Trying to deinterlace with Bob NVEnc; job crashes

[Selur]

CUVID adaptive works by outputting one frame for 1 field.

Got any documentation about this?
Because normally adaptive deinterlacing means:
Deinterlaces looks at the input frame:
- in case it's marked as progressive, the frame is kept.
- in case it's marked as interlaced, two field will be converted into one
Deinterlacing while creating one progressive frame per field is normally called bob deinterlacing.

Also:

-drop_second_field <boolean>    .D.V....... Drop second field when deinterlacing (default false)

wouldn't make any sense when the adaptive deinterlacer wasn't a same-frame-rate-deinterlacer which creates one progressive frame for two fields.

-> Unless you can show me actual documentation I'm not starting changing things.

One more thing to keep in mind: for mpeg2_cuvid, it is required that the final expected framerate be specified through FFmpeg, by using the option "-r <output_framerate>", basically overriding the input framerate. In my cases, I would need to add "-r 50", right before mpeg2_cuvid. I would advise using this option for all cuvid decoders, because testing each of them whether or not they require it is very time consuming.

Documentation?


Reading https://trac.ffmpeg.org/ticket/6971 sounds to me like current cuvid is buggy for quite some time,...

Cu Selur