動画フォーマットの百花繚乱
動画フォーマットの概要を簡単にちゃんと説明している資料を見たことがありません。 これは私が理解していると言う意味ではなくて、何がなんだか解らない状態から、すこしわかるにしたがって、初心者を惑わす情報が多いいことに気づいてきたからです。 そこで、私なりに理解しはじめたメモです。 このメモはわかる都度、書き換えてゆきます。 １．コンテナ，ビデオコーデック，サウンドコーデックを区別して、その関係を理解する 実は、私が最初になにがなんだかわからなかった原因はこれです。この区別ができていない資料が氾濫していて、私の頭はなぜなぜ君状態に陥り、わけがわかならいという状況になり、動画フォーマットなんかどうでもいいやと最初は思いました。 (1). ビデオのコーデック ビデオのアナログデータををデジタルデータに変換（エンコード）して、それをアナログに戻す（デコード）為の規格です。 とんでも無く
Using libavformat and libavcodec
Martin Böhme (boehme@inb.uni-luebeckREMOVETHIS.de) February 18, 2004 Update (July 22 2004): I discovered that the code I originally presented contained a memory leak (av_free_packet() wasn't being called). My apologies - I've updated the demo program and the code in the article to eliminate the leak. Update (July 21 2004): There's a new prerelease of ffmpeg (0.4.9-pre1). I describe the changes to
About BT Group | BT Plc
When people connect, there’s no limit to the good they can do. We’re one of the world’s leading communications services companies. The solutions we sell are integral to modern life. Our purpose is as simple as it is ambitious: we connect for good. There are no limits to what people can do when they connect. And as technology changes our world, connections are becoming even more important to everyd
H.264/MPEG-4 AVC products and implementations - Wikipedia
The following is a list of H.264/MPEG-4 AVC products and implementations. Prominent software implementations[edit] Adobe Systems supports the playback of H.264 in Adobe Flash 9.x. In latest version of Adobe Premiere Elements 7 and Premiere Pro CS4 (both shipped in 2008), both source-video and video-export (to Blu-ray Disc) support H.264. Apple integrated H.264 support into Mac OS X v10.4 "Tiger" a
Advanced Video Coding - Wikipedia
Block diagram of video coding layer of H.264 encoder with perceptual quality score Advanced Video Coding (AVC), also referred to as H.264 or MPEG-4 Part 10, is a video compression standard based on block-oriented, motion-compensated coding.[2] It is by far the most commonly used format for the recording, compression, and distribution of video content, used by 91% of video industry developers as of
Getting the latest x264 - Doom9's Forum
DO NOT USE this thread for discussions about x264. Use the x264 development thread or start a new one. Windows builds: x264 Changelog: See the official online Git changelog for latest information: https://code.videolan.org/videolan/x264/commits/master Changelog by revision can be found here: http://komisar.gin.by/old/2851/x264_changelog.txt _______________________________ AVC2AVI Revision 594 (inc
x264, the best H.264/AVC encoder - VideoLAN
x264 is a free software library and application for encoding video streams into the H.264/MPEG-4 AVC compression format, and is released under the terms of the GNU GPL. Features Overview Provides best-in-class performance, compression, and features. Achieves dramatic performance, encoding 4 or more 1080p streams in realtime on a single consumer-level computer. Gives the best quality, having the mo
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List of codecs - Wikipedia
http://www.vsofts.com/products/pc-software-h264-professional-sdk.html