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Posted by Arny Krueger on 10/31/07 13:31
"rakmanenuff" <rakmanenuff@hotmail.com> wrote in message
news:1193823714.223014.206700@o3g2000hsb.googlegroups.com...
> Just a quick question.
> I've watched people film music videos, and it's often the artist
> miming to a loud "ghetto blaster" at some location.
> Now.. I don't doubt that pro cameras have fairly accurate timing, and
> I guess professionals use playback devices that are in sync, but
> normal portable stereos don't always play back the music in the exact
> tempo of the original master.
Believe it or not, a portable stereo playing a digital recording (CD, MP3)
will match tempo far more than better enough to preserve lip-synch over the
duration of a typical music video.
But that isn't how you do a music video. As Richard posted, music videos
are typically done by laying video clips onto a time line that is defined by
the original music recording.
Frankly, many people do things this way for artistic reasons. A piece of
music can tell many different stories. A music video is typically one of
those stories translated into the video domain, and then the video is
time-synched with the music.
> I don't make pro videos, only fun ones with a cheap pocket-size
> digicam, but the tempo discrepancies are really bad.
Time to learn about video editing with modern software. I use Premiere
Elements, it costs about $90.
> How do people overcome this problem?
Lip-synching video to a sound track is one of those basic video editing
skills that one learns early on, if one wants to do credible work, even just
for fun.
> I can think of a few ways of doing it, like timestretching the audio.
Richard has it right - time-stretching audio is hard to do without creating
artifacts. Avoid it at almost any reasonable cost.
> Otherwise there might be a lot of tedious action with the razorblade
> or scissors.
I think you'd find modern video editing software to be quite a revelation.
I've been editing moving pictures for a long time, going back about 50
years. I've actually edited movies and audio tapes with a razor blade and
tape or glue. Thank God (and I'm adverse to using God's name in vain) for
modern nonlinear editing software, whether for audio or video!
BTW if you make your own music, the usual work flow is to edit the music
into its final state, and then layer the video clips next to it.
> But I'm curious to hear how others do this. Is there a
> "beat detector"/ alignment/ snap type plugin or function that syncs up
> one piece of audio to another?
None needed. If you're editing audio, the beat is often pretty clearly
displayed in the usual waveform display.
If you're editing audio and video together, things like hand-claps can be
added to make achieving lip-synch painfully easy.
I've taken to recording using a camcorder and a high quality digital audio
recorder with professional microphones concurrently, and matching up the
separately-recorded sound and video tracks by hand and eye.
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