Questions tagged [audio]

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

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23 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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30 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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22 views

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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11 views

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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22 views

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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33 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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7 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
25 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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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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14 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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48 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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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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8 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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13 views

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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1answer
28 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
20 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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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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21 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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1answer
11 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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29 views

How to detect “late” audio streams in MPEG-2 TS (with ffmpeg, ffprobe or mediainfo)?

I am recording from my Linux TV-Sat receiver in MPEG-2 transport stream (mpeg2video) format. The recording starts before the actual movie, so it usually only has a single (local) audio stream in the ...
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7 views

Is there anyway to que voice to light effects in Sony Vegas Pro 17

I know the title is confusing, and that's because i'm not sure how to say it. I was thinking of in my videos having a little thing in the corner which lights up whenever me or one of my friends is ...
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1answer
18 views

Exclude audio from time remap

I am working on a project, I have separate a audio layer and a video layer (with the audio muted) and I have applied time remapping to the video layer. The issue is now that whenever the video slows ...
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1answer
50 views

Remove (or reduce) background music, and emphasise the background voice

I have a video with some people talking, but the music cover the people voices. I can find the music with app like Shazam. I know that remove the music is impossible. There is a way for reduce the ...
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1answer
25 views

how do I can check whether a sound clip I want to use is copyrighted? (I want to use it in a video and an app also)

as mentioned in title, I want to be sure that a sound I found on youtube (2 seconds long) is copyrighted (and also, if I will modify it (in audacity or something) will it still break copyright laws?)
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15 views

Audio distoreted after exporting on Premiere Pro

I just finished my video on premiere pro. The sound is nice when I'm listening to my premiere pro's video; however, my audio is distorted once I exported. I already used premiere pro before for a ...
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6 views

Audio/Video “Drift” on Mac (even when recording them using separate apps)

I have an older version of Screenflow (ver 6.x) and I find that it's getting so that my videos are falling out of sync with the audio (only noticed this lately, not sure if it is tied to newer ...
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1answer
77 views

Premiere Pro: How to sync speed ramped audio with video from linked After Effects comp?

When linking an AE comp through PP, the audio won't sync. This has been an issue forever. I film skate/bmx videos and it's essential that the speed ramp syncs with the audio so you can hear the cool ...
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1answer
50 views

How to automatedly synchronize video recording with pre-recorded music track?

When they film music videos ---ones that require the artist to lip sync in cooordination with a pre-recorded song--- do they synchronize the moment that the cameraman hits the record button on the ...
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37 views

5.1 audio on YouTube videos?

How do I get Stereo + 5.1 for YouTube videos? It has been a long time since somebody made a question about this topic on this forum and lots of stuff have changed sice then. So does YouTube support 5....
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49 views

ffmpeg: can't loop over files in folder to remove audio track f was unexpected at this time

I have a folder with .avi files: dogs dog1.avi dog2.avi ... Each .avi file has 2 audio tracks. I want to remove the first track. I can do if for one file like this: ffmpeg -i dog1.avi -map 0 -...
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72 views

How to input noise values in dBFS for ffmpeg silence detect

I used the silencedetect of ffmpeg with noise value of -30dB to get the silent parts of a small video file & used those timestamps to trim & re-encode the silent parts of the videos. I had ...
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1answer
152 views

What cable type (TRS or TRRS) is appropriate for connecting my Zoom H5 to my Sony A6400?

So, I have a Sony A6400 camera that I want to connect directly to my Zoom H5 audio recorder in order to record my sound directly onto the camera video without bothering to sync it up in my post ...
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15 views

Clip super loud after embedding

With Premiere Pro 14.8.0 on Mac OS I have a simple project. In one wequence I have 1 single video and one audio: The audio is nice and normalised, sounds perfectly all right. Then I embed this ...
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2answers
73 views

How to search for a sound in a video

I want to make a compilation video of Tesla FSD Beta's disengagements. When FSD Beta disengages, it makes a particular sound. I would like a piece of software I can use without having to code that ...
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1answer
50 views

How can I generate voice as someone elses voice?

I dont know if its possible but I would like to create voice similar to Gandalf from Lord of the rings. Is there some app or program which can help me? I know that I can use google translator but it ...
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11 views

Convert MPEG-4 movie file to proper pitch and time-length (currently too fast)

I've got a video of The Band's 1970 performance of Long Black Veil. It is in the key of Ab instead of G and the video is shorter in length as a result; it is a half-step up in pitch and x-seconds ...
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7 views

How can I automate cutting a video along loud beep sounds?

I recorded videos (mp4) of participants in an experiment doing a task at a laptop. There are three tasks, at the beginning and end of which there is a loud beep sound. I would like to automatically ...
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1answer
22 views

How does Premiere Pro keep markers on audio files even after export?

I opened a project with video and audio, and the audio had markers done in Premiere Pro (right-click on the playhead -> Add Marker). Then I exported the audio to AIFF. And then I imported the AIFF ...
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22 views

ovelays not embedding properly and no audio

I have a bunch of small mp4 files (without audio), and an mp3 audio file. Using the concat protocol, I concatenated them with -shortest flag ffmpeg -f concat -safe 0 -i "list.txt" -i ".....
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15 views

Move videos audio track few miliseconds further

My videorecorder made audio out of sync few miliseconds. Is there any way how I can fix all the footages in my timeline in Final Cut pro ? If not, maybe I can use ffmpeg to fix them at once somehow ? ...
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1answer
60 views

Is there a way to smooth random audio dropouts with ffmpeg or Premiere?

I have large amounts of footage with audio tracks that have random dropouts throughout which last for ~0.5 seconds each (all audio dropouts are consistent in duration). I need to smooth out the drops, ...
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1answer
62 views

Combining a short video and long audio file efficiently using Vegas or FFMPEG

I have a need to repeatedly create videos that have a short 15 second intro that fades to black and have really long audio tracks like 8 hours. I generate the video in Vegas and the audio in Cubase. ...
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2answers
185 views

ffmpeg + libfdk_aac + vbr => wrong “BitRate_Mode”

I'm trying to encode sample video clip or audio track with ffmpeg and libfdk_aac with variable bitrate mode-vbr 3: ffmpeg -i sample.mp4 -crf 21 -vcodec h264 -acodec libfdk_aac -vbr 3 -ac 2 out.mp4 ...
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What is involved in the film/sound synchronization process?

The title says it all: what is involved in synchronizing a film's audio and visual elements, particularly in regard to music. Given 30 seconds of video and 30 seconds of music meant to accompany it, ...
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6 views

Unable to Export Audio

I'm trying to export audio in version 20.08.1 by going to Clip > Extract Audio > Wave 48000HZ, but nothing happens every time I've tried. I can continue using Kdenlive, so it's not like it's ...
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9 views

Finalcut creates echo on export

I encountered an issue, that I can't figure out. In a simplified form: I have an audio track, I perform some volume adjustments, other basic settings, add a gain effect. It all sounds good in the ...
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13 views

Auto-combine and sync video of one file, with audio of another

⌘ On Mac, How do I automatically combine 2 files with similar video data, using: 1 file with good video, 1 with good audio, and have them auto-sync via matching video frames? 📄 Provided files Say I ...

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