Root cause: the concat list had no 'duration' entries, so all JPEG
frames collapsed to timestamp 0 and only one frame survived encoding.
Fix: add 'duration CAPTURE_INTERVAL' per entry in both scripts.
Also add fps=25 to the speed-adjust step so the VFR source is resampled
to a standard frame rate — without this, players see ~6fps and may drop
frames to reach the declared rate.
daily_sunrise_video.sh --test [MINUTES]:
Skips sunrise.py lookup and capture-window wait. Uses the last MINUTES
minutes of captured frames (default 2). Overlay shows the mid-point
frame's timestamp. Audio grabbed live from RTSP immediately.
Output: <date>-daily-sunrise-test.mp4 — no notifications or upload.
Usage: ./daily_sunrise_video.sh east --test 2
https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
- fontcolor: white → yellow (both scripts)
- y position: (h-th)/2 → h-th-18 (vertically centered → lower-right corner)
- test-sunrise.sh: reverted to reading last 60 frames from capture directory
(~10 minutes at 10s interval) instead of live RTSP capture
https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
Overlay fix (both scripts):
Switch from text='...\n...' to drawtext's textfile= option. Writing
each character on its own line eliminates the \n escape ambiguity in
ffmpeg's filter-string single-quote parser, which was causing 'n' to
appear literally instead of as a line break.
test-sunrise.sh redesign:
Now captures NUM_FRAMES fresh RTSP frames (120s at default interval)
at run time instead of reading pre-existing frames from the capture
directory. The RTSP URL must be set in .env — the script fails early
with a clear message if it is not.
https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
- Overlay text was showing characters run together (e.g. '1n2n') because
inside ffmpeg single-quoted filter text, \n is consumed as just 'n'.
Fix: use \\\\n in bash double-quotes which stores \\n in the variable,
which ffmpeg then parses as \n, which drawtext renders as a newline.
Applied to both test-sunrise.sh (MID_VERT) and daily_sunrise_video.sh
(SR_VERT, replacing the awk one-liner with the same bash approach).
- test-sunrise.sh concat list was missing per-frame duration entries,
causing 12 frames to encode as 0.48s (25fps default) and then slow
down instead of compress. Fixed by writing 'duration INTERVAL' per
frame so 12 frames × 10s = 120s raw → 12× compression to 10s.
- Removed 2>/dev/null from audio ffmpeg call in test-sunrise.sh so
capture failures are visible for diagnosis.
https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
Runs the same 4-step pipeline as daily_sunrise_video.sh but uses the
most recent ~2 minutes of captured frames instead of the sunrise window,
grabs live RTSP audio for the audio mix step, and accepts an arbitrary
output path — so it can be run at any time of day to verify the full
pipeline (speed-adjust, audio mix, vertical time overlay) without
waiting for tomorrow's sunrise.
https://claude.ai/code/session_01C4jbd3waXG3eKZYbGUjLUQ
Claude