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Some AC3 Questions
1. Is Dolby 2.0/AC3 an Apple proprietary format or is it a universal format that could be encoded from other programs, such as possibly Squeeze, Cleaner, etc.?
2. What types of projects would it be appropriate to encode audio as AAC from Compressor? Is this format intended for web delivery? I am guessing it is lower quality than AC3, and will result in even smaller file sizes than AC3?
Thank you.
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1 Reply
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[rick.pearl] “1. Is Dolby 2.0/AC3 an Apple proprietary format or is it a universal format that could be encoded from other programs, such as possibly Squeeze, Cleaner, etc.?”
It is not Apple proprietary. It is owned by Dolby and licenced to others. I’m sure there are other programs that can encode AC3, but I’ve only ever used Apple software.
[rick.pearl] “2. What types of projects would it be appropriate to encode audio as AAC from Compressor? Is this format intended for web delivery? I am guessing it is lower quality than AC3, and will result in even smaller file sizes than AC3?”
My understanding it that AAC is the audio side of H.264. In the past, it has been used for web based delivery. I’m not sure if it is used in HD disc formats (HDDVD or Blu-ray). I’ve never compared bit rates/file sizes of AAC to AC3 because one is for web and the other is for DVD.
-Russ
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