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RealEncoder 5.0
Frequently Asked Questions

Encoding Questions

  1. What are the system requirements for using RealEncoder 5.0 ?

    The RealEncoder 5.0 is designed to work on Windows 95 and Windows NT operating systems. The hardware requirements differ depending on whether audio or video is being encoded. The tables below list the minimum system requirements for each type of encoding.

    The stated requirements are minimums and better equipment will provide greater performance. Note that different hardware is required for encoding to a file and encoding for a live broadcast.

    Audio Encoding
    RequirementFile EncodingLive Broadcasting
    CPU486/66 DXPentium/586, 75 MHz
    RAM8 MB8 MB required, 16 MB recommended
    Hard Disk Space (software)1 MB1 MB
    Sound CardDepends on the encoding algorithm chosen. The minimum needed sampling rate is 8000 kHz.

    Video Encoding
    RequirementFile EncodingLive Broadcasting
    CPUPentium 120Mhz (166Mhz recommended)Dual Pentium 200Mhz
    RAM32 MB64 MB
    Hard Disk Space (software)1 MB1 MB
    Hard Disk Space (file)Depends on length of clip and encoding algorithm used. A special A/V Hard Drive with at least 3GB is recommended.
    Video Card256 Color Video Card with Windows driver
    Video Capture CardAny card which supports Video for Windows can be used. To date we have tested the following video cards: SE100 by Creative Labs; Wakeboard Multimedia Pro by Digital Video Arts; DC30 by miro; Bravado 1000 by Truevison For NT: Osprey 100 or Osprey 1000 by Multimedia Access Corporation
    For Windows 95: Smart Video Recorder III by Intel

  2. What file formats does RealEncoder 5.0 accept as input for encoding?

    Input formats vary according to whether audio or video is being encoded. RealAudio content may be created either from previously recorded digital audio files or from an external audio source. RealEncoder 5.0 does not support compressed input files. Use a sound-editing utility to convert unsupported formats to a supported format.

    Audio Encoding

    TypePlatformSample Size
    .wav audioWindows, UNIX8- or 16-bit mono or stereo
    .au audioWindows, UNIX, Macintosh8-bit m or stereo or 16-bit linear mono or stereo
    .pcm audioWindows, UNIX8- or 16-bit mono or stereo
    .snd audioWindows, Macintosh8- or 16-bit mono or stereo
    .sd2 audioMacintosh8- or 16-bit mono or stereo
    .aiff audioMacintosh8- or 16-bit mono or stereo
    Live feedWindows Live, Mac Live, UNIX Live8- or 16-bit mono or stereo

    Note: You can use a stereo input file to produce a mono or a stereo output file. However, you cannot use a mono input file to produce a stereo output file. The valid sampling rates are: 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, and 44.1 kHz.

    Video Encoding

    RealEncoder 5.0 supports uncompressed AVI and QuickTime input files of any image size that is a multiple of sixteen pixels. The most standard size is 176 pixels by 144 pixels. An image size of 160 x 120 is also supported. Input files are also required to be in 24-bit RGB color mode.

    Encoding from a live source is supported with specific video capture cards.

  3. What software should be used to convert files into formats which can be encoded by the RealEncoder 5.0 ?

    RealNetworks does not specifically recommend any one piece of third party software. However, there are several conversion products available which offer compatibility with RealPublisher input formats. There are some shareware products available on the Web and we offer other products from our RealStore site.

  4. What is the difference between live encoding and live broadcasting?

    Live encoding and live broadcasting are two methods used by the RealEncoder to encode from a live source.

    Live encoding occurs when encoding is from a live source to a static file. The inputs into your sound card and video capture device can be a microphone, CD, tape recorder or other media device such as a video camera, DVD or laserdisc.

    Live Broadcasting occurs when encoding is from a live source and the encoded stream is being broadcast over the internet live at the time of encoding. A RealAudio Server or RealServer is required for live broadcasting.

  5. Can the RealEncoder 5.0 encode for live broadcasting?

    The RealEncoder 5.0 can be used for live broadcasting so long as the hardware and drivers on the system support live broadcast encoding. If the system components do not support live broadcast encoding, there may not be an error message, but the live broadcast will not successfully occur.

  6. Why does RealEncoder 5.0 return the message, "Source file contains an unsupported video format"?

    If the RealEncoder 5.0 returns the error message, "Source file contains an unsupported video format," your source file is in an unsupported image size, video format, or it is compressed.

    RealEncoder 5.0 supports uncompressed AVI and QuickTime input files of any image size that is a multiple of sixteen pixels. The most standard size is 176 pixels by 144 pixels, but an image size of 160 x 120 is also supported. Input files are also required to be in 24-bit RGB color mode.

    For more information, please see the RealAudio & RealVideo 5.0 Content Creation Guide located in our Documentation library.