Generate Screenshots Using AvsP

DVDR Screenshots

You will need the following:

• AvsP
• DGMPGDec DGIndex

Instructions:

1. Demux the DVD with the DGIndex application and save the resulting .d2v file.
2. Open the D2V file in AvsP and refresh the picture by clicking the arrow in the bottom left or tapping F5.
3. For PAL 4:3 add the following below the MPEG2Source line: spline36resize(768,576)
4. For PAL 16:9 add: spline36resize(1024,576)
5. For NTSC 4:3 add: TFM().TDecimate() & spline36resize(640,480) (horizontal letterbox) or spline36resize(720,540) (vertical letterbox) on separate lines.
6. For NTSC 16:9 add: TFM().TDecimate() & spline36resize(854,480) on separate lines.
7. Choose an appropriate image to save and click Video -> Save image as...

Make sure that on the bottom of the window that pops up, you select the Save as type: as Portable Network Graphics (*.png). Choose a location to save the file and change the name if you wish. Click save then rinse and repeat!. Generally three or four screenshots is plenty.


Encode Screenshots

You will need the following:

• AvsP
• ffms2 (Download the one simply labeled FFmpegSource 2.xx and put the ffms2.dll & FFMS2.avsi files in the AVISynth plugins folder, usually: C:\Program Files (x86)\AviSynth 2.5\plugins for most computers).

Instructions:

1. Drag the AVI or MKV file into AvsP.
2. Click the Video tab up top then click Refresh preview or tap F5.
3. Use the bar on the bottom to scroll to a suitable image to use for your screenshot.
4. Click on the Video tab again then click Save image as...

Make sure that on the bottom of the window that pops up, you select the Save as type: as Portable Network Graphics (*.png). Choose a location to save the file and change the name if you wish. Click save then rinse and repeat!. Generally three or four screenshots is plenty, especially when you're adding source vs. encode screenshots as well.

For taking screenshots of DVD x264 encodes (which have a aspect ratio modifier) paste this -http://pastebin.com/raw.php?i=tdkFCZVK - into AVSP instead, change the name to the one you're taking screenshots of, and then follow steps 2-4.


Source vs. Encode Screenshots

You will need the following:

• AvsP
• ffms2 (Download the one simply labeled FFmpegSource 2.xx and put the ffms2.dll & FFMS2.avsi files in the AVISynth plugins folder, usually: C:\Program Files (x86)\AviSynth 2.5\plugins for most computers).
• The AVS, D2V & VIDEO_TS source files you used while encoding.
• The MKV file generated during the encoding process.

Instructions:

1. If using a DVD source, paste this code into an empty AvsP script page.
2. If using a Blu-ray source, paste this code into the AvsP script page instead.
3. Replace source.avs with the full path to your AVS file and encode.mkv with the full path to your encoded file.
4. Click Video -> Refresh preview or tap F5. This can take a moment to process.
5. Choose a good frame with little blurring. Ensure it is a source frame (ffinfo will tag it as "source") and save the image; click Video -> Save image as....
6. Ensure the file type is set to Portable Network Graphics (*.png) and click save.
7. Next, press the right arrow key once to shift to the same frame from the encode and repeat the saving process. If using a blu-ray source, it is recommended to only use frames marked as 'B' (in the upper right corner) for the encode screenshots. It is also a good idea to save screenshots as source#.png and encode#.png where # is a different number for each set being compared. This makes it easy to remember which images are which and makes uploading easier as well.
8. Now all you need to do is upload these images to your favourite image host. We recommend Screenshot Comparison, ImageBam, ImgBox or ImageShack as hosts which will not resize high definition images.

The script takes your source file and the encoded file and interleaves them together displaying each frame of the video stream twice. The ffinfo option displays various technical information about each frame and spline36resize is used to display the video at the correct aspect ratio to enable accurate screenshots.