how to user “compressor” with ffmpeg
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
I want to use the compressor to process the video with the command parameters:
Compressor:
- Threshold = -21dB
- Noise floor = -35dB
- Ratio = 9:1
- Attack time = 0,20 secs
Release time = 1,0 secs
ffmpeg -i input -af "comparessor=?" output
Help me complete command on,pls
@Mulvya
audio ffmpeg
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
add a comment |
I want to use the compressor to process the video with the command parameters:
Compressor:
- Threshold = -21dB
- Noise floor = -35dB
- Ratio = 9:1
- Attack time = 0,20 secs
Release time = 1,0 secs
ffmpeg -i input -af "comparessor=?" output
Help me complete command on,pls
@Mulvya
audio ffmpeg
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48
add a comment |
I want to use the compressor to process the video with the command parameters:
Compressor:
- Threshold = -21dB
- Noise floor = -35dB
- Ratio = 9:1
- Attack time = 0,20 secs
Release time = 1,0 secs
ffmpeg -i input -af "comparessor=?" output
Help me complete command on,pls
@Mulvya
audio ffmpeg
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
I want to use the compressor to process the video with the command parameters:
Compressor:
- Threshold = -21dB
- Noise floor = -35dB
- Ratio = 9:1
- Attack time = 0,20 secs
Release time = 1,0 secs
ffmpeg -i input -af "comparessor=?" output
Help me complete command on,pls
@Mulvya
audio ffmpeg
audio ffmpeg
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
asked Jul 24 '16 at 10:18
Ffmpeg fansFfmpeg fans
2527
2527
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48
add a comment |
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48
add a comment |
1 Answer
1
active
oldest
votes
The audio filter should be
-af acompressor=threshold=-21dB:ratio=9:attack=200:release=1000
You can supposedly express threshold as decibels but I couldn't get it to work. Fractions work, so
-af acompressor=threshold=0.089:ratio=9:attack=200:release=1000
where the threshold value is 10 to the power of (decibel value/20)
e.g. -21 dB would be 10 ^ (-21/20) = 10 ^ -1.05 = 0.08912...
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
add a comment |
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
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: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
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
});
}
});
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
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1104534%2fhow-to-user-compressor-with-ffmpeg%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The audio filter should be
-af acompressor=threshold=-21dB:ratio=9:attack=200:release=1000
You can supposedly express threshold as decibels but I couldn't get it to work. Fractions work, so
-af acompressor=threshold=0.089:ratio=9:attack=200:release=1000
where the threshold value is 10 to the power of (decibel value/20)
e.g. -21 dB would be 10 ^ (-21/20) = 10 ^ -1.05 = 0.08912...
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
add a comment |
The audio filter should be
-af acompressor=threshold=-21dB:ratio=9:attack=200:release=1000
You can supposedly express threshold as decibels but I couldn't get it to work. Fractions work, so
-af acompressor=threshold=0.089:ratio=9:attack=200:release=1000
where the threshold value is 10 to the power of (decibel value/20)
e.g. -21 dB would be 10 ^ (-21/20) = 10 ^ -1.05 = 0.08912...
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
add a comment |
The audio filter should be
-af acompressor=threshold=-21dB:ratio=9:attack=200:release=1000
You can supposedly express threshold as decibels but I couldn't get it to work. Fractions work, so
-af acompressor=threshold=0.089:ratio=9:attack=200:release=1000
where the threshold value is 10 to the power of (decibel value/20)
e.g. -21 dB would be 10 ^ (-21/20) = 10 ^ -1.05 = 0.08912...
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
The audio filter should be
-af acompressor=threshold=-21dB:ratio=9:attack=200:release=1000
You can supposedly express threshold as decibels but I couldn't get it to work. Fractions work, so
-af acompressor=threshold=0.089:ratio=9:attack=200:release=1000
where the threshold value is 10 to the power of (decibel value/20)
e.g. -21 dB would be 10 ^ (-21/20) = 10 ^ -1.05 = 0.08912...
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
edited Jul 25 '16 at 5:08
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
answered Jul 24 '16 at 20:33
GyanGyan
15.9k21848
15.9k21848
add a comment |
add a comment |
Thanks for contributing an answer to Super User!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
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
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f1104534%2fhow-to-user-compressor-with-ffmpeg%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
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
Required, but never shown
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
Required, but never shown
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
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
@Mulvya help me?
– Ffmpeg fans
Jul 24 '16 at 10:48