Container-Based Video Processing
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(A/V Codecs) REDCODE RAW (.R3D) ARRIRAW
What is a Codec? Codec is a portmanteau of either "Compressor-Decompressor" or "Coder-Decoder," which describes a device or program capable of performing transformations on a data stream or signal. Codecs encode a stream or signal for transmission, storage or encryption and decode it for viewing or editing. Codecs are often used in videoconferencing and streaming media solutions. A video codec converts analog video signals from a video camera into digital signals for transmission. It then converts the digital signals back to analog for display. An audio codec converts analog audio signals from a microphone into digital signals for transmission. It then converts the digital signals back to analog for playing. The raw encoded form of audio and video data is often called essence, to distinguish it from the metadata information that together make up the information content of the stream and any "wrapper" data that is then added to aid access to or improve the robustness of the stream. Most codecs are lossy, in order to get a reasonably small file size. There are lossless codecs as well, but for most purposes the almost imperceptible increase in quality is not worth the considerable increase in data size. The main exception is if the data will undergo more processing in the future, in which case the repeated lossy encoding would damage the eventual quality too much. Many multimedia data streams need to contain both audio and video data, and often some form of metadata that permits synchronization of the audio and video. Each of these three streams may be handled by different programs, processes, or hardware; but for the multimedia data stream to be useful in stored or transmitted form, they must be encapsulated together in a container format. -
Ease Your Automation, Improve Your Audio, with Ffmpeg
Ease your automation, improve your audio, with FFmpeg A talk by John Warburton, freelance newscaster for the More Radio network, lecturer in the Department of Music and Media in the University of Surrey, Guildford, England Ease your automation, improve your audio, with FFmpeg A talk by John Warburton, who doesn’t have a camera on this machine. My use of Liquidsoap I used it to develop a highly convenient, automated system suitable for in-store radio, sustaining services without time constraints, and targeted music and news services. It’s separate from my professional newscasting job, except I leave it playing when editing my professional on-air bulletins, to keep across world, UK and USA news, and for calming music. In this way, it’s incredibly useful, professionally, right now! What is FFmpeg? It’s not: • “a command line program” • “a tool for pirating” • “a hacker’s plaything” (that’s what they said about GNU/Linux once!) • “out of date” • “full of patent problems” It asks for: • Some technical knowledge of audio-visual containers and codec • Some understanding of what makes up picture and sound files and multiplexes What is FFmpeg? It is: • a world-leading multimedia manipulation framework • a gateway to codecs, filters, multiplexors, demultiplexors, and measuring tools • exceedingly generous at accepting many flavours of audio-visual input • aims to achieve standards-compliant output, and often succeeds • gives the user both library-accessed and command-line-accessed toolkits • is generally among the fastest of its type • incorporates many industry-leading tools • is programmer-friendly • is cross-platform • is open source, by most measures of the term • is at the heart of many broadcast conversion, and signal manipulation systems • is a viable Internet transmission platform Integration with Liquidsoap? (1.4.3) 1. -
Aula2: Utilizando O Canivete Suíço Mencoder Capacitação 2010
