视频强化人才支撑 补齐农村短板
百度 鉴于目前《中华人民共和国出境入境管理法》的实施细则尚未制定，关于“出国定居”的法定内涵尚不明确具体，因此，现阶段上海公安机关对出国定居人员不注销户口。
FFmpeg is a free software project that produces libraries and programs for handling multimedia data. The most notable parts of FFmpeg are libavcodec, an audio/video codec library used by several other projects, libavformat, an audio/video container mux and demux library, and the ffmpeg command line program for transcoding multimedia files.
720 questions with no upvoted or accepted answers
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How to produce a zoom animation of a video source with ffmpeg?
I'd like to create a zoom-in animation over numerous frames of a video clip. I've tried a couple of approaches without much luck.
ffmpeg -i test-10s.mp4 -vf "zoompan=z='zoom+0.001'" zoompan-10s.mp4
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Merge Insta360 INSV files into 360 video with ffmpeg 360vr filter
Insta produces 2 video files, from back and front camera. They have .INSV extenstion, but they are acutally mp4 video files. That's how they look:
And expected result is 360 panorama video:
Can I use ...
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6
votes
1
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Largest input image size when encoding a video?
I got a bunch of really large 16 bit videos, approaching 65535×65535 pixels in size. These are essentially high quality timelapse panoramas. I want to convert them to a 7680×4320 movie (8K UHD, 8 bit)....
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Optimized Parameters of `FFMPEG` for Screen Recording
Windows has a great codec for screen recording called Windows Media Video Screen.
It generates artifacts free videos which are highly compressed (small size).
I was wondering, what would be the ...
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5
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Extract the frame (in image format) at exactly every minute (or second) from a video (by ffmpeg)
Motivation: I would like to seek the frame, then take high quality and exact time screenshots (images) from a video.
The video is length is 00:48:43.71 and 23.98 fps (we can think it is 24 fps, isn't ...
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4
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How can I change the sample rate of an audio file, without re-encoding?
I have a lossy AAC audio file. I would like it to be slightly faster, and slightly higher pitched. I would like to avoid loosing any audio quality, such as by re-encoding the stream.
I am well aware ...
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4
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moov atom not found
I downloaded this video using youtube-dl's HLS downloader. The video was being HLS streamed using AES-128. Even though I could view it perfectly fine when it was being streamed in the browser, VLC ...
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Getting FFMPEG to stream video+audio through RTMP
Can someone help me with this:
The video streams fine but I can't hear any audio. I just hear random click sounds. Please help:
ffmpeg -f video4linux2 -channel 1 -i /dev/video0 -f alsa -i plughw:2,0
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4
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0
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FFmpeg map_channel and video
I have a file that has the following format (note the number of tracks and channels within each track):
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a.mov':
Metadata:
major_brand : qt
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4
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2
answers
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How to find/detect the real video resolution?
Imagine you have recorded/captured the screen at 1080p, but it was displaying a 480p video maximized to fullscreen.
The result file is technically 1080p, but it really is showing a 480p video, that is ...
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3
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735
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Audio out of sync when import file cut by ffmpeg with -c copy
I have a lot of clips made with ffmpeg using this command:
ffmpeg.exe -ss XX:XX -t XX:XX -i original.mp4 -c copy clip.mp4.
That copy option gives a couple seconds of silence in a result clip, but ...
3
votes
0
answers
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How do I compress a video and preserve quality in moving areas?
It's easier to notice details in still objects compared to moving ones, so modern codecs save bandwidth by reducing detail during movement. However, this optimization seems far too pronounced to me ...
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3
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Chrome renders WebM Video "darker" than other browsers / media players
Not sure if this is the correct community, but I have a question about video encoding and decoding.
I have a video that gets served in MP4 or WebM formats, depending on browser support. I noticed ...
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3
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How to use ffmpeg to send video stream to another server that gives exactly same quality as manually copying the file to that server?
I tried doing this
ffmpeg -i tcp://192.168.1.41:5000?listen -c copy out.avi
and have another client publish to this server using
ffmpeg -i 1.avi -map 0 -c copy -f mjpeg tcp://192.168.1.41:5000
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3
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FFMPEG Filter_Complex_Script crop by time
I am trying to use FFMPEG's filter_complex_script option to crop a video in different places depending on the time. I have a file that shows the bounding box of where an object should be and have ...
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