So, I'm trying to use XMedia Recode (ver. 126.96.36.199) to do some channel mapping, more specifically I'd like to create a stereo file using only the left and right front channels of a 5.1 audio track. Below you'll see the settings I used:
Now, the thing is, technically, the various channels are as follow:
Channel 1 = Left front channel
Channel 2 = Right front channel
Channel 3 = Center channel
Channel 4 = LFE channel
Channel 5 = Left rear channel
Channel 6 = Right rear channel
But the problem I encounter is that when I attribute channel 1 (left front channel) to channel 1 and channel 2 (right front channel) to channel 2 in the channel order mode (see picture above), the resulting audio file is a stereo file that combines ALL the channels of the 5.1 file, and not just the left and right front channels. The funny thing I noticed is that if I swap the channels (basically attributing channel 1 to channel 2 and channel 2 to channel 1. See picture below), I do get a stereo audio file with only the left and right front channels. The problem is they are swapped and this is what I would like to avoid.
I've tried every other combination (Left front channel and center channel, Left rear channel and LFE channel, etc.), and everytime, the resulting stereo file does only contain the two channels I selected. But for some odd reason, when I only select the two front channels, the resulting stereo file combines all the 6 channels into two channels (oh, and I'd like to precise it's not specific to that one 5.1 audio file I'm using. This happened with lots of other files).
Anyone knows what could be the cause of that problem and how to fix it?
Thanks in advance for any help you guys can provide!
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Last edited by _Snapper_; 13th Oct 2017 at 10:59.
I cant help you with Xmedia recode because I dont knows it. But since nobody answered you have some possiblilities.
1. Use program specialized for audio. For example Audacity. Delete unwanted track and save it.
2. Use Avidemux and choose Audio from top menu. Select track. In filter you can choose various remix settings and then save audio.
3. Most stupid. Computer videoplayers usually have function inverse stereo. I know, this is not good iidea
Hope somebody with Xmedia recode will helps you soon.
Edit: It is because conversion from 5.1 to 2 is made by sophisticate algorythm like prologic etc. The reason is to not lost sound from rear speakers because they are part of the sound. Sorry my english... cant explain exactly what I want say.
And last think. Why you converted it to pcm ? PCM stereo will be bigger than AC3 6ch, am I right? And you dont get better sound. I think no conversion is needed for stereo output.
Last edited by Bernix; 13th Oct 2017 at 06:19.
Thanks for the answer, Bernix!
add Audacity. Pure audio, not video+audio, AC3 448 5.1 20 min video takes 20 seconds on my computer. With video it takes much longer, but I think 2 hrs would take 2 minutes +/-
EDIT And I noticed, you changing the sampling rate from 48 to 44.1 is this lossless? Honestly I am not sure.
Last edited by Bernix; 13th Oct 2017 at 08:18.