Glenno Posted October 9, 2011 Report Share Posted October 9, 2011 Can Toast Titanium (or Pro) author a Blu-ray with 5.1 surround? Or is Lt/Rt (ProLogic II) the best it can do? Thanks! G Link to comment Share on other sites More sharing options...
theoldarchiver Posted October 9, 2011 Report Share Posted October 9, 2011 As I understand it, Toast converted audio will always be 2.0, but for audio files that don't need converting (AC3 elementary stream) 5.1 will be accepted. Link to comment Share on other sites More sharing options...
Glenno Posted October 9, 2011 Author Report Share Posted October 9, 2011 Thanks. I'm not quite clear on what an AC3 "elementary stream" is... or how I output that from Final Cut and/or Compressor. Searches haven't turned up anything very clear, so any tips would be much appreciated! Link to comment Share on other sites More sharing options...
theoldarchiver Posted October 9, 2011 Report Share Posted October 9, 2011 I'm not quite clear on what an AC3 "elementary stream" is... or how I output that from Final Cut and/or Compressor. Elementary stream means a file with just one kind of data: e.g. just video or just audio. (The terminology comes from the MPEG-2 standard, so a different but similar term may be applicable in a more general discussion.) .m2v and .mpv would be examples of a file with just MPEG-2 video. .ac3 would be a file with just AC3/A52/Dolby Digital audio. .264 would be a file with just H.264 video (maybe other extensions are used as well). http://documentation.apple.com/en/compressor/usermanual/index.html#chapter=18%26section=3%26tasks=true If you add a video-only file to Toast, it should notice that and look for a suitable audio file in the same folder, or ask the user to point to it. Link to comment Share on other sites More sharing options...
Glenno Posted October 9, 2011 Author Report Share Posted October 9, 2011 Thanks again! Cool, looks like it's working so far... I created a 5.1 elementary ac3 stream in Compressor from the 6 audio stems my sound mixer gave me. Attached it to the video stream in Toast, and Toast seems to recognize it as Dolby Digital 5.1 sound. Final questions in Toast: Under Encoding, any idea if can I choose PCM for uncompressed audio, or must I choose Dolby Digital? And should/can I set Reencoding to Never? Link to comment Share on other sites More sharing options...
theoldarchiver Posted October 9, 2011 Report Share Posted October 9, 2011 Under Encoding, any idea if can I choose PCM for uncompressed audio, or must I choose Dolby Digital? Leave it at DD; PCM would not be beneficial with a DD source file. And should/can I set Reencoding to Never? Set Reencoding to Never. This will prevent Toast from re-encoding the streams that are already compliant. Streams that are not compliant will be re-encoded anyway, regardless of this setting. Link to comment Share on other sites More sharing options...
Glenno Posted October 9, 2011 Author Report Share Posted October 9, 2011 Leave it at DD; PCM would not be beneficial with a DD source file. Okay, thanks, I wasn't sure if there'd be any further compression going on. Set Reencoding to Never. This will prevent Toast from re-encoding the streams that are already compliant. Streams that are not compliant will be re-encoded anyway, regardless of this setting. Lastly: So if Compressor did the audio at 640kbps, but Toast's highest setting is 448, any idea if Toast will still re-encode it at 448? Link to comment Share on other sites More sharing options...
Glenno Posted October 10, 2011 Author Report Share Posted October 10, 2011 Hm. I tried authoring 2 versions, one with the Lt/Rt mix, and one with the full 5.1 mix. The 5.1 Blu-ray definitely sounds better, I'm hearing sounds that are lost in the Lt/Rt mix. Any idea why that might be happening? FWIW, we didn't put anything solely on the surround channels. It may be a flaw in the Lt/Rt mixdown itself. Link to comment Share on other sites More sharing options...
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Glenno
Can Toast Titanium (or Pro) author a Blu-ray with 5.1 surround? Or is Lt/Rt (ProLogic II) the best it can do?
Thanks!
G
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