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 Quote Link to comment Share on other sites More sharing options...
0 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. 1 Quote Link to comment Share on other sites More sharing options...
0 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! Quote Link to comment Share on other sites More sharing options...
0 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. 1 Quote Link to comment Share on other sites More sharing options...
0 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? Quote Link to comment Share on other sites More sharing options...
0 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. 1 Quote Link to comment Share on other sites More sharing options...
0 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? Quote Link to comment Share on other sites More sharing options...
0 Glenno Posted October 10, 2011 Author Report Share Posted October 10, 2011 (edited) 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. Edited October 10, 2011 by Glenno Quote Link to comment Share on other sites More sharing options...
Question
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
Link to comment
Share on other sites
7 answers to this question
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.