Capacitação realizada através de parceria entre o Núcleo de Tecnologia Educacional Municipal - NTM Núcleo de Tecnologia Educacional Estadual - NTE de Volta Redonda CapacitaçãoCapacitação 20102010 Aula2:Aula2: UtilizandoUtilizando oo CaniveteCanivete SuíçoSuíço MencoderMencoder O MEncoder é uma ferramenta em linha de comando para encodação de vídeos sob a Licença Pública Geral (GPL). O MEncoder é distribuído juntamente com o MPlayer e permite converter todos os formatos de vídeo aceitos pelo MPlayer para um grande número de outros players. Possui diversos filtros de áudio e vídeo para a manipulação dos arquivos. Devido a enorme quantidade de opções, o MEncoder pode parecer pouco amigável no começo, mas ele é uma ferramenta extremamente poderosa para conversão de vídeo. Alguns frontends foram desenvolvidos para torná- lo mais acessível. O Básico Um mal entendido muito comum é o de que o MPlayer, por ser capaz de reproduzir diversos containers e codecs de áudio e vídeo, seria também capaz de codificar arquivos nestes mesmos formatos. A lista de codecs para codificação de mídia é muito longa, mas alguns de código livre não estão inclusos por exemplo: FLAC e Theora. Mas não é algo com o que se preocupar, ainda restam diversas opções, até mesmo se você deseja codificar um arquivo para reprodução em Windows ou Mac. Antes de entrar em detalhes, vamos observar o funcionamento básico num processo de re-codificação de um arquivo em um formato que o MPlayer não pode reproduzir, para o formato MPEG4: mencoder arquivo.flv -o arquivo.avi -ovc lavc -oac pcm Explicando cada opção -arquivo.flv: nome do arquivo de vídeo original que você deseja recodificar. -
Opus, a Free, High-Quality Speech and Audio Codec
Opus, a free, high-quality speech and audio codec Jean-Marc Valin, Koen Vos, Timothy B. Terriberry, Gregory Maxwell 29 January 2014 Xiph.Org & Mozilla What is Opus? ● New highly-flexible speech and audio codec – Works for most audio applications ● Completely free – Royalty-free licensing – Open-source implementation ● IETF RFC 6716 (Sep. 2012) Xiph.Org & Mozilla Why a New Audio Codec? http://xkcd.com/927/ http://imgs.xkcd.com/comics/standards.png Xiph.Org & Mozilla Why Should You Care? ● Best-in-class performance within a wide range of bitrates and applications ● Adaptability to varying network conditions ● Will be deployed as part of WebRTC ● No licensing costs ● No incompatible flavours Xiph.Org & Mozilla History ● Jan. 2007: SILK project started at Skype ● Nov. 2007: CELT project started ● Mar. 2009: Skype asks IETF to create a WG ● Feb. 2010: WG created ● Jul. 2010: First prototype of SILK+CELT codec ● Dec 2011: Opus surpasses Vorbis and AAC ● Sep. 2012: Opus becomes RFC 6716 ● Dec. 2013: Version 1.1 of libopus released Xiph.Org & Mozilla Applications and Standards (2010) Application Codec VoIP with PSTN AMR-NB Wideband VoIP/videoconference AMR-WB High-quality videoconference G.719 Low-bitrate music streaming HE-AAC High-quality music streaming AAC-LC Low-delay broadcast AAC-ELD Network music performance Xiph.Org & Mozilla Applications and Standards (2013) Application Codec VoIP with PSTN Opus Wideband VoIP/videoconference Opus High-quality videoconference Opus Low-bitrate music streaming Opus High-quality music streaming Opus Low-delay -
USB Audio/Video Codec Model 2253 Linux Software Manual
USB Audio/Video Codec Model 2253 Linux Software Manual Ver.1.2.8 | December 2013 Table of Contents OPERATING SYSTEM SUPPORT......................................................................................4 INSTALLATION..............................................................................................................5 BASIC OPERATION........................................................................................................6 Video Capture and Output Driver..............................................................................6 Troubleshooting.........................................................................................................7 Demo Program..........................................................................................................8 Notes on the MP4 format..........................................................................................8 GUI Demo Program...................................................................................................9 Playing Recorded Files.............................................................................................10 Using ALSA for audio capture and playback............................................................11 Using the Video Output Device...............................................................................12 Using Loopback on Video Output Device.................................................................12 Using the Video Overlay..........................................................................................13 -
