CODEWITHSUNDEEP
htmlvideoffmpegwebcammedia-source
Kr0e
Kr0e

Reputation: 2239

FFMPEG: Create contiguous videos from webcam

Can FFMPEG record from webcam in (for instance 10 sec.) intervals ? I need contiguous small videos from webcam (used for a p2p live streaming app, which I'm developing), so that I can play them one after the after without noticing, that there are actually multiple videos.

I guess, I have to break on key-frames or something like this, so that I have clear cuts.

For playing multiple videos without stuttering I use the Web MediaSource API and it does actually work quite well already.

I only need to segment a webcam stream into multiple variable video files.

Thanks!

Upvotes: 1

Views: 1632

Answers (1)

aergistal
aergistal

Reputation: 31209

You can use the general purpose stream segmenter or the specific Apple HTTP Live Streaming (HLS) segmenter.

Example for the stream segmenter on Linux:

ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0 -an -f segment -segment_time 10 -segment_format_options movflags=+faststart out%03d.mp4

You can set a constant keyframe interval with the GOP size option (-g), ie:

-c:v libx264 -r 25 -g 50

puts a keyframe every 2s (50 frames at 25 fps). The segment duration must be a multiple of the keyframe interval.

Upvotes: 4

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