h.264

I am getting the following errors when decoding H.264 frames received from the remote end of a H.264 based SIP video call. Appreciate any help in understanding there errors. non-existing PPS 0 referenced decode_slice_header error non-existing PPS 0 referenced decode_slice_header error no frame! non-existing PPS 0 referenced decode_slice_header error non-existing PPS 0 referenced decode_slice_header error no frame! That just means that ffmpeg has not seen a keyframe yet, which carries SPS and PPS information. SPS and PPS are crucial in decoding an incoming frame/slice. Keyframes are sent

Note bene: I realize this is an immensely complicated question with about a million levels of nuance that I'm trying to reduce to a single number... I'm about to undertake a large video encoding project using H.264 encoding. We are trying to create multiple bitrate profiles in order to accommodate streaming across internet connections, processors, devices, etc. Generally speaking, what kind of compression ratio should I be expecting to see (while staying within a reasonable level of quality)? For example, a 640x360 (16:9) pixel video file @ 24 frames per second and 16-bit color should yield an

I am using libX264 library for encoding purpose . After encoding data is in form of NAL Unit ()..... .This is same format( AVC) what I require but problem is one frame come in two Nal Unit ( One frame = (length,data) + (length,data) ) and i need ( One frame = (length,data) in single nal unit).While I am converting into file then play , it show first upper part of screen and then lower . My config parameter are below param.i_width = 1680//; param.i_height = 948; param.i_fps_num = some no; param.i_fps_den = 1; param.i_keyint_max = 1 ; param.rc.i_rc_method = //; param.rc.f_rf_constant = //; param

We're trying to parse the fragments of an fMP4 file into separate independent MP4s. Can anyone help point us in the right direction to do this, or is there any open source code that exists that we could leverage? I think MP4Box might be what you are looking for. It's open source, so you can have a look at the code if you want to know how this can be done. It can also be used as command line tools, e.g. as described in this blog post (skip to the "Segmenting" section): MP4Box -dash 4000 -rap -segment-name segment_ myInput.mp4 Use either the -segment-name or the -profile option to generate one

I have 2 servers, server2 can receive h.264 stream from server1. I need my iPad can play the h.264 stream, and my ipad and server2 are in the same local area network， but can not connect to server1, so I need server2 relay the h.264 stream to my ipad, who has one good solution ? thanks! Your question is rather vague. If you are playing via HLS then you could install an HTTP proxy on server2. Apache even has a proxy module which lets you make a URL on server1 appear as if it was hosted by server2 without having to configure your iPad to use server2 as its proxy. http://httpd.apache.org/docs/2.2

I am using FFmpeg to decoding H.264 video, for the following program: #include <stdlib.h> #include <stdio.h> #include <string.h> #include <signal.h> #include <sys/time.h> #include <time.h> #include <libavcodec/avcodec.h> #include <libavutil/mathematics.h> #include <SDL/SDL.h> void sigint_handler(int signal) { printf("\n"); exit(0); } const char *window_title; SDL_Surface *screen; SDL_Overlay *yuv_overlay; #define INBUF_SIZE 80000 /* * Video decoding example */ static long get_time_diff(struct timeval time_now) { struct timeval time_now2; gettimeofday(&time_now2,0); return time_now2.tv_sec*1.e6