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27th July 2009, 19:59 | #9141 | Link | |
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If you've already demuxed the audio you need to specify the source speed too, like... Code:
eac3to.exe input output -24.000 -changeTo23.976 |
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28th July 2009, 02:06 | #9145 | Link |
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I rencently converted a 25fps DTS-HD MA to 24fps LPCM. The source was 16 bit, the output LPCM was 24 bit. I did not use any extra parameters, except the "-changeto" switch.
I'd just like to understand why it went from 16 bit DTS-HD MA to 24 bit LPCM. If anybody could explain that would be great. Here's an image of the process... sorry couldn't wait for the log file, on my way to work... EDIT: Oh yeah, I first tried converting to w64. It produced a 16 bit LPCM, but couldn't mux with tsMuxeR, got several sync errors, I used the same convert switch. So I decided to try converting to PCM, everything muxes fine... and here I am. Thanks. Last edited by odin24; 28th July 2009 at 02:09. |
28th July 2009, 08:00 | #9146 | Link | ||
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I recommend you convert to ac3 640 Kb/s because you can't preserve the lossless quality. Quote:
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28th July 2009, 09:16 | #9147 | Link | |
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So, when stretching, or shortening the time it is considered lossy and the LPCM track will not equal the source DTS-HD MA... will it even be close? Wouldn't the LPCM still be better than AC3 @ 640k? Thanks for your response. |
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28th July 2009, 12:18 | #9148 | Link | |||
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28th July 2009, 17:17 | #9149 | Link | |
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If you find the resulting PCM file too large, I would recommend to reduce the word length back to 16 bits (-down16 in eac3to) and then use a lossless compression such as FLAC. Lossy encoding e.g. to AC3 is a much more severe manipulation of the signal. |
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28th July 2009, 22:48 | #9150 | Link |
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I wonder, does eac3to recognize AC3 4.0 channels correctly as such? what does 4.0 mean, 2 front and 2 rear channels? because eac3to recognized it as 3.1 so there might be a difference? its from an old movie and unfortunately I don't know whether its really supposed to be 2 front 2 rear.
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29th July 2009, 00:19 | #9151 | Link | |
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AC3, 2/2 channels (FL,FR,BL,BR) AC3, 3/1 channels (FL,FR,FC,BC) AC3, 2/1.1 channels (FL,FR,LF,BC) AC3, 3.1 channels (FL,FR,FC,LF) for more info see this post: http://forum.doom9.org/showthread.ph...10#post1134710
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30th July 2009, 14:15 | #9153 | Link |
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Hi
Anyone to help me use SurCode DVD DTS Encoder alone (ie outside of eac3to) in Command Line mode? I would like to batch convert the 6 wav files I create with eac3to into one DTSWAV file using a script instead of the Surcode GUI. An example of the script to use would be most welcome to automate the process of creating DTS audio CDs from my 5.1 DVDs. Thanks for your help. Cheers |
30th July 2009, 20:13 | #9154 | Link |
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am I going nuts, or do DTSHD(MA and HR)>FLAC conversions always end up w/ the dialogs center channel being too low?
TrueHD or LPCM>FLAC is perfectly fine(same dialogs volume as core DTS), and I've tried both Sonic 4.3 and Arcsoft(they give identical CRC btw). I've encountered this problem many times, DTSHD>FLAC is unusable for me...I use ffdshow to decode if that means anything(DRC is disabled). I've also tried to enable -keepDialnorm in eac3to, but it doesn't chance anything(same CRC for the FLAC). Last edited by leeperry; 30th July 2009 at 20:15. |
30th July 2009, 20:36 | #9156 | Link | |
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yep, center is still too low compared to the core DTS...even w/ madflac.
this time it was a DTS HR 24bit track that I'm downsampling to 16 : Quote:
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30th July 2009, 23:41 | #9157 | Link | |
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Core dtshd --------------- ------------------ -------------------- RMS power ch0: 3.21% (-29.88 dB) 3.40% (-29.37 dB) RMS power ch1: 2.82% (-30.99 dB) 2.99% (-30.49 dB) RMS power ch2: 4.93% (-26.15 dB) 5.22% (-25.64 dB) RMS power ch3: 1.59% (-35.96 dB) 1.86% (-34.61 dB) RMS power ch4: 0.88% (-41.11 dB) 0.93% (-40.60 dB) RMS power ch5: 0.69% (-43.22 dB) 0.73% (-42.72 dB)
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31st July 2009, 00:16 | #9158 | Link |
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ok, thanks for the test...I was hoping for some measurements...how did you do that? you're comparing the FLAC'ed DTS-HD against the core DTS?
I've already had the problems many times on DTS HD tracks for instance on this stream "DTS Master Audio, 5.1 channels, 24 bits, 48khz"(core: DTS, 5.1 channels, 24 bits, 1509kbps, 48khz), the dialogs were hardly audible, where they were perfectly fine on the core...and -keepDialnorm doesn't work(maybe by design?) Last edited by leeperry; 31st July 2009 at 02:20. |
31st July 2009, 00:54 | #9159 | Link |
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^If you upload a sample, they may be able to help.
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31st July 2009, 02:10 | #9160 | Link | ||
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