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29th October 2011, 04:44 | #41 | Link |
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Sorry I took a long time editing my above post to add command line and didn't see your request, I wouldn't have edited if there had been a reply.
Any ideas for 32 bit audio? I think I just don't know how to get raw 32 bit out of eac3to. Sorry I think my issue is with the wrong tool for this thread. Last edited by Asmodian; 29th October 2011 at 05:50. |
29th October 2011, 13:02 | #42 | Link |
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Maybe with:
eac3to.exe in.mp2 stdout.wav | qaac.exe -o out.m4a --tvbr 127 --ignorelength - 24 bits (default for eac3to) is enough for a mp2 source.
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BeHappy, AviSynth audio transcoder. Last edited by tebasuna51; 29th October 2011 at 13:04. |
26th March 2013, 21:11 | #44 | Link | |
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Average bitrate -vs- Constrained Variable bitrate
Can anyone explain to me what is the difference between --abr and --cvbr modes when encoding at the same target bitrate, 80kbps for instance?
I know that both output files will have ~80kbps variable bitrate so what would be the reason to pick one in favor of the other mode? Does ABR allow bigger fluctuations of actual bitrate throughout the file? Does CVBR mode apply narrow bitrate limits in which the average (desired) bitrate can fluctuate? ==EDIT== Found this Technical Note TN2237 where different encoding strategies are explained in detail: Quote:
Last edited by kypec; 26th March 2013 at 21:33. |
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8th September 2014, 10:37 | #45 | Link |
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Why is 2 the highest quality?
Usually Other encoders use lower values for high quality and higher value for lower quality neh! Like Lame, x264, x265, Xvid etc... If I did not see this, without knowing I was going to use -q 0 |
8th September 2014, 11:31 | #46 | Link |
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Because Apple set it that way. Qaac only follows what Apple Coreaudio uses. And you shouldn't really change default values if you don't know what those values mean or you didn't read manual, right?
BTW, with x264/5, Xvid ect... only CRF/QP scale uses lower values for higher quality. Every other setting uses higher value for higher quality (me, subme). |
8th September 2014, 22:14 | #47 | Link | |
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Quote:
in x264 etc most of those things u mention related to number or number range, not quality, so it is being literal... |
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8th September 2014, 22:21 | #49 | Link |
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What application gave you that information?
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8th September 2014, 22:25 | #50 | Link |
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MediaInfo, probably. We had a discussion about that recently:
http://www.hydrogenaud.io/forums/ind...dpost&p=867076 |
12th September 2014, 19:12 | #52 | Link | |
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Quote:
--chanmap 2,1 |
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13th September 2014, 09:31 | #54 | Link | |
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Quote:
As I know last NeroAACEncoder is released in 2009. And no need of a nero package... unlike QAAC, single EXE can be downloaded and no extra setup is needed in NeroAACEnc. Nero used to give that exe, but not anymore I think... But easily downloadable from many other websites... QAAC would be better, but not fro the reasons you mentioned |
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16th October 2014, 14:21 | #56 | Link |
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Quality 96 !!!
Did a QAAC encode using MeGUI. HE-AAC CVBR.
mediainfo shows this Code:
Writing application : qaac 2.44, CoreAudioToolbox 7.9.8.3, AAC-HE Encoder, CVBR 40kbps, Quality 96 What are the other values of this quality? I know that there is a --quality switch that has 0,1,2 values.. Is this related to it?... probably not... any switch related to this quality? |
22nd May 2015, 17:13 | #57 | Link |
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qaac 2.49
Reminder: Apple was a winner (highest audible quality) amongst AAC encoders according to blind tests. http://listening-tests.hydrogenaud.i...96-a/index.htm
qaac 2.49 Changelog: Code:
[qaac] release 2.49 posted 2 hours ago by nu 774 Fixed issues on MP4Source: Fixed handling of Nero style chapters starting from non-zero timestamp (typically inserted by fb2k and old neroaacenc). Fixed handling of reading MP4 files with multiple elst entries. [qaac] release 2.48 (refalac 1.48) posted 10 hours ago by nu 774 Fixed an issue on MP4Source: trailing samples were discarded under certain conditions. [qaac] release 2.47 (refalac 1.47) posted 58 minutes ago by nu 774 Large file (>= 4GB) output is now supported. Very long duration (beyond 32bit limit) is also supported, but the latter is not compatible with QuickTime 7. On very large files, container optimization can take several minutes. You can disable it by --no-optimize. [qaac] release 2.46 (refalac 1.46) posted an hour ago by nu 774 Fixed an issue on DLL loading: when a DLL qaac tries to load depends on other missing DLLs, OS was showing a modal dialog which effectively stopped the process until it is closed. Allow -A option for refalac to be compatible with qaac. [qaac] release 2.45 (refalac 1.45) posted 40 minutes ago by nu 774 Added qaac64.exe that works with iTunes 64bit (ver 12.1). Switched to static C runtime linking. Now you don't need msvcr120.dll and msvcp120.dll anymore. Minor bug fixes. Last edited by IgorC; 22nd May 2015 at 17:15. |
22nd May 2015, 21:08 | #58 | Link |
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Great to see qaac updated, it is an excellent tool and I use it regularly.
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24th May 2015, 11:46 | #60 | Link | |
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Quote:
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