On the 24th frame the bird is on the right end of the image. Imagine these 24 images being played in sequence fast enough and it looks like a bird would fly from left to right to the human eye. Say we have a keyframe with a bird before a cloudy sky. To bring back the spatial information from the MPEG stream you have to apply the iDCT, that is, the Inverse Discrete Cosine Transform, that undoes the DCT that was used during encoding. For more info please refer to a university-level book about DSP, communication systems or similar.
Wavelets are an alternative basis space.
You will NOT get those weird JPEG halos if you use wavelets Interleaving Imagine gluing together the audio and the video track at defined points, that's about it. The inverse of Telecine . This process is performed to extract the original 24fps of a 29.97fps source. Keyframe A complete frame but heavily compressed. MPEG MPEG means Motion Picture Expert Group and it's THE resource for video formats in general.