Questions tagged [wav]
WAV (or WAVE), short form for Waveform audio format, is a standard format audio file from Microsoft and IBM for storing audio on PCs.
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Fix "Non-monotonic DTS" Warning Caused By asetnsamples Filter
I'm using the following complex filter to mute certain parts of an audio file and replace those parts with a beep generated by the sine filter:
[0]asetnsamples=n=1,volume=0:enable='between(t,1.57,1.97)...
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ffplay file.wav 18 audio channels
On Linux I have an 18 channel wav file that I can play with aplay or play(sox) without problems. The 18 channels are played well.
If I want to play it with ffplay I get this:
libavutil 56. 51....
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concatenate flac, opus, wav file parts with ffmpeg
I tried concatenating two flac files with this command:
ffmpeg -i 1.flac -i 2.flac -filter_complex '[0:0][1:0]concat=n=2:a=1[out]' -map '[out]' -c:a copy out.flac
i get the following error message:
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Add timestamps to output? pocketsphinx
Been using pocketsphinx to successfully grab transcripts from wav files, and it made sense to me that there would be an argument for adding timestamps. Actually, there are SO MANY arguments in the ...
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Concatenating multitrack .wav files using ffmpeg
I have 32bit .wav files with around 6 channels, segmented into chunks of 2.15GB. I want to merge the files sequentially, retaining the individual channels. I would assume something like:
ffmpeg -f ...
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Create a limit frequency response range WAV file FFmpeg
I've been experimenting with using FFmpeg to convert modern high-quality audio (44.1, 48 & 96kHz etc.)into analogue type audio which are the old fashions Hi-Fi sounds like the 20 kHz frequency ...
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FFMPEG - Converting from WAV to AAC changes the length of the audio file and causes video to be out of sync
Disclaimer: I am a complete novice at computer science, coding, etc.
TLDR: Converting from wav to aac with libfdk_aac is giving me a shorter file, and using aac it turns out longer. How can I preserve ...
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Trying to convert WAV to HE-AACv2
so I've been trying to figure out how to convert WAVs into HE-AACv2, and nothing seems to be working at all. When I get an output file, it's corrupted. When I don't, it's always some vague error that ...
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I install ffmpeg in the AWS EC2 environment and convert the audio .wav file to .m4a, but I'm having trouble with loud noise
I install ffmpeg in the aws EC2 environment and convert the audio wav file to m4a, but I'm having trouble with loud noise I don't know how to set parameters without noise.
The ffmpeg version is ffmpeg-...
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Trying to trim a WAV file with ffmpeg yields a "Unable to find a suitable output format" error
Here's my command:
ffmpeg -i /path/to/filename.wav -vn -acodec copy -ss 00:00:00 -t 00:13:00 /path/to/filename-0.wav
When I run it I get the following error:
[NULL @ 0x55dfa3f27c80] Unable to find a ...
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How to stretch a wav file to a specific number of samples?
How do you convert the content of a wav file to a specific number of samples, but without adding any silence? I.e. how can you stretch the audio data to a certain number of samples?
Some background ...
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Copy all metadata (Chapters and...) from one wav file to another
How can I copy all the metadata (containing all chapters info) from one wav file to another?
I tried so many different methods, but so far none of them worked.
for example this wont work
ffmpeg -i in0....
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Unable to re-rip CDs in Windows Media Player
Using Windows Media Player to rip my CD collection I had noise issues with MP3 even at highest quality. I have a few dozen ripped this way. I started using WAV format and all is great. I have plenty ...
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Convert wav file from WAV_FORMAT_EXTENSIBLE to WAV_FORMAT_PCM
I have a 16-bit 44.1kHz wav file in WAV_FORMAT_EXTENSIBLE format. What is a simple and efficient way to convert it to WAV_FORMAT_PCM on the command-line?
ffmpeg solutions preferred, but I'm also open ...
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Windows Command Line Join WAV files
Looking to join wav files together with a Win command line.
I need to take different time/sample start/end sections out of a wav file and join them into a new file.
