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My first test with small samples works ok. Also the ac3 encode.
About the ac3 parameters I want send you my opinion:
I know Aften have a lot of parameters and is not convenient show all to end user because can be confused.
The expert user always can use Aften in CLI mode to obtain all of features.
The most know ac3 encoder is Sonic Foundry SoftEncode and I want propose a subset of their parameters to be offered to end user of SoundOut:
- BitRate with Auto option, at least in CLI mode this works (always CBR, we need ac3, instead aac, to provide compatibility with DVD and AVI and VBR don't work, let VBR to expert users)
- Dialog Normalization, the default -31 dB is ok but is a important parameter.
- Dolby Surround Mode, only the user can know if the original sound 2.0 is Dolby ProLogic encoded. Parameter requested in Doom9 forum.
- Dynamic Range Compression, or DRC Profile (in test phase in Aften).
Now some preprocessing options:
- DC high-pass filter
- Bandwidth low-pass filter
- LFE low-pass filter
- 90 degree phase shift for surround channels, not yet implemented in Aften (future option)
There are parameters like 'Use block switching' or 'Accurate Bit-Allocation', and others, not directed to end users but for test or developing purpose.
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