Encore CS6
I have two separate projects, one to create a DVD and one to create a Blu-ray. Each project has 1 video as 1 chapter on the timeline. The source files were pre-encoded before being imported into encore. The file for the DVD project is MPEG-2 with AC3 audio and show's as "Don't Transcode". The file for the BD project is H.264 with AC3 audio and shows as "Don't Transcode".
When I build each project, the first thing Encore does is transcode audio. Then it uses the video as-is.
The audio track in both projects is actually identical, here it is:
Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Duration : 41mn 52s Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 76.7 MiB (4%)
This is a 100% within spec audio stream for DVD-Video and Blu-ray.
However, encore is transcoding to this:
Format : AC-3 Format/Info : Audio Coding 3 Mode extension : CM (complete main) Format settings, Endianness : Big Duration : 1h 29mn Bit rate mode : Constant Bit rate : 192 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 48.0 KHz Bit depth : 16 bits Compression mode : Lossy Stream size : 122 MiB (100%)
The only difference is the bit rate.
Why is Encore forcing the 192 Kbps bitrate? The 256 Kbps source file bitrate is 100% within spec for DVD-Video and Blu-ray disc.
Is there a way to stop this transcoding?
Note that there is no audio in the menu structure.