Was looking at SoX but was not sure ...
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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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ffmpeg: Export to 24 bits wave with Microsoft PCM, not Extensible (with Lavf58.76.100)
I notice that, when I use FFMPEG to export a mod to a wave in 24 bits or higher, FFMPEG decides to use extensible encoding instead of regular PCM encoding and uses "Lavf58.76.100", whatever ...
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"Cannot find matching stream" error while using FFMPEG filter_complex to mute selected audio channel
ffmpeg -i stereoaudio.wav -filter_complex "[0:a]atrim=start=0:duration=5[a1];[0:a]atrim=start=5:duration=17,asetpts=PTS-STARTPTS[b2];[b2]pan=stereo|c1=c1[c3];[a1][c3]concat=n=3:v=0:a=1[d4];[0:a]...
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ffmpeg - concatening audio files onto separate channels in one file
I have a list of mono wav files like this
1 speaker1.wav
2 speaker2.wav
3 speaker1.wav
4 speaker2.wav
5 speaker1.wav
6 speaker2.wav
I want to concatenate them so that I get a single file where each ...
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How do I check if a 2-track WAV file is "really" in stereo?
I have an audio file (WAV format to be specific). When I open it with an editor (e.g. audacity), I see two channels I suspect that the recording is actually mono rather than audio, i.e. I suspect the ...
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Windows sounds play from a selection at random
So I'm trying to figure out how to play from my selection of .wav files for a single notification on windows sounds.
Windows will only accept .wav but it needs to be at random from my folder.
I was ...
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Auto Batch Process - Trim, change bit rate and then normalize wav files via sox on Windows
I would like to batch process wav files in a folder:
Firstly trimming the files to 5secs and placing the trimmed files in a folder called "Trim5s", then
Changing the bit rate on the trimmed ...
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Goldwave : create a new 24bit wav - possible?
In Goldwave (v6.50, 2020), it is possible to open a PCM signed 24 bit wav file.
But it looks it is not possible to create a new (empty) wav file with PCM signed 24 bit wav file.
I can't find an ...
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How do I mass-modify the bit rate of WAV files?
I have about 200-250 WAV files that I need to work with in Unreal Editor for a game mod. The editor wouldn't accept WAV files with a bit rate higher than 768 kbps. Annoyingly, the WAV files are mostly ...
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Wave file numerical metadata
Why is all the numerical metadata not stored as ASCII characters? For example, to find the sampling rate, which starts at byte 24, you have to read four bytes and the perform some endian swaps and bit ...
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WebM With a Still Image and an Audio
How can I join together a cover and a music into WebM with the best audio quality using ffmpeg? I really can't figure it out.
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Sox: Read wav and get pulse as 1 and silence as 0 and the duration of it in microseconds
The title of this question is already very clear I quess. I want to read a wav file and get pulses as 1 and silence as 0 and the duration of it in microseconds.
The reason is this, I have recorded a ...
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Why does piped FFMPEG output differ from an explicit file?
The following creates files that have very slightly different toplevel definitions. Why?
$ ffmpeg -f lavfi -i "sine=frequency=1000:duration=1" infile.mp3
$ ffmpeg -i infile.mp3 -f wav - > piped....
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ffmpeg Add audio (wav) to video (mp4) without reencoding video
I was just wondering how to add audio while keeping the pre-existing audio on the video intact:
I have done some research and it seems there was a similar question here:
Add audio to video using ...
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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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"ffmpeg -ss" supported formats for accurate seeking? mp3 does not appear to work, only .wav
ffmpeg -ss 00:00:00 -i 'input.mp3' -to 00:25:00 -c copy output.mp3
I noticed while scripting that this particular script that it works for mp3 files but not for .wav files. What happens is it copies (...
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ffmpeg - How to prevent innacurate duration when converting from pcm to wav?
I have the following command:
ffmpeg -f f32le -ar 44100 -channels 2 -i input.pcm -y -acodec pcm_s16le -f wav output.wav
input.pcm is the pcm data that comes from a 2 seconds wav file. However, when ...
