Questions tagged [audio-conversion]

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Need help converting a .wav RIFF WAVEfmt to MP3

I have a couple of .wav files from a Palm Pilot or possibly an old Windows Pocket PC that are in the format of a .wav RIFF WAVEfmt file. I can't play them, and would like to convert them to some ...
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  • 251
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102 views

can't get ffmpeg to output and recognize "5.1(side)" audio channel layout

I have a VOB file from a DVD. The audio stream is 5.1(side) which can be verified using ffprobe. When I convert the VOB to mp4 using ffmpeg (for example, using the simple command ffmpeg -i video.vob ...
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  • 169
1 vote
1 answer
46 views

FFMPEG - COPY MKV to MP4 but add 2.0 Stream

Morning All, Using FFMPEG currently just to re-container UHD MKV into MP4 with... ffmpeg -i File1.mkv -c:v copy -c:a copy -strict -2 File1.mp4 But these MKV only have TrueHD or DTS-HD which is fine ...
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137 views

How to split m4b file into many tracks on linux

I do have an audiobook with m4b extension, and I wish to split it into many tracks so that it becomes more manageable on my mobile. Through splitting m4a into multiple files with ffmpeg, I ...
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1 answer
80 views

How to convert a certain program's audio output to mic input

I have Program A and Program B -I want Program A's Sound output to be received as a Microphone input -I want Program B's Sound output to be received as a normal sound output Is there a way i can do ...
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1 answer
91 views

Turning a 5.1 .mkv into 2.0 or 2.1

Is it possible to turn a mkv file that only has 5.1 into a a 2.0 or 2.1 (or maybe just add 2.0 and 2.1 as an additional sound track) without touching anything else. Is this possible?
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22 views

VLC: Automatically adjust number of channels when converting videos

I'm trying to convert mp4 files to mkv files with VLC media player. I can't find a way to automatically adjust the amount of audio channels or the bitrate to match the original file. So for now I'm ...
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2 votes
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Can I get separate output on retasked jacks?

I'm using realtek audio console, and I've retasked my mic jack to speaker output. I wanted to have two separate output(2nd output), but instead I got only one, and 2nd output activates only when front ...
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1 answer
159 views

ffmpeg: correct syntax for multiple audio filters

I want to apply three audio filters: pan --> dynaudnorm --> volume. The problem is that the middle filter (dynaudnorm) is ignored. For testing, I've tried rearranging the filters, and no matter ...
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268 views

How to convert VBR OGG Opus audio to M4A ACC without quality loss?

I got some audio files in the OGG Opus format (~152kbit/s VBR, 48kHz sample rate) and I want to convert it to M4A ACC format without any quality loss. I tried to use ffmpeg -i myaudio.ogg -c:a aac -vn ...
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How to convert to .amr using Wavepad Audio Editor?

According to https://www.nch.com.au/wavepad/kb/1414.html WavePad both reads and exports/saves to .amr but how? This is how my save dialogue looks: No .amr-option there as far as I can see? Looked ...
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  • 542
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1 answer
190 views

Audio - format and bitrate effect on quality

I have been interested in audio and improving its quality for a while now and after researching for a while I found out how difficult it can get when you find the answer to a question and then find a ...
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1 answer
296 views

using ffmpeg, how would i be able to transfer/convert id3 tags (artist, track name, album art etc) from mp3 to oga (opus)?

simple question, but i haven't found any simple answers (that worked). i would prefer to not have to apply them using different software, but if necessary, a batch converting .sh template would be ...
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1 vote
1 answer
2k views

ffmpeg with blackhole audio "crackling" noises, why?

So I think the title explains most of this, I am trying to record my screen on macOS catalina using ffmpeg while directing the audio in using blackhole I am getting audio in but the sound is crackling,...
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-1 votes
1 answer
235 views

Connecting USB B hardware to USB C port

Are there any drawbacks when connecting a device using USB B into a USB C port on a laptop? Will any USB B to USB C cable yield the same results? Specifically, I am looking into USB audio interfaces. ...
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1 vote
1 answer
2k views

ffmpeg loudnorm: normalize audio volume with two pass

https://trac.ffmpeg.org/wiki/AudioVolume#LoudnessNormalization However, it is recommended to run the normalization with two passes, extracting the measured values from the first run, then using the ...
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254 views

Convert .wav to .mp3 with specific codec using LAME

I have two audio files, One is .mp3 format ( extension is .wav but the file is .mp3 ) and other is actual .wav format. I am trying to convert actual .wav format same as first .mp3 file. First .mp3 ...
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54 views

