we want to use nDVR to provide TV catchup functionality on a larger period of time.
From the startup guide i see there's a limit on the recording time set to 30 hours.
"Wowza nDVR has a recording limit of 30 hours. In real-world deployments, serving playlist data this large won't work"
We will use the nDVR Playlist Request API and the requested playlist window won't be too large (typical tv show length, max 2-4 hours).
Can we have a continuous recording over a longer period in these conditions or is there a hard max limit?
After a period of time (2 weeks) we want to selectively keeps chunks (still be available to playlist requests) and delete the rest to save space.
Which is the recommended way to manage/cleanup the chunks?
In the startup guide i see: "Important: Don't delete or move any of these files or playback errors will occur.". If we delete only the chunks that won't be requested anymore through the nDVR Playlist API will there be any issues?We want to manage time intervals that are kept/removed so we need to know how to find the chunks that need to be kept/removed.
So we need to continuously record and be able to request playlist based on UTC time intervals that will be short in length and manage/cleanup the space used.
It sounds like you have the DVR configuration working to a maximum capacity. It would be my suggestion that you implement a stream recording strategy, to run in paralell with your nDVR workflow, for the purpose of archiving recordings beyond the practical limitations of the nDVR AddOn.
Wowza Streaming Engine™ software has a new system that enables you to access and control Stream Recorders (formerly LiveStreamRecorders) by using either Wowza Streaming Engine™ Manager or Java APIs. Stream Recorders can be started, monitored, and controlled in Wowza Streaming Engine Manager or programmatically by using new LiveStreamRecordManager APIs. Wowza Streaming Engine software supports legacy LiveStreamRecord URLs, which can also be monitored and controlled in Streaming Engine manager or by using the LiveStreamRecordManager APIs.
Using this approach, you may record segments of your recordings to VOD assets that can be retrieved using standard playback logic, as needed.
Playing a clip that spans mp4 files would be difficult, especially across client types. You might work something out for RTMP playback
starting with this method. It would be best if the segments you were going to playback were contained within one file. Then you can also use
this method for HTTP playback