Questions tagged [audio]

Audio refers broadly to the information, be it acoustic or electronic, entering, traversing, or exiting some medium.

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3 views

Footage of event with 2 speakers - how to arrange audio in post production?

My question is about how to go about arranging audio post production. This is the situation: I'm about to work on footage of a multi-day event with two speakers, one the main presenter (A), the other ...
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Logitech Brio Ultra HD webcam together with Shure MV7 mic, both cabled to a Windows laptop - feasible?

I quite like the look of the videocamera function of the Logitech Brio Ultra HD webcam, but its audio function not so much and therefore I would prefer to use my Shure MV7 mic. My question is whether ...
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Split audio by frequency [migrated]

I would like recode wav files from stereo to 4 channels - front channels with low frequencies and back channels with high frequencies only; to store wav files on DLNA server and play on receiver in bi-...
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Audio Mix Vastly Different at Different Volumes

I have two pieces of dialogue recorded from the exact same source. I manually adjusted the volumes of these two pieces so that, to my ear, the volumes match perfectly. However, if I alter the overall ...
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Voice consistency across multiple recordings? [migrated]

If you record yourself say two sentences and play them sequentially, this would sound unnatural as the end pitch of the first sentence would likely differ from the beginning of the second sentence. ...
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Some questions about KDEnLive

In kdenlive's spectrum how can I 1- change the line into a circle? (something like below picture) 2- increase value of height of line? 3- mirror changes up and down of the line? (Like picture below)
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14 views

Volume Problems After Render (DaVinci Resolve)

In Resolve, my audio is mixed exactly how I want it. However, when I render the video out and play it back on other devices, certain pieces of audio are bizarrely off in terms of volume. Example image:...
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Add/Replace something with silence DaVinci Resolve

Thank you for helping me. Now, my question is quite simple but I can't find the answer: How can you add silence in DaVinci Resolve? I'm switching from Audacity to Fairlight and in Audacity, I just ...
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Which videoformats do support losless audio codecs?

I recently have produced a lot of visualized sounds (videofiles) and want to upload it on the web, at best without any loss of audio quality... I know it's possible with data formats like .mov .mkv ...
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FFMPEG inserts extra audio frame at the begining of first chunk in HLS

I'm trying to reencode input HLS video (h264/aac using ts segments) from Nth to Mth segment into new HLS video. I do it by creating new HLS media playlist containing only segments I need (ie from 4th ...
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DaVinci Resolve Fairlight advanced Noise Reduction

thank you for helping me! My problem is that I'm working with a very noisy microphone, so just enabling noice reduction in the fairlight options doesn't do the trick. I'm switching from audacity, ...
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FFmpeg seems to write bad .w64 files for pcm_f32le streams

I have a problem with FFmpeg when writing a pcm_f32le stream to a Wave64 file format (.w64). Basically, only FFplay can read the file back correctly. I tried with VLC, but it seems it cannot read any ....
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Issue after importing video in Premiere

I imported some videos in Premiere Pro (MOV format, captured with iPhone), but after adding them to the timeline, they start to have issues, like video and sound not sync, and videos that repeat ...
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Script to cut vid into clips based on audio peak? [duplicate]

I have a video that contains screams at various points. Is there a way to (via script) cut the screams out based on audio attributes then merge all clips into one supercut of just screams?
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The audio on my raw MOV file footage isn't showing up in Premiere Pro 2021 or 2022 on a PC

I shot my footage on the Sony FS7. I converted it via EditReady to an h.264 .mov file and it works great on my Mac in Premiere Pro. When I try to edit on the PC, there's "no audio" on the ...
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Removing only chapter data from mp4 not video or audio tracks

I have an mp4 video file with chapters. I would like to keep the video and audio data but not have them separated into chapters. I would preferably like to do this without re-encoding or suffering any ...
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How do I calculate the adjustment to a target dbFS? What's the formula?

For example, my peak volume is -4dB, but I want to increase it to -1dB (as per youtube recommendation). In the mixer master volume, which increase should I set? +3dB does not produce a -1dB peak. ...
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Applying Audio Effect to Entire Project

I'm working on a project made of hundreds of short video clips taken over the past year. Some indoor clips, some outdoor, some in a quiet environment, some in loud, etc. Naturally, they all have ...
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24 views

Software to swap audio tracks automatically

Is somewhere out there any software which can swap similar audio tracks ? For eg. I record video and audio on camera, but I'm also recording the audio with external recorder on the top of the camera. ...
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90 views

ffmpeg split and concat flac audio file generates error "Application provided invalid, non monotonically increasing dts to muxer in stream 0"

I'm using ffmpeg to cut slices from a flac audio file then concatenate them together. I'm able to do this and the output file plays in VLC media player and appears to have the correct duration; ...
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80 views

FFmpeg Optimized File Size Video Loop

I am attempting to create a video loop by merging a 15 second video with about 4 minutes of audio. After finding a similar question, I found a command that loops the input video for the length of the ...
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24 views

When I play two or more audio tracks at the same time, is there a formula to reduce volume so it does not clip?

When I play two videos e.g. side by side, the summed up volume sometimes ends up clipping. What I normally do, is lowering the volume of both the audio tracks (which have the same loudness), say of ...
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35 views

No Audio In VSDC editor

I finished recording a multi audio track recording on obs, and it has no sound (in the editor, as a video its fine.) I don't understand why.
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Is the audio from these videos in some weird format that I can't decode, or is it just corrupted?

