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  • checkasm/sw_scale : Fix stack-buffer-overflow

    19 mai 2020, par Andreas Rheinhardt
    checkasm/sw_scale : Fix stack-buffer-overflow

    A buffer whose size is not a multiple of four has been initialized using
    
consecutive writes of 32bits. This results in a stack-buffer-overflow
    
reported by ASAN in the checkasm-sw_scale FATE-test.
    

    Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] tests/checkasm/sw_scale.c

  • MPV (FFmpeg) stack 2 videos and then crop output without re-encoding ?

    3 juin 2020, par crackerbear

    I have two 16:9 ratio videos, I want to horizontally stack them, but then crop the resulting video output by about 900px from the right border whilst playing it within mpv and without re-encoding.

    &#xA;&#xA;

    Libavfilter does have a crop functionality, but in all examples I've found, the cropping happens before stacking. (Visual representation of what I want to achieve)

    &#xA;&#xA;

    I currently have this which somewhat does what I want :

    &#xA;&#xA;

    mpv "F:\1.mp4" --external-file="F:\2.mp4" --lavfi-complex="[vid1] scale=1920x1080:flags=spline [vid1_scale]; [vid2] scale=1920x1080:flags=spline [vid2_scale]; [vid1_scale][vid2_scale] hstack [vo]"&#xA;

    &#xA;&#xA;

    Is it possible to crop the video output after stacking ?

    &#xA;

  • avcodec/wnv1 : Move temporary variables from context to stack

    29 août 2020, par Andreas Rheinhardt
    avcodec/wnv1 : Move temporary variables from context to stack

    Here it even leads to the complete removal of the context.
    

    Reviewed-by : Paul B Mahol <onemda@gmail.com>
    
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
    • [DH] libavcodec/wnv1.c

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