• Dehysea
    Posts: 1
    Joined: Jul 27th, 2006
    Need a hand setting BPM for audio to movie in Logic
    I'm about to create some sound effects for a Quicktime movie in Logic. There is an existing music track that goes with the movie. I've imported the movie, matched the Frame Rate in Logic and I've extracted the audio onto a track. I'm trying to figure out how to set the BPM properly to match the existing music track. The movie and audio are the same length in SMPTE Time code but I would like to adjust Logic's timeline so that the BPM of the project matches the BPM of the existing music so I can add additional effects. The music is in 4/4 time and I've tried BPM Counter and Detect Tempo and I get a number like 78.2229 and I can't seem to get a good match for the project. What is the best resolve for this? I would like to use the Metronome in the project if possible so that existing music matches the metronome. Any help is greatly appreciated.
  • Peter Schwartz
    Posts: 546
    Joined: Sep 15th, 2007
    Re: Need a hand setting BPM for audio to movie in Logic
    The BPM Counter is too rudimentary for this kind of work. Beat mapping is the only way to go here. I will strongly suggest that you save a copy of your project which has ONLY the imported soundtrack from the movie file, with everything in sync as you described. For each individual scene or cue, do as "save as..." of the master project, i.e... - Master Project - Master Project, saved as "1fx1" - Master Projects, saved as "1fx2" ...etc... When you make these copies, save each one with the save assets box [i]unchecked[/i]. When it comes to beat mapping, Logic does a fantastic job. But I would strongly suggest that you do not attempt to work on two or more scenes in the same project. Finally, workflow considerations... 1) For each scene/cue, load up the Master. Assuming you want each scene to start near the beginning of the project (1 1 1 1), determine where you want the movie to start by regular playback (or otherwise positioning the playhead to around the start of the scene). Note that SMPTE number. Then, SMPTE-unlock the audio track and move the left edge towards the right to past the point where you actually want the movie to begin playing at 1 1 1 1. (Alternatively, use the scissor tool to slice the audio a bit past the point where you want the movie to start and discard the portion on the left). SMPTE-lock the audio again. Then [i]set[/i] the SMPTE Position of the first tempo event (in the tempo list) to "read into" the movie so that your scene starts in the vicinity of 1 1 1 1. Finally, SMPTE-unlock the audio track and drag the left the left edge of the region to 1 1 1 1. Then Save As... (as described above). With respect to the audio track, the operation I described above is a necessary evil in Logic. 2) Do beat mapping first. Be sure you're satisfied with the beat mapping before doing any other work 3) Many times it's unnecessary to beat map the entire song. You can beat map strategic downbeats and get the tempo of the whole song from there. If the original song was recorded to a click and doesn't change in tempo, chances are you can beat map the downbeat of bar 1, 2, and 3 to establish the tempo for the rest of the song. Just to be sure, add another beat mapping 'node' at the downbeat of the last bar of music. Then delete any 'nodes' between the downbeat and the last beat. That will give you the average tempo for the entire song. 4) Do not worry in the least if your tempo ends up looking "fractional" (per your post). It doesn't matter what the numbers look like. The point is to get a steady click. HTH
  • audiobin46
    Posts: 3
    Joined: Aug 13th, 2011
    Re: Need a hand for SFX to movie in Logic
    Hi its been so many days am searchin for this problem..i would like to put SFX for a movie.. as u all know ther is no BPM or TEMPO factors affects for the SFX...wat i need is to place the playhead cursor exactly at the SPECIFIC FRAME to add SFX.. I even tried changing the grid to bar and time, time and bar and other different modes but its not workin out :( Because i need to place the SFX at a exact frame... Its something like changing the grid mode to FRAMES in reference wit SMPTE alone or any other possibilities...I would be reaaallllyyyy haapppieeee if u people get me an good solution... waiting?????????????? :( when i tried to change the cursor position to place the sound at particular frame by using the comma key and fullstop key its changing in bar by bar or in time fashion.... i don need tht for SFX....cause its everythin depend on exact frame...pleaseee get me outta dis :(
  • Peter Schwartz
    Posts: 546
    Joined: Sep 15th, 2007
    Re: Need a hand for SFX to movie in Logic
    Audiobin, Do me a favor... start a new thread with your question, as it's unrelated to this thread, and we like to keep "one topic per post" here in the forum. Thanks! Ski
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