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How to encode into WAV ADPCM?
How to encode WAV PCM into WAV with ADPCM encoding?
I tried FFmpeg. I can see from the old FFmpeg codec list, that it previously supported encoding into adpcm_adx, adpcm_ima_qt, adpcm_ima_wav, ...
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R language issue with mp32wav
A stupid question. I'm trying this bioacoustic example but get troubled when trying to convert the downloaded files from mp3 to wav.
I get the famous "Cannot allocate vector of size..." or R simply ...
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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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Low conversion quality using ffmpeg to merge audio and video
This is what I'm using to merge audio and video in my C# Win From Application and it works fine, but the video bit rate is very low. I'd like to keep the bit rate as it was for the original video, how ...
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How can I break the WAV file into multiple WAV files each containing one word [closed]
I have a WAV file of a human reading simple sentences ("hello world"). How can I break the WAV file into multiple WAV files each containing one word ("hello" and "world") by automatically recognizing ...
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How to convert mp3 to wav without losing metadata?
How can I convert an mp3 file to wav without losing metadata in ffmpeg?
This happens whether I convert from mp3 or if I'm re-encoding a wav file, it doesn't make a difference.
I tried adding -...
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Extracting metadata from wav files
I was curious if there is a way to extract metadata from wav files. For instance, can you get bpm, key, instrument, etc. from a .wav file on upload?
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Concatenate and loop MP3 files
I want to concatenate and loop 3 MP3 files.
grammaraudio1.mp3 grammaraudio2.mp3 grammarsudio3.mp3
The output file must loop the first MP3 file five times, then the second one 5 times, etc. Can I ...
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FFmpeg - convert WebM/Opus to WAV or FLAC in single step?
I want to create WAV and FLAC audio files from WebM files with Opus audio streams, and I want to do so without further degrading the audio. I am currently using a 2-step process as follows (WAV ...
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What is the loudest sound that can be stored in a .wav file?
Is there a limit on how loud an audio file can be? There probably is a limit to stop people from breaking their ears, but I don't know what it is.
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How to view the periodogram or FFT of a WAV file in Audacity?
I’m trying to visualize the periodogram (or the Fourier transform (FFT)) of a WAV file (not a spectrogram produced by a sliding window). Is it possible to do this using Audacity?
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FFmpeg concat demuxer is changing bitrate
I am using the concat demuxer to concat some wav files.
ffmpeg -safe 0 concat -i files.txt -c copy output.wav
files.txt stores files as:
file 'C:\Users\folderpath\input1.wav'
file 'C:\Users\...
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arecord: Create large (7 days) audio recording
For a scientific experiment, we're trying to create a large (7 day) audio recording using arecord from alsa on a RasPi using a USB microphone. The pipeline for the recording is as follows:
arecord -f ...
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Is it possible to use Audacity as a simple sample editor?
It's a weird question but here's my workflow.
I want to be able to open a WAV file from other DAWs, like Ableton or Reason in Audacity. Apply some effects and maybe do some slicing, then get the ...
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route live audio output to live .wav file
i found this nice visualisation program: https://www.youtube.com/watch?v=VVrf89SXvTM
i really like it, but it can only play *.wav files in the same folder as the program executable is. but i want to ...
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shntool splits .wav files at the wrong split points
I am on Ubuntu 16.04 LTS, and I am using the most recent version of the Oh My ZSH shell.
I am using shntool (specifically shnsplit) from the terminal to split .wav files for albums into separate ...
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How can I delete .wav metadata without changing any of its features?
I have to delete additional info from .wav header so it can be processed by another program. After some search I have tried to use ffmpeg, for example:
ffmpeg -y -i $filename -map_metadata -1 -codec ...
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Lossless conversion from wav 24bits to flac
Is it possible to have a lossless conversion from a wav file
Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 48000 Hz, 1 channels, s32, 1152 kb/s to a wav file ?
I tried using ffmpeg :
ffmpeg -...
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