用eac3to把一个TrueHD无损音轨提取wavs，操作后有下面的提示，我看不明白，原始的音轨是24...

xishan

请教大神：
我用eac3to把一个TrueHD无损音轨提取wavs，操作后有下面的提示，我看不明白，原始的音轨是24 bits还是16 bits的呢？

C:\Eac3to>eac3to j.thd j.wavs
TrueHD/AC3, 5.1 channels, 48kHz
(embedded: AC3, 5.1 channels, 448kbps, 48kHz)
Extracting TrueHD stream...
Decoding with libav/ffmpeg...
Writing WAVs...
Creating file "j.L.wav"...
Creating file "j.C.wav"...
Creating file "j.LFE.wav"...
Creating file "j.R.wav"...
Creating file "j.SR.wav"...
Creating file "j.SL.wav"...
-------------------------------------------------------------------------------[truehd @ 024d3180] End of stream indicated.
The original audio track has a constant bit depth of 16 bits.
Superfluous zero bytes detected, will be stripped in 2nd pass.
Starting 2nd pass...
Extracting TrueHD stream...
Decoding with libav/ffmpeg...
Reducing depth from 24 to 16 bits...
Writing WAVs...
Creating file "j.L.wav"...
Creating file "j.C.wav"...
Creating file "j.R.wav"...
Creating file "j.LFE.wav"...
Creating file "j.SL.wav"...
Creating file "j.SR.wav"...
-------------------------------------------------------------------------------[truehd @ 024d3180] End of stream indicated.
The processed audio track has a constant bit depth of 16 bits.
eac3to processing took 15 minutes, 5 seconds.

efreebird

随便点个视频 , 用pot加载这个音轨不就tab可以显示出来了吗

xishan

efreebird 发表于 19-12-30 11:58
随便点个视频 , 用pot加载这个音轨不就tab可以显示出来了吗

DTS-HD可以看出，TrueHD是看不出来的

gumfifa

The original audio track has a constant bit depth of 16 bits.
16bit吧

djhdjh2000

MediaInfo_GUI_19.09_Windows 用这个看吧

xishan

gumfifa 发表于 19-12-30 14:44
The original audio track has a constant bit depth of 16 bits.
16bit吧

应该是16bits

xishan

djhdjh2000 发表于 19-12-30 17:21
MediaInfo_GUI_19.09_Windows 用这个看吧

多谢，这个软件我有，TureHD是看不出位深的。据说用TureHD的官方合成软件才能直接查到。

hatsukoi

以前遇到过标了24实际上是16的音轨被eac3to拉到16的，反正eac3to不会做多余的事情的
顺便看位深可以参考BDInfo

古墓雷神

原音轨是24BIT的，你在解开时的命令行用了-down16的设置，所以出来的WAVS就变成了16BIT

xishan

古墓雷神 发表于 19-12-30 21:58
原音轨是24BIT的，你在解开时的命令行用了-down16的设置，所以出来的WAVS就变成了16BIT ...

大神，我没有用多余的参数 ，就是：eac3to j.thd j.wavs。请问怎么默认是-down16呢，用什么参数可以是原来音轨的24BIT的呢？

古墓雷神

xishan 发表于 19-12-31 09:51
大神，我没有用多余的参数 ，就是：eac3to j.thd j.wavs。请问怎么默认是-down16呢，用什么参数可以是原 ...

eac3to d:\j.thd d:\j.wavs -down24

xishan

古墓雷神 发表于 19-12-31 10:20
eac3to d:\j.thd d:\j.wavs -down24

多谢大师指点，我是看解开后的窗口提示里面有”The original audio track has a constant bit depth of 16 bits.“理解为原始的是16位的位深了。

xishan

古墓雷神 发表于 19-12-31 10:20
eac3to d:\j.thd d:\j.wavs -down24

大神，看提示，好像还是16位的，是不是系统没有装什么解码器之类的呢？

ac3to v3.31
command line: eac3to  j.thd j.wavs -down24
------------------------------------------------------------------------------
TrueHD/AC3, 5.1 channels, 48kHz
(embedded: AC3, 5.1 channels, 448kbps, 48kHz)
Extracting TrueHD stream...
Decoding with libav/ffmpeg...
Writing WAVs...
Creating file "j.L.wav"...
Creating file "j.R.wav"...
Creating file "j.LFE.wav"...
Creating file "j.C.wav"...
Creating file "j.SL.wav"...
Creating file "j.SR.wav"...
The original audio track has a constant bit depth of 16 bits.
The processed audio track has a constant bit depth of 16 bits.
Superfluous zero bytes detected, will be stripped in 2nd pass.
Starting 2nd pass...
Extracting TrueHD stream...
Decoding with libav/ffmpeg...
Reducing depth from 24 to 16 bits...
Writing WAVs...
Creating file "j.C.wav"...
Creating file "j.L.wav"...
Creating file "j.R.wav"...
Creating file "j.LFE.wav"...
Creating file "j.SR.wav"...
Creating file "j.SL.wav"...
The processed audio track has a constant bit depth of 16 bits.
eac3to processing took 16 minutes, 2 seconds.
Done.

sam_c

这个eac3to 确实会把24位降到16位的

bigriver

原来就是16bit。
TCT真的很好用。

羲.雅

在论坛学的就是TCT，今天才知道还有这个软件可以的