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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
Win Win Linux Linux



Portable version

Version history available

3 votes

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  Latest version:
11.4 (May 31, 2015)

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Download Libav 11.4 (portable)

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Download Libav Linux version

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Supported operating systems:
Windows Linux

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Version history / Release notes / Changelog:
version 11.4:

- h264: Make sure reinit failures mark the context as not initialized (CVE-2015-3417)
- msrle: Use FFABS to determine the frame size in msrle_decode_pal4 (CVE-2015-3395)
- cavs: Remove an unneeded scratch buffer
- configure: Disable i686 for i586 and lower CPUs (debian/783082)
- mjpegenc: Fix JFIF header byte ordering (bug/808)
- nut: Make sure to clean up on read_header failure
- png: Set the color range as full range
- avi: Validate sample_size
- nut: Check chapter creation in decode_info_header
- alac: Reject rice_limit 0 if compression is used
- ape: Support _0000 files with nblock smaller than 64
- mux: Do not leave stale side data pointers in ff_interleave_add_packet()
- avresample: Reallocate the internal buffer to the correct size (bug/825)
- mpegts: Update the PSI/SI table only if the version change
- rtsp: Make sure we don't write too many transport entries into a fixed-size array
- rtpenc_jpeg: Handle case of picture dimensions not dividing by 8
- mov: Fix little endian audio detection
- x86: Put COPY3_IF_LT under HAVE_6REGS (gentoo/541930)
- roqvideoenc: set enc->avctx in roq_encode_init
- mp3: Properly use AVCodecContext API
- libvpx: Fix mixed use of av_malloc() and av_reallocp()
- Revert "lavfi: always check av_expr_parse_and_eval() return value"
- alsdec: only adapt order for positive max_order
- alsdec: check sample pointer range in revert_channel_correlation
- aacpsy: correct calculation of minath in psy_3gpp_init
- alsdec: limit avctx->bits_per_raw_sample to 32
- aasc: return correct buffer size from aasc_decode_frame
- matroskadec: fix crash when parsing invalid mkv
- avconv: do not overwrite the stream codec context for streamcopy
- webp: ensure that each transform is only used once
- h264_ps: properly check cropping parameters against overflow
- hevc: zero the correct variables on invalid crop parameters
- hevc: make the crop sizes unsigned

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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3 comments, Showing 1 to 3 comments

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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