[HELP] Old AVI seems to have an unworkable frame rate, don't know what to do

[Dyshonest]

The best way to treat the source is probably to:

• enable "Config->Automation->Always extract timecode from input" (+ disable "only some")
  
• enable "Config->Input->Decoding->CFR output" (so the decoder will decode to cfr)
  
• enable "Filtering->Misc->Overwrite input frame rate" to "29.97" (so Hybrid will treat the source as if it was flagged as 29.97fps)
  
• enable "Filtering->(De-)Interlace/Telecine->Deinterlace/Telecine Settings->Overwrite input scan type" and set it to "top field first"
  
• enable "Filtering->(De-)Interlace/Telecine->QTGMC Vapoursynth->Bob" if you want to keep all motion information.
  
• add whatever additional filtering you deem proper.
  

Cu Selur

The last two steps result in an incredibly long and slowed down file. The former three lead to a desynced file.

If combined with Filtering->Speed Change->Scale output frame rate AND Change speed to 29.97, it yields a properly synced video file that Hybrid reports as having 40664 frames, and that Topaz Video AI and Media Player reports as having 40680 frames.

I'll just have to see if Topaz can process the video out of Hybrid properly. It is flagged as CFR at least. And Topaz' reported frame count is at least represented by something else (Media Player), if it's going to have errors with a file it's usually when it's still VFR and will have a lower frame count than Hybrid/ffmpeg/Media Player actually report.

Certainly a lot of unique issues working with old video files like this, lol.