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14th February 2015, 15:53 | #1 | Link |
Registered User
Join Date: Sep 2014
Location: Nanjing, China
Posts: 18
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Some question about surround audio track and stereo audio track
I have some question about sorround audio track and stereo audio track these days, so I want to ask about it. And I'm sorry for my bad English.
1. For audio listening, I just use my laptop and JBL PEBBLES Stereo voice box, and does it make sense to use AC-3 5.1(640K) instead of AC-3 2.0(640K/448K/384K)? Does it will be better for stereo playback using sorround audio track? 2. I want to convert AC-3 5.1(640K) to AC-3 2.0 to just keep the stereo part of original audio file using eac3to, what bitrate should I decide? I don't want to increase bitrate unless it is useful for the audio file. I use eac3to like this command: Code:
eac3to "original_audio(640K).ac3" "audio.ac3" -down2 |
14th February 2015, 17:53 | #2 | Link |
Moderator
Join Date: Feb 2005
Location: Spain
Posts: 6,890
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1) Nope. Use stereo.
2) For AC3 2.0 the eac3to default bitrate is 448 Kb/s, but is enough 256 Kb/s. Use: eac3to "original_audio(640K).ac3" "audio.ac3" -downStereo -256
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