Reduced audio quality when converting 7-channel discs

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MyMojo
Posts: 77
Joined: Wed Jul 30, 2014 4:58 pm
Location: Illinois

Reduced audio quality when converting 7-channel discs

Post by MyMojo »

I have noticed a drastic drop in audio bitrate/channels when converting 7-channel audio blu-rays. No matter what number of audio channel settings that I choose in a custom profile, or when leaving it "Same as source (if compatible)", the number of channels is dropped to 2 and bitrate is usually converted to a low number compared to version 1.4.0.18. It does this when AAC or AC3 is selected for codec. Versions .18 and older convert the 7-channel file to 6-channel with a high megabit rate, and it sounds awesome.

Media Info and VC log files attached:

P.S. Also getting a DCA decoder error in the log file. Is this expected?
And I also had 2-pass selected, but it's not selected in the log. This time I wasn't remuxing, I don't think.
Attachments
MediaInfo using 1.5.0.5.txt
(2.54 KiB) Downloaded 279 times
MediaInfo using 1.4.0.18.txt
(2.61 KiB) Downloaded 267 times
VSO Video Converter 1_mainlog_.20140929.082027.916.log
Log from 1.5.0.5
(3.75 KiB) Downloaded 252 times
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cedric
VSO Team Member
Posts: 1375
Joined: Fri May 02, 2008 9:31 am
Location: Toulouse-FRANCE

Re: Reduced audio quality when converting 7-channel discs

Post by cedric »

Hello MyMojo,

Please, can you try with the last beta version:

http://forums.vso-software.fr/post90958.html#p90958

Regards,
MyMojo
Posts: 77
Joined: Wed Jul 30, 2014 4:58 pm
Location: Illinois

Re: Reduced audio quality when converting 7-channel discs

Post by MyMojo »

cedric wrote:Hello MyMojo,

Please, can you try with the last beta version:

http://forums.vso-software.fr/post90958.html#p90958

Regards,
Sorry for the delay. Tried with latest (1.5.0.9b) and still does the same thing. Posting MediaInfo for original and converted files. Trying to convert 7-Channel DTS, Audio #1 into 6-Channel (or 7-Channel) AAC. Versions 1.4.0.18 and older did this very well. I think something happened when HD audio remuxing was introduced. The VSO log file looks the same as original posted file. I have the custom setting set to AAC and number of channels set to 'Same as original'.

Thanks!
7-Channel_Original.txt
(8.9 KiB) Downloaded 263 times
7-Channel_Audio_Reduced_to_2-Channel.txt
(2.54 KiB) Downloaded 268 times
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