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#1
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Syncing audio and video for casual production
Sorry if this is a repeat. My News client freaked, and
I suspect I lot my last post. Briefly, I was wondering about how to publish a nice musical performance to youtube etc... while providing great audio. I've been reading a little about it. Here is my take after a brief Google search: 1) Provide a great audio signal to the camera via it's *not stellar* audio input. Great. No syncing issues, but you can't monitor the input level on the probably lame onboard preamps. 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. 3) Use timecode. Now, I have a Tascam HD-P2 with timecode. Would it cost an arm and a leg to get a camera with timecode? Other than all this, how are casual internet users generating video with great audio (if there are there any). I could post just audio of my performance, but I'm now starting to get interested in the video part of internet content sharing. Thanks! Toby --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
#2
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Syncing audio and video for casual production
"Tobiah" skrev i en meddelelse
... Sorry if this is a repeat. My News client freaked, and I suspect I lot my last post. Briefly, I was wondering about how to publish a nice musical performance to youtube etc... while providing great audio. I've been reading a little about it. Here is my take after a brief Google search: 1) Provide a great audio signal to the camera via it's *not stellar* audio input. Great. No syncing issues, but you can't monitor the input level on the probably lame onboard preamps. 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. 3) Use timecode. Now, I have a Tascam HD-P2 with timecode. Would it cost an arm and a leg to get a camera with timecode? 4) Sync the replacement audio to the camera audio or rather sync the video via the camera audio to the replacement audio. This requires that the video camera(s) should not be too far away from the sound source. Magix Movie Editor reportedly can help you doing it, in Sony's competing product - a "Vegas Lite" it is visually easy, but I miss the option for entering a temporal offset as Audition (3) has it in audio clip properties in the multitrack interface. It also doesn't (seem to) have a "lock in time" to prevent files from accidentally slipping when you click on them. Mostly it works well though, this because the digitizing crystals seem to be unbelievably precise. And yes, it is a modified "2)", it is helpful if you can get away with a clap but not really really necessary. Toby 5) Disable the darn Avast ad and flame them for reactivating it for news posts in every binary update in case you paid for Avast, which you should, it actually seems to be very good. Kind regards Peter Larsen |
#3
Posted to rec.audio.pro
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Syncing audio and video for casual production
"Peter Larsen" wrote in message k... 4) Sync the replacement audio to the camera audio or rather sync the video via the camera audio to the replacement audio. This requires that the video camera(s) should not be too far away from the sound source. Magix Movie Editor reportedly can help you doing it, in Sony's competing product - a "Vegas Lite" it is visually easy, but I miss the option for entering a temporal offset as Audition (3) has it in audio clip properties in the multitrack interface. It also doesn't (seem to) have a "lock in time" to prevent files from accidentally slipping when you click on them. Mostly it works well though, this because the digitizing crystals seem to be unbelievably precise. And yes, it is a modified "2)", it is helpful if you can get away with a clap but not really really necessary. This is our standard method for all video projects, whether it is a music event or a wedding ceremony. For weddings, a miniature digital recorder is placed on the groom with a lapel mike catching the vows and everything else. For music, of course a better mike and recorder catch the good double system audio while the camera records with the camera mike and you sync them up later by placing all tracks on the timeline in a multitrack video editing program. There is no need for a clapboard or other syncing device. You can just find an obvious point in the shot that can be easily found on both audio and video tracks, go roughly to the same spot on both recorders (audio and video) and fine sync by means of the waveforms. Just keep magnifying the audio tracks until it is easy to see a common point in the waveforms. Barring that, you can just listen to both tracks, figure out which one is ahead, and slip sync them into alignment. In other words, you hear an echo in the tracks, stop and move one of them, and play again. They will stay in sync for over an hour if both are digital recorders. Gary Eickmeier |
#4
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Syncing audio and video for casual production
