I only try to upload the frame if got output returns 1 and clear the buffer once I am done encoding video frames. Because, we are using the yuv420p pixel format where the U and V planes are half the height and width of the Y plane. Note: It is known that this code has memory leaks because I am not freeing the memory that is dynamically allocated. If (avcodec_open2(context, codec, 0) format = context->pix_fmt Īvpicture_fill((AVPicture *) frame, rawPixelBase, context->pix_fmt, frame->width, frame->height) Īvcodec_encode_video2(context, &packet, frame, &got_output)ĬVPixelBufferUnlockBaseAddress(pixelBuffer, 0) a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.nStream mapping:n Stream 0:0 -> 0:0 (h264 (native) -> h264 (libx264))nPress q to stop, for helpnlibx264 000001cd5ac43100 width not divisible by 2. The posted code example seems to work as avcodec_encode_video2 returns 0 (Success) however got_output is also 0 ( AVPacket is empty).ĭoes anyone have any experience with encoding video on iOS devices that might know what I am doing wrong? - (void) captureOutput:(AVCaptureOutput *)captureOutputĭidOutputSampleBuffer:(CMSampleBufferRef)sampleBufferįromConnection:(AVCaptureConnection *)connection The most likely reason is either wrong type (e.g. I am trying to encode a single YUV420P image gathered from a CMSampleBuffer to an AVPacket so that I can send h264 video over the network with RTMP. How to use hevccuvid decoder to convert a yuvj420p format mov file into h264 mp4 Gaming and Visualization Technologies Visualization Video Processing & Optical Flow k302296 July 15, 2021, 3:03pm 1 solved : using cuda for hwaccel option I have a video.mov, codec hvc1, pix fmt yuvj420p. Stream 0:0: Video: h264 (Main), yuv420p (progressive), 352x192, 29.97 tbr, 90k tbn, 180k tbc But then i changed to a newer camera, which has these parameters: Stream 0:0: Video: h264 (High), yuvj420p (pc, bt709, progressive), 1280x720, 25 fps, 25 tbr, 90k tbn, 50 tbc My C++ program uses OpenCV3 to process the stream.
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