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4 votes
Accepted

Can a MP3 file contain video frames?

Mp3 is audio only. The file extension can be virtually anything; if it's recognized as an extension known by Windows the associated program will be used to open it. The program will usually then read ...
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4 votes
Accepted

Does sound quality increase if you play a video in High Definition?

In general, the creator of a video can choose any combination of video-quality and audio-quality. In practice, persons who know what they are doing, and also the automatic engines of YouTube (...
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  • 166
3 votes

How do you sync two tracks of similar audio?

If you don't start with timecode, or even a 2-pop or clapper, I can't see any other way than lining it up by eye; finding a common beginning… then hoping they stay approximately in sync. I've never ...
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  • 7,089
3 votes

Permission and Legality for using others' sound design videos on my website

Crediting never gives permission to use anything. If the creator does not say anything in the description, or does not provide a creative commons (CC) or similar license, you need to reach the ...
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3 votes
Accepted

Determining the consistency of the BPM of a track

Depends... If it's a track played by humans then unless they played to a click then it's unlikely the BPM is consistent because people will fluctuate tempo. Obviously the best will fluctuate only ...
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3 votes

What are the correct audio levels for Voice and Music in a web promo video?

I find what coaxmw says to be true when I don't have a lot of music, so with primarily voice over. Regardless of Lufs and other standards for loudness, you should be mixing/leveling with your ears not ...
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  • 2,906
2 votes

What are the correct audio levels for Voice and Music in a web promo video?

There aren't really an "correct" levels for the web. I will usually make the web version of commercial hit around -16 to -18 lufs throughout the spot with peaks around -2dbfs. It seems like most ...
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  • 1,304
2 votes

Recording video on external camera/device, and syncing with Pro Tools

I would go with the clapper method, I have been using it for some time and never had an issue with it. As mentioned it will drift over time but this depends on clip length. Movies and the such ...
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  • 1,000
2 votes

Permission and Legality for using others' sound design videos on my website

You need to check the license for the clip. If they are not Creative Commons licensed then it's probably a good idea to get in touch with the creator for permission. If you've not started on ...
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  • 4,465
2 votes
Accepted

Dummy load on TV video input with RCA jack?

The TV needs an actual video source to be detected. Simply terminating the input doesn't count. You need a video signal that has all the synchronization signals (which are detected) but the picture ...
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2 votes

How do you sync two tracks of similar audio?

There are tools to do this kind of syncing in video editors. I am currently learning to use a free editor (not free source code though), Davinci Resolve. If you search for Multicam sync you will find ...
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  • 1,254
1 vote

How to improve the audio quality in my YouTube videos?

Basic steps to getting good audio quality: Get an external mic. You've already done this. When you use the built-in mic in the smartphone while recording video, the distance between the mic and your ...
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  • 1,548
1 vote

How to isolate certain voices in video?

There is no way to do what you want. Human voice, no matter what voice timbre people have, is pretty much in the same frequency range. That said, you can at least filter out some of background noise ...
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1 vote

how to use 2 shotgun mics for videocam with external mic input

if you have two persons in the interview, hire a boom operator with experience. she or he will handle the audio side and you can focus on the interview.
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  • 2,906
1 vote

What is the difference between headphone jack and line out on Zoom H5 Audio Recorder?

The H5 has an option to have the DB cut down from the line out out to the Camera, you can find this in the manual or on the Zoom YouTube channel for the H5
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1 vote
Accepted

What is the difference between headphone jack and line out on Zoom H5 Audio Recorder?

It's not a good idea, because the levels on both the line output and the headphone output are much too high for the camera mic input. If you were to turn the volume down on the headphone output, you'...
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1 vote

Can not remove hiss/hum

Sounds like you could benefit from a pre-amp of some sort to between the microphone and your camera. Your camera most likely takes a line level signal into the Aux jack. Here is an example of one way ...
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1 vote

Can not remove hiss/hum

What type of cables are you using to connect your audio interface into your camera? Does it support TRS? TRS cables generally do a great job of eliminating noise. The issue could range from gain ...
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1 vote

How to batch demux sound from videos to mp3 or aac

As leftaroundabout said, use ffmpeg (or avconv - the one is forked off the other). It is command line based, which makes it useful for batch operations. On my Linux box the batch command would be ...
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1 vote

Recording video on external camera/device, and syncing with Pro Tools

here are a few clues : as your protools rig and the camera do not share a common clock reference, their respective speeds will slowly drift and you will notice that on long takes, even if you sync ...
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  • 2,613
1 vote

What is a "violator"?

Asked an editor friend of mine and said it's probably sync tones (not just pops) which some production outfits use instead of a pop when a video fades from black (aka first frame is a black frame). ...
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  • 139
1 vote

What are the correct audio levels for Voice and Music in a web promo video?

Take a look at a selection of promo videos - there are as many approaches as videos, some trying to have the vocals punch through a mix, some that want to make music the forefront at all times etc. ...
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  • 5,846
1 vote

Video As Audio?

I once tried recording a video signal as audio on a vhs tape, if you squinted at it you could make out the original image on things with sharp contrast, it obviously did not get the colour burst so it ...
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  • 11

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