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MyMPx.org (http://mympx.org/forum/)
-   Video related (http://mympx.org/forum/video-related/)
-   -   viDrop - free open-source converter for RockChip players (http://mympx.org/forum/video-related/38838-vidrop-free-open-source-converter-rockchip-players.html)

lokster 14th Jan 2008 11:06 pm
Quote:
Originally Posted by tovmeod";p=&quot (Post 43329)
btw, I went to the mencoder site (http://www.mplayerhq.hu/design7/news.html), the latest release is rc2 while vidrop comes with rc1, any particular reason?

I looked at their changelog, it doesn't seems to be just a small fix.

I noticed that mencoder.exe and mplayer.exe that comes with vidrop has 3.83 and 3.94 Mb, while the rc2 that I downloaded has 11.6 and 12.2 Mb, did you built from the source removing the stuff vidrop doesn't use? why the size difference is so big?
1st: at the time when I uploaded version 0.53 of viDrop, rc1 was the latest release. If you wish, you can download the latest mencoder/mplayer and replace those in the viDrop folder.

2nd: The files are smaller because they are UPX compressed. I didn't compile mencoder myself.

---
About the "_converted" file suffix: in the next version I will ad an option to change it (if you dont like it - you will be able just to use empty suffix)

DaremoS 15th Jan 2008 3:13 am
Quote:
Originally Posted by lokster";p=&quot (Post 43578)
---
About the "_converted" file suffix: in the next version I will ad an option to change it (if you dont like it - you will be able just to use empty suffix)
Lokster... are you sort expert in conversions or you simply are really good programming the front-end? :)

I really like your viDrop and it's my preferred converter... but I have a doubt concerning out-of-synch issue.

Kindly read this taken from other forum:

Quote:
Video and audio in most cases are synchronized by two ways:
1) you define play speed (alias number of frames per second (fps)) and both video and audio is played at this speed, so video and audio is not surely synchronized when played (this method is used by 95% of applications)

2) you add timestamps to video and also to audio, and when video and audio is played these timestamps have to correspond together, so video and audio is surely synchronized when played; this method is harder to implement and not all types of videos or decoders can use it
This is more or less clear for me... second method seems to be more precise but requires a player that use it.
This of timestamps is done by Mencoder or is you who have add this feature in some way in Mencoder?
I ask you because your viDrop have always produced in-synch videos for a player I have that seems to use this method...
Will it work well if a player doesn't use this second method?

Thanks for your answer in advance

lca77 16th Jan 2008 9:44 am
Re: Free Open-Source converter for RockChip MPEG4 (XVID) pla
 
@lokster: You've done a very good job with viDrop !

@jp: I'll prefer only -vf-add expand=224:176:-1:-1:1 as an Extra Mencoder parameter. By doin it this way, i can change Width and Height to every Size i like - below of 224x176 ;-D

lokster 20th Jan 2008 8:38 am
Quote:
Originally Posted by DaremoS";p=&quot (Post 43591)
Quote:
Originally Posted by lokster";p=&quot (Post 43578)
---
About the "_converted" file suffix: in the next version I will ad an option to change it (if you dont like it - you will be able just to use empty suffix)
Lokster... are you sort expert in conversions or you simply are really good programming the front-end? :)

I really like your viDrop and it's my preferred converter... but I have a doubt concerning out-of-synch issue.

Kindly read this taken from other forum:

Quote:
Video and audio in most cases are synchronized by two ways:
1) you define play speed (alias number of frames per second (fps)) and both video and audio is played at this speed, so video and audio is not surely synchronized when played (this method is used by 95% of applications)

2) you add timestamps to video and also to audio, and when video and audio is played these timestamps have to correspond together, so video and audio is surely synchronized when played; this method is harder to implement and not all types of videos or decoders can use it
This is more or less clear for me... second method seems to be more precise but requires a player that use it.
This of timestamps is done by Mencoder or is you who have add this feature in some way in Mencoder?
I ask you because your viDrop have always produced in-synch videos for a player I have that seems to use this method...
Will it work well if a player doesn't use this second method?