They will stay in sync for over an hour if both are digital recorders. I assumed clock drift was going to be a problem. I'll give it a go, since this doesn't have to be professional, and I'm recording short individual pieces at home. I suppose it's likely that the camera and my sound card will keep pretty similar time. The camera will also be relatively close to the instrument. Toby |
#5
Posted to rec.audio.pro
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Syncing audio and video for casual production
In article , Tobiah wrote:
They will stay in sync for over an hour if both are digital recorders. I assumed clock drift was going to be a problem. I'll give it a go, since this doesn't have to be professional, and I'm recording short individual pieces at home. I suppose it's likely that the camera and my sound card will keep pretty similar time. The camera will also be relatively close to the instrument. If you have a guide track on the camera, or you put slates on both beginning and end, you can actually quantify the clock drift and see how bad it is and thus compensate for it. In reality, drift is pretty much not an issue... but I like to slate the end just in case someday it is. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#6
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Syncing audio and video for casual production
On 11/11/2014 2:04 AM, Scott Dorsey wrote:
In article , Tobiah wrote: They will stay in sync for over an hour if both are digital recorders. I assumed clock drift was going to be a problem. I'll give it a go, since this doesn't have to be professional, and I'm recording short individual pieces at home. I suppose it's likely that the camera and my sound card will keep pretty similar time. The camera will also be relatively close to the instrument. If you have a guide track on the camera, or you put slates on both beginning and end, you can actually quantify the clock drift and see how bad it is and thus compensate for it. In reality, drift is pretty much not an issue... but I like to slate the end just in case someday it is. --scott Clock drift is not usually an issue IF you substitute audio tracks and are only worried about lip sync. It IS an issue if you need to mix the tracks and phase errors become significant. Trevor. |
#7
Posted to rec.audio.pro
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Syncing audio and video for casual production
In article , Tobiah wrote:
Here is my take after a brief Google search: 1) Provide a great audio signal to the camera via it's *not stellar* audio input. Great. No syncing issues, but you can't monitor the input level on the probably lame onboard preamps. The real problem is that you can't turn off the AVC on most cameras. 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. This is not bad at all, really. It might mean having someone clap their hands on stage in front of a mike at the beginning and end of each set, but it's really very workable. 3) Use timecode. Now, I have a Tascam HD-P2 with timecode. Would it cost an arm and a leg to get a camera with timecode? Yes. Other than all this, how are casual internet users generating video with great audio (if there are there any). I could post just audio of my performance, but I'm now starting to get interested in the video part of internet content sharing. If they are smart they are using the best and easiest method: 4) Record double system sound with a digital recorder but ALSO record ambient sound using the on-camera mike on the video recorder. Use the on-camera mike as a guide track to synch up the good quality audio track. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#8
Posted to rec.audio.pro
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Syncing audio and video for casual production
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#9
Posted to rec.audio.pro
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Syncing audio and video for casual production
On Saturday, November 8, 2014 6:34:55 PM UTC-7, Tobiah wrote:
Sorry if this is a repeat. My News client freaked, and I suspect I lot my last post. Briefly, I was wondering about how to publish a nice musical performance to youtube etc... while providing great audio. I've been reading a little about it. Here is my take after a brief Google search: 1) Provide a great audio signal to the camera via it's *not stellar* audio input. Great. No syncing issues, but you can't monitor the input level on the probably lame onboard preamps. 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. 3) Use timecode. Now, I have a Tascam HD-P2 with timecode. Would it cost an arm and a leg to get a camera with timecode? Other than all this, how are casual internet users generating video with great audio (if there are there any). I could post just audio of my performance, but I'm now starting to get interested in the video part of internet content sharing. Thanks! Toby You can record the timecode from the recorder to a track on the camera and use that for synch, but it is really overkill for most projects. I use FCPX and I just import my audio and video from the camera and synch it to my imported audio from the Sound Devices 744T by creating a multicam clip. This works well and quickly. I select synch via audio in the menu. The only problem is if the camera is a long distance from the audio recording microphones. Then I do have to compensate for that difference by 1ms/foot difference. I often record in an auditorium where my camera may be as much as 60' from the microphones. When I can, I do use a clapboard or a hand slap to establish a synch, but I don't find it necessary most of the time. |
