Which file formats cannot store transparency in a graphic that will be used in a title?

Which file formats cannot store transparency in a graphic that will be used in a title?

• A. Png
• B. Gif
• C. Tiff
• D. jpeg

Answer: (D)

This question is about whether a file format can carry an alpha channel, which is what allows transparency in a graphic used over video. For titles, you want the image to let the video underneath show through in areas that aren’t solid. Per-pixel transparency is supported by formats like PNG, which includes an alpha channel for every pixel. TIFF can also carry an alpha channel in many workflows, so it can preserve transparent areas. GIF supports transparency, but it’s limited to marking a single color as fully transparent—there’s no gradual or per-pixel alpha, which makes edges look less smooth and isn’t suitable for detailed titles. JPEG, on the other hand, does not store any transparency information at all; it only saves color data, so the background cannot be transparent and will always appear opaque when composited with video. So the format that cannot store transparency is the one that lacks an alpha channel entirely, making it unsuitable for title graphics that need to show video behind them.

This question is about whether a file format can carry an alpha channel, which is what allows transparency in a graphic used over video. For titles, you want the image to let the video underneath show through in areas that aren’t solid.

Per-pixel transparency is supported by formats like PNG, which includes an alpha channel for every pixel. TIFF can also carry an alpha channel in many workflows, so it can preserve transparent areas. GIF supports transparency, but it’s limited to marking a single color as fully transparent—there’s no gradual or per-pixel alpha, which makes edges look less smooth and isn’t suitable for detailed titles. JPEG, on the other hand, does not store any transparency information at all; it only saves color data, so the background cannot be transparent and will always appear opaque when composited with video.

So the format that cannot store transparency is the one that lacks an alpha channel entirely, making it unsuitable for title graphics that need to show video behind them.