Monitoring manifest update time in AWS Elemental MediaPackage
MediaPackage playback responses include the following custom headers that indicate when MediaPackage last modified the manifest in non-dynamic ad insertion workflows. These headers are helpful when troubleshooting issues related to stale manifests.
- X-Amzn-Mediapackage-Manifest-Last-Part
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This is only provided on requests for low-latency HLS manifests, and is the highest part sequence number in the manifest.
- X-MediaPackage-Manifest-Last-Sequence
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This is the highest segment sequence number in the manifest.
For HLS and CMAF, this is the highest segment number in the media playlist.
See the following section for manifest example.
- X-MediaPackage-Manifest-Last-Updated
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The epoch timestamp in milliseconds when MediaPackage generates the segment referred to in
X-MediaPackage-Manifest-Last-Sequence.
HLS manifest example
HLS manifest
MediaPackage determines the X-MediaPackage-Manifest-Last-Sequence value from the
last segment in the manifest. For example, in the following manifest
index_1_3.ts is the highest segment sequence number, so the value of
X-MediaPackage-Manifest-Last-Sequence is 3. The value of
X-MediaPackage-Manifest-Last-Updated corresponds to the epoch timestamp in
milliseconds when MediaPackage generates the last segment in the manifest.
#EXTM3U #EXT-X-VERSION:3 #EXT-X-TARGETDURATION:8 #EXT-X-MEDIA-SEQUENCE:0 #EXTINF:7.500, index_1_0.ts?m=1583172400 #EXTINF:7.500, index_1_1.ts?m=1583172400 #EXTINF:7.500, index_1_2.ts?m=1583172400 #EXTINF:7.500, index_1_3.ts?m=1583172400 #EXT-X-ENDLIST
