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Version 9028 - h.264 mp4 encodes use only half of the target bitrate.

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    #16
    Thanks for the report Wilson -- it really helps to hear of other people experiencing similar issues.

    I just did another test where I upped the bitrate to 20,000 Kbps instead of 15,000, which I used on the previous rip of the same disc. Here are the results:

    15,000 Kbps target:
    - Average bitrate = 6,756 Kbps
    - Profile = High@L4.0

    20,000 Kbps target:
    - Average bitrate = 6,951 Kbps
    - Profile = Main@L4.0

    As you can see, raising the target bitrate from 15,000 to 20,000 (a 33% increase) resulted in less than a 3% increase to the actual average bitrate -- i.e. it made almost NO difference to the resulting bitrate. The profile, however, actually dropped from High to Main.

    Should the bitrate ALWAYS follow the value set in the encoder settings, or are there situations where the quality of the source can cause the encoder to simply not use the available bitrate?

    Thanks again,

    Larry

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