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User profile for user: trickydicky_90
trickydicky_90
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Question: Audio Echo from Screen Recording - How to remove single audio stream

Hi All,


I used my iPad to capture a screen recording of a live stream - unfortunately, I had the "Microphone On" setting switched on when recording and so the audio of my video has a really pronounced echo, I'm assuming this has happened because it the video stream has its own audio and the microphone input is now overlaid on top of it?


Does anyone know of a good way to separate out one of the audio channels to remove it? I loaded the video into iMovie to try to play around with the equaliser/reducing background noise but it had limited impact on reducing the echo (and I couldn't find a way to separate out the audio stream into individual channels).


As it saves as a single video file - will the audio streams actually be separable?


All suggestions welcome - the screen recording saved as an MP4 format.


Thanks,

Richard

MacBook Pro 13", 10.15

Posted on May 15, 2020 7:36 AM

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User profile for user: Rich839
Rich839
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May 15, 2020 12:00 PM in response to trickydicky_90 In response to trickydicky_90

In iMovie it is not possible to separate two video tracks that are embedded in a video. The best you can do is to detach the entire audio from the video and substitute a track without the echo.


You might be able to do it with a sound editing app, like Audacity, that is a free download from the internet.


Try sharing out the movie and playing it in QuickTimePlayer to see if the echo still occurs.


I have found that audio in screen recordings often sounds very metallic, although I have not experienced the echo issue. I don't know what would be causing that. Your explanation probably is as good as anyone's.


-- Rich







May 15, 2020 12:00 PM

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User profile for user: Rich839
Rich839
User level: Level 8
(36,928 points)
iLifeSpeciality level out of ten: 1

May 15, 2020 12:00 PM in response to trickydicky_90 In response to trickydicky_90

In iMovie it is not possible to separate two video tracks that are embedded in a video. The best you can do is to detach the entire audio from the video and substitute a track without the echo.


You might be able to do it with a sound editing app, like Audacity, that is a free download from the internet.


Try sharing out the movie and playing it in QuickTimePlayer to see if the echo still occurs.


I have found that audio in screen recordings often sounds very metallic, although I have not experienced the echo issue. I don't know what would be causing that. Your explanation probably is as good as anyone's.


-- Rich







May 15, 2020 12:00 PM

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User profile for user: trickydicky_90

Question: Audio Echo from Screen Recording - How to remove single audio stream