Codec Is a Portmanteau of Either
What is a Codec? Codec is a portmanteau of either "Compressor-Decompressor" or "Coder-Decoder," which describes a device or program capable of performing transformations on a data stream or signal. Codecs encode a stream or signal for transmission, storage or encryption and decode it for viewing or editing. Codecs are often used in videoconferencing and streaming media solutions. A video codec converts analog video signals from a video camera into digital signals for transmission. It then converts the digital signals back to analog for display. An audio codec converts analog audio signals from a microphone into digital signals for transmission. It then converts the digital signals back to analog for playing. The raw encoded form of audio and video data is often called essence, to distinguish it from the metadata information that together make up the information content of the stream and any "wrapper" data that is then added to aid access to or improve the robustness of the stream. Most codecs are lossy, in order to get a reasonably small file size. There are lossless codecs as well, but for most purposes the almost imperceptible increase in quality is not worth the considerable increase in data size. The main exception is if the data will undergo more processing in the future, in which case the repeated lossy encoding would damage the eventual quality too much. Many multimedia data streams need to contain both audio and video data, and often some form of metadata that permits synchronization of the audio and video. Each of these three streams may be handled by different programs, processes, or hardware; but for the multimedia data stream to be useful in stored or transmitted form, they must be encapsulated together in a container format. -
Shall I Use Heterogeneous Data Centers? – a Case Study on Video on Demand Systems
Shall I Use Heterogeneous Data Centers? – A Case Study on Video on Demand Systems Shi Feng∗, Hong Zhang∗ and Wenguang Cheny ∗ Department of Computer Science and Technology Tsinghua National Laboratory for Information Science and Technology Beijing, 100084, China Email: ffredfsh,[email protected] y Research Institute of Tsinghua University in Shenzhen Shenzhen, 518057, China Email: [email protected] Abstract—Recent research work and industrial experience In this paper we perform a case study on VOD systems. show that heterogeneous data centers can be more cost- Previous work suggests power and cost efficiency of a plat- effective for some applications, especially those with intensive form should be determined by actually running the workload I/O operations. However, for a given application, it remains difficult to decide whether the application should be deployed on the platform [4], [5]. We conduct extensive experiments on homogeneous nodes or heterogeneous nodes. to find the optimized configuration for VOD systems. We use In this paper, we perform a case study on finding opti- Helix Server with Helix Producer in Windows, and choose mized configurations for Video on Demand(VOD) systems. We VLC+FFmpeg in Linux. We measure the power and cost examine two major modules in VOD systems, the streaming of platform combinations over three types of processors module and the transcoding module. In this study, we measure performance and power on different configurations by varying and three kinds of disks. Each VOD system contains two these factors: processor type, disk type, number of disks, modules. We explore the effectiveness of mapping distinct operating systems and module mapping modes. -
Ffmpeg Codecs Documentation Table of Contents
