[FFmpeg-user] Performance Tuning for Raspberry Pi
bruce.diesel at gmail.com
Wed Oct 17 13:16:05 EEST 2018
Please forgive my somewhat basic question, but my searching has not yielded
much information that I can easily understand as I don't have much
knowledge in this space.
I am building a dash cam type application using a Raspberry Pi Zero, some
sensors, and a Pi Camera. I am burning data from the sensors onto video
using drawtext from a memory file that a separate python program is
continuously updating atomically.
I am really struggling to get reasonable performance. I get around 6
frames/second at HD quality. I am not running X Windows, and not
displaying the video, just capturing it.
Using an ffmpeg command line such as: ffmpeg -i /dev/video0 -vf
Inside the drawtext I am setting the font, centering the text and giving it
the filename to read.
I have very limited understanding of the pros/cons of different codecs etc
so I am looking for a source of information that can help me through this
without me having to become an expert in the subject.
Once thing I can do is stream to a memory file, but that introduces
complexities like file management, memory limitations etc.
Any pointers to a good source of information on this would be most
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