『漫游』酷论坛>『影音数码技术学习交流』>[推荐]quicktime aac 或许 ..

[推荐]quicktime aac 或许比NEROAAC更好更强大

superkidx@2010-09-03 11:14

quicktime aac 命令行编码器
qaac或者qtaacenc (2者差不多 都是调用quicktime编码)
qt lite 4.0.0
http://www.newhua.com/soft/62351.htm
编码器下载
http://u.115.com/file/f6c5e7ec59
http://u.115.com/file/f645f64bb1


随身设备音乐推荐参数
qaac: -V 85 --ignorelength (65大致是128K 90大致是192K)
qtaacenc :--tvbr 85 --ignorelength


个人感觉比nero好些 无论是低码率还是中码率

64K时优势还是比较明显的 有兴趣可以试着比较一下
http://www.megaupload.com/?d=A3VOE9P1


引用
qtaacenc: a command-line QuickTime AAC encoder for Windows
Last modified: 2010/7/25
What is this?

qtaacenc is a command-line utility for Windows to encode audio files with QuickTime AAC encoder. It enables us to access the true VBR encoder which is not available in iTunes.
Requirements

* Windows XP or later (?)
* QuickTime 7.6.5 or later
* Note: older version of QuickTime isn't supported. Please install the latest version. You don't have to install iTunes. VC2008 runtime
will be required on some systems.

How to use

> qtaacenc.exe [options] infile [outfile]

Without any option, qtaacenc encodes the input file in True VBR quality 65. The output file is saved in the current directory.

You can specify the following options:

--cbr bitrate
Encode the input file in CBR mode. Available bitrate range is 16-320kbps(stereo), 8-256kbps(mono).
--abr bitrate
Encode the input file in ABR mode. Available bitrate range is 16-320kbps(stereo), 8-256kbps(mono).
--cvbr bitrate
Encode the input file in Constrained VBR mode. Available bitrate range is 16-320kbps(stereo), 8-256kbps(mono).
--tvbr quality
Encode the input file in True VBR mode. Available quality range is 0-127. [default]
--he
Enable the high efficiency (HE-AAC) encoder. Cannot used with True VBR mode.
--samplerate auto | keep | value
Control the samplerate of the output file.

* auto
* Automatically choose the optimum samplerate according to the bitrate and quality. [default] keep
* Keep the original samplerate (if possible). value
Specify the preferred samplerate in Hz. Allowed values are: 8000, 11250, 12000, 16000, 22050, 24000, 32000, 44100, 48000

--fastest
Choose the profile for the fastest encoding speed (identical to --fast in the current QT AAC encoder).
--fast
Choose the profile focused on the encoding speed.
--normal
Choose the profile with moderate speed and quality.
--high
Choose the profile focused on the encoding quality. [default]
--highest
Choose the profile for the highest encoding quality (identical to --high in the current QT AAC encoder).
--title string
Set the title tag.
--artist string
Set the artist tag.
--album string
Set the album title tag.
--albumartist string
Set the album artist tag.
--genre string
Set the genre tag.
--date string
Set the release date tag.
--composer string
Set the composer tag.
--grouping string
Set the grouping tag.
--comment string
Set the commnet tag.
--track number[/total]
Set the track number tag.
--disc number[/total]
Set the disc number tag.
--compilation
Set the compilation flag.
--ignorelength
Ignore the size of data chunk when encoding from pipe.
--quiet
Do not print the progress.

Pipe Encoding

By passing - as infile, qtaacenc reads the input file from stdin. This is useful when you want to encode the file from other applications using pipe. In this case, the input format should be RIFF WAVE containing linear PCM.
Examples

> qtaacenc.exe --abr 160 foo.wav

Encode foo.wav with ABR 160kbps, and save as foo.m4a in the current directory.

> qtaacenc.exe --tvbr 100 --highest C:foo.wav bar.m4a

Encode C:foo.wav with true VBR quality 100, highest quality profile, and save as bar.m4a in the current directory.
Cooperation with foobar2000

qtaacenc can be used as a custom command-line encoder in foobar2000. See the picture below for the example of configurations.

