When styling fonts, there is no semi bold; the font, in terms of
boldness, is either bold or not bold.
However, a font itself can be semi bold, such as Adobe Caslon
Pro Semibold, and Garamond Premier Pro Semibold.
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Myriad Pro is a font that is part of the Myriad family. It
differs from the Sans Serif family in that it has a very distinct
slanting 'e' and tail on the 'y'.
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Creators of Myriad ProMyriad Pro is a typeface developed for Adobe Systems by Robert Slimbach, Carol Twombly, Christopher Slye, and Fred Brady in 2000. Myriad Pro is an OpenType version of the original Myriad typeface that was designed by Robert Slimbach and Carol Twombly in 1992.
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It is Myriad Pro
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Adobe Premiere Pro, or VirtualDub if you need something free, can output a PNG sequence from an AVI video.