Question on de-interlace and aspect ratio

[rurimoon]

I am trying to convert my DV avi to x264 for view in PC only. My AVI source is 720x540 SD NTSC captured with WinDV. I use MeGUI and it give me the following avscript

AVISource("F:\b.avi", audio=false)
edeintted = AssumeBFF().SeparateFields().SelectEven().EEDI2(fi eld=-1)
tdeintted = TDeint(edeint=edeintted,order=0)
tfm(order=0,clip2=tdeintted).tdecimate(hybrid=3)
#crop
#resize
Undot() # Minimal Noise

The problem with this is it lost half of info by only select even frame. The movie will only be view in PC. So I am trying to Bob,
AVISource("F:\b.avi", audio=false)
AssumeBFF()
SeparateFields()
EEDI2(field=2)
Undot()

I am confuse if I should also add TDeint(order=0) and tfm to it as I am not sure what these 2 filter does on de-interlace. Also, the output movie's aspect ratio from the above script seems wrong (different from the source) eventhough I didn't include any crop or resize function. It give me 720x480 at the end...

Can anyone help me if there are any more filter that I should use?

[poisondeathray]

Are you planning on resizing?

720w 480h gives 1.5 aspect ratio (square pixels), but DV is 4/3 or 1.333.

You can encode anamorphic in the video stream (set the sar) or just set the container to signal the aspect ratio later (YAMB for .mp4 or MKVmergeGUI for .mkv)

To set the aspect ratio at the stream level, enter "--sar 8:9" (without the quotes) in the commandline box. This will not be shown in the preview window

How did I get 8:9 ?

DAR=FARxSAR

Display Aspect Ratio = Frame Aspect Ratio x Sample Aspect Ratio (the sample aspect ratio can be called pixel aspect ratio as well)

4/3 = 720/480 * 8/9 which is the DAR that you want to preserve (4/3)(assuming no resizing and keeping the 720w 480h frame dimension)

For deinterlacing, there are many choices. For fast, decent quality bobbing you can try yadif(mode=1,order=0) for bobbing,bff. For very high quality , very slow (~15x slower), you can try TempGaussMC_beta1()

Have a look at the bob deinterlacer comparison:

https://forum.videohelp.com/images/guides/p1934885/stockholma_0-520_q3_yadif_mvbobmod_t...mca4_tdtmm.avi

[jagabo]

https://forum.videohelp.com/images/guides/p1934885/stockholma_0-520_q3_yadif_mvbobmod_tgmca4_tdtmm.avi

Do you know where one can get the original interlaced "Stockholm" video?

[poisondeathray]

https://forum.videohelp.com/images/guides/p1934885/stockholma_0-520_q3_yadif_mvbobmod_tgmca4_tdtmm.avi

Do you know where one can get the original interlaced "Stockholm" video?

I've been looking for it too; I got that from Soopafresh who posted that in another thread; and he said he didn't know the original source either.

@rurimoon - I forgot to mention that a very easy and common method is just to resize to 640x480 using square pixels, so the aspect ratio is then 4/3, and you don't have to worry about SAR,PAR,FAR, or aspect ratio signalling,etc...