Joe Riggs Posted March 19, 2018 Report Share Posted March 19, 2018 Hello, I was wondering if any post audio pros could answer this. We re-edited a finished film from years back. For the re-edit we used the 5.1 stems: The 5.1 dialogue tracks The 5.1 background tracks The 5.1 FX tracks The 5.1 Music tracks So all 24 tracks were carried throughout the edit. Now my question is what is the procedure to create new master Stereo and 5.1 files? For the Stereo file is it as simple as Pan all L and Ls channels to the left Pan all R and Rs channels to the right Leave C channels as is and discard LFE then export? For 5.1 would you just mute all tracks except the Center channel for each stem, and export, then repeat that for L,R,Ls,Rs, LFE? Quote Link to comment Share on other sites More sharing options...
Jay Rose Posted March 21, 2018 Report Share Posted March 21, 2018 Your plan makes sense, except I wouldn't totally throw out LFE on the stereo mix... there might be something important there. And there might be some level trimming necessary if the scene-to-scene flow has changed. The unanswered question, of course, is will the new edit disrupt any of those stems? I don't know what cutting they did, but music frequently gets mangled both inside and across scenes, and bgs can have abrupt shifts if there are edits within a scene. That might take some bandaids -- or at least, offsetting the edits -- before you mix. Quote Link to comment Share on other sites More sharing options...
Michael Gilbert Posted April 3, 2018 Report Share Posted April 3, 2018 Are you trying to do this within your picture editing software or sending it out to pro tools? I always clean up all the edits of the stems individually, making the necessary prelaps and post laps. Anything that doesn't work gets re-edited. Then using all of it, print new(to the current picture version) stems, print master, and LtRt folddowns using the 5.1 print master as the source. You are basically doing what you did for the original print, but using stems and "new material" as your source instead of all of the individual sound files. Quote Link to comment Share on other sites More sharing options...
minister Posted July 9, 2018 Report Share Posted July 9, 2018 On 3/19/2018 at 1:00 PM, Joe Riggs said: Hello, I was wondering if any post audio pros could answer this. We re-edited a finished film from years back. For the re-edit we used the 5.1 stems: The 5.1 dialogue tracks The 5.1 background tracks The 5.1 FX tracks The 5.1 Music tracks So all 24 tracks were carried throughout the edit. Now my question is what is the procedure to create new master Stereo and 5.1 files? For the Stereo file is it as simple as Pan all L and Ls channels to the left Pan all R and Rs channels to the right Leave C channels as is and discard LFE then export? For 5.1 would you just mute all tracks except the Center channel for each stem, and export, then repeat that for L,R,Ls,Rs, LFE? On 3/20/2018 at 9:37 PM, Jay Rose said: Your plan makes sense, except I wouldn't totally throw out LFE on the stereo mix... there might be something important there. And there might be some level trimming necessary if the scene-to-scene flow has changed. The unanswered question, of course, is will the new edit disrupt any of those stems? I don't know what cutting they did, but music frequently gets mangled both inside and across scenes, and bgs can have abrupt shifts if there are edits within a scene. That might take some bandaids -- or at least, offsetting the edits -- before you mix. I realize this is an ancient post, but I wanted to correct this for any future viewers of this. Do not simply pan and not adjust channels to Downmix to Stereo! This simple formula is: L pan Left, leave at unity R pan Right, leave at unity Center leave Center but drop 3dB Ls pan Left, drop 6dB Rs pan Right, drop 6dB LFE -- I never understood why people drop this especially if you properly use it as an EFFECT! Though, I know that the Dolby Stereo (LtRt) auto downmix does drop it. Why not mix it in? but drop it 6 or 9 12dB. To taste! if is only info below 120 for boom and rumble, why not have it in stereo? "For 5.1 would you just mute all tracks except the Center channel for each stem, and export, then repeat that for L,R,Ls,Rs, LFE?" I don't understand this question. After you print the mix, or consolidate stems then export clips as whole files. No export. No need to mute and do 1 at a time. Quote Link to comment Share on other sites More sharing options...
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