MediaInfo / Feature Requests / #372 Disable automatic detection of images as video stream

#372 Disable automatic detection of images as video stream

Status: open-accepted

Owner: Jerome Martinez

Labels: None

Priority: 3

Updated: 2012-02-15

Created: 2012-02-15

Creator: EricV

Private: No

file /multimedia/Photos/noirmoutier2009/IMG_1731.JPG
/multimedia/Photos/noirmoutier2009/IMG_1731.JPG: JPEG image data, EXIF standard

tri-yann3:/home/valette# mediainfo /multimedia/Photos/noirmoutier2009/IMG_1731.JPG
General
Complete name : /multimedia/Photos/noirmoutier2009/IMG_1731.JPG
Format : JPEG
File size : 123 MiB

Video
Format : JPEG
Width : 3 888 pixels
Height : 2 592 pixels
Display aspect ratio : 3:2
Chroma subsampling : 4:2:2
Bit depth : 8 bits
Compression mode : Lossy
Stream size : 123 MiB (100%)

Discussion

EricV - 2012-02-15

ls -l /multimedia/Photos/noirmoutier2009/IMG_1731.JPG
-rwxrwxrwx 1 valette valette 4091526 févr. 15 2009 /multimedia/Photos/noirmoutier2009/IMG_1731.JPG

Sorry I cannot upload the jpeg due to its size.

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Jerome Martinez - 2012-02-15

This is a wanted "feature": when there are several (more than 24, arbitrary choice) files with consecutive numbers (IMG_1731.JPG, IMG_1732.JPG, IMG_1733.JPG...), MediaInfo considers that this is a video stream with one file per image, and the size is the total size of the images (IMG_1731.JPG up to the last file).

This kind of "stream" is often used in professional systems, and I did not currently find a way to differentiate consecutive video frames from camcorder and pictures from a camera.

I don't plan to change this behavior (maybe an option to deactivate the feature?)

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Jerome Martinez - 2012-02-15

status: open --> closed-wont-fix
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EricV - 2012-02-15

Given the fact that by default numbering is incremented by one, this is a crasy assumption. My digital camera is not even able to generate MJPEG!

So at least give an option that can be passed up to the library

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EricV - 2012-02-15

besides, even if I call it on a single photo it says the same thing!

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EricV - 2012-02-15

It even more crasy as if I understand correctly calling mediainfo on the same file but simply moving the file to annother directory result will be diffreent.

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Jerome Martinez - 2012-02-15

> Given the fact that by default numbering is incremented by one, this is a
crasy assumption.

This is an asumption that people who pay me to implement such feature have.
As I said, I can not make the difference between a camcorder recording 1 frame per file and your camera. MediaInfo is not used a lot for stand alone images, this is not my priority.

> besides, even if I call it on a single photo it says the same thing!

In a repertory without the other files?

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Jerome Martinez - 2012-02-15

summary: mediainfo 0.7.53 report jpeg file as video with wrong size --> Disable automatic detection of images as video stream

milestone: 504099 -->

labels: 553241 -->

status: closed-wont-fix --> open-accepted
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Jerome Martinez - 2012-02-15

Changed to feature request: option for disabling the automatic detection consecutive image files as a video stream.

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Jerome Martinez - 2012-02-15

Accepted.

Warning: non-paid feature request are set to low priority, I don't know when I have time to handle it.
If you desire to accelerate the development, don't hesitate to contact me for a quotation.

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Jerome Martinez - 2012-02-15

priority: 5 --> 3
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EricV - 2012-02-15

BTW: you have seen many camera producing 3 888x 2 592 (e.gf 4K video)? Given the fact you read the directory, I guess I can find the offending code myself. Its the beauty of open source.

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Jerome Martinez - 2012-02-15

> you have seen many camera producing 3 888x 2 592 (e.gf 4K video)?

Not exactly this resolution (4K is more 4096*2160), but this is not my role to select the resolution instead of my users.

> I guess I can find the offending code myself.

It is there:
http://mediainfo.svn.sourceforge.net/viewvc/mediainfo/MediaInfoLib/trunk/Source/MediaInfo/File__Analyze_Streams_Finish.cpp?revision=4653&view=markup
Starting line 92

> Its the beauty of open source.

Yes :)

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