This may be useful, if you are trying to determine why a camera is failing to connect properly to ffmpeg. ffmpeg is always jumping around where the end is of the file, soĭon't be surprised if your extract starts earlier or later than you thought. NOTE: This doesn't always work as you expect it. If you don't specify the -t option it will go to the end. The timestamps need to be in HH:MM:SS.xxx format or in seconds. Use the -ss option to specify the starting timestamp, and the -t option to specify the encoding duration, eg from 3 minutes and 5 seconds in for 45 seconds:įfmpeg -i sample.avi -ss 00:03:05 -t 00:00:45.0 -q:a 0 -map a sample.mp3 (Reference: Extract Portion of Video/Audio Note that special characters and spaces can be troublesome. Use ffmpeg to concatenate all jpg images in an event export to MP4 (=> mylist.txt doneįfmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4 c:v libx264 -preset ultrafast Examples Joining Jpegs If you want as fast as possible h264(with some sacrifice in quality) you can try To obtain a good quality export x264 based mp4 video file - the following example works. You can control the options that get passed to ffmpeg during the export process using 2 config options found in the Images tab of the options dialog. Exporting video is done using the script. Note that this provides hardware support for exporting, but not necessarily for recording videos (see above paragraphs).įfmpeg is used in exporting events to downloadable video files. It is recommended to obtain it from the official RPI repos. The RPI has its own build of FFMPEG which includes support for the omx and mmal hardware peripherals. It will also record the stream to output.mp4. If successful it will output the encoding of the stream and the resolution.

This can be done from the terminal, and does not require X. Note that output.mp4 is the output file, not the -i input stream. Using FFMPEG Testing a Stream Path with FFMPEG Aside from that you have the option of compiling from source, or downloading a binary, which are linked from the main ffmpeg website. You should first check your distribution's package manager.

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