Free dvd to mpeg 4 software for linux

Audio::MPEG is a Perl module for encoding and decoding of MPEG Audio (MP3).

SYNOPSIS

use Audio::MPEG;

Audio::MPEG is a Perl interface to the LAME and MAD MPEG audio Layers I, II, and III encoding and decoding libraries.

Rationale

I have been building a fairly extensive MP3 library, and decided to write some software to help manage the collection. Its turned out to be a rather cool piece of software (incidentally, I will be releasing it under the GPL shortly), with both a web and command line interface, good searching, integrated ripping, archive statistics, etc.

However, I also wanted to be able to stream audio, and verify the integrity of files in the archive. It is certainly possible to stream audio (even with re-encoding at a different bitrate) without resorting to writing interface glue like this module, but verification of the files was clumsy at best (e.g. scanning stdout/err for strings), and useless at worst.
Thus, Audio::MPEG was born.

LAME

This is arguably the best quality MPEG encoder available (certainly the best GPL encoder). Portions of the code have been optimized to take advantage of some of the advanced features for Intel/AMD processors, but even on non-optimized machines, such as the PowerPC, it performs quite well (faster than real-time on late 90s (and later) machines).

MAD

This is a relatively new MPEG decoding library. I chose it after struggling to clean up the MPEG decoding library included with LAME (which is based on Michael Hipps mpg123(1) implementation). In the end, I was very pleased with the results. MAD performs its decoding with an internal precision of 24 bits (pro-level quality) with fixed-point arithmetic. The code is very clean, and seems rock-solid. Although it may seem that it should be faster than the mpg123(1) library due to the use of fixed-point arithmetic, it is in fact about 60% or so of the speed (due to the higher resolution audio). However, the ease of coding against MAD, and the higher precision of the output more than makes up for the slower decoding.

Audio::MPEG can export the data at its highest precision for programs that wish to manipulate the data at the higher resolution.

Operating System Environment

I have only tested this on a Linux 2.4.x system so far, but I see no reason why it should not work on any Un*x variant. In fact, it may actually even work on a Windoze box (the underlying LAME and MAD libraries apparently compile somehow on them). I am doing no special magic with the interface, so presumably it will work under Windows. As you can probably tell, I dont really care if it does (Ill may start caring if M$ releases the source code to Windows under GPL, BSD, or Artistic licenses...). But, for you poor, misguided souls that insist upon running Windows, I expect that there should be little problem getting it to work.

Performance

You would think that with encoding/decoding audio, which is quite a compute-intensive task, Perl would be much slower than the equivalent pure C programs. Surprise... it is only about 3% slower (!) Even with the mechanism I use here (Perl->C->Perl for every frame, Perl 5.6.1 and Linux 2.4.4 (PowerPC 7500) performs just fantastic. So, the moral of this paragraph is to run your own performance tests, but theres no need to think of your own Perl encoder/decoder will be inferior to a pure C/C++ implementation. The only drawback is that, depending upon how much buffer space you use for reading, memory usage will be at least 3 times as much (eh... RAM is cheap...)

DVD Backup is an unix shell script providing functionality for backuping files and databases (PostgreSQL, MySQL) on DVD discs.
DVD Backup supports multisession and incremental backups. Mail notification is also supported.
Enhancements:
- This release sends email notifications using netcat instead of telnet.
- There are more details about communication with the SMTP server, and configurable excluded files patterns.

mpeglib is a mp3 and mpeg I video/audio library for linux.
The library includeds three command line players, for mp3,wav,mpeg video.
Main features:
MPEG I library.
This library contains:
- mpeg I audio player (layer I,II,III (mp3))
- mpeg I video player
- mpeg I system layer player
- wav player
Supported features:
- direct/fast seek in all players
- length detection
- video synchronisation, based on timestamps
- mmx Support where necessary
- VBR/ID3 support for mp3
- shoutcast/icecast support
- CDI/Video CD support
- plugin architecture for input,decoder,output
Supported Outputs:
Audio
- Support for OSS/Linux, Sun
Video
- X11 standard calls (fallback)
- X11 Shared mem
- X11 XFree86 4.0 DGA 2.0 (needs root)
- X11 XFree86 4.0 XVideo Extension (hardware yuv->rgb renderer)
Supported Inputs
- file,http.
- Supports on Linux Video CDs (vcd,cdi)

All I wanted is a simple way to format DVD-RAM, create UDF filesystems, set or remove the write protection and informations about the DVD-RAM.

