h.264

I know that in h264 we can detect a NAL Unit by the bit pattern 0x000001 . Is there an equivalent method to detect a slice header in a NAL Unit? How does one handle multi-slice NAL units? Currently I'm using parsing code for h264 and get the slice header in a respective structure. The slice header syntax is discussed on page 36 (section 7.3.3) of the H.264 standard . It might be worth having a look at the reference software . 来源： https://stackoverflow.com/questions/10612893/h264-parsing-slice-header-detection

I'm manually reading a RTP/H264 stream and pass the H264 frames to the Android MediaCodec. I use the "markerBit" as a border for the frames. The MediaCodec is tied to a OpenGL Texture (SurfaceTexture). In general everything works fine. But the Decoder appears to buffer frames. If I put a frame in the decoder it is not rendered immediately to the texture. After I put 2-3 frames more in the decoder the first frame is rendered to the texture. I'm implementing against Android 4.4.4. private static final int INFINITE_TIMEOUT = -1; private static final int TIMEOUT_OUTPUT_BUFFER_MEDIA_CODEC = 1000; .

I'm trying to put by decoded ffmpeg buffer into a QFrame so I can put this frame into a QAbstractVideoBuffer and then put this buffer into a QMediaPlayer . Here's the code for the VideoSurface. According to QT's documentation, I just have to implement these two functions: constructor and bool present , which processes the frame into the QVideoFrame named frame QList<QVideoFrame::PixelFormat> VideoSurface::supportedPixelFormats(QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const { Q_UNUSED(handleType); // Return the formats you will support return QList

I need to split mpeg4 video stream (actually from android video camera) to send it through RTP. The specification is little large for quick reference. I wonder if there any example/open source code for mpeg4 packetization? Thanks for any help ! Mpeg4 file format is also called ISO/IEC 14496-14. Google it any you will find specifications. However, what you are trying to do (RTP publisher) will be hard for the following reasons: Mpeg4 has header at the end of the file. Which means header will be written out only when video stream is finished. Since you want to do real time video streaming you

I'm working on an image processing project for the Parrot AR.drone, using opencv4Android, i'm so new to the whole thing! , does anyone have an idea about how to read in video streams from the ARDrone using OpenCV, the samples shows how to get video input from a webcam only the video is encoded in H.264 format,and the drone adds a proprietary header (called PaVE) to every video frame, apparently that's why Android fails to load the video stream.. thanks You need a PaVE parser that will strip the PaVE headers off the H.264 frames before you can decode them and feed them to OpenCV. There are some