This tutorial is about transcoding video fom one codec into another using
[url=http://ffmpeg.org/]FFMPEG[/url]
. I got deeper into FFMPEG when I wanted to transcode into FLV (Flash Video) and it works very well. I developed the
[url=http://rivavx.de/?encoder]Riva FLV Encoder[/url]
, a GUI for FFMPEG.

We install the Minimalist GNU for Windows MinGW (Compiler) and MSYS (Minimal SYStem) which is a kind of unix-shell to access the MinGW-commands. Next we download, compile and install Lame, an open-source mp3-codec, with MSYS. Next we install WinCVS and checkout the latest cvs-release of FFMPEG. Finally we compile ffmpeg and I will show a few examples how to work with Flash Video (FLV).

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Flash has always been developed and used for multimedia purposes, but until version 6 the possibilities for audio streaming were limited and also there was no video support. With Version 6 and 7 Macromedia introduced video support and a new file format to support various ways of streaming. This article covers only a streaming variant called “progressive download” which does not need server support. True streaming support is available with Macromedia’s non-free Flash Communication Server (FCS).
FLV Streams
Streaming is build upon a new file format called FLV, which separates the streamable content and the flash movie. The result is a very compact flash movie acting as a multimedia player and a storage for streamable content from which the flash movie loads a stream on demand. Read the rest of this entry »

FFmpeg
FFmpeg is an audio/video conversion tool. It includes libavcodec, the leading open source codec library. An experimental streaming server for live broadcasts is also included.
http://sourceforge.net/projects/ffmpeg/
http://ffmpeg.sourceforge.net/index.php

中华视频网
http://bbs.chinavideo.org/
FFmpeg讨论 http://bbs.chinavideo.org/forumdisplay.php?fid=10
FFmpeg下载 http://www.chinavideo.org/index.php?option=com_remository&func=fileinfo&id=61
FFMPEG功能 http://bbs.chinavideo.org/viewthread.php?tid=98&extra=page%3D5

KLStudio BLOG
FLASH视屏开发者的BLOG
http://www.klstudio.com/
程序出售，Q 89747714 Read the rest of this entry »

FFMPEG-PHP

FFMPEG 和 FFMPEG-PHP 的安装

软件：

FFmpeg 官方主页： [url]http://ffmpeg.sourceforge.net[/url]
cvs -z9 -d:pserver:anonymous@mplayerhq.hu:/cvsroot/ffmpeg co ffmpeg

FFmpeg-php 官方主页 [url]http://ffmpeg-php.sourceforge.net[/url]
cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/ffmpeg-php login
cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/ffmpeg-php co ffmpeg-php

Lame 下载地址
[url]http://www.linuxpackages.net/search_view.php?by=name&name=lame&ver=[/url]
Read the rest of this entry »

sysctl.conf
[code]net.inet.tcp.sendspace=65536
net.inet.tcp.recvspace=65536
kern.ipc.somaxconn=4096
kern.ipc.maxsockbuf=2097152
net.inet.icmp.drop_redirect=1
net.inet.icmp.log_redirect=1
net.inet.ip.redirect=0
net.inet6.ip6.redirect=0
net.inet.icmp.icmplim=100
net.inet.tcp.always_keepalive=1
net.inet.tcp.delayed_ack=1
net.inet.udp.sendspace=65535
net.inet.udp.maxdgram=65535
net.local.stream.sendspace=65535
kern.maxfiles=65536
kern.securelevel=0
net.inet.tcp.log_in_vain=1
net.inet.udp.log_in_vain=1
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.udp.checksum=1
net.inet.icmp.bmcastecho=0
######this new add 20041021###########
net.inet.tcp.recvspace=65535
net.inet.tcp.sendspace=65535
net.inet.ip.forwarding=1
net.inet.tcp.strict_rfc1948=1
########for sys flood attack######
net.inet.tcp.msl=7500
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.icmp.icmplim=50
kern.ipc.somaxconn=32768
net.inet.tcp.syncookies=1[/code]

Warning: Unknown: Your script possibly relies on a session side-effect which existed until PHP 4.2.3. Please be advised that the session extension does not consider global variables as a source of data, unless register_globals is enabled. You can disable this functionality and this warning by setting session.bug_compat_42 or session.bug_compat_warn to off, respectively. in Unknown on line 0

解决方法 Kim 表老问了 我写到这里自己忘了来看

在首行加上
ini_set(“session.bug_compat_42″,”Off”);
ini_set(“session.bug_compat_warn”,”Off”);

touch /var/log/serweb
chown www /var/log/serweb #  改变改目录为所定用户