Manifest optimization

[Marishka17]

My actions before raising this issue

• Read/searched the docs
• Searched past issues

It is necessary to optimize the work with the manifest.

Current Behaviour

1. process of preparing all necessary information
2. process of manifest creating

Possible Solution

1. storage of the current state
2. iterative process of preparing a manifest in parts, the size is determined automatically based on the data
3. all analysis, checks, preparing manifest(collecting meta) in 1 pass through the video

Context

Your Environment

• Git hash commit (git log -1):
• Docker version docker version (e.g. Docker 17.0.05):
• Are you using Docker Swarm or Kubernetes?
• Operating System and version (e.g. Linux, Windows, MacOS):
• Code example or link to GitHub repo or gist to reproduce problem:
• Other diagnostic information / logs:
  Logs from `cvat` container

Next steps

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