1. 11月5日下午4点开始,内存使用率逐步上升,说明那段时间测试了视频,线程一直处于堵塞状态; 2. 查看了一下dump文件(jmap -dump:live,format=b,file=heap.dmp PID),发现有很多线程在extractVideoFirstFrame方法时阻塞; 3. 11月6日10点半左右,重启了一下应用,内存立马就下来了,可以断定,这就是因为内存使用率上
...scale = Scale the input video ..S.EA... = Extract an audio stream from the input video ..S.E...V = Extract a video stream from the input 滤镜列表可以帮助你了解 FFmpeg 中可用的滤镜功能并选择适合你需求的滤镜来处理音频、视频或图像。你可以使用这些滤镜来构建自定义的媒体处理流程。 滤镜...
chomp evc_frame_merge hapqa_extract mjpega_dump_header null setts vp9_superframe dca_core extract_extradata hevc_metadata mov2textsub opus_metadata text2movsub vp9_superframe_split Enabled indevs: alsa fbdev lavfi oss v4l2 xcbgrab Enabled outdevs: alsa fbdev oss v4l2 License: LGPL version 2.1...
st->internal->extract_extradata.inited || st->internal->extract_extradata.bsf) && extract_extradata_check(st)) break; if (st->first_dts == AV_NOPTS_VALUE && !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) && st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PI...
(src_length > 60) src_length = 60; } else { if (src_length > 1000) src_length = 1000; } break; } // 抽取rbsp序列 consumed = ff_h2645_extract_rbsp(buf + buf_index, src_length, &rbsp, &nal, 1); if (consumed < 0) break; buf_index += consumed; ret = init_get_bits8(...
1. AVFrame*pFrame; 2. double; 3. 4. pFrame =(); 5. 6. for(;;){ 7. if(packet_queue_get(&is->videoq,,1)<0){ 8. // Means we quit getting packets. 9. break; 10. } 11. =0; 12. 13. // Save global pts to be stored in pFrame in first call. ...
Printf("audio_frame n:%d nb_samples:%d pts:%s\n", audio_frame_count, frame.NbSamples, libavutil.AvTs2timestr(frame.Pts, &audio_dec_ctx.TimeBase)) audio_frame_count++ /* Write the raw audio data samples of the first plane. This works * fine for packed formats (e.g. AV_SAMPLE_...
* number of slices in the frame */ s->nb_nals = 0; while (length >= 4) { HEVCNAL *nal; int extract_length = 0; if (s->is_nalff) { int i; for (i = 0; i < s->nal_length_size; i++) extract_length = (extract_length << 8) | buf[i]; ...
From each stream we can extract pieces (slices) of data called packets that will be loaded into components named AVPacket.The data inside the packets are still coded (compressed) and in order to decode the packets, we need to pass them to a specific AVCodec....
$frame = $video->frame(FFMpeg\Coordinate\TimeCode::fromSeconds(42)); $frame->save('image.jpg');If you want to extract multiple images from the video, you can use the following filter:$video ->filters() ->extractMultipleFrames(FFMpeg\Filters\Video\ExtractMultipleFramesFilter::FRAMERATE_EVERY...