Gentoo Forums
Gentoo Forums
Gentoo Forums
Quick Search: in
the perfect DVD encode (to avi) with mencoder (tutorial)
View unanswered posts
View posts from last 24 hours

 
Reply to topic    Gentoo Forums Forum Index Multimedia
View previous topic :: View next topic  
Author Message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sat Mar 06, 2004 5:57 pm    Post subject: the perfect DVD encode (to avi) with mencoder (tutorial) Reply with quote

Hi all,

after having gathered much knowledge about mencoder and mplayer
I discovered (I just think it is) the perfect encoding method (special options).

If you wanna have a look, visit my tutorial website whose URL is as follows:
http://wave.prohosting.com/srlclan0/linux/mencoder.html

By the way, later I am going to add the link to this page on my homepage: www.srl.de.vu
[edit] it's linked now => menu > tutorials > linux [/edit]

I tried to do my best, even to make it suitable for beginners,
so how do you like the encoding tutorial? :D
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
Angrybob
Guru
Guru


Joined: 19 Apr 2003
Posts: 575

PostPosted: Sat Mar 06, 2004 8:33 pm    Post subject: Reply with quote

nice, but that bit about working out cropping values with a ruler is just silly :)

A nicer way to do it is this:-

First use mplayer's autocrop feature to get some rough values to start with
Code:

mplayer -nosound -vo null -vop cropdetect=50 -ss <some_time_value> <filename>


That will print out some values that it has detected, now pass then to the rectangle filter to get a graphical representation of that cropping rectangle

Code:

gmplayer -nosound -ss <some_time_value> -vop rectangle=width:height:topleftX:topleftY <filename>


now just plug those values straight into the crop filter
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sat Mar 06, 2004 9:27 pm    Post subject: Reply with quote

thanks, I will correct it
when I have tested it getting a perfect result :)

just another option I did not found,
anyway it is a silly work-around, indeed :lol:
and also extraordinary, despite of being another solving way :D

but it worked all time, just up to 2 or 3 pixel deviation,
sometimes exact crop, although it's a strange method :wink:
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sat Mar 06, 2004 9:43 pm    Post subject: Reply with quote

ok, perfect ..

I tried the following:
Code:
mplayer -nosound -vo null -vop cropdetect=50 -ss 00:06:10 [file]
.... (crop values) ....
mplayer -nosound -ss 00:02:10 -vop rectangle=716:552:2:12 [file]

it set a border surround the area being cropped :D

I'm correcting it and will upload it then :wink:

my tutorial is getting more perfect ... :)
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sat Mar 06, 2004 10:41 pm    Post subject: Reply with quote

OK guys and girls ;)

the new version is online, have fun .. :D
(Where the link is? It's the same as in my first post, see above)

Do you have any further hints, then post them! :)
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sun Mar 07, 2004 11:31 am    Post subject: Reply with quote

I just found out something not rather serious,
but extrem hearing people (like me) can here if there is a
timeshift, unfortunately there is, just about 0.5 seconds or less.

I try to work on it, and also to add a preview option and part in my tutorial, just to see if there it still is using certain options.

when I have finished those "studies" my tutorial will be improved ;)
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sun Mar 07, 2004 12:18 pm    Post subject: Reply with quote

OK I have solved that little problem as well,
unfortunately it is needed that the audio track should also be encoded in
the 2nd and 3rd encoding step instead of copying the audio stream from the frameno.avi

On the one handside this way is now perfect,
on the other handside it takes more time to convert.

Anyway the result does matter ;)
thus it is perfect now. (I hope)

I just uploaded the newest version of my tutorial, (link, see above)
but I need an agreement, so I just let it encode another DVD the fast way
(without "vme=1:v4mv"), althought i think it is perfect.

I just need to go for sure, if the encode is finished perfectly I will tell you,
then my tutorial is perfect. :D
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sun Mar 07, 2004 4:02 pm    Post subject: Reply with quote

seems like the timeshift is still there,
it's just about 0.5 till 1 second, anyway ..

if anyone has an idea how to get rid of the timeshift (of the audio track)
please post it here! :?
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
sethleon
Guru
Guru


Joined: 14 Dec 2003
Posts: 398
Location: Germany

PostPosted: Sun Mar 07, 2004 4:35 pm    Post subject: Reply with quote

ok i just have a solution for correcting the Audio/Video (A/V) synchronisation
while playing the movie with mplayer:
pushing the numpad key "+" or "-" are shifting the Audio track. :D

if anyone has an idea, how to sync it correctly while encoding (better: before), then please post it! :wink:
_________________
Mess with the best, die like the rest.
Back to top
View user's profile Send private message
Display posts from previous:   
Reply to topic    Gentoo Forums Forum Index Multimedia All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum