Extension:TimedMediaHandler/2018-2019 work
Current rough plans for the 2018-2019 season's work on TimedMediaHandler:
Immediate (Q1) edit
Feature track
- subtitle API with lax runtime conversion from SRT to VTT
Done
- finish old subtitle API patch updated with new conversion engine
- deploy, or prepare, deployment of video.js Done
- remove old kaltura player bits from TMH
Not done
Tech track
- switch to VP9 transcodes (smaller file sizes for many, better quality for most) Done
- merging final patches, then ready to start any time!
- update ogv.js to latest release (minor VP9 fixes) Done
- tweak ogv.js thread management to handle large number of paused players better Done
Next steps (Q2-Q3) edit
Feature track
- customize frontend controls for videojs-mode players Not done
- inline start/stop Done
- easy expansion to zooming player into MediaViewer Done
- inline start/stop
- get video playback working in iOS Wikipedia mobile app Not done
- either tidy up OGVKit or ship the ogv.js player embedded
- clean up reporting tools for transcode errors, queue state (Special:TimedMediaHandler, File: page table) Not done
- experiment with frontend UI for on-wiki audio/video trimming/rotation manipulation tool Not done
- experiment with frontend UI for on-wiki subtitle editing tool Not done
Tech track
- ogv.js work for MPEG-DASH adaptive streaming Not done
- add MSE interfaces to ogv.js Not done
- get video.js's DASH talking to ogv.js
- add MSE interfaces to ogv.js
- ffmpeg research for MPEG-DASH adaptive streaming
In progress
- create webm vp9 file-per-track streams and play them back with video.js
- create webm vp9 chunked streams and play them back with video.js
- create webm vp9 chunked streams through multiple separate ffmpeg invocations and stitch the manifests together (desired for better job queue management)
- research on-wik trimming rotation / manipulation tool Not done
- conversions done with ffmpeg command options
Medium future (Q4) edit
Feature track
- experiment with on-wiki trimming / rotation manipulation tool Not done
- experiment or deploy on-wiki subtitle editing tool Not done
Tech track
- (optional) limit flat files to lower resolution to save space Not done
- deploy MPEG-DASH adaptive streaming to supplement existing flat files Not done
Farther future edit
Feature track
- re-evaluate more advanced video manipulation and editing
Tech track
- evaluate AV1 compression & playback for eventual supplement/replacement of VP9 Not done
- evaluate MP4 H.264, HEVC, AAC ingest Not done
- set up MP4 H.264 output options for compatibility if license issues ever resolved