which deinterlacing filter should be used part II?

[slipknot!]

I want to encode a DVD9 to *.mkv using megui (x264). The source is interlaced:
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, Matrix : Default
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 50s 533ms
Bit rate mode : Variable
Nominal bit rate : 7 300 Kbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 29.970 fps
Standard : NTSC
Colorimetry : 4:2:0
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.705
source (http://rapidshare.com/files/267019764/MJ_BUCHAREST_sample.mkv.html)

"Analyse" chooses yadif. May be I should use yadif (bob)? Or something I don't know, I'm encoding interlaced video for the first time.

[slipknot!]

Sorry guys for starting the topic for the 2nd time. But the first one (http://forum.doom9.org/showthread.php?t=148893) was closed.

I have a DVD, I ripped it to my HDD using DVD decrypter (IFO mode, no splitting -> 1 big file named VTS_02_1.VOB). Than I took mkvmergeGUI and cut a ~50MB piece of the video and saved it to *.mkv. Why am I doing that? To show you what the source looks like. Sorry, I don't have a 100mpbs Internet connection to upload the whole source (7.26GB). That's why I only uploaded ~50MB piece.

Ramir Gonzales, yes, I'm from Russia, do you have any problems with that?

We have discovered that you have violated forum rule #6 in one of your posts (http://forum.doom9.org/showthread.php?do=showpost&postid=1314513). If you violate the forum rules 1 more times you will be suspended for 30 days.Are you kidding me?

[CWR03]

You should expect to get your suspension now, since you've actually violated several more forum rules (http://forum.doom9.org/forum-rules.htm) with this post, including 8 and 16.

[Guest]

Are you kidding me? According to the forum rules, by complaining publicly about this, you lose the right to appeal it. You were asked to clarify in the thread itself but you failed to do so within a reasonable time. Next time, discuss things in PM with the moderator and if a moderation mistake was made it will be corrected. I won't strike your thread here to demonstrate my good faith.

[manono]

Why am I doing that? To show you what the source looks like.
I, for one, have absolutely no interest in seeing an MKV sample. Extract a small section of the unprocessed source and upload it - a small piece with motion. If you don't know how, open a VOB in DGIndex, use the [ and ] buttons to isolate a small section and then File->Save Project and Demux Video. If the resulting M2V isn't too large, upload it somewhere and post the link. I much prefer MediaFire over RapidShare.

[Guest]

I've reopened the thread to allow the OP to follow manono's advice.

Another option is to just split a piece of the VOB using DGSplit. I always prefer that because it reassures me that you actually have the VOB. :)

[manono]

Oh, this had been closed? I'm sorry, I hadn't noticed. I didn't even know I could post in a closed thread. That must be one of the many powers a moderator has. :)

[Guest]

It's just plain old pure interlaced video. Use whatever deinterlacer you like best. I use PureVideo on my graphics card.

Did you want the target framerate to be 29.97 or 59.94? If the former use a single-rate deinterlacer. If the latter, use a bobbing deinterlacer.

[slipknot!]

Here is a small 5MB piece created using DGSplit and uploaded to mediafire:
the link (http://www.mediafire.com/?sharekey=8d11c5fc7c6851a1931c7453395df0251cc850d374b35241ce018c8114394287)

The whole show is 2 hours long and 7.26 GB. I want to compress it to ~1.5 GB to keep in HDD for later watching.
The most important thing is quality, time for compressing isn't very important.
Did you want the target framerate to be 29.97 or 59.94? If the former use a single-rate deinterlacer. If the latter, use a bobbing deinterlacer.
59.94 may be. I don't know which framerate will result in better quality. What are former and latter? Double framerate will need double bitrate, won't it? Can I encode it without deinterlacing (if it is posible)?

[LoRd_MuldeR]

59.94 may be. I don't know which framerate will result in better quality.

Bobbing to 59.94 fps will certainly give more fluid motion, which generally looks more pleasing.

But the bitrate requirement for the "bobbed" version will be much higher, so at lower bitrates the "single-rate" version may actually look better.

What are former and latter?

From Wiktionary:

former - First of a list of two items.

latter - relating to or being the second of two items.


Double framerate will need double bitrate, won't it?

Roughly, yes. But usually you can get away with less than double bitrate.

That's because in the "bobbed" version there's the double number of frames/pixels, but there's also more temporal redundancy (also at the higher framerate the loss is less noticeable).

Can I encode it without deinterlacing (if it is posible)?

Yes, but you must encode in interlaced mode and thus compression efficiency will suffer. Also real-time deinterlace will be needed at playback time (assuming you use a LCD screen).

If you deinterlace before encoding you can use a high quality deinterlacer that is too slow to work in real-time ...

[SomeJoe]

59.94 may be. I don't know which framerate will result in better quality.

Which framerate and manner of encoding you choose is somewhat a matter of personal preference. For me, I like to take into consideration where and how the resulting video will be watched, and on what display device.

If you intend to watch the MKV on the computer, then a deinterlaced 29.97 (single-rate deinterlaced) video or a 59.94 deinterlaced (double-rate deinterlaced) video may be preferred. Obviously, the 59.94 version will require a higher bitrate.

If you will be watching the video through some type of streaming device (such as the Popcorn Hour A110) to a standard definition TV, you may want to keep the video interlaced, since that is what the display device shows natively.

My philosophy and personal preference has always been that interlaced video should stay interlaced. Even though the encoding is less efficient than progressive, it retains the smoothness of the original video and while it requires some bitrate increase to maintain quality over an equivalent single-rate deinterlaced progressive encode, it doesn't require near as much as a double-rate deinterlaced progressive encode.

Besides, most players and display devices will deinterlace this video on playback anyway, and if you feel that the display device/player deinterlaces at good quality, you can take advantage of that by not deinterlacing prior to encoding.