first round of trying to get it to work on pi5. ffmpeg hardcoding removed.
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1
Pipfile
1
Pipfile
@ -6,6 +6,7 @@ name = "pypi"
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[packages]
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opencv-python = "*"
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wakepy = "*"
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numpy = "*"
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[dev-packages]
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14
Pipfile.lock
generated
14
Pipfile.lock
generated
@ -1,7 +1,7 @@
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{
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"_meta": {
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"hash": {
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"sha256": "943975627c31fb661a3a1e3a77e80b2e5634baf439d615ccba41a14d7edf09b1"
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"sha256": "7b5a783544ab25fe0461f649a9e204e85f0fae1e9864e057c5ce075d5cb63eca"
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},
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"pipfile-spec": 6,
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"requires": {
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@ -16,6 +16,14 @@
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]
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},
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"default": {
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"jeepney": {
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"hashes": [
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"sha256:5efe48d255973902f6badc3ce55e2aa6c5c3b3bc642059ef3a91247bcfcc5806",
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"sha256:c0a454ad016ca575060802ee4d590dd912e35c122fa04e70306de3d076cce755"
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],
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"markers": "sys_platform == 'linux'",
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"version": "==0.8.0"
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},
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"numpy": {
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"hashes": [
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"sha256:08458fbf403bff5e2b45f08eda195d4b0c9b35682311da5a5a0a0925b11b9bd8",
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@ -64,7 +72,7 @@
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"sha256:f1659887361a7151f89e79b276ed8dff3d75877df906328f14d8bb40bb4f5101",
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"sha256:f9cf5ea551aec449206954b075db819f52adc1638d46a6738253a712d553c7b4"
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],
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"markers": "python_version >= '3.10'",
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"index": "pypi",
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"version": "==2.0.1"
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},
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"opencv-python": {
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@ -78,7 +86,6 @@
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"sha256:fc182f8f4cda51b45f01c64e4cbedfc2f00aff799debebc305d8d0210c43f251"
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],
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"index": "pypi",
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"markers": "python_version >= '3.6'",
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"version": "==4.10.0.84"
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},
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"wakepy": {
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@ -87,7 +94,6 @@
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"sha256:fee0722b554a859724f6f47ec28db1d513f15097f235b09ebb1b58f545f90db2"
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],
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"index": "pypi",
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"markers": "python_version >= '3.7'",
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"version": "==0.9.1"
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}
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},
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10
readme.md
10
readme.md
@ -4,4 +4,12 @@ this progrram opens a fullscreen window showing a feed from camera 0 with a dela
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it will collect a lot of video files in the videos/ folder, and use them for showing a long (multiple minutes) delay
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it also holds ontoo a buffer of a couple hundred frames to show shorter delays (like 5 oor 30 seconds)
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it doesn't currently do anything to handle missing files, but it would be nice to give it a "default" swirly portal looking video to show
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hopefully this'll run on a raspberry pi in the desert.
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hopefully this'll run on a raspberry pi in the desert.
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sudo apt install libfdk-aac2 libfdk-aac-dev python3-opencv
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sudo apt install obs-studio # optional for testing?
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sudo apt install python3-pipenv
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pipenv lock # ?
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pipenv install
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pipenv run python3 webcam.py
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99
webcam.py
99
webcam.py
@ -12,15 +12,13 @@ def five_minute_segment_from(the_time):
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def path_to_video_at(time_stamp):
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return 'videos/' + str(time_stamp) + '.mkv' # mkv required for h264 encoding
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os.environ["OPENCV_FFMPEG_CAPTURE_OPTIONS"]="hwaccel;vaapi;hw_decoders_any;vaapi,vdpau" # maybe this enables hardware accelerated ffmpeg?
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#delay for long delay
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long_delay = timedelta(minutes=1)
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last_time_stamp = five_minute_segment_from(datetime.now())
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# live webcam feed
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camera = cv2.VideoCapture(0, cv2.CAP_FFMPEG)
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camera = cv2.VideoCapture(0)
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if not camera.isOpened():
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print("Cannot open camera")
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exit()
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@ -35,7 +33,7 @@ video_writer = cv2.VideoWriter(path_to_video_at(last_time_stamp),
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)
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# video feed from previously captured video
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old_time = cv2.VideoCapture(path_to_video_at(last_time_stamp), cv2.CAP_FFMPEG)
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old_time = cv2.VideoCapture(path_to_video_at(last_time_stamp))
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# fullscreen window yess good
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cv2.namedWindow("mirror", cv2.WINDOW_NORMAL)
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@ -46,65 +44,66 @@ idx = 0 # current index into the frame queue
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short_term_delay_frames = 20 # hoow many frames back are we going in the buffer when we're on a short term delay?
