SECAM uses the same bandwidth as PAL but transmits the colour information sequentially.
SECAM制式为PAL使用相同的带宽,但颜色的资料传送顺序。
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You can alter this behavior by editing /etc/kboot.conf — for the purposes of this article series, you'll want to run in one of the RGB modes, either 480i for NTSC users or 576i for PAL/SECAM users.