Gknot newbie...... FlaskMpeg somewhat regular

[twd]

Hi doom9 users, Alexander,

I too, have waited the long 5 days to post this and have done my forums searching, tutorial reading etc...

I am on an AMD Athlon 900MHz.

I have used FlaskMpeg for all my conversions(DVD->AVI) in the past,and am always looking for other, better, faster ways to do the deed.

I have been searching the forums...found a lot of people complaining, and I've been in their shoes trying to learn how to accomplish the 'impossible'. But to diss this site like they do in my opinion is not proving themselves worthy of receiving any help.

People also talk a lot about Gknot and how if you learn to use it you will find it to be a better program than FlaskMpeg due to the quality of the output files and how it is easier to navigate around.

I decided to try Gknot a couple of weeks ago with the help of the forums and the official Gknot webpage for the tutorials and essential programs.

I have ran into only a couple of issues with the program. First question I guess would be is Gknot a faster way to complete the conversion? How long do the usual 2 hour movies take? FlaskMpeg takes me around 3.5 hours to complete. I would still take Gknot over FlaskMpeg if it were around an hour longer or that because of the promising quality of output.

I am pretty sure my conversions took around 5 hours total, maybe.. maybe not considering I left it over night. I know Gknot saves a log file, where and which one it is Im not so sure.

I really like the compression test, how you are able to choose the best output resolution to get the best looking output file.

My major problem was that in the tutorial you are told to write down the audio delay, which I did and then it never tells you where to put it. I figure you put it in the final step where you load the files into Virtual Dub. I converted Clockwork Orange and had a delay of 89ms. I deleted the -83ms and put -89ms into the audio delay where I am pretty sure it was supposed to go.

:confused: I was wrong because the audio was out of sync by around 3 seconds. The picture was beautiful though.

So....if someone could answer my questions... or has advice on maybe newer or better and faster ways of doing things I would be most appreciative.
twd

This site is the motherload of very precious information,

doom9!:p

[nFury8]

Hi there, allow me to take a stab at some of your queries. I'm sure the more seasoned veterans here have just as much knowledge and insight to throw at it, so...
First question I guess would be is Gknot a faster way to complete the conversion?
As a front-end tool, it certainly helps speed things up in the preparation of your encoding. This will become apparent once you get the hang of it. In this respect it is the most elegant tool for the job. I once tried FlaskMpeg about a year ago and when I stumbled upon Gknot I never looked back. And you're right, the compressibility test is one of its most impressive features in helping you decide the final output features of your movie. If you were a Jedi, Gknot is your lightsaber.
How long do the usual 2 hour movies take?
Well, just to give you an idea, on my ageing 1gig Athlon,1gig ram, the usual 2-hour plus movie takes me about 6 hours for a full 2-pass encode, without de-noising filters, without audio because I always use AC3 and just mux it in the end. I know lots of doom9 denizens have way more powerful rigs, so encoding would be a lot faster for them.
My major problem was that in the tutorial you are told to write down the audio delay, which I did and then it never tells you where to put it. I figure you put it in the final step where you load the files into Virtual Dub. I converted Clockwork Orange and had a delay of 89ms. I deleted the -83ms and put -89ms into the audio delay where I am pretty sure it was supposed to go.
I always used Nandub and not Vdub to mux my audio and never had any asynch problems. Well, that was before I started using VdubMod anyway, where I can just mux my audio in VdubMod like in Nandub. Just make sure to take care of your audio delay value, if your audio source shows a negative sign then just add the negative sign in your final step as well, or otherwise.

Cheers

[killingspree]

hi and welcome to the forum
ok most of your questions have been answered already, just a few things to add:

Originally posted by twd


I have ran into only a couple of issues with the program. First question I guess would be is Gknot a faster way to complete the conversion? How long do the usual 2 hour movies take? FlaskMpeg takes me around 3.5 hours to complete. I would still take Gknot over FlaskMpeg if it were around an hour longer or that because of the promising quality of output.

well the sopped of course depends on the machine you are using, along with the source and the filters and last but not least the encoding method (1 pass vs 2 pass)
now i asume that you were using one pass mode in flask. in gordianknot you usually use 2 pass mode. this will take close to twice the time of a one pass encoding, but will increase the quality a lot. so if it took you around 3.5 hours for a 1 pass in flask it will probably take 6 to 7 hours in gknot. still, i can reassure you it is definitely worth the extra time.


My major problem was that in the tutorial you are told to write down the audio delay, which I did and then it never tells you where to put it. I figure you put it in the final step where you load the files into Virtual Dub. I converted Clockwork Orange and had a delay of 89ms. I deleted the -83ms and put -89ms into the audio delay where I am pretty sure it was supposed to go.

:confused: I was wrong because the audio was out of sync by around 3 seconds. The picture was beautiful though.


ok, just wanted to note that you can also add the audio conversation, including the porcess of muxing (putting audio and video together) in gknot. after you've klicked 'save & encode! you get to a dialog with a few tabs. the divx5 tab is the one that you see first. if you click the audio tab, you get a dialog where you can specifie the audio source (usually an ac3- file, demuxed with dvd2avi, if you followed the guide) after you've loaded the file, you can either choose to just mux the ac3 file into the movie, or encode it to mp3 with besweet. therefore is the lower part of this dialog where you can choose between a few different settings. i would suggest you just use the setting "-alt-preset 128" just check the box next to it. then go back to the divx5 tab and click 'add job to encoding queue' then, when you start the job, the audio is processed first and then the video and in the end the audio and video are even muxed automatically, which will leave you with a perfectly ready- to- burn .avi movie, which is almost always in sync!

hope this helps
steVe