home
products
contribute
download
documentation
forum
Home
Forums
New posts
Search forums
What's new
New posts
All posts
Latest activity
Members
Registered members
Current visitors
Donate
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
MediaPortal 1
MediaPortal 1 Plugins
Auto3D plugin for MediaPortal 1.2 - 1.12 (GUI & TV/Beamer)
Contact us
RSS
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="u095538" data-source="post: 1077053" data-attributes="member: 79639"><p>Hi guys. this question is unrelated to the plugin, but I don't know of a more appropriate place to ask. My apologies if this is in bad taste and mods please delete if you feel appropriate.</p><p></p><p>I am wondering how to get the most resolution out of a 3D BluRay backup through a passive-3D TV.</p><p></p><p>A passive 3DTV outputs the left and right eye frames at the same time (unlike active which switches each eye). To achieve this with only 1920x1080 pixels to work with, the TV polarises the first row of pixels for one eye, then polarises the second row for the other, this alternation continues all the way down the length of the display. Therefore, the TV is outputting 1920x540 pixels for each eye.</p><p></p><p>I can store a straight ISO of a BluRay and use frame packing to playback (the official BluRay 3D way), but I always reencode because the storage becomes ridiculous. So I've been reading online and there seems to be two methods: side by side and top and bottom (SBS & TAB).</p><p></p><p>So the final resolutions for each eye becomes:</p><p>SBS: 960x1080</p><p>TAB: 1920x540</p><p></p><p>But the /final/ output on a passive 3DTV (P-3DTV) means halving the vertical pixels again, so:</p><p>P-3DTV -SBS: 960x540</p><p>P-3DTV -TAB: 1920x270</p><p></p><p>270 pixels vertically is so lossy it surely becomes visible. Therefore the best method appears to be SBS.</p><p></p><p>But here's my thinking. If I store data using the TAB method, I end up with each frame having 1920 pixels of horizontal resolution, and 540 pixels of vertical resolution -exactly the output resolution per eye of a passive 3DTV. If I encode TAB style, are the passive 3DTVs smart enough to alternate the vertical pixels when playing back TAB content so as to not lose vertical resolution?</p><p></p><p>Another way to look at it is this, if I get clever with the encoding, I could theoretically encode a 1920x1080 frame that has its first row of pixels coming from the left frame of the source, then the second row coming from the right frame of the source, then alternate the whole way through.</p><p></p><p>This way you could send the frame to the TV, don the glasses and you've got a 3D image. This would mean every frame would store 1920x1080 pixels, and you would end up with 1920x540 each eye. Ideal. This would only be possible if the TV /always/ polarises the light. Perhaps it doesn't for 2D content, I dunno. Notice that storing TAB is effectively the same thing as this, but instead of alternating the rows of pixels yourself you simply stack the frames on top of one another and hope the TV does the job. But does it do the job? Does it put them together the clever way, or does it halve the vertical resolution like it would a SBS? I don't actually get the telly until tomorrow and hope someone knows.</p></blockquote><p></p>
[QUOTE="u095538, post: 1077053, member: 79639"] Hi guys. this question is unrelated to the plugin, but I don't know of a more appropriate place to ask. My apologies if this is in bad taste and mods please delete if you feel appropriate. I am wondering how to get the most resolution out of a 3D BluRay backup through a passive-3D TV. A passive 3DTV outputs the left and right eye frames at the same time (unlike active which switches each eye). To achieve this with only 1920x1080 pixels to work with, the TV polarises the first row of pixels for one eye, then polarises the second row for the other, this alternation continues all the way down the length of the display. Therefore, the TV is outputting 1920x540 pixels for each eye. I can store a straight ISO of a BluRay and use frame packing to playback (the official BluRay 3D way), but I always reencode because the storage becomes ridiculous. So I've been reading online and there seems to be two methods: side by side and top and bottom (SBS & TAB). So the final resolutions for each eye becomes: SBS: 960x1080 TAB: 1920x540 But the /final/ output on a passive 3DTV (P-3DTV) means halving the vertical pixels again, so: P-3DTV -SBS: 960x540 P-3DTV -TAB: 1920x270 270 pixels vertically is so lossy it surely becomes visible. Therefore the best method appears to be SBS. But here's my thinking. If I store data using the TAB method, I end up with each frame having 1920 pixels of horizontal resolution, and 540 pixels of vertical resolution -exactly the output resolution per eye of a passive 3DTV. If I encode TAB style, are the passive 3DTVs smart enough to alternate the vertical pixels when playing back TAB content so as to not lose vertical resolution? Another way to look at it is this, if I get clever with the encoding, I could theoretically encode a 1920x1080 frame that has its first row of pixels coming from the left frame of the source, then the second row coming from the right frame of the source, then alternate the whole way through. This way you could send the frame to the TV, don the glasses and you've got a 3D image. This would mean every frame would store 1920x1080 pixels, and you would end up with 1920x540 each eye. Ideal. This would only be possible if the TV /always/ polarises the light. Perhaps it doesn't for 2D content, I dunno. Notice that storing TAB is effectively the same thing as this, but instead of alternating the rows of pixels yourself you simply stack the frames on top of one another and hope the TV does the job. But does it do the job? Does it put them together the clever way, or does it halve the vertical resolution like it would a SBS? I don't actually get the telly until tomorrow and hope someone knows. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
MediaPortal 1
MediaPortal 1 Plugins
Auto3D plugin for MediaPortal 1.2 - 1.12 (GUI & TV/Beamer)
Contact us
RSS
Top
Bottom