使用ffmpeg封装ts流的问题
各位好，我的问题是这样的。我有一个 h264编码的ES流视频文件,我想用ffmpeg来把视频文件封装成TS流。代码如下(部分代码来自网上，谢谢共享这份代码的网友)
#include "stdafx.h"#include <stdlib.h>#include <stdio.h>#include <string.h>#include <math.h>#ifdef __cplusplusextern "C"{#endif#include "libavformat\avformat.h"#include "libavcodec\avcodec.h"#include "libavutil\avutil.h"#include "libavutil\rational.h"#include "libavdevice\avdevice.h"#include "libavutil/mathematics.h"#include "libswscale/swscale.h"#ifdef __cplusplus}#endif //__cplusplusstatic AVStream* add_output_stream(AVFormatContext* output_format_context, AVStream* input_stream){ AVCodecContext* input_codec_context = NULL; AVCodecContext* output_codec_context = NULL; AVStream* output_stream = NULL; output_stream = av_new_stream(output_format_context, 0); if (!output_stream) { printf("Call av_new_stream function failed\n"); return NULL; } input_codec_context = input_stream->codec; output_codec_context = output_stream->codec; output_codec_context->codec_id = input_codec_context->codec_id; output_codec_context->codec_type = input_codec_context->codec_type; output_codec_context->codec_tag = input_codec_context->codec_tag; output_codec_context->bit_rate = input_codec_context->bit_rate; output_codec_context->extradata = input_codec_context->extradata; output_codec_context->extradata_size = input_codec_context->extradata_size; if (av_q2d(input_codec_context->time_base) * input_codec_context->ticks_per_frame > av_q2d(input_stream->time_base) && av_q2d(input_stream->time_base) < 1.0 / 1000) { output_codec_context->time_base = input_codec_context->time_base; output_codec_context->time_base.num *= input_codec_context->ticks_per_frame; } else { output_codec_context->time_base = input_stream->time_base; } switch (input_codec_context->codec_type) { case AVMEDIA_TYPE_AUDIO: output_codec_context->channel_layout = input_codec_context->channel_layout; output_codec_context->sample_rate = input_codec_context->sample_rate; output_codec_context->channels = input_codec_context->channels; output_codec_context->frame_size = input_codec_context->frame_size; if ((input_codec_context->block_align == 1 && input_codec_context->codec_id == CODEC_ID_MP3) || input_codec_context->codec_id == CODEC_ID_AC3) { output_codec_context->block_align = 0; } else { output_codec_context->block_align = input_codec_context->block_align; } break; case AVMEDIA_TYPE_VIDEO: output_codec_context->pix_fmt = input_codec_context->pix_fmt; output_codec_context->width = input_codec_context->width; output_codec_context->height = input_codec_context->height; output_codec_context->has_b_frames = input_codec_context->has_b_frames; if (output_format_context->oformat->flags & AVFMT_GLOBALHEADER) { output_codec_context->flags |= CODEC_FLAG_GLOBAL_HEADER; } break; default: break; } return output_stream;}int _tmain(int argc, _TCHAR* argv[]){ const char* input = "F:\\VideoPlayer\\debug\\StreamTotal.h264"; const char* output_prefix = NULL; char* segment_duration_check = 0; const char* index = NULL; char* tmp_index = NULL; const char* http_prefix = NULL; long max_tsfiles = NULL; double prev_segment_time = 0; double segment_duration = 0; AVInputFormat* ifmt = NULL; AVOutputFormat* ofmt = NULL; AVFormatContext* ic = NULL; AVFormatContext* oc = NULL; AVStream* video_st = NULL; AVStream* audio_st = NULL; AVCodec* codec = NULL; AVDictionary* pAVDictionary = NULL; av_register_all(); char szError[256] = {0}; int nRet = avformat_open_input(&ic, input, ifmt, &pAVDictionary); if (nRet != 0) { av_strerror(nRet, szError, 256); printf(szError); printf("\n"); printf("Call avformat_open_input function failed!\n"); return 0; } if (av_find_stream_info(ic) < 0) { printf("Call av_find_stream_info function failed!\n"); return 0; } ofmt = av_guess_format("mpegts", NULL, NULL); if (!ofmt) { printf("Call av_guess_format function failed!\n"); return 0; } oc = avformat_alloc_context(); if (!oc) { printf("Call av_guess_format function failed!\n"); return 0; } oc->oformat = ofmt; int video_index = -1, audio_index = -1; for (unsigned int i = 0; i < ic->nb_streams && (video_index < 0 || audio_index < 0); i++) { switch (ic->streams[i]->codec->codec_type) { case AVMEDIA_TYPE_VIDEO: video_index = i; ic->streams[i]->discard = AVDISCARD_NONE; video_st = add_output_stream(oc, ic->streams[i]); break; case AVMEDIA_TYPE_AUDIO: audio_index = i; ic->streams[i]->discard = AVDISCARD_NONE; audio_st = add_output_stream(oc, ic->streams[i]); break; default: ic->streams[i]->discard = AVDISCARD_ALL; break; } } codec = avcodec_find_decoder(video_st->codec->codec_id); if (codec == NULL) { printf("Call avcodec_find_decoder function failed!\n"); return 0; } if (avcodec_open(video_st->codec, codec) < 0) { printf("Call avcodec_open function failed !\n"); return 0; } if (avio_open(&oc->pb, "F:\\VideoPlayer\\debug\\264.ts", AVIO_FLAG_WRITE) < 0) { return 0; } if (avformat_write_header(oc, &pAVDictionary)) { printf("Call avformat_write_header function failed.\n"); return 0; } int decode_done = 0; do { double segment_time = 0; AVPacket packet; decode_done = av_read_frame(ic, &packet); if (decode_done < 0) break; if (av_dup_packet(&packet) < 0) { printf("Call av_dup_packet function failed\n"); av_free_packet(&packet); break; } if (packet.stream_index == video_index && (packet.flags & AV_PKT_FLAG_KEY)) { segment_time = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den; } else if (packet.stream_index == audio_index) { segment_time = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den; } else { segment_time = prev_segment_time; } nRet = av_interleaved_write_frame(oc, &packet); if (nRet < 0) { printf("Call av_interleaved_write_frame function failed\n"); } else if (nRet > 0) { printf("End of stream requested\n"); av_free_packet(&packet); break; } av_free_packet(&packet); }while(!decode_done); av_write_trailer(oc); av_bitstream_filter_close(bsfc); avcodec_close(video_st->codec); for(unsigned int k = 0; k < oc->nb_streams; k++) { av_freep(&oc->streams[k]->codec); av_freep(&oc->streams[k]); } av_free(oc); getchar(); return 0;}