subject_23122.htm

一些关于vc的问答

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序号：23122 发表者：DreamFly 发表日期：2002-12-01 20:14:17
<br>主题：设置DS中DV视频视频源格式大小!
<br>内容：我使用的是Sony摄像机为视频源，想用下面的方法设置视频的格式(720X576大小），但始终不能正确设置，请问高手，原因是事么？<BR>&nbsp;&nbsp;&nbsp;&nbsp;CMediaType VideoType;<BR>&nbsp;&nbsp;&nbsp;&nbsp;VideoType.SetType( &amp;MEDIATYPE_Video );<BR>&nbsp;&nbsp;&nbsp;&nbsp;VideoType.SetSubtype( &amp;MEDIASUBTYPE_RGB24 );<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;VIDEOINFOHEADER *pVideoHeader = (VIDEOINFOHEADER*)&nbsp;&nbsp; VideoType.AllocFormatBuffer(sizeof(VIDEOINFOHEADER));<BR>&nbsp;&nbsp;&nbsp;&nbsp;ZeroMemory(pVideoHeader, sizeof(VIDEOINFOHEADER));<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biBitCount = 24;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biWidth = 720;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biHeight = 576;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biPlanes = 1;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biSize = sizeof(BITMAPINFOHEADER);<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biCompression&nbsp;&nbsp;= BI_RGB;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pVideoHeader-&gt;bmiHeader.biSizeImage = DIBSIZE(pVideoHeader-&gt;bmiHeader);<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;VideoType.SetFormatType(&amp;FORMAT_VideoInfo);<BR>&nbsp;&nbsp;&nbsp;&nbsp;VideoType.SetSampleSize(DIBSIZE(pVideoHeader-&gt;bmiHeader));<BR><BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; m_pGrabber-&gt;SetMediaType( &amp;VideoType ); <BR><BR>2002-12-3 19:33:46