Epoch start time for Orcasound recording from MaST Center Aquarium:
1699169418

Equivalent date-time:
GMT: Sunday, November 5, 2023 7:30:18 AM
Your time zone: Sunday, November 5, 2023 12:30:18 AM GMT-07:00 DST

MP3 file retrieved by Scott Veirs for Amy Carey on 11/8/23 via AWS S3 bucket HLS segments transcoded to MP4 and then MP3 format via the appended ts2mp3.sh script. The resulting output.mp3 file was renamed to 231105-MC-J.mp3 manually.


# ts2mp3.sh expects two arguments:
#1 node name (one string with underscores, e.g. bush_point (NOTE: no leading rpi_ !)
#2 UNIX timestamp of desired S3 folder within the nodes hls folder
#3 Start time in hours after the UNIX timestamp
#4 Stop time in hours after the UNIX timestamp

# Add some logic to skip data that isn't between the desired start and stop times
# i.e. within aws sync call or in the for loop (delete some .ts segments; rename others)

echo "You provided $# arguments: $1, $2, $3, and $4"
aws s3 sync s3://streaming-orcasound-net/rpi_$1/hls/$2/ .
for file in live*; do mv "$file" "${file#live}"; done;
for i in *.ts ; do
    mv $i `printf '%04d' ${i%.ts}`.ts
done
printf "file '%s'\n" ./*.ts > mylist.txt
ffmpeg -f concat -safe 0 -i mylist.txt -c copy all.ts
ffmpeg -i all.ts -c:v libx264 -c:a copy -bsf:a aac_adtstoasc output.mp4
ffmpeg -i output.mp4 output.mp3
rm *.ts output.mp4 mylist.txt