Free video and audio software for linux

This application is particularly useful for owners of digital DV video cameras and other people who use the Sony DV video format for high quality video production.

DV Assembler allows you to append multiple Sony DV files with nice looking transition effects for both audio and video. Multiple transition effects are supported, like cross-fade, zoom, blur and a flash effect.

I created DV Assembler because there are no user friendly video editing applications for Linux. Yes, Kino is promising, but its user interface is still a mess and development is slow.

DV Assembler only touches the head and tail parts of the original video files that are needed to create the transition effects. The rest of the video is left untouched, which means zero quality loss.

DV Assembler can also be used to generate video editing scripts that can be run without KDE and Kommander.

SDL::Video is a SDL perl extension.

SYNOPSIS

$video = new SDL::Video ( -name => pr0n.mpg );

SDL::Video adds support for MPEG video to your SDL Perl application. Videos are objects bound to surfaces, whose playback is controled through the objects interface.

METHODS

SDL::Video::error() returns any error messages associated with playback
SDL::Video::audio(bool) enables or disables audio playback, (on by default)
SDL::Video::video(bool) enables or disable video playback, (on by default)
SDL::Video::loop(bool) enables or disable playback looping (off by default)
SDL::Video::volume(int) set the volume as per the mixer volume
SDL::Video:display(surface) binds the clip to a display surface
SDL::Video::scale([x,y]|[surface]|int) scales the clip by either x,y factors, scales to the image dimensions, or a single scalar.
SDL::Video::play() plays the video clip, call SDL::Video::display() before playing
SDL::Video::pause() pauses video playback
SDL::Video::stop() stops video playback
SDL::Video::rewind() resets the clip to the beginning
SDL::Video::seek(offset) seeks to a particular byte offset
SDL::Video::skip(time) skips to a particular time
SDL::Video::region(rect) takes a SDL::Rect and defines the display area
SDL::Video::frame(int) renders a specific frame to the screen
SDL::Video::info() returns a new SDL::MPEG object reflecting the current status
SDL::Video::status() returns either SMPEG_PLAYING or SMPEG_STOPPED or SMPEG_ERROR

Video::Info::ASF is a Perl module for ASF files for attributes like:

-video codec
-audio codec
-frame height
-frame width
-frame count
and more!

SYNOPSIS

use Video::Info::ASF;

my $video;

$video = Video::Info::ASF->new(-file=>$filename); #like this

$video->vcodec; #video codec
$video->acodec; #audio codec
...

ASF stands for Advanced Systems Format, in case you were wondering. It used to stand for Active Streaming Format, but Microsoft decided to change it. This type of file is primarily used to store audio & video data for local or streaming playback. It can also be embedded with commands (to launch a web browser, for instance), for an "immersive" experience. ASF is similar in structure to RIFF. (See RIFF::Info). The morbidly curious can find out more below in REFERENCES.

Video::Info::MPEG is a basic MPEG bitstream attribute parser.

SYNOPSIS

use strict;
use Video::Info::MPEG;

my $video = Video::Info::MPEG->new( -file => $filename );
$video->probe();

print $file->type; ## MPEG

## Audio information
print $file->acodec; ## MPEG Layer 1/2
print $file->acodecraw; ## 80
print $file->achans; ## 1
print $file->arate; ## 128000 (bits/sec)
print $file->astreams ## 1

## Video information
printf "%0.2f", $file->fps ## 29.97
print $file->height ## 240
print $file->width ## 352
print $file->vstreams ## 1
print $file->vcodec ## MPEG1
print $file->vframes ## 529
print $file->vrate ## 1000000 (bits/sec)

The Moving Picture Experts Group (MPEG) is a working group in charge of the development of standards for coded representation of digital audio and video.
MPEG audio and video clips are ubiquitous but using Perl to programmatically collect information about these bitstreams has to date been a kludge at best.

This module parses the raw bitstreams and extracts information from the packet headers. It supports Audio, Video, and System (multiplexed audio and video) packets so it can be used on nearly every MPEG you encounter.

Video::Frequencies is a Perl module that has many, many frequency constants and lists.

SYNOPSIS

use Video::Frequencies;

while (my($name,$list) = each %CHANLIST) {
print "$namen";
while (my($channel,$freq) = each %$list) {
printf " %-4s %9dn", $channel, $freq;
}
print "n";
}

This module exports (yes, exports!) frequency constants as well as hashes with channel => frequency relations for digital and analog video and audio broadcast. Another, shorter way to put it is "worldwide channel/frequency list". All frequencies are given in kHz.

Its a good idea to use perldoc -m Video::Frequencies to get an idea on how the various constants and lists look like.

Perl Audio Converter (PAC) is a tool for converting multiple audio types from one format to another. It supports MP2, MP3, Ogg Vorbis, FLAC, Shorten, Monkey Audio, FAAC (AAC/M4A/MP4), Musepack (MPC), Wavpack (WV), OptimFrog (OFR/OFS), TTA, LPAC, Kexis (KXS), AIFF, AC3, Lossless Audio (LA), AU, SND, RAW, VOC, SMP, RealAudio (RA/RAM), WAV, and WMA.
It can also convert audio from the following video formats/extensions: RM, RV, ASF, DivX, MPG, MKV, MPEG, AVI, MOV, OGM, QT, VCD, VOB, and WMV. A CD ripping function with CDDB support, batch and playlist conversion, tag preservation for most supported formats, independent tag reading/writing, and extensions for Konqueror and amaroK is also provided.
Enhancements:
- Added: MP4::Info dependency IO::String to pacpl-install
- Updated: License GPLv3
- Bug Fix: Directory conversions. pacpl was claiming the directory was empty and prompting to use the --recursive option...Thanks to John Meyer for the report.

MPEG Audio/Video Player is a simple MPEG and AC3 player for Linux, BSD, and Windows systems.
It plays MPEG transport, program, and elementary stream files. It also has basic DVD support (using libdvdnav on Linux/BSD sytems only).
Main features:
- Runs on Windows, Linux, and BSD systems.
- Plays MPEG Transport Stream, Program Stream, and Elementary Stream files.
- Basic DVD support (with libdvdnav on Linux/BSD systems only).
- Decodes MPEG 1&2 Video, MPEG Layer 2 Audio, and AC3 audio.
- All decoders use only integer operations, for faster performance.
- Flexible, and easy to use decoders, that can decode streams in chunks as small as 1 byte (buffering is not necessary).