precision camera and video

: v4l2_fmt_flag_compressed, otherwise 0__u8 description[32]; Description of the image format, such as YUV 4:2:2 (YUYV)__u32 PixelFormat; The supported formats. such as: V4l2_pix_fmt_uyvy__u32 Reserved[4];};This way, you know what image format the current hardware supports. Next, you can set the image. Of course, you can also read the current default settings before setting.3. Get and set image format:vidioc_g_fmt, vidioc_s_fmt:3.1: Get the current image Format:struct V4l2_format format;memset (f

Let's play the video function of the mobile phone. Do a demo. look at the recording process： Copy Code code as follows: Mediarecorder = new Mediarecorder ();//Create Mediarecorder Object Set the recording video source to camera (camera) Mediarecorder.setvideosource (MediaRecorder.VideoSource.CAMERA); S

Some friends may have met on the "My Computer" when the camera to open the prompt "failed to create a video preview, please check the device connection," but can be through the QQ video, this is how it? How to solve? Killing virus Generally encountered such problems, first of all, to the computer antivirus, if it is a virus to cause file damage, need to kill

Original address: http://blog.csdn.net/yanzi1225627/article/details/8605061#Many times, the Android camera module not only previews, take pictures so simple, but need to preview the video, can make some detection, such as the most common face detection. Before the camera button is pressed, the face is detected and the rectangle is marked, followed by the photo. S

Analog camera, AV video signal line decoding, PAL system NTSC, input decoding display, finally fix, record!We commonly used cameras, monitoring, and so on, most of them are AV signals, domestic standards are pal, using coaxial, transmission, the advantage is that the transmission distance can be very long, and simple line. AV cameras are also used mostly in video

Let's play with the video recording function of mobile phones. Make a DEMO. Check the recording process: Copy codeThe Code is as follows: mediarecorder = new MediaRecorder (); // create a mediarecorder object // Set the recorded video source to Camera (Camera) Mediarecorder. setVideoSource (MediaRecorder. VideoSource.

You can use uiimagepickercontroller to record or take a video from the camera. However, uiimagepickercontroller will display its own interface, but sometimes we do not want to display this interface, you can use another method to obtain the data obtained by the camera. First, you need to introduce a package # import -(Void) captureoutput :( avcaptureoutput *) c

The application of video chat can be shown in the following block diagram. So we need to get video data (YUV420SP) from camera, compress it into h264/mpeg4/h263 package, and then pass it to the other side. Receive the other party's compression package, extract it to display on the LCD.In Android, you can get YUV data for each Peview frame by setting the Previewca

To the photographic enthusiasts to share a detailed analysis of the Canon 600D camera video Snapshot function of the method of shooting. Analytical sharing: 1. Put the mode turntable in short film shooting mode Rotate mode turntable, select short shot mode. 2. Open is Image Stabilizer If the lens carries the IS image stabilizer when carrying a handheld shot, place its switch on (open). 3. Set the

The first thing to consider when making a live video is the bandwidth issue, where the player must have enough bandwidth to support multiple people watching live. If you have 1000 customers per customer with 512Kb bandwidth, you will have at least 50M of bandwidth at the end of your playback.Next to see, to consider the video live platform function, whether to support the server cluster, or else can not sup

We commonly used cameras, monitoring, and so on, most of them are AV signals, domestic standards are pal, using coaxial, transmission, the advantage is that the transmission distance can be very long, and simple line. AV cameras are also used mostly in video arrays.Commonly used set-top boxes, televisions, STB final output of the image signal to the TV, most of them are cvbs, mixed signals, wherein the video