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Libav provides cross-platform tools and libraries to convert, manipulate and stream a wide range of multimedia formats and protocols. avconv is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter. AVplay is a very simple and portable media player using the Libav libraries and the SDL library. avprobe gathers information from multimedia streams and prints it in human- and machine-readable fashion. avserver is a streaming server for both audio and video. Command line tools.

Free software
OS:Windows Linux
File size:20MB
Portable version
Version history available

5 votes

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  Latest version:
11.6 (February 29, 2016)

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Download Libav 11.6 (portable)

Download Linux versions:
Download Libav Linux version

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Supported operating systems:
Windows Linux

Libav screenshot
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Version history / Release notes / Changelog:
version 11.6:

- configure: add --enable-rpath
- concat: disable by default

version 11.5:

- aac_parser: add required padding for GetBitContext buffer
- ac3_parser: add required padding for GetBitContext buffer
- imc: add required padding for GetBitContext buffer
- h263: Always check both dimensions
- opusdec: properly handle mismatching configurations in multichannel streams (bug/876)
- configure: Set the initial ldflags to match the cflags
- configure: mips: Support mips r6, r2 and r1
- mips: intreadwrite: Only execute that code for mips r1 or r2
- vc1: Use logical instead of bitwise or for twomv
- configure: address a copy-paste typo
- rtmpcrypt: Do the xtea decryption in little endian mode
- mov: Correctly allocate ctts_data
- mov: Fix two memleaks
- bink: Factorize bink put_pixel
- aac: Wait to know the channels before allocating frame
- configure: Support MSVC 2015 (bug/864)
- rtpdec_asf: Check memory allocation and free memory on error (CID/1257774)
- jack: Check memory allocation (CID/1292520)
- mov: Check memory allocation (CID/1292518)
- audiointerleave: Always initialize new_pkt (CID/609333)
- sctp: Always initialize outmsg struct (CID/1302711)
- mkv: Correctly report the latest packet had been flushed (bug/865)
- h264_weight: Fix SSSE3 biweight code with weights of 128
- lavc: Clarify the behaviour of dimension and format context fields
- h264: make sure the current picture is not made a long ref multiple times
- aic: Fix slice size computation for widths multiples of 32 macroblocks
- mov: Preserve the metadata even when bit-exactness is requested (bug/845)
- webp: Make sure enough bytes are available
- h261: Set 'still image mode off' in picture header (bug/872)
- h261: Signal freeze picture release for intra frames (bug/873)
- avconv: vda: Unlock the pixel buffer once it is accessed
- g726: Do not crash on user mistake
- bytestream2: set the reader to the end when reading more than available
- arm: use a local label instead of the function symbol in ff_prefetch_arm
- af_channelmap: properly set the supported output channel layouts
- rtsp: Only interpret $ as interleaved packet indicator at the start of replies
- rtsp: Allow $ as interleaved packet indicator before a complete response header
- configure: arm: Assume softfp ABI on darwin
- vp7: bound checking in vp7_decode_frame_header
- imgutils: Fix a typo in avcodec_get_pix_fmt_loss
- mux: Make sure that the data is actually written (bug/881)
- file: properly forward errors from file_read() and file_write() (bug/881)
- mmvideo: Make sure the rle does not write over the frame boundaries (bug/887)
- opus: Buffer the samples from the correct offset (bug/909)
- nut: Use the correct codec_tag when multiple are available (bug/883)
- truemotion2: Fix the buffer check (bug/906)
- flashsv: Initialize the block array (bug/908)
- mimic: Always return on failure (bug/905)
- msnwc_tcp: Correctly report failure
- lagarith: Correctly compute hash_shift (bug/907)
- rpza: Check the blocks left before processing one (bug/903)
- dvdsubdec: Validate the RLE offsets
- avi: Validate the stream-id for DV as well (bug/879)
- mov: Use the correct type for size (bug/921)
- mov: Force the full parsing of mp3 (bug/899)
- mkv: Force the full parsing of mp3
- matroska: Always consider S_TEXT/UTF8 as SRT when demuxing

View full changelog

Sections/Browse similar tools:
Linux video tools
Video Encoders / Converters

Alternative to Libav:

Guides and How to's:
No guides/tutorials, submit guides here.

Acronyms / Also Known As:
Libav, avconv, avplayer, avprobe, avserver


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5 comments, Showing 1 to 5 comments

Still no branch 12 to see on the horizon!
That makes me tired...

Posted March 01, 2016 by . Tool version 12 using OS Windows 7 64-bit
Ease of use 1 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 10 of 10

It still does not have proper support for Avisynth 2.6, is a shame.

Posted February 29, 2016 by . Tool version Libav using OS Windows 7
Ease of use 5 of 10 Functionality 5 of 10 Value for money 5 of 10 Overall score 5 of 10

Simply annoying is the long time between major release versions. Version 12 is under development since more than a half year, but we still see no release version announced. I just complain about it because most open source software developer do not use nightly builds so new features not come to life in proper libav based softwsae tools while ffmpeg based tools have it included due to their faster integration to release versions & the shorter release cycles.
I do not say that ffmpeg is more better than libav or the other way around. I just say that great developments does not cone to life without a force to release it soon. Development in libav is great, but please let it out all the good work you did to can use all the good work in great tools such as VLC Player or Handbrake. If these tools would use ffmpeg libraries the missing features & format support would be already a part of it...

My hope for the future is to see libav & ffmpeg teams joined.

Posted November 01, 2015 by . Tool version 12 using OS Windows 7 64-bit
Ease of use 5 of 10 Functionality 10 of 10 Value for money 10 of 10 Overall score 5 of 10

Twelve years ago that Avisynth use, in ffmpeg I have no problems, in mencoder I have no problems, in libav:

"avconv version v12_dev0-1322-g4e17946, Copyright (c) 2000-2015 the Libav developers
built on May 24 2015 18:24:04 with gcc 4.8.3 (Gentoo 4.8.3 p1.1, pie-0.5.9)
C:\Program Files (x86)\LIBAV\usr\bin\LIBRA.avs: Invalid data found when processing input"

Please fix it.
Thank you.

Posted June 02, 2015 by . Tool version Libav 11.4 using OS Windows 7 64-bit
Ease of use 10 of 10 Functionality 5 of 10 Value for money 10 of 10 Overall score 5 of 10

Seems to work as it should. Although, I still don't see the point why I should use this rather than ffmpeg. Developer's page says:

"It originates from the FFmpeg codebase, but goes its own way these days, providing its users with reliable releases and a clear vision how to go forward."

Doesn't say much to me. Is there any remarkable difference?

Posted March 24, 2013 by . Tool version 9.4 using OS Linux
Ease of use 8 of 10 Functionality 9 of 10 Value for money 1 of 10 Overall score 8 of 10

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