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+--- Thread: What featurs to look for in a new TV (/showthread.php?tid=99915)
- >>X<< - 2011-04-23 20:43
He's talking about the image not audio if you have a screen ISF calibrated its done to a set of industry standards once done you see the image exactly as its meant to be seen, THX certified screens have a setting that gets as close to this standard without having your screen calibrated its not as perfect as having your screen ISF'd because its not done to each source
I should warn you if your use to a over saturated image you might take a while to adjust to a THX mode
- t2ffn - 2011-04-23 21:18
THX certification is for the picture:
http://www.thx.com/consumer/home-entertainment/video/thx-certified-plasmas-lcd-tvs-projectors/
Its intended to give the most accurate picture, as intended by the movie director, with an out of the box setting. Its very good, and what the fully calibrated settings begins from. On top of THX, there are two custom ISF picture settings. Some people set one for day and one for night, but I think they both begin at THX and tweak away!
I'm probably still inside the 200hrs breaking in stage so I am running THX to let the screen settle.
- eskro - 2011-04-24 01:04
>>X<< Wrote:If you get that message its probably because it doesn't support one of the refresh rates its switched to over HDMI
Yes!! Exactly!! I can confirm this now!!
i had a library of ~50 .AVI movie files
and some of them wouldn't play like i described earlier....
my TV pops-up a message saying "screen resolution not supported"...
Anyways, going through them using MediaINFO application,
i then noticed that all the movies that weren't playable
when the 'Adjust Display to Frame rate' feature was enabled
had a refresh rate of 25Hz (24.995fps)!!
And all those that worked had a refresh rate of 24Hz (23.976fps)!!
This means, my HDTV simply doesnt support 25Hz!!
thats it!!
Im now really glad i found the issue but now, the big question,
How to turn those 25Hz .AVI movie files into 24Hz .AVI movie files...??
And specially without loosing Audio/Video Sync O.O ??
Thanx
- MidnightWatcher - 2011-04-24 01:42
What ever TV you choose, make sure it has the best true contrast ratio possible. The contrast ratio is one of the #1 factors to great PQ.
- topsyturvy - 2011-04-24 02:19
eskro Wrote:Yes!! Exactly!! I can confirm this now!!
i had a library of ~50 .AVI movie files
and some of them wouldn't play like i described earlier....
my TV pops-up a message saying "screen resolution not supported"...
Anyways, going through them using MediaINFO application,
i then noticed that all the movies that weren't playable
when the 'Adjust Display to Frame rate' feature was enabled
had a refresh rate of 25Hz (24.995fps)!!
And all those that worked had a refresh rate of 24Hz (23.976fps)!!
This means, my HDTV simply doesnt support 25Hz!!
thats it!!
Im now really glad i found the issue but now, the big question,
How to turn those 25Hz .AVI movie files into 24Hz .AVI movie files...??
And specially without loosing Audio/Video Sync O.O ??
Thanx
you will have to reencode which is not a good idea because you will loose picture quality, which isnt great to begin with when dealing with divx avi's.
I think there is a patch somewhere which will allow you to select with resolutions/ fps combination result in 'Adjust Display to Frame rate' firing.
on another note, i've noticed most tv's support input fps for 24/30/50/60 but none really for 25 (even in europe where PAL is normal). anyone know why?
- eskro - 2011-04-24 07:20
well, i'll re-encode then,,,
but, which app will do it without loosing Audio/Video Sync??
- T800 - 2011-04-24 08:09
eskro Wrote:well, i'll re-encode then,,,
but, which app will do it without loosing Audio/Video Sync??
Handbrake will reencode the video and the audio to keep them in sync.
A reencoded avi will look pretty poor though.
- ZERO <ibis> - 2011-04-24 08:12
SpectreX Wrote:Plasma has better blacks and contrast than a normal LCD set, not an LED LCD. LED backlight corrects the shortcomings of traditional LCD tech (blacks and contrast) and high-end LED sets can compete with High-End plasma sets easily. Also, plasma has the disadvantage of high power consumption
On paper at least...
MidnightWatcher Wrote:What ever TV you choose, make sure it has the best true contrast ratio possible. The contrast ratio is one of the #1 factors to great PQ.
Also make sure that the contrast ratio that your reading is actually real. It is VERY difficult to get the actual contrast ratio and that is the only one that matters. You can find more info here: http://www.maximumpc.com/article/features/display_myths_shattered_how_monitor_hdtv_companies_cook_their_specs
- >>X<< - 2011-04-24 14:46
eskro Wrote:well, i'll re-encode then,,,
but, which app will do it without loosing Audio/Video Sync??
You do not need to re-encode the video at all 25fps material is only sped up from 23.976
Demux the audio with "virtualdubmod" change the audio from 25fps > 23.976 using "Besweet" (it has a pre-set for this) then mux the audio back in using "virtualdubmod" with the old audio disabled and frame rate changed to 23.976 those settings are set in "virtualdubmod" then save this in "Direct stream copy" mode so the video stays untouched
Obviously this changes the pitch of the audio slightly but its actually changing it back to the original
The only part that takes time is encoding the audio but this will be a fraction of the time of encoding the video, adding the audio back to the video and changing the video frame rate takes minutes
- eskro - 2011-04-24 15:23
Sweet >>X<<!! i'll try that when i get a chance!! thanks