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3D Vision Blog - Forum :: LG Optimus P920 3D - filling it!!!
3D Vision Blog - Forum
https://3dvision-blog.com/forum/

LG Optimus P920 3D - filling it!!!
https://3dvision-blog.com/forum/viewtopic.php?f=18&t=1513
Page 2 of 2

Author:  Bloody [ 16 Aug 2011, 11:00 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

For video encoding without editing I'm usually using Media Coder - http://www.mediacoderhq.com/

It is free and offers a lot of advanced options, it even supports CUDA-accelerated encoding of H264 video.

Author:  markr041 [ 16 Aug 2011, 23:06 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

You can definitely play 1920x1080 videos. I have found no problem playing 3D videos without conversion from the Sony 3D Bloggie, which is sbs AVC .h264 at 12Mbps, 30 fps progressive at 1920x1080. I also play 108024p 3D videos, all AVC.
Of course, for these, I have to tell the Optimus to play them in 3D.

I, too, would like to know how the Optimus knows the downloaded Youtube 3D sbs videos should play in 3D with no prompting. I believe for those it will play them in 3D even if not in that crtitical "etc" folder. Whats's the secret? And it will stream them in 3D automatically without downloading.

Author:  Bloody [ 17 Aug 2011, 09:57 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

You should be careful with 1080p 3D videos as having them with higher bitrate or higher encoding profile may give trouble for the phone trying to play them properly...

As far as I know there is no official tag that tells players the video in an MP4 file container is in stereo 3D format, so it might be something specific that youtube uses to mark the videos.

Author:  markr041 [ 17 Aug 2011, 23:21 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

I agree that the phone may not play every video, but what I am saying is that it does have very good capabilities to play most videos, and that it may be worthwhile trying to play a video rather than assuming one must convert it - no harm will be done to the phone! Of course, given the small screen and limited (but excellent, given the size) resolution it may be wothwhile converting to achieve lower file sizes for storage purposes.

Author:  Oscar Nizero [ 31 Aug 2011, 22:10 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

Converting to .mp4 is not such a pain, and I'm afraid a 1080 -mkv will take more than the 4Gb allowed by FAT32.

I've found this page: seems that we are not the only ones with the same problem :D

Author:  markr041 [ 01 Sep 2011, 07:14 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!


Author:  Bloody [ 01 Sep 2011, 11:15 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

YouTube encodes a video in multiple formats and resolutions, but it also takes into account what is the resolution and quality of the source you upload. But even if you upload a Full HD video you may be able to download the 720p version that YouTube has also generated...

Author:  iland [ 01 Sep 2011, 17:51 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

I found this thread very intersting, any news regarding the "secret 3d flag"?

I suspect that it could be hiding inside a udta ATOM in the MP4 file format.

Author:  markr041 [ 01 Sep 2011, 17:59 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!


Author:  DanFury [ 04 Feb 2012, 17:18 ]
Post subject:  Re: LG Optimus P920 3D - filling it!!!

I DID IT!
I just registered to tell you the secret flag so your videos will automatically play in 3D and so they work even when you stream them or play them with MX Player.

Go into Handbrake, click on the advanced tab and add :frame-packing=3 at the end.

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