Here is a patch to add E-AC3 encoding to Aften. It's only basic support
right now. The only metadata that is written is dialnorm and drc.
Also, it only supports 6-block encoding, so the bitrate is limited. But
it's still more than AC3. You can go up to 1024kbps @ 48kHz.
I haven't tested it extensively, but it seems to be working well for
everything I've tried so far.
I'm not sure if this should be added to Aften quite yet though. I
really want to get coupling added in Aften before things get anymore
E-AC3 TODO list
support fewer blocks for higher bitrates
better VBR (don't need to stick to AC3 frame sizes)
figure out how reduced samplerates work using Nero decoder
add option to write metadata
more channels (7.1)
AHT encoding (VQ and GAQ quantization)
Justin Ruggles wrote:
> E-AC3 TODO list
> better VBR (don't need to stick to AC3 frame sizes)
Here is a new version of the patch which takes advantage of E-AC3's
ability to use incremental frame sizes. This leads to an extremely
accurate and constant snr offset when using VBR encoding mode.