prabindh

#include <libavutil/timestamp.h>
#include <libavformat/avformat.h>

static FILE *open_file_write(const char *file);
static FILE *open_file_read(const char *file);
static size_t write_packt_to_file(AVPacket *packet, FILE *file);
static size_t read_packt_from_file(AVPacket *packet, FILE *file);
static void close_file(FILE *file);

static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, const char *tag)