KDVD-RAM Tools are a combination with service menu, shell script and kdialog.

libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. libmpeg2 is released under the terms of the GPL license.
mpeg2dec
mpeg2dec is a test program for libmpeg2. It decodes mpeg-1 and mpeg-2 video streams, and also includes a demultiplexer for mpeg-1 and mpeg-2 program streams.
It is purposely kept simple : it does not include features like reading files from a DVD, CSS, fullscreen output, navigation, etc... The main purpose of mpeg2dec is to have a simple test bed for libmpeg2.
The libmpeg2 source code is always distributed in the mpeg2dec package, to make it easier for people to test it.
Main features:
- Conformance - libmpeg2 is able to decode all mpeg streams that conform to certain restrictions: "constrained parameters" for mpeg-1, and "main profile" for mpeg-2. In practice, this is what most people are using. For streams that follow these restrictions, we believe libmpeg2 is 100% conformant to the mpeg standards - and we have a pretty extensive test suite to check this.
- Speed - there has been huge efforts there, and we believe libmpeg2 is the fastest library around for what it does. Please tell us if you find a faster one ! With typical video streams as found on DVDs, and doing only decoding with no display, you should be able to get about 110 fps on a PIII/666, or 150 fps on an Athlon/950. This is less than 20 cycles per output pixel. In a real player program, the display routines will probably take as much time as the actual decoding !
- Portability - most of the code is written in C, and when we use platform-specific optimizations (typically assembly routines, currently used for the motion compensation and the inverse cosine transform stages) we always have a generic C routine to fall back on. This should be portable to all architectures - at least we have heard reports from people running this code on x86, ppc, sparc, arm and sh4. Assembly-optimized implementations are available on x86 (MMX) and ppc (altivec) architectures. Ultrasparc (VIS) is probably the next on the list - well see.
- Reuseability - we do not want libmpeg2 to include any project-specific code, but it should still include enough features to be used by very diverse projects. We are only starting to get there - the best way to help here is to give us some feedback !
Enhancements:
- Newer versions of the autotools and FreeBSD and OS X systems are better handled.
- x86 accelerations are now supported on the AMD-64 CPU, including on FreeBSD.
- The AltiVec features are also better detected.
- The 4:4:4 chroma handling, a memory leak in the Xshm code on remote displays, and alignment issues in the sample programs were fixed.
- The parser is more tolerant with invalid sequence display extension.

SDL::MPEG is a SDL perl extension.

SYNOPSIS

$info = new SDL::MPEG -from => $mpeg;

SDL::MPEG provides an interface to quering the status of a SMPEG stream.

METHODS

SDL::MPEG::has_audio returns true if it has audio track
SDL::MPEG::has_video returns true if it has a video track
SDL::MPEG::width returns the width of the video in pixels
SDL::MPEG::height returns the height of the video in pixels
SDL::MPEG::size returns the total size of the clip in bytes
SDL::MPEG::offset returns the offset into the clip in bytes
SDL::MPEG::frame returns the offset into the clip in fames
SDL::MPEG::fps returns the play rate in frames per second
SDL::MPEG::time returns the current play time in seconds
SDL::MPEG::length returns the total play time in seconds

KDE DVD Authoring Wizard will allow you to create a DVD from one or more DVD compatible MPEG-2 files. All you need to do is add one or multiple files to the playlist and answer the questions that follow.
You can add a menu that will contain animated thumbnails of the files in the playlist. Creating a menu is optional.
Main features:
- Playlist editor
- DVD menu with multiple pages
- Animated thumbnails in the menu
- Customizable menu graphics
- Add soundtrack from OGG or MP3
- Antialiased graphics prevent flickering on TV
- Both Widescreen and standard 4:3 support
- ISO DVD Image creation