Questions tagged [audio]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
13 views

How to delay beginning of audio without re-encoding?

I have a file containing both video and audio stream. I want to delay the audio by 5 seconds relative to the beginning of the video, without having to do any re-encoding. The command I tried was: ...
finefoot's user avatar
  • 121
0 votes
0 answers
11 views

Galaxy A03s Not Recording at 30 FPS Constant - Mouth Movement and Audio Out of Sync

I have an unlocked Samsung Galaxy A03s [1]. Per the Samsung website, it's supposed to be specked at FHD (1920 x 1080)@30fps. Unfortunately, I almost never get it to actually record at 30fps constant. ...
Shawn Eary's user avatar
0 votes
1 answer
17 views

What can be done in this video to solve "the air-conditioning problem"?

This lecture seems to have been filmed in a classroom with ar conditioning. I can see the professor is using a microphone that's very close to his mouth. I would like to also record lectures like ...
user43904's user avatar
0 votes
0 answers
39 views

ffmpeg copy some audio streams and re-encode some audio streams

The Problem I have a mkv file that contains audio in a format that not all my devices support. To get full support, I want to copy that audio and convert it while retaining the original audio. Input: ...
not_anyone's user avatar
0 votes
0 answers
22 views

Processing h264 video/audio stream

I have separate raw audio and video frames from a camera that I'm trying to merge to a single file. Video processing I have JVT NAL sequence, H.264 video, main @ L 31 data, I had the frames separated ...
Dinamo's user avatar
  • 1
1 vote
0 answers
20 views

How to get a 7.1 PCMle encode in an MOV container to stay a single track while also rendering as 8 mono tracks in an NLE like an MXF container

I've been trying to convert Blu-Ray footage to the most efficient, yet least time consuming format for editing footage from them. For a while, I would make an MXF container and encode the h264 to ...
varys_da_spidah's user avatar
0 votes
0 answers
27 views

Downloading an HLS stream: ONLY in sync when downloading with ffmpeg. Possible explanations?

I'm trying to download a livestream that is just a plain hls with no encryption. I usually use streamlink, but this site I'm trying to use recently doesn't output a correct video/audio synced output ...
R.JEON's user avatar
  • 1
0 votes
0 answers
7 views

Audio missing from clips, standard solution not working

Adobe Premier, Windows 10: I accidentally deleted some audio from some clips I had edited in the timeline by just moving one clip's audio over the other clip's audio in the same audio lane. I have ...
jedbeetle's user avatar
1 vote
1 answer
163 views

Setting the default subtitles

I managed to create the subtitle file, using different language with one single FFMPEG command: ffmpeg -y -loglevel "repeat+info" -i "file:Intervista.mp4" -i "file:...
Nicola Lepetit's user avatar
0 votes
0 answers
23 views

Why does removing an audio track in Handbrake reduce volume?

I am transcoding a couple of blu-ray videos using Handbrake (v1.2.2). I play the resulting MKV containers mainly using Video LAN Client (VLC). Often a blu-ray has several audiotracks that are ...
Peter Rottengatter's user avatar
0 votes
0 answers
13 views

Where to find alternative audio tracks for TV series

How can I add several audio tracks with different translations to a series, as film sites do in some series with 10 translations, where can I find them?
Aleksander's user avatar
1 vote
0 answers
28 views

ffmpeg - converting one audio track of a multi-track mp4

I'm having a few mp4 with two audio tracks, an english one in aac and a french one in dts. Now I want to convert only the french dts to eac3 with a single ffmpeg command. I use ffmpeg -hide_banner -i ...
Shaun.M's user avatar
  • 11
0 votes
0 answers
126 views

kdenlive no audio in rendered video

operating system: ubuntu 22 kdenlive version: 21.12.3 Audio is available in editing mode and can be played, however, after the project is rendered/exported into a file, video is fine but there is no ...
GeauxEric's user avatar
  • 101
0 votes
1 answer
174 views

Possible to force FFmpeg to omit silence in audio files and produce discontinuous `webm`/`mka`?

