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Getting ready to transcode library to AAC
Eli
post Jan 18 2013, 14:59
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I am getting ready to transcode my ~2TB flac library to AAC-LC in an MP4 container and want to be sure I get it right.

My intention is to encode at ~96kbps TVBR with QAAC. The goal is for portability and streaming, and this seems to be a good quality level that will give reasonable listening (I still have the lossless archive).

Is TVBR widely supported? I know many years ago when I used to encode to LAME MP3 VBR ipods had a hard time with it.



I need to pick the right tool for transcoding and have some specific tasks that I want to achieve and can hopefully achieve all of them in one transcode step.

- Scale down album art automatically. Probably to <50kb and 500x500. Is this still to big?
--- 90+% of my albums have embedded and folder.jpg, a minority have one or the other. If they differ, I would like to scale down from the higher resolution one.

- Identify HDCD tracks, and encode to 24b on the fly

- Identify pre-emph files and de-emph

- Apply EBU R128 ReplayGain ( I still need to calculate EBU R128 ReplayGain values for my flac files)

Is there a tool that can do all of these?

This post has been edited by Eli: Jan 18 2013, 15:18


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IgorC
post Jan 18 2013, 15:23
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CVBR prevents the situations where bitrate goes too low. CVBR is actually on par with TVBR (if not better).

The word "true" doesn't imply better VBR.

This post has been edited by IgorC: Jan 18 2013, 15:32
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Eli
post Jan 18 2013, 15:44
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QUOTE (IgorC @ Jan 18 2013, 09:23) *
CVBR prevents the situations where bitrate goes too low. CVBR is actually on par with TVBR (if not better).

The word "true" doesn't imply better VBR.



I guess the idea is that TVBR can adjust to what is required and is more optimized. If the bitrate goes too low then TVBR has not been optimized in the encoder. I will look at CVBR more closely.


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