Note that this is not the normal definition of font size, and that it does not use the width at all.Īs a result, the script resolution can not be used to adjust the aspect ratio of the subtitles for anamorphic video.īorder sizes, shadow distance and blur strength: these can be in either script resolution or video resolution pixels. There are several categories of things which are affected by the script resolution:Ībsolute coordinates (margins, \pos, \move, \clip, vector drawings): all absolute coordinates are in script resolution pixels and work sensibly.įont sizes: the font size in ASS is the line height in script resolution pixels. However, if you’re just creating simple styled subtitles, you normally should not have to worry about this. If you are releasing a single subtitles file with multiple videos of different resolutions, the Resolution Resampler can be used to convert a single file to each video resolution. Unfortunately, due to some bugs in the reference implementation of the subtitle format (VSFilter), rendering subtitles whose script resolution is not equal to the actual video resolution works poorly.īecause the behavior of mismatched script and video resolutions can be confusing, we recommend keeping them the same when doing any complex styling. This is achieved by using a virtual video resolution which controls how font sizes and coordinates are interpreted, which is commonly known as the “script resolution”. ASS subtitle files are, to some extent, video independant and can be used with video files other than the one they were created with.
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