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# vttmisc
A library that contains a small set of scripts related to working with [VTT](https://docs.microsoft.com/en-us/typography/tools/vtt/).
## Installation and Usage
Vttmisc can be called via a build script, or directly from the command line.
```
$ pip install vttmisc
$ python vttmisc [-h] [--fix-offset] [--clear-svtca] [--makeCVAR] -i INPUTPATH [-s VTTPATH] [-d OUTPUT]
```
Options are as follows:
`--clear-svtca`
This script clears the "SVTCA[X]" tag from your VTT source files (specifically in the TSI1 table) as these can cause misalignments of diacritical marks. I suggest using this script after autohinting.
`--fix-offset`
This script overcomes the GID restictions placed in the font due to use of the OFFSET command. It takes a source font, and a new font, and updates the new font with the appropriate GIDs.
`--makeCVAR`
This script generates a cvar table based on the TSIC table. Under most circumstances, output matches VTT's identically.*
*If you are doing more complex cvar modification, please double check. Most likely more complicated ones will need to go through VTT or varlib.
Additional settings:
`-i` input path of new font (required)
`-s` input path of source VTT font (required for makeCVAR)
`-d` output path (optional: script will export using a default name if not provided)
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