Windows Media Format SDK cut WMV/WMA files

Someone asked for help cutting the WMV file:

I have read the wmvcopy example in the Windows Media Format SDK. This example provides the WMV cutting function by inputting a time range parameter (from 0 s to X S ), however, what I want to achieve is the cut from a second to B second. Besides, I cannot understand where maxduration is used, which of the following statements can help you !!!!!!
 
I have similar requirements. After reading the Windows Media Format SDK, I found it quite simple.

You only need to add two lines of code in cwmvcopy: onstreamsample:

If (cnssampletime <m_qwfrompos)
Return (HR); // skip head

You can start cutting in seconds.

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In addition, the SDK example wmvcopy has an obvious bug. You cannot copy large files. You must modify it a bit.

Uploaded resources:

Source program of wmvcopy

Http://download.csdn.net/detail/jq0123/3838130

• Resource size: 13kb
• Upload Date: 2011-11-24
• Resource points: 1 point