MeGUI + Nero AAC

[spyros78]

Hi all,

Apologise if this has been discussed again but a quick search did not produce any answers. I am trying to encode a few videos using the latest meGUI. I will stream the videos online. I want to use h264 and AAC @ 44.1K. I am trying an adaptive mp4 muxer but I always end up with 48K audio.

Could you please help me produce 44.1K audio? Also, is there any website that explains the differences between all these profiles? I don't understand which one I shall use for web streaming.

Many thanks in advance,
sp.

[Sharktooth]

why do you need 44.1k? also the muxer cant change the sampling frequency... if it has been encoded to 48, it will stay 48...
the audio frames are so small you can use any mode (LC/HE/HEv2) for streaming.

[spyros78]

Hi,

Thanks for your reply.

I can see where I confused you. I wasn't expecting the muxer to change the sampling frequency. I understand that this should happen during the ecoding process. Currently it doesn't.

My process is like this:
1. Create d2v project demuxing all tracks
2. Create avs file
3. encode avs and mp2 audio using profiles
4. mux

The reason I need 44.1K is mainly because these are the spec requirements of the project I am currently working on. I'm also trying to make the videos as compatible as possible with QT. Currently I've managed to do this only using the QT profile.

With regards to the audio the only solution I have found so far is to capture the wav with VirtualDubMod and change the sampling frequency using Audacity, then import into MeGUI and encode to AAC but I'm dying to know what I'm doing wrong.

Thanks for your time
Spyros.

[jmartinr]

You can change the sampling frequency in Avisynth itself. That's what I do.

If you put 44.1 into Nero encoder for sure you'll get 44.1 AAC.

[tebasuna51]

My process is like this:
1. Create d2v project demuxing all tracks
2. Create avs file
3. encode avs and mp2 audio using profiles
4. mux
To encode the audio use this avs:

NicMPG123Source("D:\Path\input.mp2")
# Delay()
SSRC(44100)
# Normalize()
Use Delay if you need and Normalize (recommended).

And encode to m4a with MeGUI using all unchecked but:
- Variable Bitrate (0.31 or greater)
- AAC Profile: Automatic