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Questions tagged [audio-conversion]

142 questions
145
votes
7 answers

FFmpeg: Convert m4a to mp3 without significant loss

I have a load of audio files (about 1000) which I want to convert from m4a to mp3 so I can use play them on a CD player which has a USB port. I tried doing something simple like: ffmpeg -i FILE.m4a FILE.mp3 but this seems to reduce the bitrate to a…
user3728501
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64
votes
3 answers

Convert mp3 to wav using FFmpeg for VBR

What command should I use to convert a mp3 file to wav whose bitrate is variable. Or better how would I know whether that source audio is fixed bitrate or variable?
Soham Dasgupta
  • 1,684
46
votes
10 answers

How do I split an MP3 file without re-encoding it?

I have a 400 MB MP3 file at 96 kbps, taken from a CD.  I want to split this into many files. Is there any way to do that without affecting the quality of audio, or maybe without re-encoding the file?
user103534
  • 469
34
votes
2 answers

FFmpeg command to convert MP3 to AAC

I can issue this command: ffmpeg -i input.mp3 -acodec alac -ab 128k -ar 48000 -ac 2 -y output.m4a to create a m4a file. But when I issue this command ffmpeg -i input.mp3 -acodec alac -ab 128k -ar 48000 -ac 2 -y output.aac ffmpeg is throwing an…
Soham Dasgupta
  • 1,684
32
votes
1 answer

ffmpeg - How to copy|extract encoding settings from existing media file?

I wished to be able do this multiple times now so I ask. If I have an existing video or audio file, ffmpeg, mplayer and other media players can detect at least some of it's "propreties" like container, codec and bitrate used, probably various…
n611x007
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29
votes
8 answers

Splitting an audio file into chunks of a specified length

I have several long audio files (80 minutes each; m4a) and want them split into 5- or 10-minute pieces. I see many questions for splitting an audio file at extended pauses, tones, etc. but can't seem to find one regarding this simple operation. Does…
Andrew Cheong
  • 1,818
20
votes
2 answers

How do I change the bit depth in FFmpeg?

I need FFmpeg to grab an audio feed and reencode it to 16-Bit FLAC. How do I force a 16-Bit FLAC output? ./ffmpeg -i http://7359.live.streamtheworld.com:80/CONTINENTALAAC_SC -vn -ac 1 -ar 16000 -acodec flac -map 0 -f segment -segment_list…
xulen
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19
votes
5 answers

How to convert MP3 to YouTube-allowed video format?

I have many MP3 files on my website and I have decided to upload them to Youtube, but unfortunately for me, YouTube does not allow me to do that. It requires video format only. How can I convert these MP3s to video and add same set of images (one…
malhobayyeb
  • 543
18
votes
2 answers

ffmpeg stereo channels into two mono channels

I wanted to know if there is a way to split stereo into two mono wav files. My first guess was ffmpeg -threads "16" -i "$2" -map 0:1:1 "$3" because my example video has the following informations: Audio ID :…
sebastian
  • 311
14
votes
6 answers

How can I convert FLAC to other formats in OS X?

I have a few FLAC files that I'd like to play with iTunes. I would like to retain the metadata if possible. How can I convert the files to a format supported by iTunes?
jweede
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13
votes
2 answers

How to compile the best version of FFmpeg for Cygwin/Windows

It's generally accepted that, by default, FFmpeg comes packaged with lower-quality encoders - particularly when it comes to the default AAC encoder and the default resampler. According to these sources, the solution is to compile the program from…
Hashim Aziz
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11
votes
4 answers

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 with FFmpeg defaults fails: libfaac doesn't support…
Camille Goudeseune
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10
votes
3 answers

Convert YouTube DASH audio (youtube-dl) to m4a (AAC DL)

I am unable to listen to m4a DASH audio I download from YouTube via youtube-dl on Winamp. Is there an option in youtube-dl to remove the DASH audio part of m4a file and download/save it as an m4a (AAC LC) without loss of quality? So far, I am using …
Sun
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10
votes
1 answer

Convert m4a to aac without quality loss?

I wanna use a program on an .m4a file, but the program can't handle .m4a. It can handle .aac, however, and the codec of the file is MPEG-4 AAC. Is there a way to convert to .aac (and preferably converting back) without reencoding? (Alternative…
H.v.M.
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9
votes
6 answers

Converting wma to mp3 in bulk without changing directory

I have thousands of music tracks in WMA format from when I used to use Windows Media Player to rip CDs. Now I'm having problems playing them on my Linux desktop at work. Is there a good solution (for Windows or Linux) for converting all the WMAs to…
Eddy
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