Questions tagged [audio]

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

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15 views

“Cannot find a matching stream for unlabeled input pad 2 on filter Parsed_amerge_2” ffmpeg

The error I'm getting is in the title. I want to merge the two audio streams from a video into one (yes, I've checked if there is two and there is). This is the command I'm using: ffmpeg -i input.mp4 -...
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8 views

Is there a list of all programs that can be used for livestreaming?

We know that SLOBS and OBS Studio are used for livestreaming. Is there a list of All (most?) programs that are used for livestreaming? Hopefully identified as video oriented; as well as gaming ...
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What are the considerations for a church to pick their best overall livestreaming system? Pros and Cons!

What should a church consider for livestreaming? Please give all cons as well as all pros to consider. In particular audio levels to AM/FM as well as utoob and facebook are key items. What factors ...
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What is the best way for a church to stream video of Sunday sermons? And related questions too

What is the best way for a church to stream video of Sunday sermons? We are using volounteers to do both video and audio tasks. Simplicity is important. We dont need 8kTV with fancy features like ...
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1answer
16 views

Adobe Premiere won't update audios

I'm having a problem where if I edit an audio clip that is used in my Premiere project with Audition, the change isn't heard in Premiere. Here are the steps that I'm going through: I have an audio-...
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Does sound from boom operator mic end up being used in final mix in high end production or only used as reference for voiceover?

It seems like it is usually very noisy on set, I hardly can imagine that the sound from boom mic is good enough, so I wonder about its true purpose 🤔
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1answer
51 views

How to fix this screwed part of Audio

i am new to video production , and i know that audio is a big part of the production process and cannot be messed up . here is a audio that i recorded and then reduced the noise from audacity and ...
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14 views

Add external mic using Sony “A/V R” plug

I have a Sony HDR-CX100 video camera that I would like to connect an external mic to (3.5mm plug), but the camera has no dedicated mic input. However, it as an "A/V R" plug: Before you say &...
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1answer
16 views

Loop images until the audio ends

I have an audio file 2 hours long and 30 still images related to the audio. I would like to display each image consecutively for about 45 seconds while the audio is playing in a repeating fashion. ...
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1answer
22 views

Premier Pro Audio Quality Poor and Muffled After Export

I’m currently exporting a video on Premier Pro using the default YouTube 1080 HD settings. Usually, my videos export with no problem, but with this video, my exported audio is extremely muffled, even ...
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1answer
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What is the meaning of “channels” in an audio recorder program?

I compiled and ran this audio recorder program derived from JUCE: https://gitlab.com/DamienAuvray/simpleaudiorecorder I can see that it has the options of selecting channels. I am a newbie in this ...
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Seeking for advice with dealing with out of sync audio

I have a bunch of videos from games caputured with NVidia's Share. They are trimmed using VLC. I have one video that is 1 minute and 38 seconds long (a lot longer then the others). If I play it in VLC ...
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2answers
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How do you reduce wind gust sounds from video?

So I've looked at a bunch of videos and all they describe is how to remove ambient wind sounds so that you can hear someone talk. Or how to remove the low hum of wind. And if it's the wind sound is ...
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57 views

How to make a SMALL video from single still image + audio, one key frame and all the rest p frames or whatever

I have a WhatsApp message of 1 hour duration, it is an .ogg audio of less than 9 MB in size. I want to upload it to YouTube, so I have to make it at least a single-frame video. So I made a JPEG cover ...
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Easy way to create AudioGrams, ideally with waveform & Subtitles / Closed Captions with progressing marker on them? Free to start with?

Easy way to create AudioGrams, ideally with waveform & Subtitles / Closed Captions with progressing marker on them? Free to Start with? Easy way to take my writings; quotes, poems or short ...
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Script works on some files in batch but not others, any advice?

I'm trying to convert a batch of (mostly) .mxf files (4 channels of audio) to .mp4 files (stereo audio) taking the first two channels from the source using the following script: #!/bin/zsh for i in *....
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1answer
21 views

Limit the scale of a pick whipped object

I want to make a speaker graphic 'wobble' to different frequencies.. Here's what I've done so far I made a speaker graphic in a comp And I parented the scale to a null in the main comp And I isolated ...
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1answer
18 views

After Effects Audio Ahead of Video in Preview and Render

I was working on my first large-ish upload for youtube, put it together quickly and didn't notice until it was complete that almost the entire video was riddled with audio desync issues. You can find ...
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30 views

Is there a hardware acceleration for audio encoding?

