kaltura/nginx-vod-module: NGINX-based MP4 Repackager

nginx-vod-module – NGINX-based MP4 Repackager


  • On-the-fly repackaging of MP4 files to DASH, HDS, HLS, MSS
  • Working modes:
    1. Local – serve locally accessible files (local disk/NFS mounted)
    2. Remote – serve files accessible via HTTP using range requests
    3. Mapped – serve files according to a specification encoded in JSON format. The JSON can pulled from a remote server, or read from a local file
  • Adaptive bitrate support
  • Playlist support (playing several different media files one after the other) – mapped mode only
  • Simulated live support (generating a live stream from MP4 files) – mapped mode only
  • Fallback support for file not found in local/mapped modes (useful in multi-datacenter environments)
  • Video codecs: H264, H265 (DASH/HLS)
  • Audio codecs: AAC
  • Audio only/video only files
  • Alternative audio renditions – supporting both:
    1. Generation of manifest with different audio renditions, allowing selection on the client side
    2. Muxing together audio and video streams from separate files / tracks – provides the ability to serve different audio renditions of a single video, without the need for any special support on the client side.
  • Track selection for multi audio/video MP4 files
  • Playback rate change – 0.5x up to 2x (requires libavcodec and libavfilter)
  • Source file clipping (only from I-Frame to P-frame)
  • Support for variable segment lengths – enabling the player to select the optimal bitrate fast, without the overhead of short segments for the whole duration of the video
  • Clipping of MP4 files for progressive download playback
  • Decryption of CENC-encrypted MP4 files (it is possible to create such files with MP4Box)
  • DASH: common encryption (CENC) support
  • MSS: PlayReady encryption support
  • HLS: Generation of I-frames playlist (EXT-X-I-FRAMES-ONLY)
  • HLS: support for AES-128 / SAMPLE-AES encryption

מקור: kaltura/nginx-vod-module: NGINX-based MP4 Repackager

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