<div class="gmail_quote">On Sat, Sep 12, 2009 at 6:07 AM, Clark Lee <span dir="ltr"><<a href="mailto:clarkchen900@yahoo.com.cn">clarkchen900@yahoo.com.cn</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I am using an external STB for composite video and audio input for TV signal. The signal is PAL-DK of China<br>
The LiveTV/Record profile are using default settings as RTjpeg, quality 170, etc.<br>
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The video has some annoying problem, as the all the horizantal lines, especiall white lines with black/dark background, seems blinking with a few Hz frequency.<br>
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This problem doesn't exist if I use TvTime to view the signal from the same STB box and capture card. I would say, TvTime's video quality is far better than LiveTV in MythTV. I know that Mythtv is always encoding the incoming signal first and than play it back. However, do I must bear the blinking lines?<br>
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Is this a problem of the RTjpeg encoding or my setup issue?<br>
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I have tried MPEG4 with default soft encoding - turned to be an even worse solution. Is this true?<br>
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Thanks very much,<br>
<br>
Clark<br>
</blockquote></div><br>It's not the encoding, it's that Myth shows you more of the 'overscan' area. What you're seeing is data embedded in the signal - in the US it's used for Closed Captioning (subtitles), in your country it may be the same, or for some other data.<br>
<br>But it's a simple fix - setup your system for 2% overscan in myth.<br> Utilities/Setup -> Setup -> Tv Settings -> Playback -> Page 2<br> Vertical Scaling: 2<br> Horizontal Scaling: 2<br>
Then select "Next" to go through the remaining screens until you get to "Finish" to save the settings.<br><br>That should take care of that issue. <br><br>J-e-f-f-A<br>