Part 10/15:

Adaptive heuristics—such as measuring pixel change thresholds—allow automated decision-making on whether a small change warrants inserting an I-frame. This balances the need for quality preservation against compression efficiency.

Optimizing I-Frame Placement and Re-encoding Strategies

The expert advises:

• Avoid long intervals between I-frames. If the gap is too large, it risks cumulative quality degradation.

• Re-encoding is costly and lossy but sometimes necessary if the source video has poorly placed I-frames.

• When deciding on re-encoding, consider the cost-benefit: are you sacrificing quality or incurring unnecessary computational expense? Generally, it's better to optimize existing I-frame placement rather than re-encode entire videos unless necessary.