Page Contents

• Frame Interpolation with RIFE • Chroma Bleed in ANIME video • Removing Aliasing from Progressive video (Jagged edging) • IVTC 3:2 Pulldown of MPEG2 in MKV • PSF Cleanup (VOB) • Anime aliasing and frame blending • Removing duplicates from a Bluray rip of an old film • Correcting a 59.94 capture back to 29.97 • Correcting hard-coded Wrong field Order • Dealing with WMVs • Old 320x240 Digital Camera Video Files • Detecting Duplicated Frames

Frame Interpolation with RIFE

Note: RIFE only operates on a 64bit system with the latest graphic cards. RIFE is a high-quality frame interpolation filter, meaning it will smooth out videos by re/creating frames that are missing, such as after duplicated or blended frames have been removed by other filters, for example when processing cine film that has been captured by a video camera (telecine). It will interpolate between two frames and create an in- between frame. This results in smoother video. The RIFE filter comprises two parts: the filter files themselves, which are included in the plugins folder in the above zip package, and the RIFE models, which are a 1GB collection of files and folders which detail the various models. I haven’t included the models folder in the above download because of it’s size; if you would like to use RIFE: • go to the Github RIFE page • click on the “Latest” button on the right • click on the link to the models to download the zipped models folder. Assuming you have set up AVISynth as I have described above, the models folder needs to be placed in the avisynth+\plugins64+ folder: The actual model number to be used in the AVISynth script is shown against the folder number is shown lower down on the Github page linked-to above. For example, folder 4.6 (True) is model number 24. Note: only models using 4.1 and above will allow adjustment/manual setting of the frame rate. Lower models will only double the original framerate. A typical RIFE script would look something like this, with the user-variables in blue: v=ffms2("H:\Magix Info\Jak\Deinterlaced 00059.m2ts") a=LWLibavAudioSource("H:\Magix Info\Jak\Deinterlaced 00059.m2ts") AudioDub(v,a) # RIFE only works with RGB floats z_ConvertFormat(pixel_type="RGBPS", colorspace_op="709:709:709:l=>rgb:709:709:f") # motion interpolate to 50 fps Rife(gpu_thread=1, model=11, fps_num=50000, fps_den=1000, sc=true, sc_threshold=0.12) # back to YV12 z_ConvertFormat(pixel_type="YUV420P8", colorspace_op="rgb:709:709:f=>709:709:709:l")

RIFE Notes

• If you find that RIFE is not interpolating during rapid panning, try setting the “sc=” to false, or if a scene change is in play, use sc1=True. Sc=True leaves duplicates at the scene change. Sc1=True blends the duplicate with the first frame of the new scene.

Chroma Bleed in ANIME video

https://forum.videohelp.com/threads/416462-How-to- remove-this-interlace-blending-chroma-bleed

Removing Aliasing from Progressive video

(Jagged edging)

https://forum.videohelp.com/threads/416435-Which- copy-looks-better-to-you-Attachments#post2756412 VHS Capture of DVD restoration (file 2) https://forum.videohelp.com/threads/416923-De- Interlacing-another-DVD-from-collection Another capture (file 1): https://forum.videohelp.com/threads/416904-De- Interlacing-DVD-and-changing-25FPS-To-24FPS

IVTC 3:2 Pulldown of MPEG2 in MKV

Ref: Davexnet https://forum.videohelp.com/threads/404621- MakeMKV/page2#post2762453 aud=ffaudiosource("D:\VH\Chris Hooper\A1_t00.mkv",track=-1) vid=ffvideosource("D:\VH\Chris Hooper\A1_t00.mkv", track=-1, seekmode=1,fpsnum=30000,fpsden=1001) audiodub(vid,aud) tfm().tdecimate() Prefetch(24)

PSF Cleanup (VOB)

Ref Davexnet v=ffms2("D:\VH\Akuma786\30Dec\VTS_01_1.VOB") a=LWLibavAudioSource("D:\VH\Akuma786\30Dec\V TS_01_1.VOB") AudioDub(v,a) qtgmc(inputtype=2,preset="medium") crop(0,124,-0,-122) depansafe(dxmax=4,dymax=4) crop(2,6,-4,-8)

Anime aliasing and frame blending

https://forum.videohelp.com/threads/417775- Difficult-low-quality-telecined-source

Removing duplicates from a Bluray rip of an

old film

https://forum.videohelp.com/threads/418061- Solutions-for-a-film-with-duplicate-frames-without- predictable-cycle#post2772415 Uses TDecimate(cycle=25,cycleR=3) to remove dupes and return frame rate back to original of 22fps.

