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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:Linux
Version:12.1
Released:May 14,2017
File size:7.2MB
6.9/10
6 votes

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Libav screenshot
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Latest version

12.1 (May 14, 2017)




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Download Libav 12.1  [7.2MB]  [Linux]  [Portable]




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Download Libav old versions




Supported operating systems

LinuxLinux




License

Free software




Version history / Release notes / Changelog


version 12.1:

- vaapi_h264: fix RefPicList[] field flags.
- libilbc: support for latest git of libilbc
- libopusdec: default to stereo for invalid number of channels
- avpacket: fix leak on realloc in av_packet_add_side_data()
- mpegvideo: Return correct coded frame sizes from parser
- hwcontext_vaapi: Don't abort on failing to allocate from a fixed-size pool
- mov: Update colr values
- avconv: Fix the audio next dts computation
- mss2: only use error correction for matching block counts
- h264_slice: Wait for refs to be available before we use them in error concealment
- hevc: decouple calling get_format() from exporting the SPS parameters
- hevcdec: do not set decoder-global SPS prematurely
- mov: fix a possible invalid read in mov_read_mac_string() (bug/972, bug/1003)
- mpegvideo_parser: avoid signed overflow in bitrate calculation (bug/981)
- mpeg12dec: avoid signed overflow in bitrate calculation (bug/981)
- mpeg12dec: move setting first_field to mpeg_field_start() (bug/999)
- h264dec: make sure to only end a field if it has been started (bug/977, bug/978, bug/992)
- matroskadec: fix SRT subtitle duration
- http: Check for negative chunk sizes
- cmdutils: update copyright year to 2017
- matroskadec: make sure not to leave EbmlBin in an inconsistent state (bug/1001)
- asfdec: Use the ASF stream count when iterating
- aac: Validate the sbr sample rate before using the value (bug/1027)
- mov: Do not try to parse multiple stsd for the same track (bug/1017)
- vf_fade: Make sure to not miss the last lines of a frame
- asfdec: Account for different Format Data sizes (bug/1020)
- asfdec: fix reading files larger than 2GB
- h264dec: fix dropped initial SEI recovery point
- rtmppkt: Check for packet size mismatches
- apetag: fix flag value to signal footer presence
- apetag: account for header size if present when returning the start position
- lavc: make sure not to return EAGAIN from codecs
- h264dec: initialize field_started to 0 on each decode call (bug/1019)
- h2645_parse: use the bytestream2 API for packet splitting (bug/1002)
- h264_cavlc: check the value of run_before (bug/1000)
- nsvdec: don't ignore the return value of av_get_packet() (bug/1039)
- mpeg4videodec: raise an error if sprite_trajectory.table is NULL (bug/1012)
- dca: Validate the channel map (bug/1016)
- avformat: Free the internal codec context at the end
- dca: Account for lfe when checking for the channel count (bug/1037)
- flv: Validate the packet size (bug/1041)
- mjpeg: Report non-3 component rgb lossless as not supported (bug/1043)
- mm: Skip unexpected audio packets (bug/1046)
- vc1dec: raise an error if sprite picture data is missing (bug/1013)
- avplay: Do not try to allocate new frames when the player is closing (bug/1052)
- avprobe: Handle unknown values for the color description (bug/1040)
- aacsbr: Turnoff in the event of over read. (bug/1047)
- h264_refs: validate the SPS pointer in ff_h264_execute_ref_pic_marking() (bug/1036)


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Alternative to Libav


ffmpeg







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Acronyms / Also Known As

Libav, avconv, avplayer, avprobe, avserver



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6 reviews, Showing 1 to 5 reviews

It seems that branch 12 will bot released before I am 6 feet under!
That sucks! LIBAV is not a good choice for developers who wants to be up-to-date!
Your overall better choice is FFMPEG!



Aug 4, 2016 Version: 11,7 OS: Windows 7 64-bit Ease of use: 3/10 Functionality: 10/10 Value for money: 10/10 Overall: 5/10



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



Mar 1, 2016 Version: 12 OS: Windows 7 64-bit Ease of use: 1/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10



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


Feb 29, 2016 Version: Libav OS: Windows 7 Ease of use: 5/10 Functionality: 5/10 Value for money: 5/10 Overall: 5/10



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.



Nov 1, 2015 Version: 12 OS: Windows 7 64-bit Ease of use: 5/10 Functionality: 10/10 Value for money: 10/10 Overall: 5/10



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.






Jun 2, 2015 Version: Libav 11.4 OS: Windows 7 64-bit Ease of use: 10/10 Functionality: 5/10 Value for money: 10/10 Overall: 5/10


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