Video encoding with HW acceleration takes way less time than audio encoding. Is there a way to convert ac3 to aac faster?
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27 views

Why does audio not work for this mp4 when played on IPad with headphones plugged?

I'm hosting this video : https://itype.techforge.com.au/assets/videos/repeated/WordRat.mp4. It seems to work fine unless you happen to be on an IPad and plug the headphones in. With the headphones ...
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29 views

ffmpeg: convert an existing audio stream as an additional audio stream (keeping untouched original as well)

I have a video with 1 video stream, 2 audio streams (TrueHD 7.1 and E-AC3 5.1), a bunch of PGS subtitles and chapters. I want to copy the video, convert the 7.1 audio into AAC, copy over the original ...
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1answer
24 views

AfterEffects: How to make audio sine waves like this?

Alright, there are many tutorials on audio spectrums in AE, like https://www.youtube.com/watch?v=H_-aycDYsJM I want to make a visualizer like this, however, where the waves more mimic sine waves: ...
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1answer
71 views

How to filter out overlapping audio? Given a mixed track and one stem track, what's the best way to “subtract” the stem from the mix?

Given two audio streams, I'd like to remove the audio in one stream that also exists in another. In this particular case the 1st stream contains everything mixed, and the 2nd stream contains just the ...
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17 views

Trim Audio Only of a Video file - FFMPEG

I have a mkv file containing a Video 1 minute shorter than audio. I want to Cut out first 1 Minute of Audio Stream. How Would I accomplish That With ffmpeg? I tried -ss 00:01:00.000, But that also ...
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29 views

How to compare the audio/video synchronization in video clips?

I have two video clips of the same music video. Both are made of the same video and audio tracks but of different sources and quality. One of them is a rip from an officially released media, so the ...
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1answer
17 views

Extract audio from a multichannel video file

I have a QT ProRes which has 8 audio tracks. L/R/C/Lfe/Ls/Rs/Ltotal/Rtotal What I need to do is extract the 5.1 (tracks 1-6) into separate individual wav files without recompression and the last 2 (...
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1answer
15 views

Video editing software for easy freeze frame voiceover

I'm currently using Movie Studio Platinum 16. When I need to make a voiceover (e.g. for a product presentation), I like to do it without a carefully planned script, just talking over the video and ...
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1answer
110 views

Working on audio effects for multiple clips at once

My problem is that I have many clips with audio and I need to remove, modify and apply audio effects to all of them at once. Initially, I added an audio effect to a long clip and then I split it in ...
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1answer
26 views

Raising volume of one mic in an audio track to meet others' mics volumes

I have a long video where I and other people talk. Whereas the voices of others sound good, my mic captured mine with a very low volume. The problem is that the video is long and voices alternate, so ...
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1answer
70 views

How can I prevent YouTube from distorting the audio in my QuickTime video?

I recorded about 20 MP4 clips: most on my Android phone with the stock camera, a couple from Facebook (downloaded from the mobile web view), and one from a Zoom session. I cropped or scaled and padded ...
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19 views

How to replace non-looped audio to video as looped using FFMPEG?

my command is this "ffmpeg -i nonloop.wav -i input.mp4 -vcodec copy -max_muxing_queue_size 9999 -map 0:0 -map 1:0 -shortest output.mp4" that produces 0:00:01 duration video with audio ...
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348 views

Normalizing audio output loudness (LKFS/LUFS) in DaVinci Resolve 16

DaVinci Resolve 16 adds a great feature that allows applying "Normalize audio levels" on a clip using the ITU BS.1770 or EBU R128 standards, to a target level of -23 LKFS/LUFS, or similar. However, ...
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10 views

Variable audio drift from screen captured VR project in Unity

I'm new to video editing, and I need to sync up the audio and video from two different sources for a Virtual Reality game. Basically, I have the VR itself running in Unity on one computer, with the ...
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1answer
64 views

ffmpeg add loop to this line of code i have

windows 7 64 bit running latest ffmpeg command-line. ffmpeg -i "song.mp4" -i "2.mp3" -filter_complex "[1:a]adelay=3000|60000[1a];[0:a][1a]amix" -vcodec copy -y "output1.mp4" I want to loop the 2.mp3 ...
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16 views

