16.11 seek broken on mplayer for some videos

[icy]

[rvm]

What operating system are you using? What version of mplayer?

[icy]

Windows 7 64-bit. From the About box:

SMPlayer Version 16.11.0 (revision 8242) (64-bit)
Using Qt 5.6.0 (compiled with Qt 5.6.0)
Using MPlayer SVN r37871

[rvm]

Maybe a bug in the version of mplayer included in the package. However I can't reproduce the problem in my computer, seek works fine with mp4.

Do you have the same problem if you select mpv as multimedia engine? (preferences -> general)

[icy]

I suspect it's not about mp4 in general, since it's happening to my .flv-turned-.mp4 . To record, I used the open recording software OBS https://obsproject.com/download .
My older videos were done in what they now call "OBS Classic", version: 0.659b . This created .flv files natively, but apparently with missing key indexes. It's in these videos that I cannot seek, even after they're converted to .mp4.

I recently obtained the newer OBS Studio, which natively creates .mp4 files with key indexes, and I have no issues seeking the generated files, even if they are big.

icy`