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IDProjectCategoryView StatusLast Update
0006289MMW v4Codecpublic2022-04-29 01:15
Reporterpeke Assigned To 
PrioritynoneSeverityfeatureReproducibilityN/A
Status closedResolutionno change required 
Target Version4.0 
Summary0006289: WMA Codec: VBR 2-Pass options Ecoding Missing
DescriptionBased on my testing after user reports I've found that EAC support several 2-pass encoding as found in WMCmd.vbs
---
0: 1-pass CBR (default)
1: 2-pass CBR
2: Quality-based VBR
3: Bit rate-based VBR (two-pass)
4: Bit rate-based peak VBR (two-pass)
---

Explanation of VBR 2-Pass can be found here
http://en.wikipedia.org/wiki/Variable_bitrate#Multi-pass_encoding_and_single-pass_encoding
Tagstodoc-help
Fixed in build

Relationships

duplicate of 0006288 resolvedmichal Two-pass encoding to WMA should apply to VBR, too 

Activities

peke

2010-03-04 03:21

developer   ~0020046

According to Jiri I reassign this to you.

michal

2010-04-13 12:07

developer   ~0020098

I've made investigation and we support all the WMA codecs offer. According to available formats here - http://msdn.microsoft.com/en-us/library/dd743321%28VS.85%29.aspx - we have:
1-pass CBR
2-pass CBR
VBR - it corresponds to Quality-based VBR
ABR - it corresponds to both - Bit rate-based VBR (two-pass, when maximum bitrate is not selected) or Bit rate-based peak VBR (two-pass, when maximum bitrate is selected)

So 2-pass VBR is "hidden" in ABR selection.

michal

2010-04-13 12:09

developer   ~0020099

Resolving, no change required.

peke

2010-04-13 22:03

developer   ~0020101

Assigning to Rusty for stating this in Online help and DOCS.