FFmpeg Codecs Documentation Table of Contents 1 Description 2 Codec Options 3 Decoders 4 Video Decoders 4.1 hevc 4.2 rawvideo 4.2.1 Options 5 Audio Decoders 5.1 ac3 5.1.1 AC-3 Decoder Options 5.2 flac 5.2.1 FLAC Decoder options 5.3 ffwavesynth 5.4 libcelt 5.5 libgsm 5.6 libilbc 5.6.1 Options 5.7 libopencore-amrnb 5.8 libopencore-amrwb 5.9 libopus 6 Subtitles Decoders 6.1 dvbsub 6.1.1 Options 6.2 dvdsub 6.2.1 Options 6.3 libzvbi-teletext 6.3.1 Options 7 Encoders 8 Audio Encoders 8.1 aac 8.1.1 Options 8.2 ac3 and ac3_fixed 8.2.1 AC-3 Metadata 8.2.1.1 Metadata Control Options 8.2.1.2 Downmix Levels 8.2.1.3 Audio Production Information 8.2.1.4 Other Metadata Options 8.2.2 Extended Bitstream Information 8.2.2.1 Extended Bitstream Information - Part 1 8.2.2.2 Extended Bitstream Information - Part 2 8.2.3 Other AC-3 Encoding Options 8.2.4 Floating-Point-Only AC-3 Encoding Options 8.3 flac 8.3.1 Options 8.4 opus 8.4.1 Options 8.5 libfdk_aac 8.5.1 Options 8.5.2 Examples 8.6 libmp3lame 8.6.1 Options 8.7 libopencore-amrnb 8.7.1 Options 8.8 libopus 8.8.1 Option Mapping 8.9 libshine 8.9.1 Options 8.10 libtwolame 8.10.1 Options 8.11 libvo-amrwbenc 8.11.1 Options 8.12 libvorbis 8.12.1 Options 8.13 libwavpack 8.13.1 Options 8.14 mjpeg 8.14.1 Options 8.15 wavpack 8.15.1 Options 8.15.1.1 Shared options 8.15.1.2 Private options 9 Video Encoders 9.1 Hap 9.1.1 Options 9.2 jpeg2000 9.2.1 Options 9.3 libkvazaar 9.3.1 Options 9.4 libopenh264 9.4.1 Options 9.5 libtheora 9.5.1 Options 9.5.2 Examples 9.6 libvpx 9.6.1 Options 9.7 libwebp 9.7.1 Pixel Format 9.7.2 Options 9.8 libx264, libx264rgb 9.8.1 Supported Pixel Formats 9.8.2 Options 9.9 libx265 9.9.1 Options 9.10 libxvid 9.10.1 Options 9.11 mpeg2 9.11.1 Options 9.12 png 9.12.1 Private options 9.13 ProRes 9.13.1 Private Options for prores-ks 9.13.2 Speed considerations 9.14 QSV encoders 9.15 snow 9.15.1 Options 9.16 vc2 9.16.1 Options 10 Subtitles Encoders 10.1 dvdsub 10.1.1 Options 11 See Also 12 Authors 1 Description# TOC This document describes the codecs (decoders and encoders) provided by the libavcodec library. -
WSE2008 Presentation Template
2008 MPEG2 to MPEG4 video conversion under OS/2 and eComStation Sjoerd Visser MPEG2 to MPEG4 video conversion under OS/2 and eComStation Sjoerd Visser Subjects The art of illusion: Some notes about digital video, sound and pictures DivX and Vidx Video conversion in practice Using FFMPEG to convert EmperoarTV recordings to avi. Using mencoder to convert a DVD to avi. 2008 Warpstock November 16, 2008 / page 2 Europe MPEG2 to MPEG4 video conversion under OS/2 and eComStation Sjoerd Visser Words per minute Reading, typing and speaking rates can be expressed in words per minute (wpm). Speed User Effect 50 wpm :Very slow speaker Boring 150 wpm :Speaker in audio book Listening comfortable 200 wpm :Compressed speech Does allow for full comprehension 300 wpm :Normal conversation Asks full attention to keep a fraction of it 400 wpm :Political debater Wordflow as weapon, disinformation 100 wpm :Slide presentations Hiding information, let them sleep 300 wpm :Normal reading Giving attention to relations 400 wpm :Fast reading Scanning text for the essentials Source: http://www.answers.com/topic/words-per-minute-1 There is a major difference between scanning words (automated listening when everything goes as expected) and attentive listening: hearing words you do not heard before and comprehend their relations, when the subject catches you. 2008 Warpstock November 16, 2008 / page 3 Europe MPEG2 to MPEG4 video conversion under OS/2 and eComStation Sjoerd Visser The bitrates of the human brain (compared to PC's) The total estimated human sensory input processed by our nervous system , including proprioception (the awareness of bodily movement) and other internal receptors (gut feelings) is about 400 gigabit per second . -
Input Formats & Codecs
Input Formats & Codecs Pivotshare offers upload support to over 99.9% of codecs and container formats. Please note that video container formats are independent codec support. Input Video Container Formats (Independent of codec) 3GP/3GP2 ASF (Windows Media) AVI DNxHD (SMPTE VC-3) DV video Flash Video Matroska MOV (Quicktime) MP4 MPEG-2 TS, MPEG-2 PS, MPEG-1 Ogg PCM VOB (Video Object) WebM Many more... Unsupported Video Codecs Apple Intermediate ProRes 4444 (ProRes 422 Supported) HDV 720p60 Go2Meeting3 (G2M3) Go2Meeting4 (G2M4) ER AAC LD (Error Resiliant, Low-Delay variant of AAC) REDCODE Supported Video Codecs 3ivx 4X Movie Alaris VideoGramPiX Alparysoft lossless codec American Laser Games MM Video AMV Video Apple QuickDraw ASUS V1 ASUS V2 ATI VCR-2 ATI VCR1 Auravision AURA Auravision Aura 