Play two soundtracks, from an “mkv” movie, on two different devices [closed]

I have "mkv" movies with two soundtracks, one English and one French. I'd like to play the video and the French soundtrack on my TV and the English soundtrack on my bluetooth earphones. Is there a ...
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1answer
118 views

Audio normalization across multiple clips and for Youtube, in After Effects

I am trying to normalize audio between the clips in my timeline, and at the same time I want to make sure that the overall volume matches Youtube's guidelines. I wonder if I can read the peak ...
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175 views

ffmpeg audio ADTS error when m3u8 has id3v2 tag

I'm trying to download a video from a VOD service. But when I access it using ffmpeg and try saving ffmpeg will fail with audio error. If i skip audio I can save the video, no problem. Here is ...
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22 views

Looking for a video editor app with visible audio track of main video?

I am looking for a video editor app on both Iphone and Android phone, better if free and accessible on both platform. I am looking for a video editor app with visible audio track of main video. I have ...
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1answer
21 views

With ffmpeg how do I imply spatial position when mixing mono to stereo

I have a range of mono audio samples and have worked out how to play them at specific time offsets but would like to give some indication of 'where the sound is coming from' I have the x and y centers ...
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11 views

How do I clean up fuzzy audio from internal mic in Lightworks?

I am currently shooting some YouTube videos using a Canon 250D DSLR but haven't gotten round to getting an external mic yet. I'm learning to use Lightworks and am wondering if there is a way to clean ...
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1answer
40 views

What is the typical audio to video sync threshold when it becomes noticeable? [duplicate]

At what point does audio / video delay become noticeable or is there a general industry standard threshold?
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1answer
34 views

Are most scenes in movies voiced over in post production?

In this B roll of Harry Potter, one can see how the same scene (how they walk out of the water and up a hill) is filmed multiple times. I guess that the final scene will be made up by several of ...
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1answer
112 views

kazam no sound and no red border for screencast

kazam worked fine on ubuntu 19.04, recording audio and video, and showing the red rectangular border during screencast recording; after installing ubuntu 20.04, kazam (from the repository) records ...
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70 views

FFMPEG command to mix audio and video with adjustable volume, plays till Video length and loop audio entire video

I have: Video file of X length Audio of Y length I am trying to achieve an output video that has the following qualities: The volume level of the added audio should be adjustable The audio should ...
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6 views

Bell sound coming at the end of the end of the silence layer

This is my first attempt at editing a video(.mp4). I am using VSDC video editor. I am trying to mute a porting on the audio layer. I added a silence portion as can be seen in the image below: ...
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1answer
3k views

Export timeline with multiple audio tracks as video with single audio track in DaVinci Resolve 16

Disclaimer up-front: I'm a beginner when it comes to video editing, so I'm maybe using the wrong terms to describe my problem. The task So I'm working on an OBS recording of myself, where I wanted ...
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33 views

How to generate a silence audio file of accurate duration in milliiseconds using ffmpeg in Node JS?

I am using ffmpeg npm package in Node JS for processing my audio files. My application usecase is that there will be a meeting recording which will happen for every attendee who joins the meeting and ...
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1answer
110 views

FFMPEG how to add image and soundwaves to video

I have an mp3 song that I am making a video for, I also have a background image. My command that doesn't work. ffmpeg -i song.mp3 -i image.jpg -filter_complex \ "[0:a]showwaves=s=3840x200:mode=line[...
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1answer
60 views

Create one split screen video, separate audio streams and a thumbnail from the resultant split screen video - all in one pass

I'm using ffmpeg to create several single splitscreen videos out of 2 separate videos. The 2 videos have audio so I want to extract the 2 video's audio streams as 2 separate mp3s and also create a ...
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4 views

Is there a name for the technique where dialogue pitch is reduced?

I've noticed a video/audio trend recently in media that is satirical or comedic with a serious twist. Usually, a newsreader or presenter, though not always, will be speaking to the camera about ...

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