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25th February 2009, 06:23 | #8382 | Link | |
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When I run "eac3to -test", one of the things I keep seeing is:
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25th February 2009, 08:57 | #8384 | Link | ||
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Now virtually all movie and TV sources are encoded to video levels. So the flag should always be turned off. However, some broadcasters (especially some European HDTV broadcasters) have this flag accidently set. Now the sat/cable receiver decoders usually ignore this flag, so the problem doesn't show. But if you play such a stream on e.g. an NMT media player, you'll get wrong black/white level, because the NMT actually honors the flag. eac3to checks if the flag is set and complains, because the thread is normally supposed to be not set. eac3to can remove it, and even does so by default. If you have a stream where the flag actually needs to be set, you can tell eac3to not to remove it. But I've yet to see such a stream... |
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25th February 2009, 11:39 | #8386 | Link | |
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25th February 2009, 15:56 | #8387 | Link | |
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Not sure how many different ways there are to do this but I used Attribute Changer iirc. |
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25th February 2009, 17:34 | #8388 | Link |
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madshi, I feel kind of picky reporting this but anyway, I think I've found a very, very minor bug. If I run...
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eac3to.exe 1.eac3 1.dts -core I've tried it with a few eac3 files (all from HDDVD) and it always crashes, so you should be able to replicate it (unless it's a problem with my pc). Let me know though if you want a sample, bug report, etc. |
25th February 2009, 17:46 | #8389 | Link |
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There appears to be a problem converting RAW/PCM 3.0 (Vicky Cristina Barcelona) to WAV. The center channel ends up being tagged as LFE. eac3to does correctly identify it (although PowerDVD identifies it as LPCM 3.0) but then doesn't seem to handle it as such.
Using -down2 also seems to have a similar problem and apparently throws away what it thinks is the LFE channel. Last edited by jmonier; 25th February 2009 at 17:49. |
26th February 2009, 07:00 | #8390 | Link |
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madshi,
Thanks for your tool, it works incredibly well. I'd like to ask (and you would seem to be the best person to answer this) -- why is it that Dolby Digital Plus (.eac3) tracks from HD-DVD cannot be muxed to Blu-Ray and played on a Blu-Ray player? Is there that much of a fundamental difference between the .eac3 used on HD-DVD and what should/could be used on BD? I own several HD-DVDs and would like to (in some instances) use the HD-DVD .eac3 track directly on a BD back-up, but I've never been able to get it to work. I always have to change the audio to something else (DTS, PCM, or standard AC3).
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26th February 2009, 11:59 | #8392 | Link | |
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p.s. "DVD-Audio Explorer" also supports "SMART" (System Managed Audio Resource Technique) for DVD-Audio: http://patches.sonic.com/pdf/white-p..._dvd_audio.pdf Last edited by xkodi; 26th February 2009 at 12:18. |
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26th February 2009, 22:53 | #8393 | Link | |
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I wonder whether a dual-format player might have better luck, though? I don't know how separate the HD DVD/BD sides are to these things. |
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26th February 2009, 23:40 | #8394 | Link | |
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No other audio codec for the two formats is different. AC3 is interchangeable, as is all flavors of DTS, PCM, and even TrueHD. (The one small difference on TrueHD is that on HD-DVD, TrueHD can exist without a lossy AC3 core because HD-DVD has TrueHD as a mandatory-support codec, whereas on Blu-Ray, TrueHD is an optional-support codec, and therefore the lossy AC3 core is required). Why would only DD+ be so fundamentally different that it would be the only audio codec that's not at all interchangeable? I'm just looking for a bit more insight and explanation than "they're too different", because I'm not sure I can believe that. Perhaps it's just a question that we don't know enough about the specifications of the format on Blu-Ray (I believe there's only one commercial Blu-Ray disc that uses DD+), or some other knowledge-block that would prevent us from currently being able to do it. But I highly doubt that the two incarnations of DD+ are just fundamentally different.
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27th February 2009, 01:03 | #8395 | Link |
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My Sony S350 BD player is supposed to do DD+. I have done HD DVD to Blu Ray and kept the DD+. I can't actually play DD+, but it comes out as standard DD ok. I can't imagine why it wouldn't come out as DD+ if I had the capability.
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27th February 2009, 03:30 | #8397 | Link |
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Latest version of dtsdecoder.dll is 1.1.0
Latest version of asaudiohd.ax is from 2/5/2008. (I'm not sure what eac3to looks for) Both come with the latest version of tmt, which can be updated for for free with any modern version. Unfortunately, it doesn't seem to work for some people. I still can't get it to work on Vista64; see my post @ the bottom of this thread: http://forum.doom9.org/showthread.php?t=139946&page=2
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27th February 2009, 05:43 | #8398 | Link | ||
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I think it's just another historical gift of the format war. Clearly the BD group wanted the studios to include legacy audio so the core+extension or interleaved codecs made sense, Toshiba had control over playback so didn't mind all-new codecs with internal decoding. Dolby developed a lossy codec for each format and called them both DD+. I'm not saying that they've got nothing in common, but I don't think we can assume they can be easily interchanged. That said, it's entirely possible that all or most DD+ decoders are in fact capable of decoding both kinds of DD+ but the tools we're using do something bad to DD+ like they have with TrueHD for so long. (eg tsMuxeR flags DD+ as AC3, which can't help). So I definitely think it's worth investigating that. Last edited by peterjcat; 27th February 2009 at 05:56. |
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27th February 2009, 16:24 | #8399 | Link |
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what does the message mean which eac3to sometimes gives with some captures "this video track contains the (probably incorrect) 'full range' flag" and what does eac3to do then by default (or how can I see what eac3to does by default and if this is correct?)
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27th February 2009, 17:56 | #8400 | Link |
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If HD DVD has no AC3 core, then why would the HD DVD to Blu Ray I did come out as AC3 5.1? It also comes out as AC3 5.1 when I play the EVO files from the pc through the same amp. I am using the original DD+ audio from the HD DVD's and muxed with TsMuxer to make a BD.
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