Wowza nDVR AddOn provides the ability to record a live stream with Wowza Media Server while simultaneously allowing users to play, pause, resume, and rewind the recorded stream. Custom configuration allows you to control the archive strategy and availability of your recorded streams.

Setup for client playback of recorded streams is similar to playback of live streams from Wowza Media Server.

Wowza nDVR supports HTTP playback of recorded streams using the following streaming protocols:

• Adobe® HTTP Dynamic Streaming (Adobe HDS/San Jose)
• Apple® HTTP Live Streaming (Apple HLS/Cupertino)
• Microsoft® Smooth Streaming (Smooth)

Wowza nDVR requires that the audio and video in an incoming stream be aligned. Input streams with short key frame intervals and aligned audio and video work best. Full information about Wowza nDVR can be found in the Wowza nDVR AddOn User's Guide.


Additional Resources

• Tutorial: How to set up and run Wowza nDVR for live streaming

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Wowza Transcoder AddOn provides the ability to ingest a live stream, decode the video and audio, and then re-encode the stream to suit desired playback devices. Wowza Transcoder is a real time video transcoding and transrating solution. It can decode and re-encode audio and video in multiple formats with properly aligned key frames adaptive bitrate delivery.

Common scenarios

Transcode

Ingest a non-H.264 video and non-AAC/MP3 audio formatted media stream and convert it to a properly key-frame-aligned set of adaptive bitrate media streams formatted with H.263 or H.264 video and AAC or MP3 audio.

Transrate

Ingest an H.264 video and AAC/MP3 audio formatted media stream and create a full set of bitrate renditions that are key-frame-aligned to the source stream for adaptive bitrate delivery.

Supported video and audio formats

Video (decoding)

• H.264
• MPEG-2
• MPEG-4 Part 2

Video (encoding)

• H.263v2
• H.264

Audio (decoding)

• AAC
• G.711 (µ-law and A-law)
• MPEG-1 Layer 1/2
• MPEG-3
• Speex

Audio (encoding)

• AAC

Additional resources

• How to set up and run Wowza Transcoder AddOn for live streaming
• Wowza Transcoder User's Guide
• How to get images from Wowza Transcoder with an HTTPProvider