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Questions tagged [blob]

A BLOB is a collection of binary data stored as a single entity in a database management system.

A BLOB (binary large object, basic large object, BLOB, or BLOb) is a collection of binary data stored as a single entity in a database management system. Blobs are typically images, audio or other multimedia objects, though sometimes binary executable code is stored as a blob.

Beyond that, the term BLOB has various slightly related usages, see wikipedia for further examples.

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Weblogic server -Fail to convert to internal representation: weblogic.jdbc.wrapper.Blob_oracle_sql_BLOB@3

While passing a file in the form of a blob to an Oracle database- I'm getting this error in Weblogic. This same code works fine in Tomcat server: Cause: java.sql.SQLException: Fail to convert to internal representation: …
syam kumar c
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Emgu CV Blob Detection

I'm using Emgu CV 2.1 and want to have a simple blob detection. I search for white blobs in a black image. Unfortunalty I can not find out how to do this! Do I need an additional library? Or how is this function called in emgu cv? Or is there really…
Benks
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Is there a good way to play raw wav data in the browser?

I am trying to play wav raw data in the browser, which is transmitted from the nodejs server via socket.io, the main idea is to play the receiving data as soon as posible, so I don't need to wait until receiving data is done. I tried to use blob for…
DrWatsonFromTheForrest
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Angular - canvas.toBlob callback´s argument is null

Basing my code in these two tutorials I found: Capturing Camera using Angular 5. JavaScript: How to capture image from video?. I´m trying to get the video´s frames and then convert them into blobs. But I haven´t been able to do it. This is the…
alberto vielma
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how to convert blob data to downloadable excel/CSV file in react js

i am getting a blob from the Get API with response shown here logic to create file like so after getting the response. const url = URL.createObjectURL(new Blob([result], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'…
Rajat
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Unable to resolve data for blob

I'm trying to convert a Uint8Array to Blob then read Blob with FileReader but I'm getting the following error: Error: Unable to resolve data for blob: (...blob id) My code looks like following: const segmentation = await…
Ivan QB
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What's the best way to get an audio buffer into a blob that can be played by an audio element?

I have an AudioBuffer stored as a variable, and I would like to have it be played by an Audio element. Here is my current non-functioning code: const blob = new Blob(audioBuffer.getChannelData(1), { type: "audio/wav" }); const url =…
xphateslater
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Angular: how to create Blob from image file?

I'm trying to make a preview of some image file that I get from the input, example file looks like this: So I found out that to show preview of file first of all I have to change this file to Blob, I was looking for solution and I found something…
Dominik Z
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downloading data using a blob link

using data from this website: https://ourworldindata.org/grapher/total-daily-covid-deaths?tab=map I am trying to interact with the link 'total-daily-covid-deaths.csv' which has the href link…
Finn Formica
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Sending Blob raw data of my webcam from Vue-axios to a Laravel backend

I have webcam stream in a Blog object and I need to send it to my backend. I made it: setInterval(function(){ var blobs=new Blob(that.chunks); console.log(blobs);//this displays that blobs is full of nnnnn bytes …
ottaviane
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How can I use Axios to get an array of files to give to Pizzip to generate a .zip archive?

Here's the documentation for Pizzip for those unfamiliar: https://github.com/open-xml-templating/pizzip/tree/master/documentation Also, I'm using VueJS (2), ES6, TS I am trying to download individual files with Axios and then put them into a zip…
Monica
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How do I handle errors when responseType is blob using Vuejs?

My Question is similar to this which doesn't have an answer. I tried to search many other places but still don't have an answer. I'm trying to download file using Axios in VueJs as a blob: return new Promise((resolve, reject) => { …
iQuestProgrammer
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Download a PNG file served as binary/octet-stream

steps that will reproduce the problem : I am saving a Blob object as form data using a service and I am receiving the response as content-type: application/octet-stream as in attached image What is the expected result? To download and view the the…
Kishore Jv
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I'm not able to view the total length of the recorded video and the timelines

I need help with a limitation that I am facing. Technical Stack: Angular 7, HTML5, Microsoft Azure Blob Storage, RecordRTC I am trying to record a video using the HTML5 video tag which gets stored into local storage in a Blob format using RecordRTC.…
Suhas Kurade
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Javascript: Argument 1 of File constructor can't be converted to a sequence

I'm trying to change the filename of a File object via javascript: test