Mdthbs

Is it safe to redirect stdout and stderr to the same file without file descriptor copies?

One word for 'the thing that attracts me'?

Why is unzipped directory exactly 4.0K (much smaller than zipped file)?

Paired t-test means that the variances of the 2 samples are the same?

Are there any German nonsense poems (Jabberwocky)?

What is the use case for non-breathable waterproof pants?

How to remove new line added by readarray when using a delimiter?

What could be my risk mitigation strategies if my client wants to contract UAT?

Are there historical examples of audiences drawn to a work that was "so bad it's good"?

Is keeping the forking link on a true fork necessary (Github/GPL)?

Why was this character made Grand Maester?

Why is this integration method not valid?

Is a world with one country feeding everyone possible?

Can a UK national work as a paid shop assistant in the USA?

Are cells guaranteed to get at least one mitochondrion when they divide?

Split into three!

Why Emacs (dired+) asks me twice to delete file?

How does the Earth's center produce heat?

Could a rotating ring space station have a bolo-like extension?

The disk image is 497GB smaller than the target device

Why is the Eisenstein ideal paper so great?

Cisco 3750X Power Cable

Using too much dialogue?

Why did other houses not demand this?

What does (($count+1)) do in this script?

What does echo $-1 display?How would I loop this command?What does “echo (ls)” do in bash?What does echo *?What does #var do?What does mean echo -e e - how escape?How does echo parse $100?What does command “echo run -d” do?What does echo $? do?How does this echo command work? “echo > file.txt Hello”

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

-1

Can anyone tell me what the purpose/action is of this area right here circled in neon green color? I would like to know its purpose in terms of what it does in a script.

while IꓝS= read -r line; do

    echo "----------------------------------------------------------------------"

    echo "SCENE START: $count/$scenes ($start,$line)"

    ffmpe𝗀 -threads 30 -𝚒 "$in" -ss "$start" -to "$line" -nostⅾ𝚒n -y -vcodeⅽ l𝚒bx264 -acoⅾeⅽ aaⅽ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

    echo "SCENE DONE:$count/$scenes ($start,$line)"

    echo "----------------------------------------------------------------------"

    start=$line

    count=$(($count+1))



sleep 0.5



done <"./$bn/timestamps_$in.txt"

echo "----------------------------------------------------------------------"

echo "LAST SCENE START:$count/$scenes ($start,enⅾ)"

𝖿𝖿mpeg -threaⅾs 30 -𝚒 "$in" -ss "$start" -nostd𝚒n -y -vcodeϲ l𝚒bx264 -acodeϲ aaϲ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

echo "LAST SCENE DONE:$count/$scenes ($start,enⅾ)"

echo video-editing source-code

share|improve this question

edited 2 hours ago

Anonymous User

asked 11 hours ago

Anonymous UserAnonymous User

937

add a comment | 

-1

Can anyone tell me what the purpose/action is of this area right here circled in neon green color? I would like to know its purpose in terms of what it does in a script.

while IꓝS= read -r line; do

    echo "----------------------------------------------------------------------"

    echo "SCENE START: $count/$scenes ($start,$line)"

    ffmpe𝗀 -threads 30 -𝚒 "$in" -ss "$start" -to "$line" -nostⅾ𝚒n -y -vcodeⅽ l𝚒bx264 -acoⅾeⅽ aaⅽ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

    echo "SCENE DONE:$count/$scenes ($start,$line)"

    echo "----------------------------------------------------------------------"

    start=$line

    count=$(($count+1))



sleep 0.5



done <"./$bn/timestamps_$in.txt"

echo "----------------------------------------------------------------------"

echo "LAST SCENE START:$count/$scenes ($start,enⅾ)"

𝖿𝖿mpeg -threaⅾs 30 -𝚒 "$in" -ss "$start" -nostd𝚒n -y -vcodeϲ l𝚒bx264 -acodeϲ aaϲ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

echo "LAST SCENE DONE:$count/$scenes ($start,enⅾ)"

echo video-editing source-code

share|improve this question

edited 2 hours ago

Anonymous User

asked 11 hours ago

Anonymous UserAnonymous User

937

add a comment | 

Can anyone tell me what the purpose/action is of this area right here circled in neon green color? I would like to know its purpose in terms of what it does in a script.

