avformat_open_input默认是阻塞操作,如果不加控制,等待时间可能会达到30s以上,对于有些情况,等待30s的体验是无法接受的。 ffmpeg支持interrupt_callback机制,可以对输入(或输出)的AVFormatContext的interrupt_callback成员设置 回调函数 配置参数 html 初始化 等待时间 FFMPEG avformat_open_input FFMPEG avformat_open_inp...
所以TCP_NODELAY可用来将此算法关闭。应用程序编写者只有在确切了解它的效果并确实需要的情况下,才设置TCP_NODELAY选项,因为设置后对网络性能有明显的负面影响。TCP_NODELAY是唯一使用IPPROTO_TCP层的选项,其他所有选项都使用SOL_SOCKET层。 如果设置了SO_DEBUG选项,WINDOWS套接口供应商被鼓励(但不是必需)提供输出相应的...
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在testProgs文件夹执行可执行文件:openRTSP rtsp://admin:admin@192.168.0.64,以下是显示打开rtsp流的请求与回复消息报文: 方法URI RTSP版本 CR LF 消息头 CR LF CR LF 消息体 CR LF 1. 2. 3. Created new TCP socket 3 for connection Connecting to 192.168.0.64, port 554 on socket 3... ...
avformat_open_input 打开输入文件,并读取文件头相关信息 avformat_find_stream_info 读取媒体文件信息。 av_find_best_stream 获取视频流序号(因为文件当中可能既有音频也有视频,字幕等流,我们这里使用这个函数获取视频流的序号)。 avcodec_find_decoder 获取解码器 ...
* * Demuxing only, set by avformat_open_input(). */ ff_const59 struct AVInputFormat *iformat; /** * The output container format. * * Muxing only, must be set by the caller before avformat_write_header(). */ ff_const59 struct AVOutputFormat *oformat; /** * Format private da...
* * Since the format of the opened file is in general not known until after * avformat_open_input() has returned, it is not possible to set demuxer private * options on a preallocated context. Instead, the options should be passed to * avformat_open_input() wrapped in an AVDicti...
108 */ 109 int64_t bit_rate; 110 111 unsigned int packet_size; 112 int max_delay; 113 114 /** 115 * 用于修改编(解)码器行为的标志,由AVFMT_FLAG_*集合构成,需要用户在调用avformat_open_input()或avformat_write_header()之前进行设置 116 */ 117 int flags; 118 #define AVFMT_FLAG_* 0x*...
uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE]; uint8_t* data; size_t data_size; AVPacket* pkt; AVFrame* decoded_frame = NULL; //if (argc <= 2) { // fprintf(stderr, "Usage: %s <input file> <output file>\n", argv[0]); ...