x264 option reset or not sticking

avwtp

A few of the options are reset by the plugin to lower values or not retained between successive entries into the dialog.

* Max Quantizer limited to 69

* Zones is cleared each time options is entered (but the Zones values will work on a single run)

* Frame lookahead is clamped at 250

for NVENC

* Surfaces is clamped at 64 but if you look at a log message, internally it is increased

Vouk

According to https://encodingwissen.de/codecs/x264/re…qpmax-quantizer qpmax has to be in the range of 1-69 (0 means disabled)
The issue with "zones" and similar string input options is a known. The separators "," conflict with same named separators with FFmpegs / libavs av_dict_parse_string() function. I should actually remove these non-working options ...
Removed rc-lookahead max. limit
FFmpeg only allows surfaces values betwen 0 and 64 but it increases the value internally based on the given rc_lookahead.

avwtp

Zones option DOES actually get recognized and works. Value just doesn't stick between entries into the dialog.

Good to know on qpmax. Maybe a note in the tooltip pop is to state the maximum.

OK, so I can ignore "helping" FFmpeg on surfaces

Thanks.

Vouk 8. April 2020 um 11:37