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Convert Audio File to MP3

$10-40 USD

Closed
Posted almost 9 years ago

$10-40 USD

Paid on delivery
We have the following audio file (.RAS file) from a DVR attached. We need it converting into an MP3, the total length should be 4 minutes, 58 seconds. The recording should contain beeps every 2 seconds. The first developer to send a successfully converted file which is correct will be awarded the job. We then require the developer to provided details of how we can do this ourselves (so we can replicate results) in the future using free libraries (ffmpeg etc or similar) which can be used in a simple script. We have had a number of developers who have promised to do this, but failed, therefore once we receive the mp3 version (so we know that you can do the work it will be allocated - you can then provide further details after receiving the work). We are looking to build long term relationships with developers, thanks!
Project ID: 7866450

About the project

19 proposals
Remote project
Active 9 yrs ago

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19 freelancers are bidding on average $31 USD for this job
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I tried to open the file with 5 programs. Says it´s empty, broken, failed, etc. Are you sure is the correct file? Thanks, Sebastian
$50 USD in 3 days
4.9 (128 reviews)
7.5
7.5
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Hi! Your files are ready! I'll send them to you after the approval of the project! ) I look forward to our cooperation! Thank you
$30 USD in 1 day
5.0 (27 reviews)
5.4
5.4
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Hi I am biding as i will try to convert the file and send you a sample tomorrow. Is this a Nintendo audio format? If its possible i will need to know the info you have for this kind of files. Kind regards Vasil Zguri
$50 USD in 2 days
5.0 (36 reviews)
5.0
5.0
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A proposal has not yet been provided
$30 USD in 1 day
5.0 (14 reviews)
4.2
4.2
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Hello, Carefully reading your job posting and understand your full expectation I think I can done well. I love video editing. I am using very powerful software like after effects, premier pro and another helping software. I understand fully so I think I am good fit this job. Waiting for your kind’s response. Thanks
$40 USD in 1 day
5.0 (6 reviews)
3.5
3.5
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Hello, I have been using ffmpeg from past 4 years. I can re-encode or de-code your .ras file in any format you want. Information about your attached file, attached file is a sun raster image file, it does not have any audio. So, it can't be converted to a .mp3. It has a image with symbol of x. Using ffmpeg we can decode sunrast files and convert them to .mp3. If you want to test my skills, I request you to send a audio file of some long duration like 30-40 seconds which I will re-encode and send it back to you based upon which you can take your decision to assign the project.
$15 USD in 1 day
4.8 (2 reviews)
2.2
2.2
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So far I know that the file consists of 1795 frames of 496 bytes each, and that the 496 byte frame is defined by the 2nd set of 4 bytes in each frame. Also, the 4th set of 4 bytes counts up by 4 every frame, while the 3rd set counts up by 1 usually every 6 frames, but sometimes it takes 7 frames. The first set of 4 bytes almost always has a value of 2, but sometimes it's 10, and it's even more rarely 8, although at the end there's 54 consecutive frames where it's 8. I theorize this has something to do with what compression method/amount is being used in the current frame, but I'm not sure. I'm fairly certain everything after the first 16 bytes is the compressed data. Most of this is educated guesswork, I'm not sure if this could really be cracked if the file spec isn't public. It might help a lot if you could say what brand and model DVR the file came from. Also, I think it's worth mentioning that, if my math is correct, the bitrate on this file is something like 23 or 24 kbps, which is pretty abysmal, but maybe that's not important in this case. Anyway, if there's any more information you might be able to give me, I may be able to help you out, but otherwise it might be kinda tough.
$30 USD in 7 days
4.0 (1 review)
1.0
1.0
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A proposal has not yet been provided
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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I am Ready for the Project Sir I have already Converted your File to MP3 & It contains just Noice. I use high end professional Audio Editing tools & I can add Beeps every 2 Second. Please PM for Sample & Provide a ras file with some sound. Thanks
$20 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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Already done this job thousands of times...if you can send me the file i will send you the converted one as soon as possible have a nice day
$25 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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Предложение еще не подано
$30 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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A proposal has not yet been provided
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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hi there, i would like to try where can i download the file? Wiche kind of "beep" are you needing? any example?cheers. Hernan
$30 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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Hi,sir. I am interested when saw your post. I already have done similar task . I have lots of experience on the field you want. My skill:Mathematics,Matlab,C,C++,Excel,web scraping,data mining,website development,Reversing,Engineering,algorithm.... I can help you good. Please, contact with me. Regards.
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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I have been working as a sound engineer doing recording and editing here in a private limited company for the past 3 years.
$25 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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I have worked with audio formats and music recording for over 15 years. If the file is correct, there should be no problems converting it. However, it seems the file in question might be corrupted (it is the first time my software has not accepted a raw format audio file to be read)? Anyways; you will find that out if anyone else can convert this file :) If not, could you provide some more information about this file? 32 or 64 bit etc? Best Regards Kaare Jenssen
$15 USD in 1 day
0.0 (0 reviews)
0.0
0.0
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A proposal has not yet been provided
$30 USD in 1 day
0.0 (0 reviews)
0.0
0.0

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London, United Kingdom
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