viDrop - free open-source converter for RockChip players

[bucigabi]

Thanx

[mjjgirlie]

Hi. I got an Omega V89 player for christmas. I converted a film to avi using the aviconverter that came with it. The picture and audio are very good quality but after about a minute of playback they become very out of sync with each other.

Is my player faulty?

Should I use your software to do the conversion instead, will this help? Are there some settings I can change to improve the lip sync problem?

Many thanks for your help.

[Lord Eriol]

Originally Posted by lokster";p=&quot

Yes, there is. In "Advanced settings", in "Resize method" select "add borders". This way, if the movie's aspect ratio is different than the aspect of your player, the movie won't get cropped, but resized proportionally to the specified width, and then expanded vertically with black borders, so it's height is equal to the specified height. Here is an example of the three resize methods:

For our RockChip based players, "Keep aspect" does not work, because the movie resolution must be equal to the player resolution.

(these screenshots are from Transformers too )

hi lokster, many thanks for your tool, before using it i must apply 2 conversions (from flv to avi and then aviconverter) to convert flv file for my rockchip player, and without drag&drop, loading one file at once... was very boring, really great tool.

but... i have a problem, many flv files don't resize correctly!
I have 0.53 version, and tried all 3 resize methods, but nothing.
The video below for example, source video is 320x262 flv file, i've setted vidrop with 224x176 resolution (only resolution suitable for my player), Mpeg2 audio (and other flv conversion goes fine with these setting):
- with pan&scan i obtain 214x176 output size
- with keep aspect and add border i obtain the same result, 224x184 output size

below a set of screenshots of that file conversion: my vidrop setting (with "add borders" setting as you can see), video source and output info (with Gspot), and mencoder log screenshot (note output size)



if you want try directly, the source file is this:
http://it.youtube.com/watch?v=CCq3BnEUb1s

[jp]

mjjgirlie: Your player is likely OK. Desynching is a common complaint with XVid irrespective of the conversion program used. I've used various ones but my favourite is viDrop which you can find above or in the downloads section on this site. I'm not sure that it's actually the XVid codec because the quality and parameters of the source file seems to affect this.

I've converted some files with no desynching and others with it occuring. One thing that may minimize this is to convert at video 300 kbps with audio of 128 kbps or lower. I use these paramaters with a normalize boost routinely for my conversions and they work out well. Don't go higher on the video bit rate unless you find significant artifiacts due to a high degree of motion in the source vid like in an action scene. Segmenting a large file into 10 minute pieces during conversion may also help minimize desynching.

Lord Eriol: Firstly, thanks for your excellent description and documentation of your problem. I've run into the same problem as you previously and have come up with a solution that I've posted before and will do so below. I did test it on the youtube vid that you've had problems with to make sure it works in your case.

Before I forget, I checked out your conversion parameters on your screen captures, and would suggest you decrease the video bit rate and increase the audio as follows: video bit rate of 300 kbps and audio 128 kbps. If you have video artifacts in a high action scene experiment with a higher video bit rate and see if it helps. It may not. I convert all my vids at 300 / 128 with a normalize of 0.65 and generally find this works well as I like to listen through my Optimus Cobalt's built in speaker. The volume increases without distortion. I use the higher audio bit rate as I find it can make a difference if playing the audio through speakers or with earphones. I use my player primarily to watch video and as a picture viewer.

To solve the video dimension issue, I stripped out the dimension commands from the AVIConverter ini file in v4. I'll include the command lines below. Copy and paste them in the Extra mencoder parameter box at the bottom of the advanced settings tab page. This will overide any dimension settings so you don't need to click any boxes or change any dimensions on the page. The other advanced parameters can still be changed. On my computer, I've saved these settings using the presets window at the top of the program window, so I don't have to copy and paste them for every series of conversions. Try all three of these with your youtube vid to see the differences in the result.

Full aspect
-vf-add scale=224:176 -vf-add expand=224:176:-1:-1:1

4:3
-vf-add scale=224:168 -vf-add expand=224:176:-1:-1:1

16:9 (Borders)
-vf-add scale=224:126 -vf-add expand=224:176:-1:-1:1

[tovmeod]

is it possible to add a progress indicator?

