Verify File Layouts in QScan using Projects or Templates

Daniel Roques

Created May 11, 2023

Verify File Layouts in QScan using Projects or Templates

When delivering content to broadcasters, it is very common to follow a specific file layout where you must verify that certain things are present at certain timecodes.

One typical example would be:

  1. 00:58:00:00 Start TC of the file

  2. 00:58:00:00 to 00:58:30:00 Black and silence

  3. 00:58:30:00 to 00:58:50:00 75% color bar and test tone

  4. 00:58:50:00 to 01:00:00:00 Black and silence

  5. 10 seconds of black and silence at the tail of the file

In this tutorial, we will show you how to configure the project/template to detect this.

We will only configure #2, #3, and #5 since the rest should be the same but working with different intervals and different parameters.

QScan also has some premade templates with these kinds of settings. One good example is the UK DPP HD 4 tracks v5

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1

Go To Projects/New project or Templates/editor depending on whether you want to configure a project or a template.

2

In case of working with a new project, click on Analysis after filling in the details and selecting the input/output options.

In case of working with a new project, click on Analysis after filling in the details and selecting the input/output options.
3

We will start by setting up a threshold to detect that the expected black for the first 30 seconds is present. We will configure it as a logging threshold (green).

4

Click on Video Content.

Click on Video Content.
5

Click on Blackness.

Click on Blackness.
6

Click on Add Threshold.

Click on Add Threshold.
7

Select "blackness greater than 70 for 30 seconds" and choose logging as severity.

Select "blackness greater than 70 for 30 seconds" and choose logging as severity.
8

Edit the message by clicking on the "edit" icon and write your custom message.

Edit the message by clicking on the "edit" icon and write your custom message.
9

Click on Add Intervals.

Click on Add Intervals.
10

Click on From head.

Click on From head.
11

Type "00:58:30:00".

Type "00:58:30:00".
12

Click on Set Intervals.

Click on Set Intervals.
13

Now we will add a threshold for detecting that the expected black frame is not present in the first 30 seconds of the file.

Now we will add a threshold for detecting that the expected black frame is not present in the first 30 seconds of the file.
14

We now need to configure a threshold such as: "blackness is lower than 70 for any number of frames" and configure it as warning (orange) or critical (red).

We now need to configure a threshold such as: "blackness is lower than 70 for any number of frames" and configure it as warning (orange) or critical (red).
15

Now customize your message adding a text such as: "no Black detected from 00:58:00:00 to 00:58:30:00".

Now customize your message adding a text such as: "no Black detected from 00:58:00:00 to 00:58:30:00".
16

Now we want to detect whether we have 75% of color bars from 00:58:30:00 and 00:58:50:00. So now Click on Test Pattern.

Now we want to detect whether we have 75% of color bars from 00:58:30:00 and 00:58:50:00. So now Click on Test Pattern.
17

Click on Add Threshold.

Click on Add Threshold.
18

Now select the condition Test pattern equals 75.

Now select the condition Test pattern equals 75.
19

Select 20 seconds.

Select 20 seconds.
20

edit the message, and type "20 seconds of 75% color bars between 00:58:30:00 and 00:58:50:00".

edit the message, and type "20 seconds of 75% color bars between 00:58:30:00 and 00:58:50:00".
21

Now add the interval, by clicking on Add Intervals and click on from TCin/offset. Then select TCin and type the 00:58:30:00 and select TCout and type 00:58:50:00. Then click on Set intervals.

Now add the interval, by clicking on Add Intervals and click on from TCin/offset. Then select TCin and type the 00:58:30:00 and select TCout and type 00:58:50:00. Then click on Set intervals.
22

Now we will add a threshold for detecting color bars not present. So Click on Add Threshold and add a new warning or critical threshold for detection of "Test Pattern lower than 75 for 20 seconds".

Now we will add a threshold for detecting color bars not present. So Click on Add Threshold and add a new warning or critical threshold for detection of "Test Pattern lower than 75 for 20 seconds".
23

Type "20 seconds of 75% color bars not detected between 00:58:30:00 and 00:58:50:00".

Type "20 seconds of 75% color bars not detected between 00:58:30:00 and 00:58:50:00".
24

Now add the same intervals as before.

Now add the same intervals as before.
25

Click on From TC in / offset.

Click on From TC in / offset.
26

Type "00:58:30:00".

Type "00:58:30:00".
27

Type "00:58:50:00".

Type "00:58:50:00".
28

Click on Set Intervals.

Click on Set Intervals.
29

Now, we will configure the detection of at least 10 seconds of black at the tail of the file. So, proceed as usual.

Now, we will configure the detection of at least 10 seconds of black at the tail of the file. So, proceed as usual.
30

Configure a logging threshold with the condition "blackness greater than 70 for more than 9 seconds".

Configure a logging threshold with the condition "blackness greater than 70 for more than 9 seconds".
31

Now add the interval by clicking on Add Intervals.

Now add the interval by clicking on Add Intervals.
32

Click on From tail.

Click on From tail.
33

Select duration and Type "00:00:10:00".

Select duration and Type "00:00:10:00".
34

Click on Set Intervals.

Click on Set Intervals.
35

Customize the message by typing something similar to "at least 10 seconds of black at tail detected".

Customize the message by typing something similar to "at least 10 seconds of black at tail detected".
36

Now we will configure the threshold for detection of black detected at tail but with a duration that is lower than 10 seconds. As usual, click on Add Threshold.

Now we will configure the threshold for detection of black detected at tail but with a duration that is lower than 10 seconds. As usual, click on Add Threshold.
37

Select Blackness greater than 70 for less than 10 seconds and select warning or critical severity level.

Select Blackness greater than 70 for less than 10 seconds and select warning or critical severity level.
38

Click on Add Intervals.

Click on Add Intervals.
39

Click on From tail.

Click on From tail.
40

Select Duration and Type "00:00:10:00".

Select Duration and Type "00:00:10:00".
41

Click on Set Intervals.

Click on Set Intervals.
42

Now customize your message by typing "less than 10 seconds of black detected at tail".

Now customize your message by typing "less than 10 seconds of black detected at tail".
43

And we will now configure that no black is detected in the lst 10 seconds at the tail of the file. So again, Click on Add Threshold.

And we will now configure that no black is detected in the lst 10 seconds at the tail of the file. So again, Click on Add Threshold.
44

Configure a warning/critical threshold with the condition "blackness lower than 70".

Configure a warning/critical threshold with the condition "blackness lower than 70".
45

Now add your interval the same way you did with the previous one.

Now add your interval the same way you did with the previous one.
46

Click on From tail.

Click on From tail.
47

Select duration and Type "00:00:10:00".

Select duration and Type "00:00:10:00".
48

Click on Set Intervals.

Click on Set Intervals.
49

Customize your message by typing "No black detected at tail of file".

Customize your message by typing "No black detected at tail of file".
50

Now finish configuring your project or template with the rest of the parameters and save the project/template. You will now be able to detect whether the layout of the file is as expected.

Well done!
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