Merge (concatenate) files with ffmpeg, specifying start time for each file

I have bunch of audio files, e. g.: audio001.wav, audio002.wav, audio003.wav etc. I need to merge all files together specifying start position for every file, like audio001.wav should start on 00:00:...
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0 votes
1 answer
1k views

Casting to chromecast, no sound

When I cast a movie to chromecast, I get no sound. So I decided to convert the original video from eac3 audio encoding to mp3. `ffmpeg -i media-original.mkv -vcodec copy -acodec mp3 media-mp3.mkv` ...
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1 answer
86 views

Logarithmic curve for audio correction in ffmpeg

I need to apply only logarithmic amplitude correction to audio files, without time effects influence. In order to demonstrate how do I want to transform an audio, I synthesed an original triangle ...
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1 vote
1 answer
108 views

Converting one .ts file into a number of .flac files

I have a 45 GB .ts file of a concert. I want to take just the audio of the file and convert it to a series of .flac tracks. I tried to use vlc to convert the audio to .flac and then cut that file into ...
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1 vote
1 answer
185 views

What bitrate should I use when extracting channel from mp2 to FLAC with ffmpeg?

I have a stereo mp2 audio that I want to extract the right channel to a mono FLAC audio. The detected info of the mp2 is this: Audio: mp2, 44100 Hz, stereo, s16p, 224 kb/s I ran the extract command ...
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  • 113
1 vote
0 answers
279 views

Audio encoding with 2 passes in ffmpeg

I have a video with a DTS audio file that I want to encode on android. Now, on my laptop I had an old GUI that had the option to encode audio using 2 passes. I have FFmpeg on android but I don't know ...
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0 answers
322 views

"Error splitting the argument list: Option not found" or "At least one output file must be specified" depending on the arguments I choose

I'm running into ffmpeg giving me errors when trying to pass arguments to it using an interface I'm creating in XCode/Swift for converting audiobooks. What ffmpeg should be receiving is: inputPath = ...
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0 answers
294 views

Flac error when decoding

I have a song that cannot be converted or decoded or played with any player. When I use a flac frontend to attempt decoding i get the error: flac: ERROR, --until value is before --skip point ...
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10 votes
4 answers
5k views

Which audio encoders in FFmpeg support 8 kHz?

I have an old video (made by a Casio Exilim EX-Z40, if it matters), whose audio stream ffprobe reports as pcm_u8, 8000 Hz, mono, u8. I would like to transcode it into something modern. Transcoding ...
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0 votes
1 answer
603 views

ffmpeg - Encode audio as list of samples

I would like to produce a numeric list of amplitudes from an audio file. I should be able to: Specify the sampling rate (16kHz, 44.1kHz, etc) Specify the data type of the amplitude samples (8 bit ...
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  • 103
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0 answers
159 views

How to split video files upon detected change in speakers? (ie. different file for different speaker)

I have an audio file that have 2 speakers . Audio file has conversation between them. I want to split that file in 2 parts. One part should have conversation of Person A and other should have ...
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0 answers
397 views

In FFmpeg .wav to .wav conversion Header files are not matching

By using below command changing the channel map but after successful run input wav file header is not matching with an output ffmpeg -i in.wav -af "channelmap=13|14|15|0|1|2|3|4|5|6|7|8|9|10|11|12" ...
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0 answers
174 views

How to batch convert a specific DTS audio track language of multiple MKV files to Dolby Digital?

I now the tool PopCorn MKV AudioConverter to convert all DTS audio tracks of a MKV file to DD. It is able to convert multiple MKVs in a folder as well. But it is not able to convert only if: - MKV ...
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1 vote
0 answers
236 views

FFmpeg add music to background of video quietly (volume control)

I'm currently able to combine a video file and an audio file. The video has its own audio track. ffmpeg -i videoAndAudio.mp4 -i backgroundMusic.mp3 -filter_complex "[0:a][1:a]amerge,pan=stereo|c0&...
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0 votes
1 answer
7k views

How to convert raw PCM data to a valid WAV file with ffmpeg?

I run this command: ffmpeg -f f32le -i pipe:0 -f wav pipe:1 ffmpeg version 4.1-tessus https://evermeet.cx/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers built with Apple LLVM version 10.0.0 (...
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0 votes
1 answer
96 views

Can I safely connect audio out to audio in with an aux cable?