Does webm/mka/mkv/mp4 support discontinuous audio streams? I'm wondering, can ffmpeg transcode .wav-audio into opus-encapsulated-into-webm, but filter out silent frames - especially full seconds of ...
Vadim Kantorov's user avatar
0 votes
1 answer
59 views

Combine images and draw text on each image with animation xfade

I am using ffmpeg to merge multiple images and an audio to produce a video. I am using drawtext and xfade with dissolve transition. My ffmpeg command is given below. ffmpeg -loop 1 -t 5 -i ./img/img0....
Imran Khan's user avatar
2 votes
0 answers
51 views

Cutting and rejoining videos causes audio de-synchronization using ffmpeg

I'm trying to cut a video into pieces and rejoin them using ffmpeg on Windows 11 x64. Here's the details of ffmpeg: ffmpeg version 2023-11-22-git-0008e1c5d5-full_build-www.gyan.dev Copyright (c) 2000-...
Donotalo's user avatar
  • 121
0 votes
1 answer
137 views

ffmpeg from 5.1 or 7.1 audio in separate mono streams to stereo

I have a file with 7.1 audio, where each channel is in a separate mono stream. How can I convert all these mono streams to plain stereo? (The documentation suggests to use the -ac 2 option, but that ...
mivk's user avatar
  • 577
0 votes
0 answers
45 views

Davinci resolve stops generating subtitles in specific part of timeline

I'm having an issue generating automatic subtitles over a specific portion of my video. it worked just fine scanning the middle to end but it only gets off 2 subtitles in the beginning then stops for ...
desperrrr's user avatar
  • 123
0 votes
0 answers
46 views

variable timestamps for audio samples in MP4

Consider the following ffprobe output for a MP4 file. This is an extraction of first 10 frames in the audio stream and its metadata. The audio stream has a sampling rate of 48000, and is encoded with ...
userDtrm's user avatar
  • 141
0 votes
1 answer
32 views

How can i go higher than the frequency limit set on EQ band 6 automation in davinci resolve

Very new to audio stuff so sorry if i get some terms wrong in advance. I'm using automation to keyframe the frequency on band 6 in the EQ as shown here Even when it hits the bottom, i still dont feel ...
desperrrr's user avatar
  • 123
0 votes
0 answers
10 views

Need a program to make youtube videos with

I'm currently working on a youtube project with guitar playing in the videos. Is there any one program I can use to do this? I don't mind if it's paid or free. I need to capture both audio and video ...
selectstart's user avatar
0 votes
0 answers
19 views

Stripping audio and subtitle tracks and converting subs to ones that LG C2 Media Player recognises

I have a complicated video file (.mkv, 12.78 GB, 2160p) with two audio streams (MLP FBA 16-ch and AC-3, respectively), and 11 subtitle streams (all of format PGS and Muxing mode zlib). The native ...
Jos van Nieuwman's user avatar
0 votes
0 answers
69 views

Frame-perfect audio cutting using ffmpeg filter graphs and frame filtering

I'm curious, is it possible to do frame-perfect audio cutting using ffmpeg's complex filter graphs + frame filtering aselect functionality? I've tried a bunch of other approaches (using -segment_times ...
Vadim Kantorov's user avatar
1 vote
1 answer
51 views

Should this audio file have ogg or opus as file name extension?

bash $ mediainfo myaudio.opus General Complete name : /Users/qaz/myaudio.opus Format : Ogg File size : 3.52 ...
qazwsx's user avatar
  • 133
0 votes
1 answer
23 views

Video editing software that automatically performs search-and-replace

My employer owns a number of video recordings that discuss a company product. Many of those videos were created using Camtasia, a commercial video editing software product. The video recordings ...
suono's user avatar
  • 3
0 votes
0 answers
31 views

FFmpeg - Take 128 Channel WAV and Transcode to MKV with 128 Discrete Mono Tracks

I have a use case where I need to take individual WAV files with 128 channels in each one and output corresponding MKVs with each source channel as its own discrete mono track. I've been playing ...
Matt's user avatar
  • 1
0 votes
1 answer
28 views

Why can't I render these videos without audio being out of sync?

