2017-09-20 02:35:05 +00:00
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Live
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====
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A typical live source is UDP multicast, which is the only live protocol
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packager supports directly right now.
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For other unsupported protocols, you can use FFmpeg to pipe the input.
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See :doc:`ffmpeg_piping` for details.
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Examples
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--------
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The command is similar to the on-demand, see :doc:`dash` and :doc:`hls`.
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Here are some examples.
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* DASH::
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$ packager \
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'in=udp://225.1.1.8:8001?interface=172.29.46.122,stream=audio,init_segment=audio_init.mp4,segment_template=audio_$Number$.m4s' \
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'in=udp://225.1.1.8:8001?interface=172.29.46.122,stream=video,init_segment=h264_360p_init.mp4,segment_template=h264_360p_$Number$.m4s' \
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'in=udp://225.1.1.8:8002?interface=172.29.46.122,stream=video,init_segment=h264_480p_init.mp4,segment_template=h264_480p_$Number$.m4s' \
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'in=udp://225.1.1.8:8003?interface=172.29.46.122,stream=video,init_segment=h264_720p_init.mp4,segment_template=h264_720p_$Number$.m4s' \
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'in=udp://225.1.1.8:8004?interface=172.29.46.122,stream=video,init_segment=h264_1080p_init.mp4,segment_template=h264_1080p_$Number$.m4s' \
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--mpd_output h264.mpd
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* HLS::
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$ packager \
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'in=udp://225.1.1.8:8001?interface=172.29.46.122,stream=audio,init_segment=audio_init.mp4,segment_template=audio_$Number$.m4s,playlist_name=audio.m3u8,hls_group_id=audio,hls_name=ENGLISH' \
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'in=udp://225.1.1.8:8001?interface=172.29.46.122,stream=video,init_segment=h264_360p_init.mp4,segment_template=h264_360p_$Number$.m4s,playlist_name=h264_360p.m3u8' \
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'in=udp://225.1.1.8:8002?interface=172.29.46.122,stream=video,init_segment=h264_480p_init.mp4,segment_template=h264_480p_$Number$.m4s,playlist_name=h264_480p.m3u8' \
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'in=udp://225.1.1.8:8003?interface=172.29.46.122,stream=video,init_segment=h264_720p_init.mp4,segment_template=h264_720p_$Number$.m4s,playlist_name=h264_720p.m3u8' \
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'in=udp://225.1.1.8:8004?interface=172.29.46.122,stream=video,init_segment=h264_1080p_init.mp4,segment_template=h264_1080p_$Number$.m4s,playlist_name=h264_1080p.m3u8' \
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2018-06-07 23:05:00 +00:00
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--hls_master_playlist_output h264_master.m3u8 \
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--hls_playlist_type LIVE
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2017-09-20 02:35:05 +00:00
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.. note::
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2018-05-23 23:12:00 +00:00
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Packager supports removing old segments automatically. See
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`preserved_segments_outside_live_window` option in
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:doc:`/options/dash_options` or :doc:`/options/hls_options` for details.
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.. note::
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Shaka Packager ensures all segments referenced in DASH manifest / HLS
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playlists are available, by updating the manifest / playlists only after a
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segment is completed.
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However, if content is not served directly from packaging output location,
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extra care must be taken outside of packager to avoid updating manifest /
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playlists without updating media segments.
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Here is an example flow that avoids potential race condition. The following
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steps should be done SERIALLY AND IN ORDER in every sync loop when uploading
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manifest / playlists and media segments to content server:
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1. Upload manifest / playlists under different names
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2. Upload / Sync media segments
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3. Rename uploaded manifest / playlists back to the original names
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2017-10-24 22:51:02 +00:00
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.. include:: /options/udp_file_options.rst
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.. include:: /options/segment_template_formatting.rst
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