![]() Distribution codecs are not meant for editing, or storing the “master” image sequence. Videos meant for commercial release or distribution typically use highly compatible but lossy codecs. Lossy encoding in not a perfectly reversible process and doing it will compromise image quality, especially if done successively. In contrast to lossless, lossy encoding discards information present in the image sequence and so it is not possible to extract out the frames perfectly. Editing can include modifying, adding, removing, duplicating frames and treating them as “video clips.” ![]() We can edit “video” frame by frame as an image sequence in image manipulation programs ( Adobe Photoshop, mspaint, GIMP, ImageMagick, waifu2x), or in video editing software ( Adobe Premiere, AviSynth, Sony Vegas). It is possible to decode that video file back to an image sequence for editing purposes and get back the original frames. Frame rates may be constant (CFR) or variable (VFR).Ī series of images in a sequence can be encoded into a single video file with lossless encoding (huffyuv, lagarith, x264 w/crf=0). Frame rate is the frequency at which an imaging device produces unique consecutive images called frames. Video Theory:īy definition, a video is a series of still images which, when shown on screen, creates the illusion of moving images. ![]() The following is a heavily edited version of that post. Disclaimer: Most of following was originally written by thljcl and is available unedited at.
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