Utils

ffmpeg.sh

# Download from: https://www.ffmpeg.org/download.html
# Install ffmpeg and ffprobe in yout PATH

# Convert all mp4 in the folder to mkv

find ./ -name '*.mp4' -exec bash -c 'ffmpeg -i $0 -c copy ${0/mp4/mkv}' {} \;

# Save the first minute of a video

ffmpeg -v error -stats -ss 00:00:00 -i path/to/input.mkv -to 00:01:00 -codec copy -avoid_negative_ts make_zero path/to/output.mkv

# Read duration of a video with ffmpeg

ffmpeg -i path/to/video.mkv 2>&1 | grep Duration | awk '{print $2}' | tr -d ,

# Read duration of a video with ffprobe
## Output in seconds
ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 path/to/video

## Output in HOURS:MM:SS.MICROSECONDS
ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 -sexagesimal path/to/video

# Covert flac to mp3
find . -name "*.flac" -exec bash -c 'ffmpeg -i "$0" -ab 192k -map_metadata 0 -id3v2_version 3 "${0/flac/mp3}"' {} \;

mongodb.sh

# Dump all collections
ump --host localhost --port 27017 --out /path/to/output -d database_name -u root -p password --authenticationDatabase "admin"

# Restore collection from file
mongorestore --host localhost --port 27017 --db database_name --collection collection_name -u root -p password --authenticationDatabase "admin" /path/to/input.bson

# Import Data in MongoAtlas (AWS Role Access)

USER="AWS_ACCESS_KEY_ID"
PASS="AWS_SECRET_ACCESS_KEY"
TOKEN="AWS_SESSION_TOKEN"
URI="cluster_endpoint/database_name"
COLLECTION="collection_name"
JSON_PATH="/path/to/input.json"

mongoimport \
  --uri "mongodb+srv://$USER:$PASS@$URI?authMechanism=MONGODB-AWS&authSource=%24external&authMechanismProperties=AWS_SESSION_TOKEN%3A$TOKEN" \
  --collection $COLLECTION \
  --type json \
  --file  $JSON_PATH \
  --jsonArray