This question might be really dumb. But can I safely connect the audio output from one pc to the audio/microphone input on another pc, using an aux cable? I want to record audio from one pc on another ...
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0 votes
1 answer
821 views

convert youtube audio to wav for linux without ffmpeg or avconv

Is there a simple command-line utility for unix available to use to convert an .m4a audio file or .webm file (that I can generate from youtube-dl) to a wave (.wav) file? I tried ffmpeg and it gives ...
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11 votes
2 answers
16k views

How to compile the best version of FFmpeg for Windows

It's generally accepted that, due to licensing reasons, the pre-compiled Windows executables of FFmpeg come out of the box with lower-quality encoders - particularly when it comes to the default AAC ...
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700 views

Can I extract music from a .dll file?

There's an old Japanese PC game called EGG MARKET (eggm06c29_20040118.zip) that I want to extract the music from. I have no idea how to play the game itself so I may not be able to just record every ...
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1 vote
1 answer
1k views

Using ffmpeg apply audio filter dynaudnorm to multiple audiostreams in avi

I have a avi file video-double-audio.avi with 1 video stream and multiple audio streams # ffprobe video-double-audio.avi ... [avi @ 0x559498d59080] non-interleaved AVI Input #0, avi, from 'video-...
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1 vote
0 answers
664 views

How to encode a 32 bit ALAC from a RAW using FFmpeg

Trying to compress a 32 bit floating point waveform (raw binary). FLAC is out because it only goes up to 24 bits per sample. ALAC can handle 32 bits per sample. I can encode directly from RAW to ALAC ...
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2 votes
2 answers
3k views

Handbrake’s stereo downmixing of an MKV 5.1 audio track results in “Center” being right channel and practically nothing is the left channel

So I have successfully used Handbrake (version 1.1.2) to convert many large MKV files into smaller, iOS and macOS compatible video files I can play on my iPhone and MacBook Air for a while without ...
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1 vote
1 answer
2k views

Downsample FLAC file if greater than a certain sample rate?

I want to convert a whole bunch of FLAC files to ALAC using a tool like ffmpeg or sox. This by itself is easy enough with a single command line. However, I want to save disk space by downsampling only ...
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  • 161
0 votes
1 answer
956 views

Connect a USB Digital-to-Analog Converter (DAC) to a monitor

I have a Digital-to-Analog Converter (DAC) directly connected to my computer and want to also use it with my monitor (no USB port) which is connected to some other devices (such as gaming consoles). ...
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2 votes
1 answer
797 views

Windows Batch & VLC Issues

Currently I am attempting to write a batch file that recursively converts all .wav files in my folder into .ogg files and places them into a folder on a different disk using vlc's command line ...
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1 vote
1 answer
397 views

Randomly select 10 seconds from mp3 files

I have a directory tracks with 3 files track1.mp3, track2.mp3, track3.mp3. I want to select a random chunk of 10 seconds from each file and combine these chunks into a new file called sample.mp3. How ...
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6 votes
2 answers
5k views

How to convert audible AAX file to M4B format, while preserving all information (including artwork)

I tried to find a solution that will allow me to batch-process a whole bunch of AAX files (which I bought over the years) into M4B. I tried using the audible-activator in order to extract the secret, ...
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0 votes
1 answer
2k views

Merge 2 audio tracks into one inside mp4 without re-encode video?

New Nvidia Share allows record videos with two audio tracks: one with in-game audio and second with microphone audio. How can I merge the audio tracks into one without re-encode the video? If ...
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  • 223
5 votes
1 answer
8k views

FFmpeg `Guessed Channel Layout for Input Stream`

Consider a simple FFmpeg conversion, such as: ffmpeg -i dream.wav dream-ffmpeg.mp3 -y It produces the following warning: Guessed Channel Layout for Input Stream #0.0 : mono How can I tell FFmpeg,...
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0 votes
0 answers
923 views

Batch convert with video passthrough, audio recode

How do I batch convert all files in a directory from mkv to mp4 where the video is passed through (not re-encoded) but the audio is converted (re-encoded)? I thought it would be something like: for ...
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  • 51
4 votes
3 answers
32k views

Extract High Quality vs Original quality audio from YouTube?

The name of the program being used is 4K Video Downloader. Question is, if for example, the Original Quality says it's 128k, is it really going to get any better if I try to extract it with High ...
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  • 165
0 votes
2 answers
157 views

Recover original MP3 from decoded WAV

I have a CD that was made from an MP3 source. I have since lost the original source. Is it possible to reconstruct the original source from the decompressed audio on the CD, the goal being to save ...
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0 votes
1 answer
2k views

conversion backward from mp3 to oma

My wife has a very old Sony walkman which plays audio files in a special format: oma. The software has stopped working and seems not to be supported by Sony any more. I thought I might try to ...
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