AutoGK + Divx Pro 6.8.5

[eskro]

Hello guys!

I bought the Divx Pro codec to use with AutoGK
So i could get the best Quality Rips when backing up my DVDs to 700mb Divx files!

but i wanna know how can i set my Divx file to have 29.70 fps?

Cuz my source DVD has 29.70 fps but
when i finish conveting it to Divx using AutoGK it ends-up having 23.976 fps



Any Idea? thanx alot!!!

[guns1inger]

Are you sure that the DVD is 29.970 fps ? Most NTSC DVD movies are 23.976 fps, and use pulldown flags to tell the player to repeat certain frames to get to 29.970 fps. Some software players obey this flag (virtualdub, I believe does this). AutoGK is pretty good at getting the right framerate, so I would be surprised if it was wrong in this instance. Can you post a mediainfo tree output of the source file in question ?

[eskro]

General
Complete name : D:\Data\Videos\_________\MAMBO_ITALIANO\VIDEO_TS\V TS_01_1.VOB
Format : MPEG-PS
File size : 1 024 MiB
Duration : 17mn 30s
Overall bit rate : 8 179 Kbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings, BVOP : Yes
Format settings, Matrix : Default
Duration : 17mn 30s
Bit rate mode : Variable
Bit rate : 7 662 Kbps
Nominal bit rate : 8 500 Kbps
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 2.35:1
Frame rate : 29.970 fps
Standard : NTSC
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Interlaced
Scan order : Top Field First
Bits/(Pixel*Frame) : 0.740
Stream size : 959 MiB (94%)

Audio
ID : 128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Duration : 17mn 30s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Stream size : 24.0 MiB (2%)

[guns1inger]

My guess would be that AutoGK has determined that it can IVTC the footage back to 23.976 fps, and is attempting to do that. If it can, that may produce the better outcome.

Otherwise, you can override this by pressing ctrl+F9 to open the 'hidden' or advanced settings page, and select 29.970 fps as the framerate to use.

[eskro]

My guess would be that AutoGK has determined that it can IVTC the footage back to 23.976 fps, and is attempting to do that. If it can, that may produce the better outcome.

Otherwise, you can override this by pressing ctrl+F9 to open the 'hidden' or advanced settings page, and select 29.970 fps as the framerate to use.

this CTRL+9 hidden options aren't for XVIDs only?

and what about Video Bitrate...
i'll leave that to AutoGK?

and also, Video Resolution....
my DVD is 720x480....
so my Divx should be?



thanx

[guns1inger]

For the highest quality, assuming you are happy to have bigger files, set a width of 720 and let AutoGK take care of the height. It will crop the video to remove the black bars and resize to 1:1 Pixel Aspect Ratio. The source is 2.35, so you will get a file that is approx 720 x 304 pixels.

The hidden settings affect any encoding - Divx or Xvid

[eskro]

For the highest quality, assuming you are happy to have bigger files, set a width of 720 and let AutoGK take care of the height. you will get a file that is approx 720 x 304 pixels.

The hidden settings affect any encoding - Divx or Xvid

thanks

So in this case,
if i really want the file to be 700mb?
Best Video Resolution would be?

note that i often watch my ripped movies on my home Divx player....
would a 23.976 fps divx file play on my home ntsc Divx player?

[guns1inger]

Yes, a 23.976 fps film will play fine. I would probably encode one VOB at 29.970 and then again at 23.976 just to see if one is better than the other. 23.976 will give you better bang for your buck picture wise.

700 MB is too small for a movie with any quality, IMO. You can easily tell AutoGK to crush the life out of it to make it fit, but you will have to drop the resolution down to 620 or so for width. The smaller you make it, the more your player has to blow it back up again, and the crappier it will look. Why go for 700 MB ?

