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#1307 Video recording of VDC is far too big. VIC-II is too small

v3.6
closed-fixed
nobody
None
x128
2025-11-18
2020-10-05
Strobe
No

So I tried an ffmpeg record for the fist time (defaults with static ffmpeg) and of course it's bugged:

  • VDC video recording is coming out as 848x1024 not the actual displayed height of ~288.
  • VIC-II has some of the lower border chopped off. In the AVI file the video resolution is set to "384x272" even though the buffer dimensions are "384x288" (according to VLC). Both values should be 288 to not chop the border off..

Discussion

  • Strobe

    Strobe - 2020-10-05
    • Description has changed:

    Diff:

    --- old
    +++ new
    @@ -1,3 +1,3 @@
     So I tried an ffmpeg record for the fist time (defaults with static ffmpeg) and of course it's bugged:
    
     - VDC video recording is coming out as 848x1024 not the actual displayed height of ~288.
    -- VIC-II has some of the lower border chopped off. In the AVI file the video resolution is set to "384x272" even though the buffer dimensions are "384x288" (according to VLC).
    +- VIC-II has some of the lower border chopped off. In the AVI file the video resolution is set to "384x272" even though the buffer dimensions are "384x288" (according to VLC). Both values should be 288 to not chop the border off..
    
     
  • Strobe

    Strobe - 2020-10-05

    Mostly fixed for VDC in r38683. Aspect ratio is still wrong for VDC and VIC-II is still chopped off at the bottom for video (but not for still images e.g. PNG)

    For others that want to look at the VIC-II side, through trial & error I determined that the media size seems to be mostly determined from raster->geometry->first_displayed-line / last_displayed_line
    x64/x64sc recorded video is chopped off at the bottom. It's not obvious where the 272 vs 288 height difference is coming from.

     
  • gpz

    gpz - 2020-10-11

    can we close this now? :)

     
  • gpz

    gpz - 2025-11-18

    in trunk:

    VIC: 384x272 VDC: 856x288

    same values shown in mplayer and vlc (and in vlc the buffer size is the same too)

    closing :)

    PS: i used ZMBV to record, which is the recommended way now anyway

     

    Last edit: gpz 2025-11-18
  • gpz

    gpz - 2025-11-18
    • status: open --> closed-fixed
     

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