Thanks for your answer in advance
I am just programming the frontend, and I am not a conversion expert. Not at all... :) I am not sure which method mencoder uses, and absolutely not sure how a specific player will perform in either of the cases... It depends from the player.
I never had out-of-sync issues with viDrop, and maybe if somebody has this problem, its because the bitrate is too high and the player can't handle it.

cyfi 22nd Jan 2008 7:00 pm
Re: Free Open-Source converter for RockChip MPEG4 (XVID) pla
 
Im having bad luck with this player. The video/sound are out of sync basically 100% of the time now and no matter what format i convert from the sound is always out of sync at least a little bit if not an unbearable amount. Please help

cyfi 22nd Jan 2008 7:01 pm
Re: Free Open-Source converter for RockChip MPEG4 (XVID) pla
 
Im having bad luck with this player. The video/sound are out of sync basically 100% of the time now and no matter what format i convert from the sound is always out of sync at least a little bit if not an unbearable amount. Please help

lca77 24th Jan 2008 2:19 am
Re: Free Open-Source converter for RockChip MPEG4 (XVID) pla
 
Dear cyfi, wich version of AVIConverter is on the Cd to your Rockchip-Player ? Is it Version 2, 3 or 4 ? Or try this: Start your AViConverter and post the shown resolution here. I will tell you then which parameters you should use in viDrop - and hopefully will work. rgrds, lca77

DaremoS 24th Jan 2008 2:32 am
Re: Free Open-Source converter for RockChip MPEG4 (XVID) pla
 
Quote:
Originally Posted by cyfi";p=&quot (Post 43928)
Im having bad luck with this player. The video/sound are out of sync basically 100% of the time now and no matter what format i convert from the sound is always out of sync at least a little bit if not an unbearable amount. Please help
It's not bad luck...
It's a matter of play with a couple of values: bitrate and FPS.
reduce bitrate to about 600
and FPS to 20

You can play with both values until you get a good image
FPS will bring a fluent motion
bitrate will bring more details in image.

lokster 24th Jan 2008 4:20 am
Quote:
Originally Posted by DaremoS";p=&quot (Post 43987)
Quote:
Originally Posted by cyfi";p=&quot (Post 43928)
Im having bad luck with this player. The video/sound are out of sync basically 100% of the time now and no matter what format i convert from the sound is always out of sync at least a little bit if not an unbearable amount. Please help
It's not bad luck...
It's a matter of play with a couple of values: bitrate and FPS.
reduce bitrate to about 600
and FPS to 20

You can play with both values until you get a good image
FPS will bring a fluent motion
bitrate will bring more details in image.
I think that video bitrate @600 kb/s is still very high fot our players. Most of the videos I convert with viDrop for my 320x240 Rockchip are at 300 kb/s video and 112 kb/s audio, with Motion search precision 6 and 22 FPS. The results are very good, and I never have out-of-sync problems with these values.

And finally: beware! viDrop 0.54 is comming in the next few days! With lots of old bugs fixed, and a lots of new ones... :)
And some new features (like downloading directly from youtube)

DaremoS 24th Jan 2008 5:30 am
Quote:
Originally Posted by lokster";p=&quot (Post 43991)
Quote:
Originally Posted by DaremoS";p=&quot (Post 43987)
Quote:
Originally Posted by cyfi";p=&quot (Post 43928)
Im having bad luck with this player. The video/sound are out of sync basically 100% of the time now and no matter what format i convert from the sound is always out of sync at least a little bit if not an unbearable amount. Please help
It's not bad luck...
It's a matter of play with a couple of values: bitrate and FPS.
reduce bitrate to about 600
and FPS to 20

You can play with both values until you get a good image
FPS will bring a fluent motion
bitrate will bring more details in image.
I think that video bitrate @600 kb/s is still very high fot our players. Most of the videos I convert with viDrop for my 320x240 Rockchip are at 300 kb/s video and 112 kb/s audio, with Motion search precision 6 and 22 FPS. The results are very good, and I never have out-of-sync problems with these values.

And finally: beware! viDrop 0.54 is comming in the next few days! With lots of old bugs fixed, and a lots of new ones... :)
And some new features (like downloading directly from youtube)
It's just mention that values to show that is not a problem of converter but of parameters... your converter works fine in more difficult players as it is Cowon D2 where I've some musical videos at video: 800 kbps/30FPS with audio: 192 kbps, absolutely in-sync. D2 is a powerful processor anyway


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