Hardsubbing and Keeping The Quality...?

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Tasuki
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Hardsubbing and Keeping The Quality...?

Postby Tasuki » Sun Jul 09, 2006 5:58 pm

Any hardsubbing experts out there?

I watch anime hardsubs sometimes and I never see pixelation in their hardsubs.

When I'm hardsubbing an episode, I select the same codec it was encoded in, and the same bitrate it was encoded in, yet I still come out with a slightly lower and pixelated (during fast moving scenes) quality video. Oh and if I originally used a 700MB file, I would get a file that is around 600MB after finished encoding.

Any ideas, or tips on how I can retain (or try to) highest quality, and same file size at the end of hardcoding an episode?

Thanks to anyone who can help. Much appreciated.

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Postby Nadil » Sun Jul 09, 2006 6:29 pm

^^... I'm not an expert...a rookie myself...
but I'm satisfied with the quality of my hardsub using VirtualDubMod...
1. I change the "Color deph" to 32 bit
2. filters: HSV adjust(only add, not change anything)... and of couse a filter for subs (subtitler, textsub, etc)

3. I change the compression to XviD~ i thnk it's much better than divx^^
.. done
:)

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Postby Tasuki » Sun Jul 09, 2006 6:31 pm

Woot :w00t:, thanks Nadil. WIll give it a try.

Yes, I'm kinda hounding the forums hoping for a reply. :whistling:

If anyone has any other suggestions, please let it be known! We are all here to learn from each other. :)

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Postby gryzze » Sun Jul 09, 2006 6:38 pm

Do you encode with single-pass or two-pass?

Since you ended up with a smaller and pixelized file I get the impression you're encoding with single-pass...

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Re: Hardsubbing and Keeping The Quality...?

Postby Big China » Sun Jul 09, 2006 6:50 pm

Tasuki wrote:When I'm hardsubbing an episode, I select the same codec it was encoded in, and the same bitrate it was encoded in, yet I still come out with a slightly lower and pixelated (during fast moving scenes) quality video. Oh and if I originally used a 700MB file, I would get a file that is around 600MB after finished encoding.

Any ideas, or tips on how I can retain (or try to) highest quality, and same file size at the end of hardcoding an episode?


Yeah, it sounds to me like you're only doing a single pass encoding. I'm no expert, but on all the stuff I hard subbed (double pass) I was getting way over the original RAW file size. It takes a lot of tweaking to get it just right. One of the things you can do with virtualdubmod is preview it before committing yourself to the 3 hour or so encode. Doing this will let you know if there is any pixel effects that are distracting...

I have a 'how to' that was sent to me by eltinator when I did a few eps of H2. If I can find it, I'll email it to you.

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Postby Tasuki » Sun Jul 09, 2006 11:22 pm

Hmm, I didn't see an option for double-pass.

Would love that 'how to', didn't seen any e-mail, but would appreciate it if you could send it to me when you can.

Thanks all for your replies! Hopefully it will help in the future releases. ;)

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Postby Tasuki » Mon Jul 10, 2006 12:08 am

OK, I see why I didn't have a 2-pass option.

I was encoding in the same exact codec that was used to encode the original video and there is no option for Divx4 Low-Pass codec. Looking at Nadil's chosen codec, there is an option for 2-pass.

---

After attempting to do a 2-pass encode.. I get this error. Any help on this?

1. statsfile not found! first error
2. Cannot start video compression: second error
The operation is not supported.
(error code -1)

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Postby Tasuki » Mon Jul 10, 2006 1:33 am

Nevermind, I think I figured it out. I need to do a first pass first...

2-pass is going fine now, currently encoding... about an hour to go.

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Postby jenny99 » Mon Jul 10, 2006 1:51 am

Anyone know when i can dl VirtualDubMod software for fee

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Postby Tasuki » Mon Jul 10, 2006 1:55 am

Hi jenny99,

It is free. Here is a direct link to download it.

http://prdownloads.sourceforge.net/virt ... p?download

The "VirtualDub" software is not free, I think. But the "VirtualDubMod" software is... at least I don't notice any restrictions.