I've pulled out all guns to merge 13 episodes into one video, failing and staring at a brick wall. I've rendered on KDenlive in Linux and Davinci Resolve on Windows. I even screen recorded the whole ...
progonkpa's user avatar
  • 113
0 votes
0 answers
63 views

How to add audio every x time [ffmpeg]

I have a file video.mp4 and file audio.mp3, how to with the audio inserted every 2 seconds of video i try it but doesn't seem right. Please help me! ffmpeg -i video.mp4 -i audio.wav -filter_complex &...
Muon Roi's user avatar
0 votes
1 answer
38 views

how to extract segment of input.mov, loop an image at the end, and then replace audio with segment of audio file?

I've got a movie that I captured with my iphone. Let's call it input.mov. Having edited this video using my iphone, it appears to have dimensions of 1370x970, at least according to the iphone's ...
S. Imp's user avatar
  • 103
0 votes
1 answer
82 views

using ffmpeg, how to concetrate multiple videos into one, but audio will be sync per video in linux?

using ffmpeg, using ffmpeg, how to concetrate multiple videos into one, but audio will be sync per video in linux? I have tried async, vsync, atempo but i dont know how make ffmpeg to autosync audio ...
Estatistics's user avatar
0 votes
1 answer
142 views

ffmpeg - Copy the first 2 tracks of audio to new 6 tracks so all 8 tracks contains audio from the first 2

I have a 2 audio track mxf file and need to clone the video but create 8 audio tracks. The tracks 1 and 2 should be copied into 3 and 4, 5 and 6 and 7 and 8. Some files that I'm dealing with are 4 ...
igor's user avatar
  • 1
1 vote
1 answer
251 views

Adobe Premiere Pro clip audio works in Source panel but not timeline

I have a Adobe Premiere Pro CC 2017 project with an mp4 in the sequence. That mp4's sound plays fine in Source Monitor. And its sound plays fine if I right-click the mp4 in the Project panel and ...
Ryan's user avatar
  • 245
0 votes
1 answer
418 views

opus decoding in ffmpeg: how to pass target sample rate and ensure libopus decoder?

As I understand, ffmpeg compiled with --enable-libopus has two opus decoders: builtin and libopus. I am decoding an opus file to wav. How can I know which opus decoder is being used by ffmpeg? ...
Vadim Kantorov's user avatar
0 votes
0 answers
97 views

Why is ffmpeg modifying my 5.1 channel layout?

I have an AC3 sound file in 5.1 surround, and an MOV file with no sound. I am using FFMPEG to add the sound to the MOV file, and although it works succesfully, for some reason it is modifying the ...
dongle's user avatar
  • 61
1 vote
1 answer
32 views

2 video files, one has the audio with 15FPS, the other has the video with 5FPS, audio is out of sync

I'm trying to sync the audio and video of 2 different files, one is a 15 FPS webcam stream with audio and the other is a screen share with 5 FPS. This is an educational setting. I'm trying to do the ...
user5688333's user avatar
0 votes
0 answers
12 views

Why the DSLR camera audio was set at -12 db?

From the online youtube videos It was mentioned that the professional audio equipment was usually set at -18 dbfs while the home ...
ShoutOutAndCalculate's user avatar
0 votes
1 answer
376 views

Using ffmpeg audio filter loop instead of stream_loop as stream_loop adds a delay

I want to loop an audio file infinitely. The -stream_loop -1 option adds a small pause / jerk between the loops, as also mentioned in this question with no solution. The same question mentions that ...
workwise's user avatar
  • 101
0 votes
1 answer
313 views

Can FFmpeg perform audio phase subtraction?

