I'll top post just to say, WOW! Thank you so much, I'll try this out ASAP! Wes
On Wednesday 11 October 2006 7:21 am, Herman Robak wrote: > On Wed, 2006-10-11 at 21:08 +0900, Miha Kitič wrote: > > Assuming that you will be using another device for audio which can not > > be synchronized with the camera... > > > > I guess that the only way for you to make it work is to produce an event > > that will allow you to synchronize audio and video manually. > > > > I think in movie making they use a small wooden board with which they > > make a clicking sound just before they record a scene. I suppose if you > > clap loudly near the mike before you take what you want to take (and > > make sure that clap of your hands is included in the video), you will be > > able to synchronize the clap of your hands with the sound track visually > > (you could also hit the camera with the mike ;) . > > This assumes that the camera records no sound, which is not the case > for video cameras. It is much easier to synchronise two sounds with > each other, very accurately: > > Put the two recordings in an audio track of their own in Cinelerra. > Find a sentence or a sequence of sounds that stand out somewhat at the > start of the recording, and put a label at a start of a particular word > or peak in the sound (you can see the waveform in Cinelerra). Do the > same with the other recording. Now shift one of the tracks until the > labels align. > Listen to the two tracks simulataneously. It helps to pan one track to > the left channel and the other to the right. Shift one of the tracks > until you get rid of the "echo" effect: The tracks are in perfect > synch. Now verify that the external recording does not slip out of > synch over time. Skip a little forward; does the "echo" sound come > back? Skip to the end; are they still in synch? > > If the tracks do not stay in synch, you either have to make small cuts > or pads now and then to realign them, or change the sample rate of the > external recording _slightly_. You can change the sample rate for each > meadia file in Cinelerra, in the "Info" dialog (right-click on the media > thumbnail in the Media folder). This will make Cinelerra resample the > sound. This is a little CPU-heavy and lossy, but it can solve the synch > problem. -- "The only way to stay sane in an insane world is to be insane." --Me _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