[eskro]

Why go for 700 MB ?

i burn them to CD's
look this example of encoding using AutoGK:

General
Complete name : C:\Documents and Settings\eSkRo\Bureau\700mb.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 701 MiB
Duration : 1h 28mn
Overall bit rate : 1 108 Kbps
Writing application : VirtualDubMod 1.5.4.1 (build 2178/release)
Writing library : VirtualDubMod build 2178/release

Video
ID : 0
Format : MPEG-4 Visual
Format settings, BVOP : Yes
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Muxing mode : Packed bitstream
Codec ID : DX50
Codec ID/Hint : DivX 5
Duration : 1h 28mn
Bit rate : 984 Kbps
Width : 448 pixels
Height : 256 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.358
Stream size : 623 MiB (89%)
Writing library : DivX 6.8.5 (UTC 2009-08-20)

Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Format_Settings_Mode : Joint stereo
Format_Settings_ModeExtension : MS Stereo
Codec ID : 55
Codec ID/Hint : MP3
Duration : 1h 28mn
Bit rate mode : Variable
Bit rate : 111 Kbps
Nominal bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Stream size : 69.9 MiB (10%)
Alignment : Aligned on interleaves
Interleave, duration : 24 ms (0.58 video frame)
Interleave, preload duration : 534 ms
Writing library : LAME3.98r
Encoding settings : -m j -V 4 -q 2 -lowpass 17 --abr 128



It has outputted a resolution of 448x256 pixel...
option was set to AUTO,,, seems fine?

[guns1inger]

Personally, I think it it looks like crap. That is postage stamp resolution. If you are happy with it, go for it. You're the one who has to live with it. Me ? I gave up burning to CDs as soon as DVDs became cost effective because the quality of something that low in resolution, watched on any half decent television, is (to me, at least) unbearable.

But ultimately, it is your call. Like I said, you are the one watching them, not me. If I use Xvid (rare, nowadays) I go for minimum 640 width and minimum 1400 MB in size. Mostly I use H264 instead, and encode at around 10MB per 10 minutes (i.e. 55 minute TV program gets 550 MB) and I get reasonable quality on the TV screen.

[eskro]

ok,,

those results were generated by AutoGK automatically,,,,

only thing i've set manually is the custom 700mb thing.....

Even tho its crap

AutoGK did the job correctly?

[guns1inger]

If you left it on auto then yep. You can override the resolution by putting your own width preference in and AutoGK will adjust the bitrate/quality setting to suit

[eskro]

If you left it on auto then yep. You can override the resolution by putting your own width preference in and AutoGK will adjust the bitrate/quality setting to suit

ok then... if i understand correct...



if i set output size to Custom --> 1400mb

Fixed width to --> 720

Audio to --> VBR mp3 128Kbps



i'll get an amazing Quality for my Divx file?



thanks a bunch for helping!

[guns1inger]

Nope. Divx/Xvid doesn't do amazing. But it will be far better than what you have above.

Personal opinion, for what little it may be worth;

Divx/Xvid were not designed to produce high quality video. They were designed to produce acceptable quality at lower bitrates than the competition. At they they succeed, most of the time. They have inherent flaws that come from the way they compress the image data. Even with high bitrates, these flaws are apparent. You can get almost DVD quality from Divx/Xvid, but you need bitrates (and therefore file sizes) that are far higher than the download crowd like to play with. In fact, even taking a standard movie to the maximum 2GB that most standalone players stop at you may not get the full quality of the source. The lower the bitrate, the lower the quality.

So ultimately it is a game of compromise. Best bang for buck. That may mean higher bitrates, or lower resolutions, or changing to a better codec (and therefore altering your playback equipment). And because every movie or TV show has different requirements, and every viewer differs in their threshold for quality, it is a personal choice. It also needs experimentation, so that you can find the right combination that suits your own needs, and the material you are working with.

So try a few different combinations. If you find that you are happy with the smaller file sizes, or somewhere in between, go for it. If you find that you prefer the larger file sizes because the quality is higher, that's fine too. Or you may find that you start to discern between your sources, and give some files more quality because they are something you will come back to, and others lower settings because they will be a one-off watch and then into the cupboard for good.

It's your collection, so it's got to be done your way in the long run.

[eskro]

ok thanks a bunch guns1inger!!!!

I'll try different settings and see from there!

I appreciate the time u took to answer my questions!

I really appreciate it!