DVD to MP3: Extract Audio from DVD(Digital Versatile Disk) Video to MP3(MPEG Layer-3) with River Past Audio Converter, DVD2MP3 converter, conversion

What is DVD?

DVD (also known as "Digital Versatile Disc" or "Digital Video Disc") is a popular optical disc storage media format. Its main uses are video and data storage. Most DVDs are of the same dimensions as compact discs (CDs) but store more than six times as much data.

DVD-Video discs respectively refer to properly formatted and structured video content. It uses MPEG-2 for video compression, with AC-3, DTS or MPEG audio for multi-channel audio support.

To decode DVD, you will need both GPL MPEG-2 Decoder, and AC-3 Decoder.

What is MP3?

MP3 is a digital audio compression algorithm that acheives a compression factor of about twelve while preserving sound quality. It does this by optimising the compression according to the range of sound that people can actually hear. MP3 is currently (July 1999) the most powerful algorithm in a series of audio encoding standards developed under the sponsorship of the Moving Picture Experts Group (MPEG) and formalised by the International Organization for Standardization (ISO).

MP3 is very different from Layer 2, using an additional MDCT layer to increase frequency resolution. Its scale factor groups are more optimised for the human ear, and it uses nonlinear sample quantisation and Huffman coding. MP3 files (filename extension ".mp3") can be downloaded from many World-Wide Web sites and can be played using software available for most operating systems (also downloadable), e.g. Winamp for PC, MacAmp for Macintosh, and mpeg123 for Unix. MP3 files are usually downloaded completely before playing but streaming MP3 is also possible. A program called a "ripper" can be used to copy a selection from a music CD onto your hard disk and another program called an encoder can convert it to an MP3 file.

Windows ships with limited MP3 encoding support. The output sample rate is limited to 24khz and the bitrate is limited 56kbps. However, many add-on packages from open source community make it possible to encode at higher sample rate and bitrate.

A commonly used open source codec is LAME. LAME comes in different forms, including a ACM (Audio compression manager) codec and a DLL (lame_enc.dll). Caution: LAME ACM does not work well on many computers, regardless which software is loading it. It is best to avoid installing LAME ACM and use lame_enc.dll instead.

MPEG.ORG is an excellent source for additional information on MPEG format and usage.

When you encode MP3 audio, we recommend you to install lame_enc.dll.

Launch River Past Audio Converter

Once River Past Audio Converter is installed properly, launch Audio Converter.

Open DVD

Click on the "Add DVD" button on the tool bar. The standard directory open dialog appears. Select your DVD drive or select the "VIDEO_TS" directory.

Select the drive and click "OK". Video Cleaner will parse the directory and add all the video chapters on the disc.

Handling of encrypted DVD's

Most commercial DVD's are copy protected. Our software cannot convert from encrypted DVD's. You can use a third party software to rip the DVD to hard drive first, then browse to the VIDEO_TS directory in our software.

Difference between "Add DVD" and "Add Files"

Do not use "Add Files" to select the VOB files on the DVD disc. A DVD contains many video clips, which are then divided into cells/chapters. All of the video clips are then streamed together in one big block. The VOB files on the disc is just a way to divide the block into 1GB files to be compatible with older operation systems like Windows 95, who has a file size limit.

Each VOB file on the DVD may contain multiple videos. Each video may span over multiple VOB files. If you use "Add Files", only the first clip in that particular VOB file will be parsed and added.

This picture below makes it easier to understand.

In this example, VTS_01_1.VOB contains a still menu, chapter 2, and then the beginning of chapter 3. VTS_01_2.VOB contains the end of chapter 3, and beginning of chapter 4. VTS_01_3.VOB contains the middle of chapter 4. VTS_01_4.VOB contains the end of chapter 4 and beginning of chapter 5, and VTS_01_5.VOB contains the end of chapter 5.

If you use "Add Files" to add VTS_01_1.VOB, you will only get the still menu. If you use "Add Files" to add VTS_01_2.VOB, you will get the end of chapter 3... This is how file based decoding works.

That's why you should use "Add DVD". We will parse the DVD information and find all the cell breaks. You will get to select which cell to convert, from 2 to 5. Still menus are ignored.

If you encounter an error when adding the DVD, please make sure you have GPL MPEG-2 Decoder filter and AC-3 Decoder filter installed.

River Past Audio Converter

Select output format

Use the setting panel on the bottom of the window to control the output format. Click on the toggle to the left of the "Format" label to expand the panel. Select "MP3 - MPEG Layer-3" as the "Audio Type".

You can change the sample rate, channel (stereo or mono) and bitrate.

Note: The standard MPEG Layer-3 audio compressor is limited to maximum 24khz and 56kbps. Please install Lame_enc.dll for higher sample rate and bitrate.