MPEG1 Audio Layer II vs. AAC which one is better?

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spellkaw
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MPEG1 Audio Layer II vs. AAC which one is better?

Post by spellkaw » Fri Apr 13, 2018 2:16 am

Hello,

do you guys know which one is better suited for Digital TV (DTT) broadcast?
Right now we are using the MPEG1 Audio Layer 2, but they said AAC is much better and we can save more bandwidth with AAC.
Is this true? Are there any direct comparison between the two?

Thanks.

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PID_Stop
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Re: MPEG1 Audio Layer II vs. AAC which one is better?

Post by PID_Stop » Fri Apr 13, 2018 7:20 am

I should think that the audio encoding format you choose depends on where you are located. I infer from your question that you are not in the United States, where the ATSC standard calls for Dolby AC3.

MPEG1 layer 2 (also known as MP2) is somewhat older, is less efficient, and is less flexible -- for instance, AAC supports lossless encoding and multichannel streams in ways that MP2 does not. AAC is more commonly used for digital broadcast (outside of the US), whereas MP2 is the encoding standard for DVDs.

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Sesse
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Re: MPEG1 Audio Layer II vs. AAC which one is better?

Post by Sesse » Thu May 10, 2018 1:24 pm

For the same bitrate, AAC will give you significantly better quality than MP2. It also supports surround, which I believe MP2 commonly does not. (Do note that there's something like six or seven entirely different codecs that are all called AAC, but even LC-AAC is much, much better than MP2.)

But the picture is going to dominate the bitrate anyway…

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