[jp]

tovmeod: I can't answer for Lokster in terms of additional ways to indicate progress however there are currently two ways to monitor progress.

You can tell which file is being processed by putting the mouse pointer over viDrop icon in taskbar lower right.

To see the progress on the current file click on the dos window viDrop icon on the taskbar and in this processing window it gives the % completed and the number of minutes remaining in the processing for that file.

I find the combination of these all I need for assessing progress. Is there something in addition to these that you would find helpful?

[tovmeod]

the dos windows basically gives me this, adding new lines while it converts the file:

Skipping frame!
Error while decoding frame!8.48fps Trem: 0min 0mb A-V:0.019 [220:95]
Pos: 123.8s 3711f ( 0%) 18.50fps Trem: 0min 0mb A-V:0.022 [220:95]
Skipping frame!
Error while decoding frame!8.50fps Trem: 0min 0mb A-V:0.022 [220:95]
[h264 @ 00AF21A0]concealing 960 DC, 960 AC, 960 MV errorsV:0.021 [220:95]

Skipping frame!
Error while decoding frame!8.51fps Trem: 0min 0mb A-V:0.021 [220:95]
[h264 @ 00AF21A0]concealing 960 DC, 960 AC, 960 MV errorsV:0.021 [220:95]

Skipping frame!
[h264 @ 00AF21A0]concealing 960 DC, 960 AC, 960 MV errorsV:0.020 [220:95]

Skipping frame!
[h264 @ 00AF21A0]concealing 960 DC, 960 AC, 960 MV errorsV:0.018 [220:95]

Skipping frame!
Pos: 124.7s 3737f ( 0%) 18.53fps Trem: 0min 0mb A-V:0.020 [220:95]
Skipping frame!
Error while decoding frame!8.53fps Trem: 0min 0mb A-V:0.018 [220:95]
Pos: 125.0s 3745f ( 0%) 18.54fps Trem: 0min 0mb A-V:0.017 [220:95]
Skipping frame!
Error while decoding frame!8.54fps Trem: 0min 0mb A-V:0.018 [220:95]
Pos: 125.1s 3750f ( 0%) 18.55fps Trem: 0min 0mb A-V:0.020 [220:95]

[tovmeod]

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?

[Lord Eriol]

Originally Posted by jp";p=&quot

Lord Eriol: Firstly, thanks for your excellent description and documentation of your problem. I've run into the same problem as you previously and have come up with a solution that I've posted before and will do so below. I did test it on the youtube vid that you've had problems with to make sure it works in your case.

...

Full aspect
-vf-add scale=224:176 -vf-add expand=224:176:-1:-1:1

4:3
-vf-add scale=224:168 -vf-add expand=224:176:-1:-1:1

16:9 (Borders)
-vf-add scale=224:126 -vf-add expand=224:176:-1:-1:1

Tanks jp! I used your full aspect mencode setting, and all is OK now!
I've used other your suggested settings too, 300kbps bitrate and 128kbps and goes fine too.

@lockster
Now i think i've the near-perfect coverter for my mp4 player, just only one thing remain to fix... and i hope you can fix it in next version: vidrop should not add "_converted" to output files by default.
i think is useless.... you can choose a different folder output (to avoid files overwriting). Maybe that can be leaved as an option.
However this is a little detail... many thank for your great work

[jp]

Lord Eriol: Glad my suggestions work for you. Since using them I haven't had a problem with dimensions.

I like the automatic addition of "_converted" to output files as I always know where the converted files will end up. Plus I usually convert a number of files at once, sometimes when I'm away from my computer for extended periods or overnight. If I drag and drop batches from various folders and then process all the batches together, the converted files are deposited back into the appropriate folders. And I don't have to worry about renaming each of the output files.

With respect to your suggestion to lokster, currently you can name the output file and choose where you want it to go. To do this, on the main settings tab page uncheck the auto add to batch checkbox, drop in your file and go down to the Output A/V file area and use the folder selection button on the right side of the program window to select the desination folder and to name the output file. Once you're finished, click the add button and continue on adding and naming other files. Then click Run to convert the batch. Hope this helps.

Further to your naming idea, it would be handy to be able to change the "_convert" to whatever the user would like. For instance, I would be tempted to add the date to make the converted files more searchable.