Does not decode ean-13 barcode from video if barcode is too small

[Mark Fisher]

Using BrowserMultiFormatReader.decodeFromVideoDevice, it does not decode an ean-13 barcode if the barcode does not take up quite a large area of the video.

This essentially means that, for example, scanning the barcode on the back of a book using my phone doesnt work, since the camera can't focus close enough to make the barcode big enough.

Is there a way around this?

[Józef Rzadkosz]

We need something like mask or scanning area, someone is focusing on this topic? This feature is really needed on mobile devices

[Valentine Nuikin]

In my case, similar problem with decoding small ean-13 barcode - was caused by black borders around barcode.
Also to resolve camera can't focus close enough I'm using camera zoom capability from MediaStreamTrack like this:

• track.getCapabilities() - to check camera/browser supports zoom
• track.applyConstraints({ advanced: [{zoom: nextZoom}] }) - to zoom

[Cenker Kumlucalı]

If you are doing it for an android, you will get what you want if you turn on the flash feature of your phone and zoom the camera (when the flash is turned on, the camera focuses better)

[Cenker Kumlucalı]

but ios doesn't allow to zoom or flash

[Mark Fisher]

@cenkerkumlucali I am not doing it for any particular operating system. It needs to work for all my users.

[Cenker Kumlucalı]

like i said ios doesn't allow it