• Transcode Live Streams

    Published on 02-18-2015 05:30 PM     Number of Views: 27092 

    Wowza Transcoder is a real-time video transcoding and transrating solution in Wowza™ media server software. As a transcoding solution, it can ingest a non-H.264/VP8/VP9 video and non-AAC/MP3/Vorbis/Opus audio source stream and convert it to outbound H.263/H.264/VP8/VP9 video and AAC/MP3/Vorbis/Opus audio. Multiple outbound renditions with aligned keyframes can be created from the single input stream. As a transrating solution, it can ingest an H.264 video and AAC/MP3 audio source stream and create a full set of output renditions that are keyframe-aligned to the original source. The aligned keyframes in the encoded output renditions enable adaptive bitrate delivery from the Wowza media server over Adobe HDS, Apple HLS, Microsoft Smooth Streaming, MPEG-DASH, and RTMP streaming protocols to multiple devices.

    Supported video and audio formats

    Wowza Transcoder can decode and encode the following video and audio codecs:

    Video decoding (source streams)
    Audio decoding (source streams)
    Video encoding (outbound renditions)
    Audio encoding (outbound renditions)
    H.264
    MPEG-2
    MPEG-4 Part 2
    AAC
    G.711 (-law and A-law)
    MPEG-1 Layer 1/2
    MPEG-1 Layer 3 (MP3)
    Speex
    H.264
    H.263v2
    VP8
    VP9
    AAC
    Vorbis
    Opus

    Note: Wowza Streaming Engine™ 4.5.0 or later is required to use the VP8/VP9 video codecs and Vorbis/Opus audio codec encoding.

    Hardware requirements

    Wowza Transcoder is supported on 64-bit versions of the Windows and Linux operating systems (32-bit versions aren't supported). The OS X operating system isn't supported.

    Wowza Transcoder can be configured to take advantage of hardware acceleration, which is recommended but not required. If your configuration doesn't include hardware acceleration, then a built-in software encoder is invoked. For recommended workstation and server-level hardware to support Intel Quick Sync Video, see Server specifications for Intel Quick Sync acceleration with Wowza Transcoder. For a list of supported NVIDIA graphics cards that are compatible with Wowza Transcoder, see Server specifications for NVIDIA NVENC and NVIDIA CUDA acceleration with Wowza Transcoder.

    Licensing Wowza Transcoder

    Perpetual and Subscription licenses for Wowza Streaming Engine software enable unlimited use of the Wowza Transcoder technology that's integrated with each licensed media server instance. The integrated Transcoder can decode an unlimited number of inbound live streams and encode an unlimited number of outbound live renditions (subject to CPU/hardware limitations).

    Note: If you purchased a license for Wowza media server software before January 1, 2015, contact sales@wowza.com to learn more about how to license Wowza Transcoder.

    Additional resources

    For a detailed introduction to Wowza Transcoder, download the Wowza Transcoder User's Guide.

    To get started, see How to set up and run Wowza Transcoder for live streaming.
    Published on 06-30-2016 12:31 PM     Number of Views: 72708 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    Wowza Transcoder in Wowza media server software offers both accelerated and un-accelerated video encoding, depending on your hardware configuration. This article presents the latest performance benchmark numbers captured for software (Default) encoding, Intel Quick Sync ("Haswell / Skylake") accelerated encoding, and NVIDIA NVENC accelerated encoding. These numbers are for guidance only and your results may vary depending on network traffic, source file composition, configuration, overall operating system overhead, and so on. ...
    Published on 10-06-2015 01:00 PM     Number of Views: 7559 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    This article describes how to configure and use Wowza Streaming Engine media server software to capture transcoder performance benchmark numbers for your specific hardware and operating system configuration. Transcoding in Wowza media server software is enabled by Wowza Transcoder. The methods described in this article are similar to those used by Wowza to capture and publish the data as described in Wowza Transcoder performance benchmark. ...
    Published on 05-02-2016 06:46 AM     Number of Views: 369709 
    1. Categories:
    2. Live,
    3. Wowza Transcoder
    Article Preview

    The transcoding feature in Wowza Streaming Engine media server software is designed to make live adaptive bitrate delivery over HTTP easy. The Transcoder can ingest a single high bitrate live stream and create multiple lower-bitrate renditions on the fly, which are keyframe-aligned for adaptive bitrate delivery. Synchronized Multimedia Integration Language (SMIL) files enable you to group the high bitrate stream and the new renditions together in logical groups for live adaptive bitrate delivery.

    This article explains how to use a SMIL file with transcoded or transrated streams created by Wowza Transcoder. ...
    Published on 07-02-2014 11:00 AM     Number of Views: 26417 
    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 11-15-2016 03:30 PM     Number of Views: 47219 
    1. Categories:
    2. Live,
    3. Wowza Transcoder

    The Transcoder feature in Wowza™ media server software supports accelerated video encoding and decoding using NVIDIA graphics cards, enabling transcoding of live streams at greater scale and speed. Wowza Transcoder also supports offloading transcoder video scaling to NVIDIA CUDA-based GPUs. This article describes the requirements for transcoding with supported NVIDIA graphics cards. ...
    Published on 03-02-2015 03:00 PM     Number of Views: 15571 
    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: 18434 
    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 02-02-2016 04:00 PM     Number of Views: 28679 
    1. Categories:
    2. Wowza Transcoder

    Wowza Transcoder contains technology that makes the best use of Intel Core processors on Linux operating system distributions by adding support for Intel Quick Sync Video. Using Intel Quick Sync Video enables faster transcoding by moving video-conversion tasks to dedicated media processing space. This article describes how to set up Quick Sync accelerated encoding for Wowza Streaming Engine™ 4.4.0 (and later) software on CentOS 7.1-1503 (x86_64). ...
    Published on 02-11-2014 05:00 PM     Number of Views: 12074 
    1. Categories:
    2. Wowza Transcoder

    Wowza™ media server software supports NVIDIA graphics cards with the Kepler GPU architecture to enable accelerated transcoding ...

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