Blocks In Ripping [Archive]

dictator

10th July 2010, 09:43

Hi Guys..
Basically When I Rip A Movie,I Am Getting Blocks Though I Use Deblock(11)..Please Help Me Out.CODECS I Use Are (MovieName)-Xvid-MP3-1CD

Forteen88

10th July 2010, 11:25

If you mean that it's blocky after doing the reencode, maybe the reencode is too low bitrate? Do you rip with DVDFab? Use x264 and AAC, they're much better than the old ASP XviD/DivX & MP3 (although you might use it for compatibility-reasons?).

7ekno

10th July 2010, 14:39

Encoder / GUI used?!?

Settings for XviD used?!?

Why deblock a relatively clean (assuming DVD) source?!?

7ek

dictator

11th July 2010, 04:36

Yahh Guys I Use MeGUI For Ripping..As X264 Is 2Pass I Am Not Uisng It.It Is Taking Lot Of Time.So Going For Xvid...

I Get Bitrate Of 635Kbps For 1CD I Think Its A Good Bitrate...

How Can I Overcome The Blocks

manono

11th July 2010, 08:36

I Get Bitrate Of 635Kbps For 1CD I Think Its A Good Bitrate...

How Can I Overcome The Blocks
If 635 is the bitrate, and if you're getting macroblocking, then obviously it's not "A Good Bitrate". Raise the bitrate. A lot.

And thinking that using Deblock will control the blocking is faulty thinking. It works on your source (which probably doesn't need it) and not on the output.
As X264 Is 2Pass...
Wrong again.

7ekno

11th July 2010, 11:53

If that's your only reason for not using x264, feed x264 a fast preset with --crf 25 (one pass) and watch it work ;)

At 635kbps, expect blocks with XviD with 1-pass (and as above, DEBLOCKING the SOURCE will do nothing to prevent it) ...

You need 2-pass XviD to have any chance at decent quality ;)

7ek

Forteen88

11th July 2010, 13:19

If that's your only reason for not using x264, feed x264 a fast preset with --crf 25 (one pass) and watch it work ;)Yeah, but at that low bitrate I'd recommend him to use a veryslow preset (with --crf 25 (which is one pass)), it's not that slow for its much better quality. I'd use RemoveGrain() also, for that bitrate-starved reencode.

Didée

11th July 2010, 16:41

I Get Bitrate Of 635Kbps For 1CD I Think Its A Good Bitrate...
That was back in the days when everyone was exited that the pictures were moving, and even in color! Sometimes it was even possible to reckognize the actresses and actors!

Today, the limitation of 1CD rips has been overcome, and for quite some time so. Hard Disk storage space has become cheap, DVD media are more common than CD media.

Over the thumb, you seem to have a movie length of roughly 2.5 hours. You can't fit that on 1 CD with good quality, and surely not with Xvid.

Welcome in the 21st century.

dictator

15th July 2010, 05:24

Ohh Nice Of You Guys.. Does X264 Give More Clarity Than Xvid

dictator

15th July 2010, 05:27

Yeah, but at that low bitrate I'd recommend him to use a veryslow preset (with --crf 25 (which is one pass)), it's not that slow for its much better quality. I'd use RemoveGrain() also, for that bitrate-starved reencode.

Cool Dude It Worked:thanks:

dictator

15th July 2010, 05:35

Ok Guys My Aim Is To Rip A Movie Of RunTime 2HRS30MINS Into 1CD With Maximum Quality Which I Can..I Knew Little About Filters.So You Guys Suugest Some Filters To Do It.

Scan Type Is MostlyInterlaced...

Guest

15th July 2010, 05:59

If you stop typing with Initial Caps, I might consider responding.

dictator

16th July 2010, 04:43

Ok cool as per your wish i have changed it,now can you help me out..

Ok guys my aim is to rip a movie of Runtime 2HRS30MINS into 1CD with maximum quality which i can..I knew little about filters.So you guys sugest some filters to do it.
Scantype ss Mostlyinterlaced...

Guest

16th July 2010, 05:02

Scantype ss Mostlyinterlaced... Oops, there you go again.

A CD is 700Mbytes. Leaving aside the audio, then the bitrate will be about:

700,000 * 8 / 150 * 60 = 622 kbits/sec

Actually it will be lower, because you need to leave room for the audio. Let's say you'll have around 500 kbits/sec.

Now consider that a DVD typically has around 5000 kbits/sec, so you are looking for a 10-1 reduction. That is very ambitious. I assume you have a DVD. If you have HD material then forget it.

So to achieve decent quality in my opinion you will need to encode it in AVC, using x264.exe. There are one-pass modes for x264.exe if you are concerned about time.

