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Music Video – syncing audio to overcranked video
Hi, I know this message is a bit old really BUT am still finger crossing and hoping I get a response 🙁
I shot a music video on 50fps for a delivery on a 25fps project. I sped up the audio track to 120% for the shot to archieve the slow mo action but lips still on sync look. Now am in final cut pro with the audio in real time and cant seems to find the solution / formula that work to get them in sync. (Example, the Coldplay ‘Yellow’ video on Youtube.
Please help 🙁
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12 Replies
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Umm, Thanks for your prompt response Dave. Heartbreaking 🙂 my DoP said it would work thats why I decided to go with his opinion (slap myself). Re-shooting is out of the question, guess I have to start serious brain storming 🙁
Thanks though, appreciate your response
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loool @ selling the DP’s Organ & Body parts… I think I’ll stick with that option :). I have a little luck on my side, LUCKILY, I insisted on shooting a “just in case” take of the same scene though its just one take though but I guess its better than none! I having to rely on that take like a golden egg now 🙂 Lesson Learnt! Next time, I’ll speed the track by 200% Which might make it impossible to sing to by the artist.. hmm
Quick question though, What about this thread?
https://forums.creativecow.net/thread/3/903236#903317
(Read the post by Einar Bragi on Jun 3, 2010)Wouldn’t that work for me?
Tahnk you so much for your expertise and help 🙂
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Thanks a lot… Its actually brain surgery if you are self thought and relatively new to this all. I know you have years and years of experience so its a duddle for you BUT I’ll try wrap my head around your post above in few hours hopefully (converting the example to PAL of course) lol… BTW, we shot on 50fps and am working on a 25fps sequence.
Thanks for you help though, I appreciate it.
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I think it depends on the audio, too. Post to one of the audio forums and see if an audio expert has a solution for you. I am NOT an audio expert. If you sampled the audio at a good bit-rate, you may be able to salvage the audio. The obvious problem is that you have overcranked video with disproportionately overcranked audio. If you spend the money on a good DP, consider spending the $ on a good audio professional, too.
What might work (no guarantees): resample the audio at a higher rate (say 192khz) and higher bit depth (say it was 16bit, can be changed to 24 bit or 32 bit floating) and stretch the audio to match the total video timeline (it will slow down with a lower pitch, but you can “stretch” without a change in pitch with some plug-ins). I THINK this can be done in Soundtrack Pro (assuming you are using FCS). Resampling won’t add any data to the recorded audio, but it will allow you some wiggle room in the audio edit.
Also, you can drop the video (retimed, of course) into Soundtrack Pro, Cubase, Logic Pro and others and use a variety of tools to bend and stretch the audio. If you are not real cozy with this, I strongly recommend a sound engineer who knows how to do audio for video – you have an expert for video, now get one for audio. There are tools most sound engineers will have that many video editors will not.
Jonathan Ziegler
https://www.electrictiger.com/
520-360-8293 -
Found an article/tutorial that might help:
Slowing Down Audio with Time Stretch in SoundTrack Pro
Jonathan Ziegler
https://www.electrictiger.com/
520-360-8293 -
I agree with Dave – your DoP should get his math right. Well, what you might be able to do:
You shot 50fps – when you play back at 25fps the speed is half – you did 120%music speed – half is 60% – which means, you have to Speed up your clip on the timeline again that much, that it goes from this 60% to a 100%. It means, that you will lose most of the slo-mo effect, but at least you can use the footage for the video and be able to lip sync then.Good Luck!
Greetz,
Sascha
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Thanks guys! WOW Jonathan, that tutorial seems so perfect, gotta try that out now.. 🙂
Thanks for sharing. I appreciate all your inputs and will take them one at a time and try them out over night. Will post if there’s any success. Thank you
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Forget changing the audio. I am an audio professional and you cannot alter the speed by 80%. Even if you had the best software in the world, you are speeding up the tempo, shortening the song by a huge amount.
In the real world, pitch correction software like MPEX3 or Pitch N Time can give you a great result up to about 8% on music. I have pushed voice only to 10% but music never.
The best time to get an audio pro involved is before the shoot. DP’s in my experience have rarely got a handle on frame rate to real time conversion. I have prepared audio on many clips that were shot with higher frame rates. For the bands sake, the speeds are calculated and playback tapes are prepared with a count in four clicks. Pitch is corrected so the chipmunk sound is not distracting. It won’t sound great but it is easier to sing to. The clicks will also be sped up so the band knows the tempo. Send the playback tape or file to all the band members a week ahead of the shoot so they can practice the sped up version and nail sync long before the DP turns up. When he does, you tell him/her exactly the frame rates that they must shoot.
Do not pay the DP until the audio is synced in post
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Hi Dave.
I’m going to shoot a music video using a Canon EOS 7D. My deliver frame rate is 24 and I want to shoot at 50fps and the conform in order to achive a slow motion effect with lip sync.
Following your instructions, I have to increase audio speed 200%. 50fps/24 = 2.08. Am I right?
The problem is that the audio gets so fast for the singer hahhaa
Thanks in advance
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Hey there, I’ve used this method before and yes that is correct. However, shooting at 50 and converting to 24 isn’t as easy as shooting at 60 and converting to 24 (just a matter of even numbers. The idea isn’t to shoot the entire video at that speed or, if that’s what you plan, expect to stop and retake several times. Basically, the musicians can do it for a minute or 2 then they goof up and you cut and then retake. Took us several takes last time and we just intercut with b-roll and other footage. Besides, the effect isn’t effective if the whole video is done that way. Only in parts. Lends to the artsy nature of that type of shooting, too.
Save early. Save often.
Jonathan Ziegler
http://www.electrictiger.com
520-360-8293
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