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29th March 2014, 17:55 | #12641 | Link |
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Some other advantages to the way makmkv converts DTS-HDMA:
Advantage of eac3to:
Last edited by Bigmango; 2nd April 2014 at 19:00. |
20th April 2014, 11:23 | #12643 | Link | |
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You can use SSRC with AviSynth to do the same job, but not all conversions can be done, read http://avisynth.nl/index.php/SSRC
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22nd April 2014, 01:54 | #12644 | Link |
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I'm trying some DTS-ES files to FLAC with eac3to. I'm using Arcsoft and everything. The .dts files have been demuxed properly from the DVD (they show up as ES in MediaInfo), but when I'm using the "convert to flac" command, the files, though 6.1, sound distorted and slowed down.
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22nd April 2014, 06:27 | #12645 | Link | |
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22nd April 2014, 09:22 | #12646 | Link |
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When I convert DTS 5.1 to AC3 with eac3to v3.27 (using the ArcSoft DTS decoder v1.1.0.0), the conversion is extremely slow: around 15 minutes to convert an input file of 1:16:00. Is it normal, or should I try to re-install eac3to or the ArcSoft decoder? Is it something I can do to boost the conversion?
Code:
> eac3to.exe Fra.dts Fra.ac3 -640 DTS, 5.1 channels, 1:15:53, 1509kbps, 48kHz Decoding with ArcSoft DTS Decoder... Remapping channels... Encoding AC3 <640kbps> with libAften... Creating file "Fra.ac3"... The last DTS frame is incomplete and thus gets skipped. eac3to processing took 15 minutes, 3 seconds. Done.
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22nd April 2014, 09:31 | #12647 | Link |
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I'd check Task Manager to make sure that the eac3to process is running as fast as it can. Have you tested decoding to WAV, is it as slow?
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22nd April 2014, 10:11 | #12648 | Link |
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Thanks.
Nothing wrong in task manager. eac3to uses only one CPU core. It's a pity, but afaik it's normal. I just did a conversion to WAV. The process took exactly the same time: 15 minutes, 5 seconds. So, it appears that it's the decoding process that is damn slow. I will try to uninstall the ArcSoft decoder, to see if the default DTS decoder (which one is it?) is faster...
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22nd April 2014, 10:18 | #12649 | Link | |
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Encoding to AC3 with libaften should be multi-threaded (I think). |
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22nd April 2014, 10:19 | #12650 | Link |
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The ArcSoft DTS decoder is pretty slow - and it's single threaded. eac3to itself tries to process multi-threaded, as far as possible. But if the main decoder is single threaded that's the bottleneck and there's not much eac3to can do about it. No need to uninstall ArcSoft, try "-libav", that will use libav for decoding and process quite a bit faster (but also single threaded). But of course the ArcSoft decoder is using DTS reference code, so it might be "better" than libav. Or maybe not, who knows...
Edit: Cross-post, Groucho2004 was faster... |
22nd April 2014, 10:31 | #12652 | Link |
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Thanks everybody! That confirms that it's Arcsoft the culprit. I'll try with -libav. Thanks for the tip!
I'm not a specialist in audio decoding, but I wonder why ArcSoft is supposed to give better results than Libav. IMO, any decoder should give the same result, regardless of the techniques it uses. It's only when encoding that it is important to use a good encoder. Or am I wrong? What's the benefit of using "DTS reference code"? Sorry for that newbie questions.
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22nd April 2014, 11:21 | #12655 | Link | |
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22nd April 2014, 12:45 | #12656 | Link | ||
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@Richard1485: Quote:
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22nd April 2014, 14:27 | #12657 | Link |
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@r0lZ
What are you talking about? The post that you quoted refers to using libav as a decoder, not an encoder. That keeps the dialnorm of an AC-3 track when extracting. It does not give the user the ability to set dialnorm (let alone a DRC profile) when encoding. |
22nd April 2014, 14:37 | #12658 | Link |
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Oops, mismatch! Sorry.
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23rd April 2014, 01:55 | #12660 | Link |
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Anyone knows how can I decode DTSWAV CD's that contain DTS-ES 6.1 audio? Can I do it somehow with Arcsoft and eac3to? MediaInfo cannot detect the sixth channel, reading it as regular DTS 5.1 (though it reads DTS-ES files from DVD's normally).
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