Can I feed video data directly into H.264 encoder on Bluecherry H.264 PCIe capture card using provided API? For instance, I'd like to encode sequence of YUV420P frames. I'm not interested in using video input connectors. If I understand correctly, solo_osd_print function is capable of changing contents of video frame. But I'm not sure if this API is fast enough to be used in realtime video encoding.