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Video Quality Studio 0.4 RC1
everwicked
post Feb 26 2005, 18:46
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Hello,

Version 0.4 RC1 of Video Quality Studio was released a couple of days ago.

Download here

Changelog:

Objective:

* Reworked VFW and DirectShow decoders. YUV (YUY2/YV12) is preferred over RGB and is converted internally to 4:4:4. This should minimise calculations and thus enhance performance greatly.
* Single precision floating-point numbers are now used instead of double precision as they provide a better balance between accuracy and speed.
* Added Structural Similarity (SSIM) Index metric. Note that it is a basic implementation and not complete with motion estimation!
* PSNR was optimised for speed and as always validated with Matlab.
* Internally re-worked GUI which should run more smoothly now.
* Added XML batch file support. For format see this example.
* Average and Standard Deviation values are written to the output.
* Misc changes.
* Known issue: Decoding of HuffYV12 (Ffdshow) videos produces bogus results when using VFW decoder!

Subjective:

* Transition between clips is smooth and does not display a white window.
* Additional error checking
* Added option to shuffle playlist
* Fixed bug that allows to restart the test if you abort it
* Easier to use GUI. Complete internal remake of the GUI, this should work more smoothly.
* Added option to allow different length videos. Defaults to disabled!
* Improved DirectShow support, fixes issues with broken/incomplete source filters, fixes issues with overlay with some decoders.
* Improved Avisynth support.
* You can select a range from reference videos instead of viewing the whole video.
* Results are shown after the test ends and you can save them in text or comma-separated formats.
* Tests: Save to / Load from XML files functionality.
* Playback is stopped when the test is aborted.
* Performing a test twice does not cause a crash.
* Aborting the test before playback does not cause a crash.
* Option to disable topmost style of video window.
* Other internal changes.
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guada 2
post Feb 26 2005, 22:37
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Hello,

I know that the Vprove 3.0 are limited concerning treatment of format.
But its wealth is exemplary.

Your interface is very pleasing, what are the different format video accepted by your software of quality video analysis?
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everwicked
post Feb 27 2005, 22:20
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Had never heard of VProve. Having a look at it now, it's got a lot more scope than my app does. But thanks for the comments.

I support two decoding interfaces, Video for Windows and DirectShow.

Formats supported:
VFW: AVI and Avisynth
Directshow: MPEG-1 off the shelf and will support MPEG-2, MPEG-4, Matroska, Vorbis etc if you have the right filters installed.




QUOTE (guada 2 @ Feb 26 2005, 09:37 PM)
Hello,

I know that the Vprove 3.0 are limited concerning treatment of format. 
But its wealth is exemplary. 
 
Your interface is very pleasing, what are the different format video accepted by your software of quality video analysis?
*
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guada 2
post Mar 1 2005, 00:04
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Thank you for these informations.
Good continuation. smile.gif
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everwicked
post Mar 9 2005, 21:43
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Joined: 2-January 02
Member No.: 870



0.4 RC3 is released to fix the hopefully last bugs and the SSIM crash. Also, in case you wanted to know, the roadmap 0.4 Final Release is:

* Crash handler with stack trace and minidump capability.
* Full blown SSIM implementation.
* Optimised Xiao implementation.
* Robust DirectShow library.

There is no release date at the moment, it will depend on my free time. If there are any features or bug fixes you can't live without, please let me know ASAP.


Changelog

Objective:
* Output filename is now updated when you select a different metric.
* SSIM does not crash and Xiao produces the right results for non-keyframes.
* Average and standard deviation calculation will skip +/-Inf values.
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