Metalic Bilb peaks with few seconds apart

CubeAce wrote on 1/13/2019, 5:13 PM

No, not personally. The only time I have seen anything similar to this was years ago as a form of copyright protection on prerecorded videotapes where they put strong signals between frames.

What is throwing me is it appears to be on the source material waveform. What is the sampling rate of the recording?

Netnissen wrote on 1/14/2019, 2:40 AM

Hi.

Thanks for acting on my problem.
The video cuts I am trying to edit, are DV digital video cassette transfers.
(Just for info, I don't have the original DV tapes any more, and will have to do with the already transferred video files.)

From the .avi Video details I see the following Bitrate = 1024 kbps , 32000 kHz

When editing movies from a newer Digital Video camera Bitrate = 256 kbps , 48000 kHz
The bibs does not appear.

Hope you can help in a solution for editing my older videos.

Thanks in advance :-)

emmrecs wrote on 1/14/2019, 4:04 AM

Hi.

From the .avi Video details I see the following Bitrate = 1024 kbps , 32000 kHz

Notice the part of that quote I have highlighted! Your source video has a rather unusual audio sample rate of 32 kHZ; MEP will "expect" 48 kHZ. I think you need to find a convertor which will change the sample rate of your existing audio to 48 kHz. (I suspect the blips you are hearing are caused by MEP trying, apparently with limited success, to make your audio "fit".)

Also, the stated bit rate (1024 bps) suggests that the audio is recorded as full PCM wav, at the lower sample rate. That is also unusual and you may need to ensure the convertor also increases the bit rate to 1526, the "standard" for 48 kHz wav files. Alternatively, you may wish to reduce the bit rate to something mor elike the other files you list which do play correctly, but doing this will, inevitably, reduce the overall "quality" of the audio, though this reduction may be almost imperceptible.

HTH

Jeff

Netnissen wrote on 1/14/2019, 4:36 AM

Hi Emmrecs.

Thanks for your suggestions.
I can now observe, if using "HandBrake" for converting the original video file to MP4 with audio Bitrate 256, and then use the new video in Movie Edit Pro, the blips does not appear 😊👍.
But of cause by converting the video from the original AVI to MP4, I would expect to loose some quality. Do you know of a program "free" that can convert only the audio file, leaving the original video?

Kind regards

CubeAce wrote on 1/14/2019, 3:04 PM

@emmrecs

Why not just have the converted file sit next to the original in MEP and mute the sound of one file and the video of the other for conversion?

Netnissen wrote on 1/14/2019, 3:55 PM

CubeAce.

Yes of cause..👌, didn't think of that. Good idea.

I am new to use of MEP, but sure, that I in time will love working with the program.

Thanks for your help 😊

emmrecs wrote on 1/15/2019, 3:28 AM

@CubeAce

That is a perfectly reasonable solution!

One potential problem might occur on longer files, where the possibility of audio/video drift happening (between the two "versions" of the file) is not impossible.

CubeAce wrote on 1/15/2019, 6:19 AM

@emmrecs

Then we can go onto how to sync audio to video 😉

Netnissen wrote on 1/15/2019, 6:46 AM

Actually I have another Question regarding the sound. But I don't know if forum allows me to continue in this tread, or if I have to start a new one, for credit to the Solution. Please inform.
But question is if possible to save the audio file as MP3 for editing in e.g. Audacity, ones separated from the video file in MEP?

emmrecs wrote on 1/15/2019, 6:50 AM

@CubeAce

Then we can go onto how to sync audio to video 😉

Oh what a can of worms that would be!!!

@Netnissen

It would be better to start a new thread with your new question but, as a general comment on what you have written, you should NEVER save as mp3 if you have any intention of carrying out further editing of any audio!

If you'd like to know why, just start that new thread!!

Jeff