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3rd January 2013, 16:37 | #12002 | Link |
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Dolby ProLogic is an analog technology. It analyzes phase directions and delays in signals as electrical voltage fluctuations, not as bits and bytes.
There is no technical relation between Dolby ProLogic (analog surround sound mixing) and Dolby Digital (digital audio compression), except for the same company which developed them. A third different, unrelated technology developed by the Dolby Labs are noise reduction techniques for audio on magnetical tapes. And a fourth, even more unrelated remark: Thomas Dolby made a song about Science! But his stage name was only inspired by the noise reduction techniques, he was not a member of Dolby Labs... Last edited by LigH; 3rd January 2013 at 16:50. |
3rd January 2013, 17:18 | #12003 | Link | |
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3rd January 2013, 17:22 | #12004 | Link | |
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The decoder author responded in the thread. The problem is that the results in that thread are based on the libav decoder as it was more than a year and a half ago. Which is why madshi asked if those results were even still relevant.
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3rd January 2013, 19:05 | #12006 | Link | ||
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3rd January 2013, 23:02 | #12007 | Link |
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thanks for the update!
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4th January 2013, 09:55 | #12008 | Link | |
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Also, if I downmix DTS tracks, should I use the "phaseshift" option or does the downmix algorithm take care of that? How can I even determine if the back channels have a phase shift? |
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4th January 2013, 12:17 | #12009 | Link | ||
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A correct 5.1, no matter if is AC3 or DTS, must have surround channels already "phaseshifted" over same info in front channels, by soft or when are recorded with microphones at different places, if you do a new "phaseshift" you can finish with 180º than convert the mathematical "+", in mix functions, in a "-" and cancel many info. Like you don't know how the 5.1 was generated my recommendation is don't use "phaseshift", most the times is the correct way. And only try "phaseshift" when the previous mix sounds strange.
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4th January 2013, 12:24 | #12010 | Link | |
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4th January 2013, 13:32 | #12011 | Link | |||||
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Argh, I changed the first page of this thread, but didn't update the same description in the help. Quote:
Doesn't happen for me!! Did you maybe replace the libav/ffmpeg dlls with a different version? Can anybody reproduce this problem? Quote:
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What would you need dialnorm for? I believe it's a fundamentally broken concept. |
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4th January 2013, 14:32 | #12012 | Link | |
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tebasuna51 had a similar result but he used -progressNumbers or whatever the command is. Strange how mine shows the same thing as ffmpeg "[truehd @ 00000000]" whereas his shows "[libav]". I'll see what happens when I clear out the eac3to folder.. Last edited by Snowknight26; 4th January 2013 at 14:37. |
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4th January 2013, 14:38 | #12013 | Link | |
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4th January 2013, 14:43 | #12014 | Link |
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Well, I'm not sure what to say but having gone through the thread I see a few people have different results.
For example: '[libav]': http://forum.doom9.org/showpost.php?...ostcount=11866 '[truehd @ 00000000]': http://forum.doom9.org/showpost.php?...ostcount=11883 Edit: Just tried a corrupt file and eac3to only showed '[libav]' so I guess it was using older dlls that were present in the folder. Case closed. Last edited by Snowknight26; 4th January 2013 at 14:49. |
4th January 2013, 16:14 | #12015 | Link | |
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4th January 2013, 16:19 | #12016 | Link | |
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The source code isn't needed or the issue. The issue is the required header to actually call into the DLL.
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Last edited by paradoxical; 4th January 2013 at 16:34. |
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4th January 2013, 18:25 | #12018 | Link | |
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Perhaps there is an issue with the new version?
http://forum.slysoft.com/showpost.php?p=361367&postcount=2976 Quote:
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4th January 2013, 19:29 | #12020 | Link |
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according to http://forum.doom9.org/showthread.php?t=23921 and http://web.archive.org/web/200202052...rg/sources.htm and http://web.archive.org/web/200204141...rg/sources.htm
http://web.archive.org/web/200202052...-dll-1.7.1.zip http://web.archive.org/web/200204141...id-dll-1.8.zip have sources to api call dll but.... don't download EDIT: http://web-beta.archive.org/web/2009...v1.5b23DLL.zip is possible use azid trought beesweet dll? (the zip contains headers) (i don't know if beesweet.dll uses azid.dll) Last edited by sl1pkn07; 4th January 2013 at 19:39. |
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eac3to |
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