Using good ol' ISO specs (or written specs in general) is such a fun game to play. What the spec says and what hardware/software actually do are not always the same. I worked on a project for a TV manufacturer that provided us the specs for what their chips in their new TV could do. Naturally, we pushed the encoding to the limits of the specs at first, and then had to start dialing things back to what was actually happening. If the spec says max bitrate of Xmpbs, it turns out that it was closer to .85Xmpbs to get decent playback. Or a cable provider's new digital STB that couldn't handle large changes in VBV even thought it was "within spec"
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Using good ol' ISO specs (or written specs in general) is such a fun game to play. What the spec says and what hardware/software actually do are not always the same. I worked on a project for a TV manufacturer that provided us the specs for what their chips in their new TV could do. Naturally, we pushed the encoding to the limits of the specs at first, and then had to start dialing things back to what was actually happening. If the spec says max bitrate of Xmpbs, it turns out that it was closer to .85Xmpbs to get decent playback. Or a cable provider's new digital STB that couldn't handle large changes in VBV even thought it was "within spec"