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UNTESTED: note trailing zeros in /recordings reply

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Scott Lamb
2021-10-10 16:13:57 -07:00
parent ecbe86153d
commit ad35a1ca5e
4 changed files with 18 additions and 2 deletions
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12
design/api.md
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@@ -332,6 +332,13 @@ arbitrary order. Each recording object has the following properties:
* `videoSamples`: the number of samples (aka frames) of video in this
recording.
* `sampleFileBytes`: the number of bytes of video in this recording.
* `hasTrailingZero`: the final frame of the final recording id described by
this row (`endId` if present, otherwise `startId`) has a duration of 0.
A frame's duration is calculated by subtracting its timestamp from the
following frame's timestamp. When a run ends, there's no following frame
and Moonfire NVR fills in a duration of 0. When using `/view.mp4`, it's
not possible to append additional segments after such frames, as noted
below.
Under the property `videoSampleEntries`, an object mapping ids to objects with
the following properties:
@@ -456,8 +463,9 @@ Bugs and limitations:
* The final recording in every "run" ends with a frame that has duration 0.
It's not possible to append additional segments after such a frame;
the server will return an error like `Invalid argument: unable to append
recording 2/16672 after recording 2/16671 with trailing zero`.
(See [#178](https://github.com/scottlamb/moonfire-nvr/issues/178).)
recording 2/16672 after recording 2/16671 with trailing zero`. See also
`hasTrailingZero` above, and
[#178](https://github.com/scottlamb/moonfire-nvr/issues/178).
### `GET /api/cameras/<uuid>/<stream>/view.mp4.txt`