I borrowed an Apeman A87 and used it on a road trip. However, the audio came out apparently corrupted except sometimes when filming indoors and with the menu set to the default language of the market ...
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Do i need both microphone and audiorecorder to start my video recording

I want to start recording udemy videos, i want to make proffessionally and esteticly looking good, i started ordering 3 lighting i decorated the place Saramonic SmartRig+ Zoom H1n Portable Recorder ...
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59 views

DaVinci Resolve 16 playback sound not working (Linux)

With default configuration there's no sound present. I've tried different speaker configuration without any difference.
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13 views

Matching voice recorded through different devices or software sources

I often end up having to record the audio more than once for some segments because of poor quality or background noise during initial recording. I use the same microphone but may be in a different ...
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15 views

Why is the video exported from OpenShot Video Editor silent when I choose the last few minutes of a soundtrack?

In OpenShot Video Editor, whenever I choose the last few minutes of a mp3 clip, either by dragging the clip edge or by the split clip function, that part always goes silent in the video exported, ...
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41 views

How to get external mic working through DSLR camera on Zoom on Mac?

I have tried taking the advice and plugging my mic into my camera, but it is now not working, for the question Noticeable video delay when connecting to laptop and DSLR + external mic. Now I am not ...
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59 views

Noticeable video delay when connecting to laptop and DSLR + external mic

I have a Canon EOS RP DSLR camera that is connected to the adapter through the battery, and plugged into a Pengo HDMI capture device, which is plugged into a USB hub (contains 16 USB ports), plugged ...
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Trouble combining audio and video streams

I have two streams, one audio and the other video. I'm trying to combine them using this command: ffmpeg -y -i audio.m3u8 -i video.m3u8 -c copy Video.mp4 I found this syntax here: https://video....
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FFMPEG -- Create New Audio File using aselect filter API call in C code

I have been working on an a program in C that invokes the use of FFMPEG's libraries to remove some segments of audio from a given audio file. I have created the filter successfully using the API call, ...
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FFMPEG C#/.NET Wrapper with SilenceDetect Filter

Does anyone happen to know if a wrapper exists within C# to run the FFMPEG silencedetect filter on audio files? I have been working on a program and am trying to avoid just running the FFMPEG ...
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ffmpeg- transcoding live channels

I'm using nginx conf to downsize the bitrate of some of live channels and convert its format to rtmp, but there are some channels that have more than one audio track, how can I change it? this is the ...
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1answer
60 views

Display only Intervals Selected using FFMPEG command

I have been working to remove certain intervals in audio using FFMPEG and was wondering if there is a command or certain technique to only display certain intervals selected. For example, say I have ...
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90 views

Removing background audio noise

I have recorded a demonstration video using a lav mic. The mic quality is ok but there is a discernible hiss in the background. I've tried playing with the settings on the camera and the mic, ...
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1answer
73 views

Audio from Motiv video file is offset wrong in Davinci Resolve

I am using an iPhone (iOS 14.6), Shure Motive Video (1.5.0.229) and Davinci Resolve (Mac, 17.2 Build 11) to capture video. When I play back the video file in Quicktime (Version 10.5 (1086.4.2)), the ...
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41 views

Is is safe to run ffmpeg several times in parallel in the same folder?

I'm writing a test which has to generate many files and to accelerate the feat, I use my 64 CPUs. That means I end up running up to 64 instances of ffmpeg inside the same folder. Is that a potential ...
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20 views

How can I record video over an existing video in an "overdub" fashion, keeping them perfectly in sync?

I am trying to figure out if there some way to for me to "overdub" video. What I mean by that is, I want to be able to record a video of me playing an instrument. Then I want to play back ...
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109 views

Correct way to normalize two audios before using filter_complex amix

I am trying to use ffmpeg to merge two audios, in.mp3 and out.mp3, like this: ffmpeg -i in.mp3 -i out.mp3 -filter_complex amix=inputs=2:duration=longest -c:a libmp3lame res.mp3 But the final output ...
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16 views

How to add noise reduction in specific parts of audio in Resolve

How to add noise reduction in specific parts of audio? For example, there is a part where there is speech with background noise so I am using the Noise Reduction effect to remove it but it also adds ...
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How do I add a second soundtrack in final cut pro?

I have an old movie for which I've added music and now I want to add some audio sound clips as well. How would I go about adding the audio clips along with the music which is already present?
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imported a movie now it has two audio tracks

ok, so i ripped a dvd with handbrake, converted it to an mp4, i import the mp4 to kdenlive and kdenlive is doing this thing where it's giving me two audio tracks, so at first i thought it was a right ...
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11 views

How do I remove wind noise when recording videos on my phone?

For some background information, I am a railway enthusiast and I regularly film trains passing by and also some of the train journeys I go on, filming the view outside. The trains move fast and here ...
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Only audio is playing when trying to replace the audio in video

I am trying to replace the audio with a new audio, I have gone through some SO questions and still having trouble solving the problem. As of now, I am getting only the audio with the specified ...
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36 views

What cable for 200' run between camera (video/audio) and ATEM switcher

I am running a video/audio signal from a camera in a lobby to a Blackmagicdesign ATEM switcher that are about 150' apart but cable run will be closer to 200'. The video/audio from the camera in the ...
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1answer
21 views

How to combine multiple audio tracks without sounding blasted?

Was going to make a combination of 9 covers of people singing the same song. I have it synced already and it is on sync, problem is its just sound like literal ear ache when played. How to fix?
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76 views

Audio clipping after amerge in FFmpeg

Hoping someone out there can help me with this audio issue I'm having using FFmpeg. I've written a bash script using FFmpeg that processes as source a broadcast quality ProRes (HQ) file with four mono ...
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31 views

Triming ogg files to an exact number of samples

Let me begin by saying that I'm not sure on which site on the Stack Exchange network I should post this, as the central theme is essentially codec internals. Background I would like to be able to ...
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22 views

How to record the voices of three people in a room?

We are planning to produce a Youtube channel, in which we interview one professor and one student at the same time, and we have very little experience with sound. A typical situation would be to have ...

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