Current Limitations
Besides not matching all of the features and function of DxVA (which is the Microsoft equivalent API for Windows), and lacking support for other video formats than MPEG-2 in Linux device drivers from Intel and NVIDIA, the XvMC API specification version 1.0 currently also has these other limitations:
- BOB and onefield are the only deinterlacing methods that work with XvMC.
- Picture in Picture (PiP) does not work with XvMC.
- Stepping through the video frame by frame can cause artifacts with XvMC.
- Editing a video is difficult to impossible with XvMC activated.
- Lacking network transparency in the XvMC API
- Lacking the ability for the client application to be completely independent of which client side library needs to be used (i.e. a unified wrapper library).
A project called VA API is underway to develop a more modern video acceleration API which will support the video acceleration features of modern GPUs.
Read more about this topic: X-Video Motion Compensation
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