XViD Quantizer Parser (XvidQP)

Description

XvidQP is a tool that will give you a hint on the quality of an encoded Xvid MPEG-4 AVI without requiring any stats file. It is intended to be easy to use, yet very complete in it's analysis process to provide the end-user with as much quantization statistics as possible.

Features

XvidQP can:

• Parse quantization values of I-Frames and P-Frames separately for an Xvid AVI;
• Get statistics such as maximum, minimum and average quantizer value of whole clip;
• Get average quantizer value of I-Frames and P-Frames separately;
• Get graphical histogram distribution of global clip quantizers;
• Get textual/graphical histogram distribution of quantizers for I-Frames and P-Frames separately;
• Get graphical time-based distribution of quants for I/P-Frames;
• Get minimum and maximum frame sizes of all frames, I-Frames and P-Frames
• Detect "critical frames" according to a user-specified maximum quantizer tolerance;
• Do ranged analysis (ignore parts of a clip for analysis);
• Save/Load reports of analysis so you can share with friends or consult faster at a later time.

Upcoming Features

XvidQP will:

• Support more builds (one day...)
• Do more stats...

Downloads

Latest Version

XvidQP Beta3 binary (Win32)
XvidQP Beta3 source (VC++ 6)

Previous versions

XvidQP Beta2 binary (Win32)
XvidQP Beta2 source (VC++ 6)

XvidQP Beta1 binary (Win32)
XvidQP Beta1 source (VC++ 6)

Screenshots

Main Dialog
Histogram Dialog
Time-Based Dialog
Critical Frames Dialog

Limitations

The Xvid Quantizer Parser will NOT work properly with all Xvid builds that have implemented B-Frames, whether they are used or not for the encoding process. The reason for this is that we parse the quantization values byte-wise in each frame's binary data. Therefore, ANY difference in headers results in incorrect quantization value being obtained from the frame. We are currently looking to support these builds. Symptoms that you used an unsupported build include quantization values above 32 (sometimes up to 255).

Copyrights

Part of this tool uses Avery Lee's Virtualdub source code. Thanks to him for such a great application.
XvidQP is distributed under the GNU General Public License.

XvidQP Forum | XvidQP's Project Page | XvidQP's CVS Repository