Don't suppose that filtering magically make rips high quality. You can improve compressibility but at the expense of detail. As you've been told, that bitrate is just too low to achieve a high-quality result. It may look OK with x264.exe, however, depending upon how critical you are.

What is the DVD that you want to rip? You'll need to analyze the source video in detail to know the best way to process it. Your knowledge level makes me suspect that you don't really know the nature of the video. The best thing would be to post a link to a short unprocessed source sample, so that we may advise you properly.

mariush

16th July 2010, 05:24

2h 30 min = 150 min = 9000 seconds

1 CD = 703 MB , you'll need about 3 MB for the container that holds the video and audio so let's say you have 700 MB for video+audio.

700 MB = 716.800 KB = 734003200 Bytes * 8 / 1000 = 5.872.025 kilobit

So your movie must have 5.872.025 / 9000 seconds = 652.44 kbps for BOTH video and AUDIO.

If you recompress the audio to AAC 96 kbps, then you'll end up with 652-96 = 556 kbps for video

To be on the safe side, you should use 550kbps for video.

If you're talking about DVD, then you should also deinterlace and resize the video so that maximum width is about 640 pixels, then encode with x264 using 2 pass. I would also use about AAC at 80kbps and increase the video bitrate with the difference (+16 kbps)

dictator

16th July 2010, 10:44

Oops, there you go again.

A CD is 700Mbytes. Leaving aside the audio, then the bitrate will be about:

700,000 * 8 / 150 * 60 = 622 kbits/sec

Actually it will be lower, because you need to leave room for the audio. Let's say you'll have around 500 kbits/sec.

Now consider that a DVD typically has around 5000 kbits/sec, so you are looking for a 10-1 reduction. That is very ambitious. I assume you have a DVD. If you have HD material then forget it.

So to achieve decent quality in my opinion you will need to encode it in AVC, using x264.exe. There are one-pass modes for x264.exe if you are concerned about time.

Don't suppose that filtering magically make rips high quality. You can improve compressibility but at the expense of detail. As you've been told, that bitrate is just too low to achieve a high-quality result. It may look OK with x264.exe, however, depending upon how critical you are.

What is the DVD that you want to rip? You'll need to analyze the source video in detail to know the best way to process it. Your knowledge level makes me suspect that you don't really know the nature of the video. The best thing would be to post a link to a short unprocessed source sample, so that we may advise you properly.

Thanks bro.yahh i have analaysed the video using meGUI.
it says tht Sourcetype:-Hybrid film/interlaced mostly interlaced
fieldorder:-top field first
Deinterlacer:-it left it blank

dictator

16th July 2010, 10:47

manono

16th July 2010, 12:27

What is the DVD that you want to rip? You'll need to analyze the source video in detail to know the best way to process it. Your knowledge level makes me suspect that you don't really know the nature of the video. The best thing would be to post a link to a short unprocessed source sample, so that we may advise you properly.
Did you read and understand what he wrote, dictator? Don't rely on what MeGUI tells you about it. If you don't know how to analyze it yourself, cut out a 10 second portion from the source and upload it to some place like MediaFire or Sendspace and give us the link so we can have a look.

Didée

16th July 2010, 22:22

If both "FILM"=true and "interlaced"=true, then the worst-case scenario is: the source is a fieldblended (PAL) Bollywood movie.

nibus

18th July 2010, 05:32

For compressibility try using TTempSmooth() -

http://avisynth.org.ru/docs/english/externalfilters/ttempSmooth.htm

It stabilizes and smooths the non-moving parts of the picture and in many cases can really help to reduce the bitrate needed. Plus it won't noticeably hurt detail. Try a fairly low setting like this:

TTempSmooth(maxr=7, strength=1)

"maxr" is the most accurate at 7, but if you want to speed things up a bit you can lower it to 1. You can also raise the strength depending on how noisy your source is and your required bitrate. I've been able to reduce some 720p encodes by over 1gb just by including this filter, and without any quality loss, and in fact it looks better because the background is more stable.

For your audio you might consider using AAC HE instead of LC, and go down to a bitrate around 48kbps to save space for your video.

Sharktooth

19th July 2010, 02:28

for bitrates as low as 48Kbps and lower HE+PS is recommended

nibus

19th July 2010, 05:16

for bitrates as low as 48Kbps and lower HE+PS is recommended

Right. Usually with eac3to setting a quality of .15-20 with movies will put you somewhere in that range. Eac3to will set it to HE+PS automatically.

Adub

20th July 2010, 16:42

Yeah, but the OP is using MeGUI, which doesn't use EAC3to by default for audio encoding.