SLR shooting can be displayed on TV screen synchronously, and the fixed frame after SLR shooting can be saved on ipad for preview. How to achieve it?

Yes, use a computer and buy a video capture card. Tian Min in China is OK. Insert it into the PCI slot of the computer and install the driver and the accompanying software. In this way, the SLR video can be collected synchronously by the computer and stored in the computer.

The storage hard disk of the computer should be large. If you shoot 1080 HD, you will get dozens of G's for half an hour.

Everyone knows that the scalability of ipad is not enough to do such a thing directly. However, the video collected by the computer can be converted and compressed by software, and the video can be converted into video formats supported by ipad, such as H.264 and mp4, and compressed from dozens of G's to dozens of M's, and then copied to the ipad through iTunes software for storage, so that it can be previewed. It's just that the video is far from the high definition of 1080 on the computer. Fortunately, the screen of ipad is small, the video in H.264 format is not bad, and it is still very clear on ipad.

Use cydia to escape from prison, use it to break the restrictions of ipad, install plug-ins, buy switching cables, and install video capture software on ipad. You can still use the ipad as the display of the SLR camera and shoot videos. Only after the prison break, the ipad no longer has a warranty. Moreover, the storage capacity of ipad is limited, and it can only store videos with high compression rate formats such as H.264 and mp4, so it cannot enjoy the high definition of 1080.