Correcting a 59.94 capture back to 29.97

https://forum.videohelp.com/threads/418065- Converting-wrongly-captured-59-94fps-to-29- 97fps#post2772420 sample file and the AVISynth code is in this post.

Correcting hard-coded Wrong field Order

https://forum.videohelp.com/threads/418758-Is-it- worth-it-recapturing-videos/page3#post2781386 Sample file in post #71.

Dealing with WMVs

https://forum.videohelp.com/threads/419043- Avisynth-and-WMV-s-keeping-A-V-in-sync

Old 320x240 Digital Camera Video Files

Such small files, when expanded to normal size for editing, exhibit pronounced jaggies. They can be significantly improved with AVISynth and VDub2. Here are some “before” and “after” shots: This is the AVISynth code: v=ffms2("file.MOV") a=LWlibavAudioSource("file.MOV") AudioDub(v,a) ConvertToYV16() Spline16Resize(400,300) santiagmod(3,3) #reduce burned-in jaggies QTGMC(inputtype=2) #repair badly deinterlaced video ie burned-in jaggies converttoyv12() lsfmod(strength=100,Smode = 3) #sharpen Spline64Resize(768,576) dehalo_alpha() #reduce halo effects on edges #RIFE uses motion interpolation to increase framerate. z_ConvertFormat(pixel_type="RGBPS", colorspace_op="709:709:709:l=>rgb:709:709:f") # RIFE only works with RGB floats Rife(gpu_thread=1, model=11, fps_num=25000, fps_den=1000, sc=true, sc_threshold=0.12) # motion interpolate to 25 fps z_ConvertFormat(pixel_type="YUV420P8", colorspace_op="rgb:709:709:f=>709:709:709:l") # back to YV12 VDub2 filters applied on the AVS file: Camcorder Color Denoise (CCD); maximum strength Sharpen: maximum strength Here are the results on my Youtube channel: https://www.youtube.com/watch?v=uU-qISwAJo8

Detecting Duplicated Frames

One of the bugbears of analogue video capture is dropped frames. Dropped frames themselves are hard to detect but most digitisers will insert a duplicate frame (ie a copy of the previous frame) when a frame doesn’t appear at the correct time. The duplicated frames count can then be used as a guide to the number of frames that have been dropped. The DupMC function is very good at detecting duplicated frames. DupMC uses VDub to produce a TXT file which shows the % difference between adjacent frames, thereby allowing detection of duplicates ie 0% difference. Microsoft Excel can be used to tabulate the results as described below, or you can simply search the TXT file for “0.0000” to find the duplicates. DupMC only works with 8-bit so if you have a higher bit-depth video, you’ll need to convert it down to 8- bit. AVISynth example script (also here as a download): AVISource("H:\Videos\holiday1987.avi") converttoyv12() DupMC(log="H:\Videos\holiday1987.avi") #this is the text file that will be generated 1. Open this script in VDub, then do a "File>Run video analysis pass" to generate a TXT data file. 2. Close VDub. 3. Open the text file in Excel (use "all file types" to reveal the TXT file). The Text Import Wizard will open. 4. Step 1: Choose "Delimited" then Next 5. Step 2: Untick "Tab". Tick "Other" and type in the = sign then Next 6. Step 3: no changes, click Finish 7. With the file open in Excel, delete the first line then select all. 8. Data>Text to columns. At the warning, ignore it and click OK. 9. Drag the A column edge to the right so you can see the full column info 10. Sort on the seconds difference column (column B). The duplicated frames will be those with Zero % difference. View them in VDub by opening the file, hit CTRL+G, then type in the frame and hit Enter.