Free m4a quicktime software for linux

Quicktime for Linux lets you read and write Quicktime movies using several codecs. There are many Quicktime libraries for Linux; this one emphasizes reliability and accuracy while not stressing economy.
Also included are frontends to several of the codecs which dont require Quicktime encapsulation, header dump, chunk extraction, and recovery tools.
Enhancements:
- Selectively caching GOP frames to speed up reverse playback. Library upgrades for x264 and ffmpeg.

Video::OpenQuicktime is an interface to the OpenQuicktime library.

SYNOPSIS

use Video::OpenQuicktime;

my $qt = Video::OpenQuicktime->new(file=>"sample.mov");
$qt->get_video_height;
$qt->get_audio_compression;
$qt->get_audio_samplerate;

From the OpenQuicktime site, http://www.openquicktime.org:

"OpenQuicktime aims to be a portable library for handling Apples QuickTime(TM) popular media files on Unix-like environments. It is aim is to provide encoding, authoring and editing support as well as video playback."

OpenQuicktime is currently able to decode as well as encode video and audio streams. The Video::OpenQuicktime library currently only supports extracting diagnostic information from Quicktime files, such as video dimensions, codecs used, and play length.

I would like to add support for video and audio demux at some point, but dont have the time to develop it right now. Given sufficient user interest or free time, Ill do it. Patches are also welcome in case anyone else wants to help me out, see the contact information below.

Quick and Dirty Transcoder provides a simple shell script that adds transcoding support to Amarok using gstreamer.
The only prerequisites are that you have gstreamer installed and the appropriate plugins.
Quick and Dirty Transcoder works with transcoding when copying files to a media player and also adds a context menu to allow you to transcode files in your collection. When doing the latter, the transcoded file will be written to the same directory as the original file.
You can configure dirtyxcode by creating a file in your home directory ~/.dirtyxcode.sh. The format of the configuration is a shell script that will be sourced by dirtyxcode. You can use this to control how dirtyxcode constructs the gstreamer pipeline. For example, to change the flacencoder element add the following:
flac_enc="myflacencoder myflacencopt=foo"
You can also add options to the existing encoders by setting
< format >_enc_options, for example to change the preset quality
setting for the mp3 encoder (lame), add the following to your
~/.dirtyxcode.sh file.
mp3_enc_options="preset=extreme"
The default gstreamer plugins used by Quick and Dirty Transcoder are:
- wav: wavenc
- mp3: lame
- ogg: vorbisenc
- m4a: faac
- aac: faac
- flac: flacenc

Audio::M4P::Atom is an M4P/MP4/M4A QuickTime audio music format atoms.

M4P is a QuickTime protected audio file format. It is composed of a linear stream of bytes which are segmented into units called atoms.

Some atoms may contain other atoms. This module has methods for handling atoms which are delegated by the QuickTime and other modules in the Audio::M4P hierarchy.

Hachoir metadata can extract metadata from archives (bzip2, gzip, zip, tar), audio (MPEG audio/MP3, WAV, Sun/NeXT audio, Ogg/Vorbis, MIDI, AIFF, AIFC, Real Audio), images (BMP, CUR, EMF, ICO, GIF, JPEG, PCX, PNG, TGA, TIFF, WMF, XCF), and video (ASF/WMV, AVI, Matroska, Quicktime, Ogg/Theora, Real Media).
It supports invalid or truncated files and Unicode text. It can remove duplicate values. Hachoir metadata project can also filter metadata according to priority.
Main features:
- Support invalid / truncated files
- Unicode compliant (charset ISO-8859-XX, UTF-8, UTF-16), convert string to your terminal charset
- Remove duplicate values (and if a string is a substring of another, just keep the longest one)
- Set priority to value, so its possible to filter metadata (option --level)
- Only depends on hachoir-parser (and not on libmatroska, libmpeg2, libvorbis, etc.)
Enhancements:
- This release reads the number of channels, bit rate, and sample rate, and computes the compression rate of Real Audio.
- It reads user comments of JPEG pictures.
- It computes the frame rate of Windows ANI.
- It normalizes language for ID3 and MKV.
- OLE2 and FLV extractors are now fault tolerant.

reacTIVision is an open source, cross-platform computer vision framework for the fast and robust tracking of fiducial markers in a real-time video stream. reacTIVision project was mainly designed for the rapid development of table-based tangible user interfaces.

Its tracking core is using Ross Bencinas fidtrack library which is basically a newer high-performance implementation of Enrico Costanzas original d-touch concept. This framework was developed by Martin Kaltenbrunner et.al. at the Music Technology Group, IUA, UPF in Barcelona, Spain as part of the reacTable* project, a novel electro-acoustic musical instrument with a tangible user interface.

reacTIVision is a standalone application, which sends OpenSound Control messages via a UDP network socket to any connected client application. It implements the TUIO protocol, which was specially designed for transmitting the state of tangible objects on a table surface. This framework includes a set of free example client projects for various programming languages, which serve as a base for the easy development of tangible-user interface applications.

The reacTIVision application compiles and runs under the follwing operating systems: Win32, MacOS X and Linux. Under Win32 it suports any camera with a proper WDM driver, such as USB, USB2, FireWire and DV cameras. Equally under MacOS X any such camera supported by QuickTime will work in reacTIVision. Under Linux, FireWire cameras are best supported, as well as a few Video4Linux USB cameras.

NEW: Support the reacTIVision project and buy T-Shirts, posters and other merchandise featuring the reacTIVision fiducial symbols in our web-shop! All designs on these products can be recognized and tracked by the actual reacTIVision software.

Application Handling

Before starting the reacTIVision application make sure you have a supported camera connected to your system. The application can and will not work at all without a camera. Under Win32 and MacOS X the application will ask to select and configure the camera upon startup. Under Linux the camera will be selected automatically. Once configured the application will show a video window with the current camera image in black&white.

Pressing T will show the binary tresholded image, pressing the N key will turn the display off, which reduces its CPU usage significantly!

Pressing the S key will return to the original source image. For convenience and debugging porposes hitting the R key saves a raw image frame, while hitting the B key will save an image in the BMP format.

The P pauses the image analysis completely, hitting ESC will quit the application. The F key toggles the diplay of FPS info in the titlebar. In order to produce some more verbose debugging output, hitting the V key will print the currently recognized symbols to the console.

Command Line Options

The reacTIVision application per default sends the TUIO messages to port 3333 on localhost (127.0.0.1)

In order to change these parameters you can invoke the application with the -h [ip-address] and -p [port-no] options.

reacTIVision needs a so called "tree file" in order to function properly. The default "all.trees" is included and loaded automatically. If you want to use you own tree file you can invoke the application with the -t [tree-file] option.

Optionally if you dont want to analyze the complete image - for example in a square or round table setup - the application can mask a part of the video image with a black region, which speeds up the segmentation algorithm. In order to apply this mask You can invoke the application with the -m [square,circle] option.

Applying the -h or -help option will print a usage message to the console.

Calibration and Distortion

Some tables, such as the reacTable are using a convex mirror in order to increase the area visible to the camera at a minimal distance. This mirror as well as a fish-eye lens unfortunately distort the image. reactIVision includes a correction algorithm, which corrects this distortion with the help of a so called "grid file". These grid files can be generated during a prior calibration process.

To calibrate reacTIVision invoke the application with the option: reacTIVision -c 9 -g [grid_file]

In order to use the this calibration invoke the application with: reacTIVision -g [grid_file]