2 Autodesk Animator Flic video Autodesk RLE Avid Meridien Uncompressed AVImszh AVIzlib AVS (Audio Video Standard) video Beam Software VB Bethesda VID video Bink video Blackmagic 10-bit Broadway MPEG Capture Codec Brooktree 411 codec Brute Force & Ignorance CamStudio Camtasia Screen Codec Canopus HQ Codec Canopus Lossless Codec CD Graphics video Chinese AVS video (AVS1-P2, JiZhun profile) Cinepak Cirrus Logic AccuPak Creative Labs Video Blaster Webcam Creative YUV (CYUV) Delphine Software International CIN video Deluxe Paint Animation DivX ;-) (MPEG-4) DNxHD (VC3) DV (Digital Video) Feeble Files/ScummVM DXA FFmpeg video codec #1 Flash Screen Video Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Forward Uncompressed Video Codec fox motion video FRAPS: -
Win32codecs Mandriva
Win32codecs mandriva click here to download Hi i am am having trouble playing wmv files through KMPlayer. i downloaded the codec pack from Mplayer site and unpacked it to /usr/lib/win32 why to www.doorway.ru "www.doorway.ru" file in every new. Win32 codec binaries /mirror/www.doorway.ru Mandriva , www.doorway.ru Mandriva When I installed Mandriva free the install CD's referred to something calle Among other things I need to install win32codecs, libdvdcss, and. (I am using Mandriva Linux ) Moved to Mandriva section. If you want to learn I installed VLC, wincodecs, libdvdcss sucessfully. Now Mandriva Free Linux, though is extremely user friendly it wincodecs package containes a number of diffeent dll files which. Posts about mandriva sources written by tanclo. faad2 libfaad2_2 xine-faad libquicktime-faad mencoder ffmpeg helixplayer k9copy ogmrip wincodecs. For instance, typing wincodecs (which contains most codecs) will turn out no results within Mandriva's Software Management. Some packages like the Win32 codecs are not available in the standard Mandriva repositories. The easiest way to make such packages available to your system. Problem installing mplayer codecs Mandriva Linux. preplf, wincodecsplf. In Mandriva , it only includes , and I would like to upgrade to . Use MCC to install the mplayer, win32 codecs and mplayer plugins for mozilla. KMPlayer Sound and Video Problems Mandriva Linux. Did you install all the wincodecs from plf? Yes. I just did and that fixed the WMV. In reply to: Another round of changes at Mandriva by danielpf there are plf sites from where you can easily download the win32 codecs, etc. -
Ffmpeg - the Universal Multimedia Toolkit
Introduction Resume Resources FFmpeg - the universal multimedia toolkit Appendix Stefano Sabatini mailto:[email protected] Video Vortex #9 Video Vortex #9 - 1 March, 2013 1 / 13 Description Introduction Resume Resources multiplatform software project (Linux, Mac, Windows, Appendix Android, etc...) Comprises several command line tools: ffmpeg, ffplay, ffprobe, ffserver Comprises C libraries to handle multimedia at several levels Free Software / FLOSS: LGPL/GPL 2 / 13 Objective Introduction Resume Provide universal and complete support to multimedia Resources content access and processing. Appendix decoding/encoding muxing/demuxing streaming filtering metadata handling 3 / 13 History Introduction 2000: Fabrice Bellard starts the project with the initial Resume aim to implement an MPEG encoding/decoding library. Resources The resulting project is integrated as multimedia engine Appendix in MPlayer, which also hosts the project. 2003: Fabrice Bellard leaves the project, Michael Niedermayer acts as project maintainer since then. March 2009: release version 0.5, first official release January 2011: a group of discontented developers takes control over the FFmpeg web server and creates an alternative Git repo, a few months later a proper fork is created (Libav). 4 / 13 Development model Source code is handled through Git, tickets (feature requests, bugs) handled by Trac Introduction Resume Patches are discussed and approved on mailing-list, Resources and directly pushed or merged from external repos, Appendix trivial patches or hot fixes can be pushed directly with no review. Every contributor/maintainer reviews patches in his/her own area of expertise/interest, review is done on a best effort basis by a (hopefully) competent developer. Formal releases are delivered every 6 months or so.