I can do audio phase subtraction in Adobe Audition like so: How can I do this with FFmpeg? Is it possible? I've googled for audio phase subtraction, and looked at ...
Calarpo's user avatar
  • 31
1 vote
0 answers
68 views

Premiere Pro offline transcription engine via CLI?

How can you access Premiere's local transcription engine outside of Premiere? Is there CLI access? I want the raw (hopefully JSON) data for analysis and additional per-word processing with time codes.
BreadEagles's user avatar
0 votes
1 answer
21 views

Removing parts of audio while leaving other parts intact

This is a bit of a niche question but, I recorded a video with a strange bird call that I was going to post somewhere for someone to ID it but there were people talking so you can’t hear the bird call ...
Tip11000's user avatar
0 votes
1 answer
27 views

Recording webcam got too big file in 12 hours, spliting the file takes much less space

Sorry I do not give better details, I am too new on this this weekend we left OBS recording a small portion of the screen, with audio, for an university experiment (we have a software that analize ...
Carlos Tiel's user avatar
0 votes
1 answer
128 views

ffmpeg how to change audio tbn

I changed my video container with: ffmpeg -hide_banner -y -i in.mkv -c copy -video_track_timescale 1k out.mp4 But video_track_timescale only changes video tbn, not audio tbn. To check it: ffprobe -...
kwjsksai's user avatar
  • 103
0 votes
1 answer
14 views

Missing speech at a certain part of video

new here and to video production in general. The issue I have is audio-related. Background: I have this video clip made by a vendor - it has background music, speech, visuals, etc. The video clip ...
user40645's user avatar
0 votes
1 answer
27 views

Syncing hard-coded text with audio

Perhaps too basic for this forum... but it might help someone in the future. I want to make translated lyric videos, with the lyrics hardcoded onto the video (English on top, my translation in my ...
maliebina's user avatar
  • 101
1 vote
0 answers
20 views

Is there a video player that allows to reproduce one audio track through left channel and the other through right one?

I hope this is the right place... I normally use MPC-BE and MPC-HC (which has quite audio processing options including a custom channel mapping, although it doesn't seem to go that far with tracks), ...
Rai's user avatar
  • 111
1 vote
0 answers
32 views

Will moving a sound source in ATMOS just "blend" the sound, or will it create a Doppler-effect?

Intending to make a test video using Dolby ATMOS in Resolve 18.1 I wonder: When I have a sound recorded at some fixed spot, and I want that sound to move in space via the ATMOS controls, will Resolve ...
U. Windl's user avatar
  • 154
0 votes
0 answers
51 views

audio never lines up with video correctly

I'm using audacity to record my mic at 44100 hz and using obs studio to record my screen at 60 fps. when I start recording, I enable my mic on obs for a few seconds while audacity is also recording to ...
desperrrr's user avatar
  • 123
0 votes
1 answer
58 views

What adapter do I need to merge two microphones as L and R channels?

I have a video camera and two lavalier microphones which both come with 3.5mm audio connections. My camera only has one 3.5mm microphone input port. I would like to mix both microphones, which are ...
Dmitri Nesteruk's user avatar
1 vote
0 answers
162 views

Need help compiling a custom, minimal FFmpeg build

I'm using FFmpeg's showspectrumpic function to generate spectrogram pictures : I have a working FFmpeg build that does what I need, but it's quite heavy (almost 100mo). Is it possible to compile a ...
holybobine's user avatar
2 votes
1 answer
723 views

ffmpeg - How do I modify Channel Layout labels only on 8 separate mono audio tracks?

I have a QuickTime .mov file which has 1 video track (ProRes 4444 XQ) and 8 mono audio tracks, which combined make up the 5.1 surround mix and a stereo mixdown. Per delivery requirements, I need to ...
Jonathon Irons's user avatar

1
2 3 4 5
10