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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

Version:11.4 History


Portable version

2 votes

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  Latest version:
11.4 (May 31, 2015)

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Download Libav 11.4 (20MB) (Portable)

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Download Libav Linux version

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Supported operating systems:
Windows Linux

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

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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

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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2 comments, Showing 1 to 2 comments

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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