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Postby kazuki » Mon Jul 10, 2006 4:06 am

I use single pass and change the file to from Xvid to divx and I get the same file size and quality. What program are you using to get your bitrate? I use Gspot because I find it when I use divX calculator the file size comes slightly smaller not accurate at the end of encoding.

edit:
- I forgot to mention it also depends on the length of you video clip if it over 1 hour of play time I would normally use pass 2 to get looking better with less loss of pixilation.

P.s. I’m no expert, a rookie myself hopefully aNTok see this message and can input some handy advice, he’s the expert. :)

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Postby Tasuki » Mon Jul 10, 2006 4:24 am

Thanks Kaz!

Well, I've just tried a 2-pass encode. Quality is nice, but audio is out of sync, and filesize is still lower at around 637MB.

Anyway, will continue with the test runs. If everything looks good, you'll see my result in the next hardsub release. ;)

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Postby aNToK » Mon Jul 10, 2006 4:43 am

Umm... Simple way of doing it? Install AutoGK.It will also install AVISynth 2.5, VirtualDubMod, Vobsub 2.23, and the Koepi Xvid codec. During the Vobsub install, check the textsub and vobsub options and point it at virtualdubmod.exe in the subfolder of the Autogk folder in your program files.

Create a shortcut on the desktop for virtualdubmod.exe so you can find it later...

open your vid in VdubMod. Select the Textsub filter (if .srt) or the VobSub filter (if idx/sub). Choose your subtitle file in the window. Right above that, add a mild denoising filter (cleaner vids compress better).

Set your compression option to either Xvid or Divx one-pass and the quantizer at 1 (file will be a gig or two, but no worries...)

Select save and let vdubmod do it's thing.

After that, take your new file and use AutoGK to shrink it to bite-sized or larger size. Keep using the same codec as in the virtualdubmod step. All done!

(btw, the audio sync issue is probably because vdubmod doesn't like variable bitrate input. Best to rip audio from vid first and convert it to either wave or cbr mp3. Disable the current audio stream in the streams menu. Add the wave or constant br mp3 file into vdubmod via the streams menu) Don't worry about the filesize of the audio file in vdubmod. AutoGK will select and transcode the audio depending on what filesize you want.
Last edited by aNToK on Mon Jul 10, 2006 4:54 am, edited 1 time in total.
I am not obsessed. I am just very, very, very, very, very, very, very, very focussed...

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Postby aNToK » Mon Jul 10, 2006 4:48 am

btw, the above isn't exactly what I'm doing these days, but it's simple and will produce decent files.

For really nice vids at smaller bitrates, I'm finding that AVISynth and MEGui with a multi-pass H.264 codec encode is really, really nice!!!!!
I am not obsessed. I am just very, very, very, very, very, very, very, very focussed...

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Postby Tasuki » Mon Jul 10, 2006 5:44 am

Agh, thanks Antok.

You've just flipped upside-down my entire thinking and encoding steps.

I have fixed the out-of-sync, in my last encode, but filesize still remains around 600MB.

Doing one last encode and hoping it will be around 700MB size.

All-in-all, everything is looking great so far.

If it turns out incorrect this last time, I will move on ahead with your steps.

Thanks again!

-T

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Postby cowsaysmeow » Fri May 29, 2009 6:45 am

I think you should use Megui and encode in x264 rather than XVID

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Postby eye » Sun May 31, 2009 1:05 pm

cowsaysmeow wrote:I think you should use Megui and encode in x264 rather than XVID

Great idea! Why weren't you here three years ago when this thread was alive?
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Postby cowsaysmeow » Sun May 31, 2009 6:52 pm

I'm just helping, no need to be such an ass about it.

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Postby ethidda » Sun May 31, 2009 8:30 pm

cowsaysmeow wrote:I'm just helping, no need to be such an ass about it.


It's considered bad online forum etiquette to revive dead threads. And this thread was quite solidly dead and decaying. (So does that make it a zombie now?)


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