Updates to video_capture program #498
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The path to the directory is accepted as the first command line argument of the program. The program checks whether the directory exists and if not creates it.
Each frame is given a sequence number starting from 1. To make testing easy, reduced the frame rate.
Time stamps are in UTC. Format: sequence#_yyyy-mm-dd_hh-mm-ss.milsec.png
Appended the number of milliseconds between each frame and the previous frame (gap) to the end of the file name. Format: sequence#_yyyy-mm-dd_hh-mm-ss.milsec~gap.png One problem I see is that the gaps are not uniform. I am not sure how to fix this.
The amount of time taken to capture a frame is computed and it is subtracted from the frame period to adjust the time to wait till the start of capturing the next frame. Quick tests show that the variability is mostly kept below 10 milliseconds.
Studied the date.h header and figured out how to directly format the date and time avoiding latter string replacement operations.
However, in my testing, I felt that it is not working as expected.
…w to find opencv4. Made small improvements in the code to avoid crashing.
…specific instructions
paulosaurusrex
approved these changes
Apr 2, 2023
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It all looks great. @adarshp can we hold this for a while before merging until I get the uber script updated for tomorrow?
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@paulosoaresua - sure thing, we can hold off for now and you can merge it whenever you are ready. |
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This PR implements the following updates to the video_capture program.
--out_dirargument can now have tildes (thanks @manujinda !)--helpoption to actually work properly (it was throwing an exception earlier).