st->internal->info->codec_info_duration_fields/2 : st->internal->info->duration_count; if (!(st->r_frame_rate.num && st->avg_frame_rate.num) && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { if (count < fps_analyze_framecount) break; } // 如果存在帧延时,查看前3帧 if ...
avformat_find_stream_info()函数源码解析 我们从这两个循环开始: for(i=0;i<ic->nb_streams;i++){constAVCodec*codec;AVDictionary*thread_opt=NULL;st=ic->streams[i];avctx=st->internal->avctx;if(st->codecpar->codec_type==AVMEDIA_TYPE_VIDEO||st->codecpar->codec_type==AVMEDIA_TYPE_SUBTIT...
private void checkPermission() { if(ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){ Log.e("zuo","无权限,去申请权限"); ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, PERMISSION_RE...
Step 4: Check the converted video After a while, the video will be converted. Now it is done. Part 2: How to Use FFmpeg to Edit and Convert Videos on Mac Step 1: Install FFmpeg on Mac Compared on Windows, it is much easier to install FFmpeg on Mac. Go to Brew website. Select ...
Click the bottom inverted triangle button to set an output path. Finally, pressRunto initiate the converting process. Once done, a new window will prompt you to check the export file. WonderFox offers both free and paid versions to edit, convert, and download videos.HD Video Converter Factory...
◼ avformat_find_stream_info():获取音视频文件信息 ◼ av_read_frame(); 读取音视频包 ◼ avformat_seek_file(); 定位文件 ◼ av_seek_frame():定位文件 区分不同的码流 ◼ AVMEDIA_TYPE_VIDEO视频流 video_index = av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO, -1,-1, NULL, 0) ...
;}//设置回调,读取指令的返回值private void ProcessOutputHandler(object sendingProcess, DataReceivedEventArgs outLine){try{//进程间通信,解决线程中调用控件错误Control.CheckForIllegalCrossThreadCalls = false;if (!String.IsNullOrEmpty(outLine.Data)){info += outLine.Data + Environment.NewLine;}else{is...
第三列raw H.264 video是文件格式的详细说明, 表明是裸的h264视频, 也就是没有压缩过的h264. 2.1.1.1 ffmpeg -muxers 如果我们只想看复用格式, 可以使用ffmpeg -muxers, 输出如下所示: File formats: D. = Demuxing supported .E = Muxing supportedundefined E h264 raw H.264 video E flv FLV (...
FFmpeg 源代码简单分析:avformat_find_stream_info() FFmpeg 源代码简单分析:av_read_frame() FFmpeg 源代码简单分析:avcodec_decode_video2() FFmpeg 源代码简单分析:avformat_close_input() 【编码】 FFmpeg 源代码简单分析:avformat_alloc_output_context2() ...
-vstats_file file dump video coding statistics to file -dc precision intra_dc_precision -qphist show QP histogram -vc channel deprecated, use -channel -tvstd standard deprecated, use -standard -isync this option is deprecated and does nothing ...