ffmpeg-audio is used when the input is non ac3
ffmpeg-audioac3 is used when the input audio is ac3
Read the documentation for more details
-ac is written by MCEBuddy based on the number of inputs channels, MCEBuddy matches the number of input channels to output channels. So if the input audio has 2 channels, the output audio will have 2 channels.
If you want to override the default behaviour then include the line
-ac X
X being the number of channels you want. REMEMBER, aac encoder does NOT support 6 channel audio and will fail the conversion.
So when you added -ac 6, this forced MCEBuddy to ALWAYS encode the output as 6 channels even if the input was 2 channels (which makes no sense since you're extrapolating data).
When you select Default language, MCEBuddy tries to keep all the audio tracks. If you select a language MCEBuddy will try to select the language track which matches that name (if it find a match in the name), and if it finds multiple audio tracks with the same name it will keep the track with the most number of channels.
To find out which language tracks are within a file, when the file is in the queue, right click and select MediaInfo, it will show you the various audio tracks and the language (in brackets). That's what's used to match the audio track language name.
Again, refer to the documentation for more details.
ffmpeg-audioac3 is used when the input audio is ac3
Read the documentation for more details
-ac is written by MCEBuddy based on the number of inputs channels, MCEBuddy matches the number of input channels to output channels. So if the input audio has 2 channels, the output audio will have 2 channels.
If you want to override the default behaviour then include the line
-ac X
X being the number of channels you want. REMEMBER, aac encoder does NOT support 6 channel audio and will fail the conversion.
So when you added -ac 6, this forced MCEBuddy to ALWAYS encode the output as 6 channels even if the input was 2 channels (which makes no sense since you're extrapolating data).
When you select Default language, MCEBuddy tries to keep all the audio tracks. If you select a language MCEBuddy will try to select the language track which matches that name (if it find a match in the name), and if it finds multiple audio tracks with the same name it will keep the track with the most number of channels.
To find out which language tracks are within a file, when the file is in the queue, right click and select MediaInfo, it will show you the various audio tracks and the language (in brackets). That's what's used to match the audio track language name.
Again, refer to the documentation for more details.