O plikach MP3

MP3 (MP3 Audio · Format audio)

Rok wydania 1993 Twórca: Fraunhofer IIS

MP3 Audio (.mp3) to standardowy format plików obsługiwany przez KaijuConverter do wymiany danych, archiwizacji i szybkiej konwersji wieloplatformowej.

Kategoria

Audio Files

Rozszerzenie

.mp3

Typ MIME

audio/mpeg

Dostępny jako

Wejście Wyjście

Historia powstania

JAK FORMAT MP3
POWSTAŁ.

1993

1997

1999

2001

2017

MP3 — MPEG-1 Audio Layer III — was developed through the 1980s at the Fraunhofer Institute in Germany, led by engineer Karlheinz Brandenburg. The team spent years optimizing a psychoacoustic model of what the human ear can't distinguish, then threw it all away and kept only the essential parts. The first MP3 decoder shipped in 1993, but the format's cultural explosion came with Winamp in 1997, Napster in 1999, and the iPod in 2001.

MP3 didn't invent audio compression but it perfected the trade-off: high enough quality to be indistinguishable from CD at casual listening, small enough to fit hundreds of songs on a 32 MB flash-memory player. The last patents on MP3 expired in 2017 — it is now a fully open format.

CIEKAWOSTKI I
FAKTY.

Brandenburg famously tuned MP3 by comparing Suzanne Vega's "Tom's Diner" through his compressor — the song became the format's unofficial reference track.

A CD holds about 74 minutes of uncompressed audio (650 MB). At 128 kbps MP3, that fits in 65 MB — a 10× reduction.

The last MP3 patents expired on April 23, 2017. Fraunhofer celebrated by retiring all licensing.

The "MP3" extension comes from MPEG-1 Layer 3; Layers 1 and 2 existed but were never popular.

MP3 bitrate is not constant — variable bitrate (VBR) files often sound better than equivalent constant bitrate.

ZALETY I
OGRANICZENIA.

Zalety

Universal support — every device, every player, every car stereo.
Small file sizes with acceptable quality at 128–320 kbps.
Completely royalty-free since April 2017.
ID3 metadata tags support artist, album, cover art, lyrics, and more.
Efficient decoding — runs on the most basic hardware.

Ograniczenia

Lossy — re-encoding compounds quality loss.
Outperformed by AAC, Opus, and OGG at equivalent bitrates.
Pre-echo artifacts on sharp percussive sounds.
No native support for multichannel audio (only stereo).
Bitrate capped at 320 kbps.

Typowe rozmiary i waga plików

Song at 128 kbps (4 min)

3.8 MB

Song at 320 kbps (4 min)

9.5 MB

Podcast (1 hour, 96 kbps)

42 MB

Audiobook (8 hours, 64 kbps)

220 MB

Specyfikacja techniczna

MIME type: audio/mpeg
Compression: Lossy — perceptual coding based on psychoacoustic model
Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz
Bitrates: 32–320 kbps (CBR) or VBR
Channels: Mono or stereo only
Metadata: ID3v1, ID3v2

KONWERTUJ Z
MP3

mp3 wav mp3 flac mp3 aac mp3 m4a mp3 ogg mp3 opus mp3 wma mp3 aiff mp3 ac3 mp3 au mp3 amr mp3 aif mp3 gsm mp3 voc mp3 w64 mp3 sox mp3 snd mp3 wv mp3 spx mp3 mp2

KONWERTUJ NA
MP3

wav mp3 flac mp3 aac mp3 m4a mp3 ogg mp3 opus mp3 wma mp3 mp4 mp3 mov mp3 mkv mp3 avi mp3 webm mp3 flv mp3 aiff mp3 vob mp3 m4v mp3 ts mp3 ogv mp3 ac3 mp3 amr mp3 au mp3 ape mp3 dts mp3 mka mp3 caf mp3 ra mp3 alac mp3 mpg mp3 wmv mp3 mpeg mp3 3gp mp3 m2ts mp3 mts mp3 asf mp3 dv mp3 f4v mp3 h264 mp3 h265 mp3 m2v mp3 mjpeg mp3 mxf mp3 rm mp3 rmvb mp3 divx mp3 nut mp3 y4m mp3 aif mp3 gsm mp3 voc mp3 w64 mp3 shn mp3 sox mp3 snd mp3 8svx mp3 tta mp3 wv mp3 spx mp3 mp2 mp3 dsf mp3 dff mp3 swf mp3 mid mp3 tak mp3

Typowe zastosowania

Music distribution, podcasts, audio books, ringtones.