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IRIX Base Documentation 2001 May
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SGI IRIX Base Documentation 2001 May.iso
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relnotes
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impactvideo
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2001-04-17
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3. _K_n_o_w_n__P_r_o_b_l_e_m_s__a_n_d__W_o_r_k_a_r_o_u_n_d_s
_V_i_d_e_o _C_o_n_t_r_o_l _P_a_n_e_l (_V_C_P)
+o For information about the video control panel options
for the Indigo2 IMPACT Video board, refer to Chapter 4
of the Indigo2 IMPACT Video Owner's Guide.
+o For OCTANE Digtial Video video control panel options,
please refer to refer to Chapter XX of the OCTANE
Digital Video Owner's Guide.
_T_i_m_i_n_g _T_a_b_l_e_s
+o When locking graphics to video (frame lock) set the
timing on the video device before using setmon to
change the graphics timing table. If the video device
timing is changed after the timing table is changed,
the X-server will hang and must be reset.
_V_i_d_e_o _S_o_u_r_c_e_s
+o The inputs to OCTANE Digital Video or IMPACT Video
should not be disconnected while they are being
displayed on the screen by applications such as
Videoin.
If the inputs are disconnected, subsequent video-to-
screen or screen-to-video applications may perform
unreliably, sending / displaying corrupt video. To
remedy this condition, kill and restart the video
daemon (videod). This will re-initialize the OCTANE
Digital Video or IMPACT Video device to a default
state.
_S_c_r_e_e_n _S_o_u_r_c_e_s (_V_i_d_e_o_o_u_t)
+o When a gfx to video path and a video to gfx path are
used simultaneously, the video output may contain a
line from the video input in the vertical blanking area
(line 1).
_S_c_r_e_e_n _D_r_a_i_n_s (_V_i_d_e_o_i_n)
+o When screen drain 2 (Window C) is used with zoom
(VL_ZOOM) 1/7, the video displayed in windows B and C
will contain horizontal streaking.
+o If screen drains 1 and 2 (Window B and Window C) are
both used, their Y origins (VL_ORIGIN) should be
identical, or they should not overlap at all. If they
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overlap imperfectly in the Y direction, a horizontal
line may appear in Window B corresponding to top of
window C.
+o If the horizontal or vertical size of a screen drain is
less than five lines tall or five pixels across, other
screen drains may display garbage. While it is not
possible to set the size smaller than 5x5 using
vlSetControl, the automatic window placement and
constraining logic may result in smaller windows.
+o If multiple screen drains are used and one of the
drains is zoomed up, the window constraining logic may
incorrectly place / size the zoomed window (i.e. it may
overlap with another window). This results in the
displayed video not matching the size and/or location
of the window.