Any comments or questions are accepted in the thread in Hydrogenaudio. Of course you can directly contact me.
Limitations

* Cannot encode with odd bitrates, like 125kbps [QuickTime-side problem]





引用
qaac is a command line AAC/ALAC encoder using QuickTime API, strongly influenced by http://tmkk.hp.infoseek.co.jp/qtaacenc/.

* Can read WAV, AIFF, AU, RawPCM, FLAC, Wavpack, ALAC. Cuesheet(*.cue) is also supported from version 0.05.
In fact, qaac uses libsndfile, so every PCM format supported by libsndfile is also supported by qaac.
* Encodes as AAC-LC / AAC-HE / ALAC into standard ISO MP4 container.
* As for AAC, ADTS output is also supported from version 0.06.
* As for WAV, AIFF, AU, RawPCM: pipe input is supported.
* As for AIFF, FLAC, Wavpack, ALAC: embedded tags can be automatically pulled (not all).
* Can process multiple input files, wild card can be used.

Download latest version from here. You only have to download qaac-x.xx.zip, if you don't want to compile/browse source codes at all. Of course, you must install the latest Apple QuickTime to run the app.

qaac uses following libraries.

* Apple QuickTime SDK
* libmp4v2 (modified)
* libsndfile
* FLAC
* wavpack
* libid3tag
* GNU getopt (modified)
* boost

Usage: qaac [options] infiles....

"-" as infile means stdin.
In ADTS output mode, "-" as outfile means stdout.

Main options:
-d Output directory, default is cwd
-a, --abr AAC ABR mode / bitrate
-V, --tvbr AAC True VBR mode / quality [0-127]
-v, --cvbr AAC Constrained VBR mode / bitrate
-c, --cbr AAC CBR mode / bitrate
--he HE AAC mode (Can't use TVBR)
-A, --alac ALAC encoding mode
-q, --quality AAC encoding Quality [0-2]
-r, --rate
引用

upyzl@2010-09-03 12:40

貌似quicktime的更好?
从Hydrogenaudio的讨论来看neroaac的编码方式跟qtaacenc的cvbr比较接近

不过QT AAC貌似不能编HEv2?(个人觉得语音和音效之类的还是HEv2好)
引用

superkidx@2010-09-03 13:18

本来已经用了联合立体声削弱了立体声的声场效果 你再PS一下 还原出来的立体声实在太差了
引用

roozhou@2010-09-03 13:20

早就知道这个东西好了,但是最大的缺点就是便携性不够,一定要装iTune。nero的一个exe就够了。
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superkidx@2010-09-03 13:22

不需要iTune啊 只要quicktime就行
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roozhou@2010-09-03 13:26

quicktime也不小了,而且装上了还干扰其他的播放器。
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superkidx@2010-09-03 13:29

请用QT LITE 默认是不装播放器的
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upyzl@2010-09-03 13:29

引用
最初由 superkidx 发布
本来已经用了联合立体声削弱了立体声的声场效果 你再PS一下 还原出来的立体声实在太差了


我没说音乐啊
我只说语音和音效
歌曲之类的当然不能用HEv2(HE的效果都不好)
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superkidx@2010-09-03 13:32

音效是什么?
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upyzl@2010-09-03 13:40

游戏不都分BGM(Background Music) SE(Sound Effects)语音(有的话)的么……
SE就是音效

自己手机上来短信的声音弄的就是各种不同的音效
引用

fansge@2010-09-03 15:08

个人喜欢NEROAAC很小,不用安装随到随用。ctaac和divxaac也可以也支持HEV1和HEV2。
divx aac hd beta 谁给测试一下怎么样http://u.115.com/file/t04532a6a2
引用

roozhou@2010-09-03 20:12

divx用的是mainconcept的编码器,MC的编码器质量很差,不比那个faac好多少。
引用

superkidx@2010-09-03 21:08

引用
最初由 roozhou 发布
divx用的是mainconcept的编码器,MC的编码器质量很差,不比那个faac好多少。


faac 1.28 试过么?
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ki。曲奇@2010-09-03 23:14

最近不就有非官版x264整合了qaac麼?
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superkidx@2010-09-04 01:07

qaac似乎是先转WAV 然后才编码 速度稳定 而qtaacenc 则是实时编码
哪一种比较好呢?
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