int ticks_per_frame; int delay; int width, height;// 视频宽高 int coded_width, coded_height; int gop_size; enum AVPixelFormat pix_fmt; void (*draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height); enum AVP...
av_frame_unref(frame); return ret; } } } } /* free the per-frame decode data */ av_buffer_unref(&frame->private_ref); return ret; } decode_simple_receive_frame static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame) { int ret; while (!frame->buf[0]) { /...
codec->time_base.num = ist->st->r_frame_rate.den; codec->time_base.den = 2*ist->st->r_frame_rate.num; codec->ticks_per_frame = 2; } else if ( copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base) ...
AVFrame官方解释是This structure describes decoded (raw) audio or video data,意思就是说这个是用来 存储解码的音视频数据(原始的音视频数据,就是YUV,PCM这些没有压缩过的,体积很大的数据) 的结构体。 AVStream官方解释是Stream structure,流结构体,就是之前从文件中取出来的那个文件流,也是音视频流,记录这些流...
[video_index]->codec->ticks_per_frame =2; s->streams[video_index]->codec->pix_fmt =0; s->streams[video_index]->pts_wrap_bits =32; s->streams[video_index]->time_base.den =1000; s->streams[video_index]->time_base.num =1; s->streams[video_index]->avg_frame_rate.den =90;...
codec->time_base.num = ist->st->r_frame_rate.den; codec->time_base.den =2*ist->st->r_frame_rate.num; codec->ticks_per_frame =2; }elseif( copy_tb<0&& av_q2d(icodec->time_base)*icodec->ticks_per_frame >2*av_q2d(ist->st->time_base)&& av_q2d(ist->st->time_base) ...
}if(avctx->ticks_per_frame ==1) {if(h->avctx->time_base.den < INT_MAX/2) { h->avctx->time_base.den *=2; }elseh->avctx->time_base.num /=2; } avctx->ticks_per_frame =2;//初始化extradataif(avctx->extradata_size >0&& avctx->extradata) { ...
av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame; duration_dts = ((int64_t)AV_TIME_BASE * ist->dec_ctx->framerate.den * ticks) / ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame; } if(ist->dts != AV_NOPTS_VALUE && duration_...
codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame, INT_MAX); if (pc && pc->repeat_pict) { av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case av_reduce(pnum, pden, ...
推一个RTSP摄像头的流数据时，一旦打开该摄像头的音频轨道就会在av_interleaved_write_frame()函数处出错...