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longterm = False # are we shoowing a long term delay? (versus a sshort term delay)
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with keep.presenting():
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while(True):
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if last_time_stamp != five_minute_segment_from(datetime.now()):
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# find file older than our long delay
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old_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay - timedelta(minutes=1)))
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if os.path.isfile(old_file):
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print(f"deleting old file {old_file}")
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os.remove(old_file)
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#with keep.presenting():
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while(True):
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if last_time_stamp != five_minute_segment_from(datetime.now()):
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# find file older than our long delay
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old_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay - timedelta(minutes=1)))
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if os.path.isfile(old_file):
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print(f"deleting old file {old_file}")
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os.remove(old_file)
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video_writer.release()
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newly_recording_file = path_to_video_at(five_minute_segment_from(datetime.now()))
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print(f"opening {newly_recording_file} too record this upcoming ssegment to")
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video_writer = cv2.VideoWriter(newly_recording_file,
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fourcc,
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camera.get(cv2.CAP_PROP_FPS),
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(int(camera.get(3)), int(camera.get(4))),
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(cv2.VIDEOWRITER_PROP_HW_ACCELERATION, cv2.VIDEO_ACCELERATION_ANY)
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)
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video_writer.release()
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newly_recording_file = path_to_video_at(five_minute_segment_from(datetime.now()))
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print(f"opening {newly_recording_file} too record this upcoming ssegment to")
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video_writer = cv2.VideoWriter(newly_recording_file,
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fourcc,
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camera.get(cv2.CAP_PROP_FPS),
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(int(camera.get(3)), int(camera.get(4))),
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(cv2.VIDEOWRITER_PROP_HW_ACCELERATION, cv2.VIDEO_ACCELERATION_ANY)
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)
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if old_time.isOpened():
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old_time.release()
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if old_time.isOpened():
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old_time.release()
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new_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay))
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print(f"opening the previously recorded file {new_file} to read from for long mirror")
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old_time = cv2.VideoCapture(new_file, cv2.CAP_FFMPEG)
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new_file = path_to_video_at(five_minute_segment_from(datetime.now() - long_delay))
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print(f"opening the previously recorded file {new_file} to read from for long mirror")
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old_time = cv2.VideoCapture(new_file, cv2.CAP_FFMPEG)
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last_time_stamp = five_minute_segment_from(datetime.now())
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last_time_stamp = five_minute_segment_from(datetime.now())
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ret, frame = camera.read()
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frame = cv2.flip(frame, 1)
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ret, frame = camera.read()
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frame = cv2.flip(frame, 1)
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# record the frame to the appropriate file, and also to the short term buffer
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video_writer.write(frame)
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queue[idx] = ret, frame
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# record the frame to the appropriate file, and also to the short term buffer
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video_writer.write(frame)
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queue[idx] = ret, frame
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prev_frame_valid, prev_frame = queue[(idx - short_term_delay_frames) % len(queue)]
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old_frame_valid, old_frame = old_time.read()
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if not longterm and prev_frame_valid:
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cv2.imshow('mirror', prev_frame)
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elif longterm and old_frame_valid:
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cv2.imshow('mirror', old_frame)
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prev_frame_valid, prev_frame = queue[(idx - short_term_delay_frames) % len(queue)]
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old_frame_valid, old_frame = old_time.read()
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if not longterm and prev_frame_valid:
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cv2.imshow('mirror', prev_frame)
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elif longterm and old_frame_valid:
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cv2.imshow('mirror', old_frame)
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key = cv2.waitKey(16) # listen for keyprress for 16 ms
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if key & 0xFF == ord('q') or key == 27: # q or esc
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break
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if key & 0xFF == ord('a'):
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short_term_delay_frames += 1
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if key & 0xFF == ord('d'):
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short_term_delay_frames -= 1
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if key & 0xFF == ord('z'):
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longterm = not longterm
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key = cv2.waitKey(16) # listen for keyprress for 16 ms
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if key & 0xFF == ord('q') or key == 27: # q or esc
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break
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if key & 0xFF == ord('a'):
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short_term_delay_frames += 1
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if key & 0xFF == ord('d'):
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short_term_delay_frames -= 1
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if key & 0xFF == ord('z'):
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longterm = not longterm
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idx = (idx + 1) % len(queue)
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idx = (idx + 1) % len(queue)
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# After the loop release the cap object
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camera.release()
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out.release()
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old_time.release()
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video_writer.release()
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# Destroy all the windows
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cv2.destroyAllWindows()
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