ffmpeg -i /PATH/TO/input_file.ext -c copy -map 0 /PATH/TO/output_file.ext

This script will rewrap a video file. It will create a new video video file where the inner content (the video, audio, and subtitle data) of the original file is unchanged, but these streams are rehoused within a different container format.

ffmpeg

starts the command

-i /PATH/TO/input_file.ext

path and name of the input file. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.

-c copy

copy the streams directly, without re-encoding.

-map 0

map all streams of the input to the output.
By default, FFmpeg will only map one stream of each type (video, audio, subtitles) to the output file. However, files may have multiple streams of a given type - for example, a video may have several audio tracks for different languages. Therefore, if you want to preserve all the streams in the original, it's necessary to use this option.

/PATH/TO/output_file.ext

path and name of the output file. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.
The new container you are rewrapping to is defined by the filename extension used here, e.g. .mkv, .mp4, .mov.

ffmpeg -i /PATH/TO/input_file -f rawvideo -c:v copy /PATH/TO/output_file.dv

This script will take a video that is encoded in the DV Codec but wrapped in a different container (such as MOV) and rewrap it into a raw DV file (with the .dv extension). Since DV files potentially contain a great deal of provenance metadata within the DV stream, it is necessary to rewrap files in this method to avoid unintentional stripping of this metadata.

ffmpeg

starts the command

-i /PATH/TO/input_file

path and name of the input file. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.

-f rawvideo

this tells FFmpeg to pass the video stream as raw video data without remuxing. This step is what ensures the survival of embedded metadata versus a standard rewrap.

-c:v copy

copy the DV stream directly, without re-encoding.

/PATH/TO/output_file.dv

tells FFmpeg to use the DV wrapper for the output. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.

ffmpeg -i /PATH/TO/input_file.MOV -c:v ffv1 -level 3 -coder 0 -pix_fmt yuv422p10 -slices 16 -slicecrc 1 -c:a pcm_s24le /PATH/TO/output_file.MKV

To run this script as a loop, first cd into the directory holding the .MOVs you want to transcode.
Then, execute the following:

#!/bin/bash
for i in *.mov;
do ffmpeg -i ${i} -c:v ffv1 -level 3 -coder 0 -pix_fmt yuv422p10 -slices 16 -slicecrc 1 -c:a pcm_s24le ${i%.*}.mkv;
done

ffmpeg -i /PATH/TO/input_file -ss 00:02:00 -to 00:55:00 -c copy -map 0 /PATH/TO/output_file

This command allows you to create an excerpt from a file without re-encoding the audiovisual data.

ffmpeg

starts the command

-i /PATH/TO/input_file

path, name and extension of the input file. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.

-ss 00:02:00

sets in point at 00:02:00

-to 00:55:00

sets out point at 00:55:00

-c copy

use stream copy mode (no re-encoding)

-map 0

tells FFmpeg to map all streams of the input to the output.

/PATH/TO/output_file

path, name and extension of the output file. To copy the full path of a file on a Mac, right-click on the file, then, while in the right-click menu, hold down the "OPTION" key to reveal the "Copy as Pathname" option.

Variation: trim file by setting duration, by using -t instead of -to

ffmpeg -i input_file -ss 00:05:00 -t 10 -c copy output_file

-ss 00:05:00 -t 10

Beginning five minutes into the original video, this command will create a 10-second-long excerpt.

This loop will run VideoAIP on all .mkvs in a directory. Instructions for modifying to accept other extensions is presented below.

#!/bin/bash
while read TARGET
do videoaip -l auto "$TARGET" </dev/null
done < <(find /PATH/TO/DIRECTORY -name '*.mkv')

VideoAIP will try to process any files that it comes across. To ensure VideoAIP only processes the file extensions you've defined, you can replace the last line of the script with:
done < <(find /PATH/TO/DIRECTORY -name '*.mkv' -o -name '*.dv' -o -name '*.mov')

This command will find all .mkv, .dv, and .mov files in the defined directory.

Using Crontab-UI

To use crontab-ui, first install node using:
brew install node

Then, install crontab-ui using:
npm -install -g crontab-ui

You may need to use sudo when running the command above.

To use: From the terminal, run crontab-ui

You will see the following output:
Node version: [CURRENT VERSION]
Crontab UI is running at http://[IP ADDRESS]

Now, open your web browser and navigate to http://[IP ADDRESS]

From this page, you'll be able to schedule, edit, save, and delete jobs.

          Here is the format for a simple Cron Job:
0 22 * * * /Users/MIPoPS/Desktop/BackUp.sh

The first part is 0 22 * * * This is where we schedule the timer. This job will run at 10 pm every evening.
The rest of the line is the command as it would run from the command line. This job would run the BackUp shell script from MIPoPS desktop.

Each asterix represents a unit of time, as follows:
Minute(0-59) Hour(0-24) Day_of_month(1-31) Month(1-12) Day_of_week(0-6)

Use MILITARY TIME!

This cron job will run at minute zero, every hour (i.e. an hourly cron job):
0 * * * * [command]

This is also an hourly cron job but run at minute 15 instead (i.e. 00:15, 01:15, 02:15 etc.):
15 * * * * [command]

This will run once a day, at 2:30am:
30 2 * * * [command]

This will run once a month, on the second day of the month at midnight (i.e. January 2nd 12:00am, February 2nd 12:00am etc.):
0 0 2 * * [command]

If you need help generating the crontab syntax, try using Corntab.

          Here is the layout of the Crontab-ui website.

From the Crontab-ui page, click New to describe and create new job. Here is an example of a job that would run the shell script "MH_to_HD_sync.sh" at 6:00am daily.

Hit "Save" when you're finished. Then, click "Save to crontab". This schedules the job. It will now run at the appointed time.

To run the job immediately, click "Run".

To stop the job from running, click "Stop", then click "Save to crontab".

To re-schedule (or resume) a job, click "Start", then click "Save to crontab".

To see what jobs are scheduled to run, from the terminal, run crontab -e. You'll see a list of all jobs that are saved to the crontab.