I believe if you set the following, you will see video playback. packet.flags |= AV_PKT_FLAG_KEY; packet.pts = packet.dts = 0; You should really set packet.flags according to the h264 packet headers. You might try this fellow stack overflowian’s suggestion for extracting directly from the stream. If you are also adding audio, then pts/dts is going … Read more
I think you’re seeing some effects unique to the first frame. I repeated your experiment, with the further addition of forcing doRender = false around line 244 to avoid the sleep calls used to manage the output frame rate. I see: 01-29 14:05:36.552 9115 9224 I Grafika : queueInputBuffer index/pts, 2,0 01-29 14:05:36.562 9115 9224 … Read more
I am going to add a late answer to this one after spending all day trying to figure out how to get YUV 4:4:4 pixels into x264. While x264 does accept raw 4:2:0 pixels in a file, it is really quite difficult getting 4:4:4 pixels passed in. With recent versions of ffmpeg, the following works … Read more
For your fast playback – frame rate issue, there is nothing you have to do here. Since it is a streaming solution the other side has to be told the frame rate in advance or timestamps with each frame. Both of these are not part of elementary stream. Either pre-determined framerate is chosen or you … Read more
You have two options: use ffmpeg api – google ffmpeg sample code. this requires good understanding of the api and which is very comprehnsive. compile ffmpeg.c and invoke its main() via jni. This requires that you understand the command line parameters. It is rather cumbersome but works. You need to look out for the static … Read more
NO!!! You must run a complex function to extract video dimensions from Sequence Parameter Sets. How to do this? Well first you must write your own Exp-Golomb decoder, or find one online… in live555 source code somewhere there is one for example… Then you must get one SPS frame. It has NAL=0x67 (NAL is the … Read more
I solved it by swapping the byteplanes myself on Android level, using a simple function: public byte[] swapYV12toI420(byte[] yv12bytes, int width, int height) { byte[] i420bytes = new byte[yv12bytes.length]; for (int i = 0; i < width*height; i++) i420bytes[i] = yv12bytes[i]; for (int i = width*height; i < width*height + (width/2*height/2); i++) i420bytes[i] = yv12bytes[i … Read more
First of all: check the x264.h file, it contains more or less the reference for each function and structure. The x264.c file you can find in the download contains a sample implementation. Most people say to base yourself on that one, but I find it rather complex for beginners, it is good as an example … Read more
Peace of cake! 1. Get the data As I can see, you already know how to do that (start RTSP session, SETUP a RTP/AVP/UDP;unicast; transport, and get user datagrams)… but if you are in doubt, ask. No matter the transport (UDP or TCP) the data format is mainly the same: RTP data: [RTP Header – … Read more
Concepts: NALUs: NALUs are simply a chunk of data of varying length that has a NALU start code header 0x00 00 00 01 YY where the first 5 bits of YY tells you what type of NALU this is and therefore what type of data follows the header. (Since you only need the first 5 … Read more