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FFmpeg is one of the most powerful tools for video transcoding and manipulation, but it's fairly complex and confusing to use. That's why I decided to create this cheat sheet which shows some of the most often used commands.
Let's start with some basics:
ffmpeg calls the FFmpeg application in the command line window, could also be the full path to the FFmpeg binary or .exe file
| // The following data should be run in the console while viewing the page https://read.amazon.com/ | |
| // It will export a CSV file called "download" which can (and should) be renamed with a .csv extension | |
| var db = openDatabase('K4W', '2', 'thedatabase', 1024 * 1024); | |
| getAmazonCsv = function() { | |
| // Set header for CSV export line - change this if you change the fields used | |
| var csvData = "ASIN,Title,Authors,PurchaseDate\n"; | |
| db.transaction(function(tx) { |
| for bucket in $(aws s3api list-buckets --query "Buckets[].Name" --output text); do aws cloudwatch get-metric-statistics --namespace AWS/S3 --metric-name BucketSizeBytes --dimensions Name=BucketName,Value=$bucket Name=StorageType,Value=StandardStorage --start-time $(date --iso-8601)T00:00 --end-time $(date --iso-8601)T23:59 --period 86400 --statistic Maximum | echo $bucket: $(numfmt --to si $(jq -r ".Datapoints[0].Maximum // 0")); done; |
| aws ec2 describe-snapshots --owner-ids self | jq '.Snapshots | [ group_by(.VolumeId)[] | { (.[0].VolumeId): { "count": (.[] | length), "size": ([.[].VolumeSize] | add) } } ] | add' |
| aws ec2 describe-snapshots --owner-ids self | jq '[.Snapshots[].VolumeSize] | add' |
| aws ec2 describe-snapshots --owner-ids self | jq '.Snapshots | length' |
| aws ec2 describe-volumes | jq -r '.Volumes | [ group_by(.State)[] | { (.[0].State): ([.[].Size] | add) } ] | add' |
| for stack in $(aws cloudformation list-stacks --stack-status-filter CREATE_COMPLETE UPDATE_COMPLETE | jq -r '.StackSummaries[].StackName'); do aws cloudformation describe-stack-resources --stack-name $stack | jq -r '.StackResources[] | select (.ResourceType=="AWS::EC2::Instance")|.PhysicalResourceId'; done; |
| aws cloudformation list-stacks | jq '.StackSummaries | [ group_by(.StackStatus)[] | { "status": .[0].StackStatus, "count": (. | length) }]' |