| Figure 1: Single Pass “H.264 for iPod” at default settings as per those on page 15, except for the Option of Multi-pass being turned off.
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Figure 2: Multi-pass H.264 at default settings as per those on page 15.
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Figure 3: With the Gorilla movie, there was no noticeable difference between the single and multi-pass. This is because this footage has fairly constant amount of action so allocating bits from parts with lower motion to parts with higher motion gives no payback.
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| Figure 4: After applying the recommended gamma and crop settings, the Gorilla footage looks like this. Some of the irrelevant edge content has been removed, and the image has better grayscale values, noticeable around Ethan’s head.
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Figure 5: The same frame of the Bikes movies with the recommended crop applied, and Gamma set to .9, with Multi-pass and the data rate at the default setting. A bonus advantage for cropping here is that we’ve lost the excess blanking at the sides of the image, common in less expensive cameras. 591 KB |
Figure 6: The same frame, as Figure 5, with the same crop and Gamma setting (.9), but with the data rate restricted to 300 Kbit/sec for the video. (It actually averages 302 Kbits/sec for the video, which is close enough).
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