while IꓝS= read -r line; do

    echo "----------------------------------------------------------------------"

    echo "SCENE START: $count/$scenes ($start,$line)"

    ffmpe𝗀 -threads 30 -𝚒 "$in" -ss "$start" -to "$line" -nostⅾ𝚒n -y -vcodeⅽ l𝚒bx264 -acoⅾeⅽ aaⅽ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

    echo "SCENE DONE:$count/$scenes ($start,$line)"

    echo "----------------------------------------------------------------------"

    start=$line

    count=$(($count+1))



sleep 0.5



done <"./$bn/timestamps_$in.txt"

echo "----------------------------------------------------------------------"

echo "LAST SCENE START:$count/$scenes ($start,enⅾ)"

𝖿𝖿mpeg -threaⅾs 30 -𝚒 "$in" -ss "$start" -nostd𝚒n -y -vcodeϲ l𝚒bx264 -acodeϲ aaϲ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

echo "LAST SCENE DONE:$count/$scenes ($start,enⅾ)"

echo video-editing source-code

share|improve this question

edited 2 hours ago

Anonymous User

asked 11 hours ago

Anonymous UserAnonymous User

937

while IꓝS= read -r line; do

    echo "----------------------------------------------------------------------"

    echo "SCENE START: $count/$scenes ($start,$line)"

    ffmpe𝗀 -threads 30 -𝚒 "$in" -ss "$start" -to "$line" -nostⅾ𝚒n -y -vcodeⅽ l𝚒bx264 -acoⅾeⅽ aaⅽ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

    echo "SCENE DONE:$count/$scenes ($start,$line)"

    echo "----------------------------------------------------------------------"

    start=$line

    count=$(($count+1))



sleep 0.5



done <"./$bn/timestamps_$in.txt"

echo "----------------------------------------------------------------------"

echo "LAST SCENE START:$count/$scenes ($start,enⅾ)"

𝖿𝖿mpeg -threaⅾs 30 -𝚒 "$in" -ss "$start" -nostd𝚒n -y -vcodeϲ l𝚒bx264 -acodeϲ aaϲ "./$bn/"$in"_$count-of-$scenes.mp4" # filename formatting option 2: $count-of-"$scenes"_$in"

echo "LAST SCENE DONE:$count/$scenes ($start,enⅾ)"

share|improve this question

edited 2 hours ago

Anonymous User

asked 11 hours ago

Anonymous UserAnonymous User

937

share|improve this question

edited 2 hours ago

Anonymous User

asked 11 hours ago

Anonymous UserAnonymous User

937

asked 11 hours ago

Anonymous UserAnonymous User

937

asked 11 hours ago

Anonymous UserAnonymous User

937

1 Answer
1

active

oldest

votes

3

It increments the value of the variable count by one.

---

The line reads

count=$(($count+1))

This is an assignment to the variable count. The value that is assigned is an arithmetic expansion, $(( ... )). The arithmetic expression inside $(( ... )) will be evaluated and the whole arithmetic expansion will be replaced by the resulting value, as a string of digits.

The arithmetic expression is $count + 1. This evaluates to the value of the variable count, plus one.

The $ on the variable name is not needed here as it's an arithmetic context. The line could therefore be written as

count=$(( count + 1 ))

---

The effect of this counting in the code is that after the loop, the variable count will hold the number of lines read from the file ./$bn/timestamps_$in.txt.

The script also stores the count of lines in the variable scenes before the loop, so the echo in the loop will show SCENE START: X/Y with X running from 0 to however many lines there are in the file, minus one (since the increment of count happens at the end of the loop), and where Y is the total number of lines in the file.

---

I'm also noticing that you have random non-ASCII characters in the code, such as in 𝖿𝖿mpe𝗀 (instead of ffmpeg; both f and g non-ASCII), and in -nostⅾ𝚒n (instead of -nostdin; i and n non-ASCII). These would likely prevent your script from running correctly.

share|improve this answer

edited 10 hours ago

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @AnonymousUser no, sorry, but on this site we really don't like removing content. While this might have answered your question, the objective here is to build up a resource with useful information for future users. So even if your question is now answered, this answer (and your question) should remain since they might help the next user with the same issue. That's precisely why the system doesn't let you delete your question if it's been answered. So instead of asking Kusalananda to delete, please take a moment and accept this answer instead.
  
  – terdon♦
  6 hours ago
  

  
  
  
  

add a comment | 

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f519953%2fwhat-does-count1-do-in-this-script%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

3

It increments the value of the variable count by one.

---

The line reads

count=$(($count+1))

This is an assignment to the variable count. The value that is assigned is an arithmetic expansion, $(( ... )). The arithmetic expression inside $(( ... )) will be evaluated and the whole arithmetic expansion will be replaced by the resulting value, as a string of digits.

