• Wowza Transcoder

    Published on 03-23-2015 01:30 PM     Number of Views: 3696 
    1. Categories:
    2. Wowza Transcoder

    When using NVIDIA NVENC hardware with older graphics drivers in your transcoding setup, you may notice that visual artifacts or reduced quality may appear every few seconds in the transcoded stream frames. This may be more noticeable on lower bitrate output renditions. This occurs because the default settings for the NVENC encoder constrain the keyframe bitrate so that the keyframe quality is reduced.

    Updating the graphics driver for your NVIDIA hardware to the latest version or raising the bitrate settings of the video encoding presets in your transcoder template often resolves the problem. If that doesn't work, you can use the following workaround to reduce the effect and improve the stream quality. ...
    Published on 03-02-2015 03:00 PM     Number of Views: 15560 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder supports Intel Quick Sync and NVIDIA NVENC accelerated encoding on Windows and Linux operating systems and NVIDIA CUDA accelerated encoding on Windows. When Wowza Transcoder is invoked for the first time, it checks to see if any hardware acceleration resources are available and logs this information in the Wowza media server access log files ([install-dir]/logs/wowzastreamingengine_access.log or [install-dir]/logs/wowzamediaserver_access.log). This article describes what to look for in the logs to determine if hardware acceleration is available and if it's being used. ...
    Published on 03-02-2015 03:00 PM     Number of Views: 18424 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    This article describes a Windows service workaround to enable Wowza Transcoder Intel Quick Sync and NVIDIA CUDA hardware acceleration. ...
    Published on 08-25-2014 05:14 AM     Number of Views: 29 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    Double-rate deinterlacing uses the individual interlaced fields to create frames at twice the original frame rate of the video. The advantage is that for high motion video, such as sports, motion is more fluid. The disadvantage is that the quality of each frame can be a bit lower. ...
    Published on 07-02-2014 11:00 AM     Number of Views: 26396 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder supports Intel Quick Sync accelerated video decoding and encoding. This article describes the basic specifications for workstation and server-level computers that support Intel Quick Sync Video. ...
    Published on 03-19-2014 05:45 PM     Number of Views: 6275 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    This article describes how to configure Wowza Transcoder to encode audio by using HE-AAC (high efficiency AAC). ...
    Published on 03-07-2014 09:00 AM     Number of Views: 588 
    1. Categories:
    2. Wowza Transcoder

    This article describes how to adjust the audio in the transcoded output from Wowza Transcoder through the use of audio encoding parameters. Users with advanced encoding knowledge can log all of the audio encoding parameters that are available, and their current values, and use this information to adjust the transcoding parameters for transcoded output renditions. ...
    Published on 02-11-2014 05:00 PM     Number of Views: 6098 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder in Wowza media server software supports NVIDIA's NVENC accelerated H.264 encoding technology, which is available with the Kepler line of NVIDIA graphics cards. This technology is supported on Windows and Linux operating systems.

    This article describes how to set up the NVIDIA driver and Wowza media server software on Debian to leverage this technology. ...
    Published on 02-11-2014 05:00 PM     Number of Views: 6679 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder in Wowza media server software supports NVIDIA's NVENC accelerated H.264 encoding technology, which is available with the Kepler line of NVIDIA graphics cards. This technology is supported on Windows and Linux operating systems.

    This article describes how to set up the NVIDIA driver and Wowza media server software on CentOS to leverage this technology. ...
    Published on 02-11-2014 05:00 PM     Number of Views: 4278 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder in Wowza media server software supports NVIDIA's NVENC accelerated H.264 encoding technology, which is available with the Kepler line of NVIDIA graphics cards. This technology is supported on Windows and Linux operating systems.

    This article describes how to set up the NVIDIA driver and Wowza media server software on Fedora to leverage this technology. ...
    Published on 02-11-2014 05:00 PM     Number of Views: 8127 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder in Wowza media server software supports NVIDIA's NVENC accelerated H.264 encoding technology, which is available with the Kepler line of NVIDIA graphics cards. This technology is supported on Windows and Linux operating systems.

    This article describes how to set up the NVIDIA driver and Wowza media server software on Ubuntu Server to leverage this technology. ...
    Published on 02-11-2014 05:00 PM     Number of Views: 12057 
    1. Categories:
    2. Wowza Transcoder

    Wowza™ media server software supports NVIDIA graphics cards with the Kepler GPU architecture to enable accelerated transcoding ...
    Published on 10-29-2013 09:10 PM     Number of Views: 6936 
    1. Categories:
    2. Wowza Transcoder

    When using graphic overlay images with Wowza Transcoder, certain requirements must be met so that the overlays are to the highest possible standard. This article outlines these requirements. ...
    Published on 10-03-2013 03:40 AM     Number of Views: 35 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    This article describes how control how Wowza Transcoder deinterlaces incoming video. ...
    Published on 08-19-2013 09:15 AM     Number of Views: 6594 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder always provides transcoded streams that use the same frame rate as the original video source. Some clients may not be able play streams with high frame rates. For example, you have a video source with a high frame rate, say from an HD video source encoded at 60 frames per second (fps) and you want to restream to devices that can't play at more than 30 fps. You must reduce the frame rate of the transcoded output stream(s) to support these devices. ...
    Published on 11-08-2012 04:45 PM     Number of Views: 6449 
    1. Categories:
    2. Wowza Transcoder

    In Wowza Streaming Engine™ software and Wowza Media Server™ software (version 3.5 and and later), Wowza Transcoder supports bi-directional frames (B-frames) when using the default transcoder implementation and the Main or High Profile. ...
    Published on 11-08-2012 01:00 PM     Number of Views: 54695 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    This article provides instructions for developers about how to use Wowza Transcoder to place overlay images onto live broadcast streams. This article describes the steps of creating a custom Transcoder module, adding a static image to the video, adding text to the video, fading the image and text, and animating the image and text. The examples and classes in this article provide a starting point for development. ...
    Published on 10-25-2012 07:45 AM     Number of Views: 6617 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    Some video encoders don't include frame rate information in stream metadata (SPS NAL unit VUI data and SDP data). Transcoder needs proper frame rate information to configure the encoding sessions. When frame rate information isn't available, Transcoder assumes the frame rate is 29.97 frames-per-second. When this happens, you'll see the following log statement: ...
    Published on 03-01-2012 08:00 PM     Number of Views: 7110 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    Wowza Transcoder has a default sort buffer of 750 milliseconds. A buffer is needed in order to have a complete frame for transcoding or transrating a stream. ...
    Published on 12-16-2011 03:46 PM     Number of Views: 15120 
    1. Categories:
    2. Live,
    3. Live Stream Repeater,
    4. Wowza Transcoder

    To transcode using the Wowza Transcoder on a Wowza live stream repeater edge application, use .stream files (or StreamNameAlias ...
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