Sobre os arquivos AVI

Vídeo AVI

Lançado em 1992 Por Microsoft

AVI (Audio Video Interleave) foi o contêiner de vídeo dominante para PC nos anos 90 e início dos 2000, criado pela Microsoft em 1992. Em 2026 é considerado legacy: foi superado por MP4 e MKV em compatibilidade, eficiência e features. Os arquivos AVI existentes geralmente vêm de DVDs ripados, conteúdo arquivado ou câmeras antigas. Recomendado converter para MP4 H.264 para futuro-proofing.

Família

Video Files

Extensão

.avi

Tipo MIME

video/x-msvideo

Pode ser usado como

Entrada Saída

A história

COMO NASCEU O
FORMATO AVI.

AVI — Audio Video Interleave — launched with Microsoft’s Video for Windows runtime in November 1992, built on the RIFF container Microsoft had introduced a year earlier for WAV audio. The design trick was right in the name: audio and video chunks are interleaved in the file so a playback engine can read one block of video, one block of audio, one block of video, and stream them to the decoder without seeking.

For a decade AVI was the Windows video format. Every Compaq PC came with Video for Windows preinstalled, every digital camera that recorded video produced AVI, and the entire early fan-sub anime scene and early divx piracy ran on AVI. The format is technically ancient — no proper support for modern subtitles, chapters, metadata, or variable frame rates — but its simplicity means you still encounter .avi files in security-camera exports, vintage game cut-scenes, and old family DV tape captures.

CURIOSIDADES E
FATOS INTERESSANTES.

AVI's hard 2 GB file-size limit (later 4 GB) forced the "split into multiple files" workflow that defined early fan-subbing.

The original 1992 spec had no provision for variable bitrate video — a huge problem when MPEG-4 codecs arrived.

DivX, XviD, and the early 2000s piracy scene normalized AVI + MP3 audio as the default internet video format.

AVI does not support soft subtitles — subtitle tracks have to be burned into the video or shipped as external .srt files.

Modern codecs like H.265 technically work inside AVI but tooling is fragile and nobody does it.

VANTAGENS E
LIMITAÇÕES.

Vantagens

Simple, well-documented format — trivial for any video library to parse.
Universal Windows playback since Video for Windows in 1992.
Low encoding overhead — interleaved structure is fast to write.
Works with any codec technically, including modern ones.

Limitações

Aging container — no native support for chapters, subtitles, or multi-audio selection.
File-size limits (2 GB original, 4 GB with OpenDML) break for HD content.
Variable-framerate video causes sync drift.
Larger than equivalent MP4 or MKV due to container overhead.
Poor support on iOS and Android.

Tamanhos típicos de arquivo

10-min video (XviD / MP3)

100-200 MB

45-min TV episode (DivX)

350-700 MB

2-hour movie (DVD rip)

700 MB - 1.4 GB

Especificações técnicas

MIME type: video/x-msvideo
Extension: .avi
Container: RIFF
Max file size: 2 GB (original); 4 GB (OpenDML extension)
Codec support: Any codec via FourCC identifiers

CONVERTER A PARTIR DE
AVI

avi jpg avi png avi webp avi gif avi bmp avi mp4 avi mov avi mkv avi webm avi flv avi wmv avi 3gp avi mp3 avi wav avi flac avi aac avi m4a avi ogg avi opus avi wma avi ogv avi m4v avi ts avi dv avi m2v avi mjpeg avi nut avi y4m

CONVERTER PARA
AVI

mp4 avi mov avi mkv avi webm avi flv avi wmv avi mpeg avi 3gp avi ogv avi vob avi m4v avi ts avi m2ts avi mts avi mpg avi asf avi dv avi f4v avi h264 avi h265 avi m2v avi mjpeg avi mxf avi rm avi rmvb avi divx avi nut avi y4m avi swf avi

Casos de uso comuns

Legacy video playback, Windows media, screen recordings.