晴空's Blog

DAR: Display Aspect Ratio, 可以通过MediaInfo获取. 要么为16:9, 要么为4:3.SAR: Storage Aspect Ratio, 片源每帧的width/height值.PAR: Pixel Aspect Ratio. 1:1 表示square pixels. 表示每个像素的宽高比.相互的关系:         DAR = SAR * PAR.         PAR = DAR /  SAR. Video Format (WxH)NameStorag

<br />1. identity element的回调.<br />    static void my_handoff(GstElement *identity, GstBuffer *buffer, GstPad *pad, gpointer user_data){ unsigned int buflen; unsigned long int bufpts, bufdur; buflen = GST_BUFFER_SIZE(buffer); bufpts

<br />DirectShow:<br />DirectShow (sometimes abbreviated as DS or DShow), codename Quartz, is a multimedia framework and API produced by Microsoft for software developers to perform various operations with media files or streams. DirectShow provides a co