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Old 11-29-2009, 06:46 AM   #1 (permalink)
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Default Extract audio from recorded video

Does anyone have any idea how to extract audio from recorded video.
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Old 11-29-2009, 10:10 AM   #2 (permalink)
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Originally Posted by baxtercr View Post
Does anyone have any idea how to extract audio from recorded video.
Is this an iphone SDK question or just a general qiestion?
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Old 11-29-2009, 10:46 AM   #3 (permalink)
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SDK I would say. I'm recording video using UIImagePickerController. I then want to extract the audio to do some processing on it. I know we could just record audio, but we want the video too so we would like to record the video, and then process it on the iphone.

Any ideas would be a great help
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Old 11-30-2009, 05:53 AM   #4 (permalink)
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It looks like using the ffmpeg may be the answer. I'll have a look at that unless anyone has any other suggestions
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Old 02-01-2010, 09:43 AM   #5 (permalink)
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I used Video mp3 Extractor PRO from geovid.com. Try!
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Old 02-05-2010, 03:19 PM   #6 (permalink)
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Originally Posted by Fickyou View Post
I used Video mp3 Extractor PRO from geovid.com. Try!
At a high level overview this is what you do.

Use ffmpeg, open the video with av_open_file_input

get the index to the video segments
put the samples into the audio buffer

copy the samples from the buffer sequentilly to a new file.
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Old 08-02-2011, 04:20 AM   #7 (permalink)
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Originally Posted by baxtercr View Post
Does anyone have any idea how to extract audio from recorded video.
Hello guys,

check out this nifty toolkit to extract audio. For example, give it a try for extracting music from youtube. If you get it, it proves that you are able to extract audio from any recorded video.
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Old 09-18-2011, 05:42 AM   #8 (permalink)
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Quote:
Originally Posted by michelle View Post
At a high level overview this is what you do.

Use ffmpeg, open the video with av_open_file_input

get the index to the video segments
put the samples into the audio buffer

copy the samples from the buffer sequentilly to a new file.
Hi Michell,

I am trying to convert .mov to .mp4. I am able to convert video but audio is having issues. Should i only decode audio and copy raw data in output file or i have to encode audio as well. I am trying output example.c code with no luck. It would great if you have any sample.
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Old 09-18-2011, 11:44 PM   #9 (permalink)
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ffmpegX a DVD, SVCD, VCD, CVD, VOB, DivX, XviD, H.264, PSP, iPod, MP4, MOV, FLV encoder for Mac OSX

this will let you choose a video file as an input and if under the "TO" field you select mp3 or whatever audio format it will just rip the audio to a standalone file.
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Old 09-19-2011, 02:15 AM   #10 (permalink)
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Originally Posted by cutecute View Post
ffmpegX a DVD, SVCD, VCD, CVD, VOB, DivX, XviD, H.264, PSP, iPod, MP4, MOV, FLV encoder for Mac OSX

this will let you choose a video file as an input and if under the "TO" field you select mp3 or whatever audio format it will just rip the audio to a standalone file.
I was talking to do this programmatically after compiling and integrating ffmpeg libraries for ios 4.3 and then converting .mov files in to .mp4 files in IPhone. I am able to convert video but facing issue to integrate audio.
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