Planetary Imager

Frequently Asked Questions

Q: AVI recording doesn't seem to work.

A: AVI recording is not the best way to record images, and it's quite complicated to implement (dealing with media libraries like ffmpeg, compiling the right codec support, and dealing with performances), so right now there is a very minimal support provided by OpenCV. It's likely that AVI support will be entirely removed in one of the next releases. You should always choose SER (which is basically RAW) for recording videos:

  • AVI is much slower (since SER is RAW recording, so no CPU time for encoding and compressing frames will be wasted). This means you can't achieve fast FPS rates with AVI.
  • AVI is a lossy format (with a few exception for some codecs), so you'd likely loose some quality in your frames.
  • AVI supports only 8 bit images, SER supports up to 16

SER is supported by the most popular preprocessing and processing tools: I personally recommend PIPP for preprocessing, and Autostakkert for stacking. AVI has the only advantage of producing smaller files (but remember, you pay this by loosing quality). You can still compress a SER file anyway for archiving, or, if you really want an AVI, use a third party application like PIPP to convert the files.