dupplicated frames will be at another time.
If you enable this parameter, this means you don't care about this little issue and you want to trim your clip from inPoint to outPoint.
If you disable this parameter, you will force PlumePack not to trim the beginning of the file and avoid this little issue but the final project could be bigger.
Parameter : Remove Unused Items
This parameter will remove any unused items imported into the project. It can be for example some footages you imported but didn't use in any timeline.
If you set this parameter to false, nothing will be removed from your original projects if it could not be replaced (replaced by copied/strimmed footage).
Parameter : Keep only Chosen Sequence and Deps
With PlumePack you can choose to export all sequences in your project or choose to export only a chosen Sequence.
By selecting the "Chosen Sequence", only elements which are in this sequence OR in the nested sequences which are inside this sequence (OR nested sequences inside the nested sequences, etc ...) will be exported at the new location.
The sequence can be chosen from the dropdown parameter. If you don't find the sequence name you would want in the list, hit the "Reload" button next to the dropdown.
Other Premiere Pro items (Media but also any other item not used from the Main Sequence) will be deleted.
This parameter can't be used if "Removed Unused Items" is set to false.