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 ...
- 466
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 ...
- 8,560
2
votes
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
- 131
2
votes
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'...
- 421
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 ...
- 1,539
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 ...
- 1,869
2
votes
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 ...
- 193
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 ...
- 1,578
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 ...
- 11
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 ...
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 ...
- 56
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 ...
- 41
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