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...
...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...
r_frame_rate/framerate/avg_frame_rate:帧率相关。 codec:指向该流对应的AVCodecContext结构,调用avformat_open_input时生成。 parser:指向该流对应的AVCodecParserContext结构,调用avformat_find_stream_info时生成。。 AVFormatContext 这个结构体描述了一个媒体文件或媒体流的构成和基本信息,定义如下: typedef struct...
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]; ...
(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(...
an image pattern (eg./path/to/frame%03d.png); a readable stream; only one input stream may be used for a command, but you can use both an input stream and one or several file names. // Note that all fluent-ffmpeg methods are chainableffmpeg('/path/to/input1.avi').input('/path/...
$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...