Free pc lossless software for windows

La is a Lossless Audio compression program. That is, in contrast to formats such as mp3, it reduces the size of music without affecting the quality, as the uncompressed signal is exactly identical to the original.
However, the compression ratio is thus far lower than that for .mp3 files - you can expect around 50%, worse for heavier music and better for classical etc
Features:
- Windows frontend (which also supports many other codecs).
- Best compression currently available (see comparison).
- Versions for both Windows and Linux OSes.
- Winamp, foobar2000 and Xmms plugins for playback

Lossless JPEG Rotator 1.01 is a commendable program that is able to rotate pictures.

Digital photos can be made with different shot orientaton. To easily view these photos they will have to be rotated to the correct position. With Lossless JPEG Rotator you can do this easily, without loss in quality and in most cases automatically. Rotated photos keep their original date and time.

Rotation can be initiated from the file or folder's right click menu. Most modern digital cameras come with a gravity sensor. This gives them the ability to know the orientation the camera was in while taking the picture, and save that knowlegde as an indicator in the picture file. Some software applications can read this indicator and display the images the right side up, but others (and your DVD-player) don't do this.
When asked to automatically rotate a digital photo to its correct position, Lossless JPEG Rotator reads the JPEG file, checks to see whether is has an orientation indicator (not all JPEG files have one) and, when the picture was not taken with the camera in its normal position, rotates the image to the correct position. It then changes the orientation indicator so that no software application will ever think about rotating the image again.
Manual rotation: If the JPEG file doesn't have an orientation indicator you can still have Lossless JPEG Rotator to rotate the photo, but you will have to tell it yourself the direction to rotate it to.
Major Features:

1. The rotated JPEG file still contains the EXIF header that contains valuable information about the photo.
2. Rotation is lossless: no details of the picture will get lost in the rotation process.
3. When present, the thumbnail image that is part of the EXIF header, is rotated too.
4. If you prefer you can keep the original file. It will get a .BAK extension.
5. Most digital cameras save the date and time the picture was taken in the header of the picture file. You can instruct Lossless JPEG Rotator to set the timestamp of the modified file to that date and time. In other cases the rotated file just keeps the date and time of the original file.
6. Lossless JPEG Rotator can process one file at the time, but you can also instruct it to process all files in a folder, and even to also process files in subfolders of that folder.
7. You can initiate the rotation from the file or folder's right click menu.
   

Enhancements: Context menu didn't appear on some Vista systems.

Requirements: Windows 95/98/ME/NT/2000/XP/Vista.

Lossless compressor for multichannel 8,16 and 24 bits audio data. TTA Lossless Audio Codec is a free, simple, realtime lossless audio compressor that is also based on adaptive prognostic filters and has compared favorably to a majority of its popular open-source peers.
The codec was built to offer adequate compression levels while maintaining high operation speeds.
The TTA lossless audio codec performs lossless compression on multichannel 8, 16 and 24-bit data of WAV audio files. The term "lossless" refers to the fact that such compression results in literally no data or quality loss; when decompressed, the audio file data are bit-identical to those of their originals.
Compression ratios achieved by the TTA codec vary, depending on music type, but range from 30% - 70% of the original. The TTA lossless compressed audio format supports both ID3v1 and ID3v2 information tags.
The TTA lossless audio codec allows for the storage of up to 20 audio CDs worth of music on a single DVD-R, retaining the original CD quality audio, plus detailed information in the popular ID3 tag format.
Being lossless means that no data/quality is lost in the compression - when uncompressed, the data will be identical to the original.

Onda Lossless Audio Compressor is a Java program that compresses 16-bit and 24-bit WAVE and AIFF audio files using the Onda lossless audio compression (LAC) algorithm.
The Onda Lossless Audio Compressor algorithm doesnt perform as well as some other open-source LAC algorithms in terms of either speed or compression ratio; its virtue, if it can be said to have one, is that it is easy to understand and to implement, involving no mathematics beyond a bit of arithmetic.
The motivation for publishing the Onda Lossless Audio Compressor algorithm is that there may be circumstances in which a mediocre but simple LAC algorithm thats easy to implement is preferable to a good but complex algorithm.
There is a diminishing return on the complexity of LAC algorithms; each extra percentage point of compression becomes increasingly difficult to achieve.
The Onda Lossless Audio Compressor algorithm is content with the easy pickings: it gives up the struggle for extra compression when the going gets tough, with the expectation that its less-than-stellar performance will be sufficient for some purposes.
Main features:
- It can compress 16-bit and 24-bit AIFF and WAVE audio files, and can validate and expand files that it has compressed.
- It can be used as a command-line (console) application or with a graphical user interface (GUI).
- It can operate on single files or on all the files in a directory, with optional recursion. Input files and directories can be specified directly or as a list of pathnames in a text file.
- When it is run as a GUI application, input files and directories can be specified by drag-and-drop on systems that support it.
- It can preserve the ancillary chunks of AIFF and WAVE files (eg, the "bext" chunk used in BWF files), using a filter to specify the chunks that should be included in or excluded from a compressed file.