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/p/ - Photography

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Anonymous 06/19/14(Thu)01:16 UTC+1 No.2343945 Report

Sup /p/, closest section for my question so here it is: anybody know of any way to fix the syncing between audio and video? I recorded a ~7 hr video, but slowly the audio becomes out of sync with the video. By the end of the vid, it's so out of sync it's nearly impossible to watch.

Wat do?
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Anonymous 06/19/14(Thu)01:17 UTC+1 No.2343946 Report

>>2343945
who the fuck records 7 hours of video?
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Anonymous 06/19/14(Thu)01:23 UTC+1 No.2343949 Report

>>2343946

A guy with a fuck ton of HDD space
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Anonymous 06/19/14(Thu)01:35 UTC+1 No.2343951 Report

>>2343945
You should fix this kid of thing while recording. You can either use some kind of warp time code function, or at this point you'll probably need to give it to a audio engineer to stretch in a daw.
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Anonymous 06/19/14(Thu)04:06 UTC+1 No.2344035 Report

>>2343951
Not really something I can give to someone else. Maybe I can do that myself?
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Anonymous 06/19/14(Thu)05:10 UTC+1 No.2344055 Report

>>2344035
Not without expensive dedicated software and plenty of time learning. It'll basically be learning how to edit a photograph all over again.
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Anonymous 06/19/14(Thu)05:14 UTC+1 No.2344057 Report

>>2344035
>Not really something I can give to someone else

How can you have sex for 7 hours straight?
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Anonymous 06/19/14(Thu)05:35 UTC+1 No.2344065 Report

>>2344055
Can't I just freeze a piece of the video when it starts to go out of sync, keeping the audio playing, hence making them match up?

Or if the audio is what's ahead, maybe I can freeze the audio for a bit and allow the video to catch up?
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Anonymous 06/19/14(Thu)05:39 UTC+1 No.2344068 Report

It... it's porn, isn't it?

[EXIF data available. Click here to show/hide.]
Camera-Specific Properties:
Image-Specific Properties:
Image OrientationTop, Left-Hand
Color Space InformationsRGB
Image Width640
Image Height756
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Anonymous 06/19/14(Thu)10:10 UTC+1 No.2344167 Report

>>2344068
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Anonymous 06/19/14(Thu)11:08 UTC+1 No.2344185 Report

>>2344065
Why not speed up or slow down the audio?
It's hardly noticeable.

When they turn 24fps movies into 25fps TV broadcasts they speed up the audio 4% and nobody notices.

Also consider what caused this.
Maybe you've recorded at 29.97fps (often called '30') and playing at 30.00 fps? - or the opposite?
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Anonymous 06/19/14(Thu)13:19 UTC+1 No.2344206 Report

>>2343945
Assuming you don't mind cutting some of the clip, cut a section and then resync it with audio. Problem solved.
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Anonymous 06/19/14(Thu)15:16 UTC+1 No.2344231 Report

Sounds like an easy fix in Audacity.

Rip the audio out of the video, stretch the playback speed of the audio file to match the length of the video.
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Anonymous 06/19/14(Thu)22:46 UTC+1 No.2344494 Report

>>2344185
Frame rate per second is only for video, right? Audio is measured in bit rate I thought.
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Anonymous 06/20/14(Fri)12:27 UTC+1 No.2344971 Report

>>2344494
Audio is recorded in seconds. The nitrate is essentially how many tones it has to record a sound. Think of a piano that just has a fuckload of notes.
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