#10
Posted to rec.audio.pro
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Syncing audio and video for casual production
In article ,
Tobiah wrote: Briefly, I was wondering about how to publish a nice musical performance to youtube etc... while providing great audio. I've been reading a little about it. Here is my take after a brief Google search: 1) Provide a great audio signal to the camera via it's *not stellar* audio input. Great. No syncing issues, but you can't monitor the input level on the probably lame onboard preamps. Assuming you're doing this all on one take, either use the camera mic or a feed from your mixer - as well as to your high quality recorder. 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. Clapper boards are not just '1930s stuff' They also give a visual ident of scene number etc. 3) Use timecode. Now, I have a Tascam HD-P2 with timecode. Would it cost an arm and a leg to get a camera with timecode? Yes. There's a big difference in price between domestic and pro stuff. Simply use any one of a number of video editing packages that allow enough audio tracks. Lay your wild recording on separate tracks to the camera one and slide it into sync by ear and eye - which is where the clapper board makes things slightly easier as a starting point. Just how well it will remain in sync throughout the entire piece depends on a number of things. -- *A cartoonist was found dead in his home. Details are sketchy.* Dave Plowman London SW To e-mail, change noise into sound. |
#11
Posted to rec.audio.pro
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Syncing audio and video for casual production
Dave Plowman (News) wrote:
2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. Clapper boards are not just '1930s stuff' They also give a visual ident of scene number etc. I never got that. Here in the US, we have slates. In the UK you have clappers. We have a PA doing the slating, but in the UK you have a clapper girl. Sometimes the clapper girl is a young man. Best slate ever: http://www.panix.com/~kludge/lizard13.jpg (It's an MOS slate without a clapstick though.) --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#12
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Syncing audio and video for casual production
On 11/10/2014 10:09 AM, Scott Dorsey wrote:
Sometimes the clapper girl is a young man. Isn't that a brand of baking powder? -- For a good time, visit http://mikeriversaudio.wordpress.com |
#13
Posted to rec.audio.pro
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Syncing audio and video for casual production
"Mike Rivers" wrote in message ...
On 11/10/2014 10:09 AM, Scott Dorsey wrote: Sometimes the clapper girl is a young man. Isn't that a brand of baking powder? That's Clabber Girl, you dolt. http://www.clabbergirl.com |
#14
Posted to rec.audio.pro
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Syncing audio and video for casual production
William Sommerwerck wrote:
"Mike Rivers" wrote in message ... On 11/10/2014 10:09 AM, Scott Dorsey wrote: Sometimes the clapper girl is a young man. Isn't that a brand of baking powder? That's Clabber Girl, you dolt. Can the Clabber Girl clobber the clapper girl? --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#15
Posted to rec.audio.pro
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Syncing audio and video for casual production
Mike Rivers wrote:
On 11/10/2014 10:09 AM, Scott Dorsey wrote: Sometimes the clapper girl is a young man. Isn't that a brand of baking powder? Only at Jerry Clower concerts. -- Les Cargill |
#16
Posted to rec.audio.pro
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Syncing audio and video for casual production
In article ,
Scott Dorsey wrote: Dave Plowman (News) wrote: 2) Do some 1930's stuff and use a slate board and worry about the sync later. Nope. I don't have that much time. Clapper boards are not just '1930s stuff' They also give a visual ident of scene number etc. I never got that. Here in the US, we have slates. In the UK you have clappers. We have a PA doing the slating, but in the UK you have a clapper girl. Sometimes the clapper girl is a young man. Best slate ever: http://www.panix.com/~kludge/lizard13.jpg (It's an MOS slate without a clapstick though.) --scott ;-) Everything like that varies country by country as well as even between companies. Remember doing one shoot on video (so no clapper board) where the PA (or rather script supervisor in the UK) logged the TC of each take. But the editors still wanted a verbal ident on each take. And the boom op got this job - as he was obviously always fairly close to a mic. And you wouldn't believe how difficult it was for some to remember shot and take numbers. ;-) -- *Forget the Joneses, I keep us up with the Simpsons. Dave Plowman London SW To e-mail, change noise into sound. |
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