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| Warning |
|---|
When using HLS ABR on a single server, any published stream will be transcoded to a number of qualities. This requires a lot of server CPU cores and RAM. |
Qualities order in HLS ABR manifest
Before build 5.2.1606, HLS ABR manifest qualities are sorted in profile names alphabetical order, for example, such cdn_profiles.yml or hls_abr_profiles.yml
| Code Block | ||||
|---|---|---|---|---|
| ||||
profiles:
360:
video:
height : 360
bitrate : 1000
codec : h264
codecImpl : OPENH264
gop : 60
fps : 30
720:
video:
height : 720
bitrate : 2000
codec : h264
codecImpl : OPENH264
gop : 60
fps : 30
1080:
video:
height : 1080
bitrate : 2500
codec : h264
codecImpl : OPENH264
gop : 60
fps : 30 |
give the following manifest
| Code Block | ||
|---|---|---|
| ||
#EXTM3U
#EXT-X-STREAM-INF:BANDWIDTH=2500000,RESOLUTION=1920x1080,CODECS="avc1.42e01f,mp4a.40.2"
1080/1080.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1000000,RESOLUTION=640x360,CODECS="avc1.42e01f,mp4a.40.2"
360/360.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2000000,RESOLUTION=1280x720,CODECS="avc1.42e01f,mp4a.40.2"
720/720.m3u8 |
Since build 5.2.1606, manifest qualities order equals to profiles order in cdn_profiles.yml or hls_abr_profiles.yml
| Code Block | ||
|---|---|---|
| ||
#EXTM3U
#EXT-X-STREAM-INF:BANDWIDTH=1000000,RESOLUTION=640x360,CODECS="avc1.42e01f,mp4a.40.2"
360/360.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2000000,RESOLUTION=1280x720,CODECS="avc1.42e01f,mp4a.40.2"
720/720.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=2500000,RESOLUTION=1920x1080,CODECS="avc1.42e01f,mp4a.40.2"
1080/1080.m3u8 |
Maximum playlist size
Maximum playlist size in segments is defined by the following parameter
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