The arithmetic expression is $count + 1. This evaluates to the value of the variable count, plus one.

The $ on the variable name is not needed here as it's an arithmetic context. The line could therefore be written as

count=$(( count + 1 ))

---

The effect of this counting in the code is that after the loop, the variable count will hold the number of lines read from the file ./$bn/timestamps_$in.txt.

The script also stores the count of lines in the variable scenes before the loop, so the echo in the loop will show SCENE START: X/Y with X running from 0 to however many lines there are in the file, minus one (since the increment of count happens at the end of the loop), and where Y is the total number of lines in the file.

---

I'm also noticing that you have random non-ASCII characters in the code, such as in 𝖿𝖿mpe𝗀 (instead of ffmpeg; both f and g non-ASCII), and in -nostⅾ𝚒n (instead of -nostdin; i and n non-ASCII). These would likely prevent your script from running correctly.

share|improve this answer

edited 10 hours ago

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @AnonymousUser no, sorry, but on this site we really don't like removing content. While this might have answered your question, the objective here is to build up a resource with useful information for future users. So even if your question is now answered, this answer (and your question) should remain since they might help the next user with the same issue. That's precisely why the system doesn't let you delete your question if it's been answered. So instead of asking Kusalananda to delete, please take a moment and accept this answer instead.
  
  – terdon♦
  6 hours ago
  

  
  
  
  

add a comment | 

3

It increments the value of the variable count by one.

---

The line reads

count=$(($count+1))

This is an assignment to the variable count. The value that is assigned is an arithmetic expansion, $(( ... )). The arithmetic expression inside $(( ... )) will be evaluated and the whole arithmetic expansion will be replaced by the resulting value, as a string of digits.

The arithmetic expression is $count + 1. This evaluates to the value of the variable count, plus one.

The $ on the variable name is not needed here as it's an arithmetic context. The line could therefore be written as

count=$(( count + 1 ))

---

The effect of this counting in the code is that after the loop, the variable count will hold the number of lines read from the file ./$bn/timestamps_$in.txt.

The script also stores the count of lines in the variable scenes before the loop, so the echo in the loop will show SCENE START: X/Y with X running from 0 to however many lines there are in the file, minus one (since the increment of count happens at the end of the loop), and where Y is the total number of lines in the file.

---

I'm also noticing that you have random non-ASCII characters in the code, such as in 𝖿𝖿mpe𝗀 (instead of ffmpeg; both f and g non-ASCII), and in -nostⅾ𝚒n (instead of -nostdin; i and n non-ASCII). These would likely prevent your script from running correctly.

share|improve this answer

edited 10 hours ago

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  @AnonymousUser no, sorry, but on this site we really don't like removing content. While this might have answered your question, the objective here is to build up a resource with useful information for future users. So even if your question is now answered, this answer (and your question) should remain since they might help the next user with the same issue. That's precisely why the system doesn't let you delete your question if it's been answered. So instead of asking Kusalananda to delete, please take a moment and accept this answer instead.
  
  – terdon♦
  6 hours ago
  

  
  
  
  

add a comment | 

It increments the value of the variable count by one.

---

The line reads

count=$(($count+1))

This is an assignment to the variable count. The value that is assigned is an arithmetic expansion, $(( ... )). The arithmetic expression inside $(( ... )) will be evaluated and the whole arithmetic expansion will be replaced by the resulting value, as a string of digits.

The arithmetic expression is $count + 1. This evaluates to the value of the variable count, plus one.

The $ on the variable name is not needed here as it's an arithmetic context. The line could therefore be written as

count=$(( count + 1 ))

---

The effect of this counting in the code is that after the loop, the variable count will hold the number of lines read from the file ./$bn/timestamps_$in.txt.

The script also stores the count of lines in the variable scenes before the loop, so the echo in the loop will show SCENE START: X/Y with X running from 0 to however many lines there are in the file, minus one (since the increment of count happens at the end of the loop), and where Y is the total number of lines in the file.

---

I'm also noticing that you have random non-ASCII characters in the code, such as in 𝖿𝖿mpe𝗀 (instead of ffmpeg; both f and g non-ASCII), and in -nostⅾ𝚒n (instead of -nostdin; i and n non-ASCII). These would likely prevent your script from running correctly.

share|improve this answer

edited 10 hours ago

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

count=$(($count+1))

count=$(( count + 1 ))

share|improve this answer

edited 10 hours ago

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463

answered 11 hours ago

Kusalananda♦Kusalananda

147k18278463