[Galaxy Tab 10.1 General] TECK:
I read a lot of info into XGA forums and is a great resource for either newbies or pro's.

For starters, Kies is probably the worst software, for either your Galaxy phone or tablet. I would recommend you using the default Microsoft drivers to setup properly your phone/tablet, it is so much easier to upload files and also sync Music/Video's with Windows Media Player. I run Windows 7 Ultimate x64 and all I had to do is connect my tablet to the PC... it automatically downloaded all modem and disk drivers from Windows Update, allowing me to use Odin with success.

Personally, I use the WMP Sync feature only for Music files:

The WMP Video conversion is not great in terms of quality and size. I have a lot of experience with movie encoding from Bluray to any format and the ONLY tool I recommend to use is MeGUI. It will properly convert a movie with amazing quality and ZERO shuttering, pixelation or lag. Yes, it is not a tool for newbies... it has a complex structure to learn related to video/audio encoding... but once you handle it, your videos will have stunning quality in either PC/Media Center, tablet or phone.

I noticed that many people try all kind of apps to play movies and the result is not always great... you end up with a video lag, weird pixelation or shuttering while playing the movie. Personally, I use the Google Videos app which plays my encoded movies perfectly.

I created a quick sample for you guys, so you understand what a professional encoder like MeGUI can do for your movies, which happens to be also free.

To test the samples, upload all files to your tablet and start playing them with Google Videos. The samples will be listed into Personal Video's section. These are the results I have on my P7510 32GB tablet:

sample-orig.mp4 (80.4mb) - original movie sample with intense animation, generates lag

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 8 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 48s
Bit rate : 5 681 Kbps
Width : 1 280 pixels
Height : 528 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Variable
Frame rate : 23.976 fps
Minimum frame rate : 15.984 fps
Maximum frame rate : 47.952 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.351
Stream size : 73.8 MiB (92%)
Language : English

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1mn 48s
Bit rate mode : Constant
Bit rate : 502 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 6.52 MiB (8%)
Language : English

sample-wmp.wmv (71.7mb) - Windows Media Player automated conversion, generates shuttering

Video
ID : 2
Format : VC-1
Format profile : SP
Codec ID : WMV3
Codec ID/Info : Windows Media Video 9
Codec ID/Hint : WMV3
Duration : 1mn 49s
Bit rate mode : Constant
Bit rate : 5 679 Kbps
Width : 1 280 pixels
Height : 528 pixels
Display aspect ratio : 2.40:1
Frame rate : 15.000 fps
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.560
Stream size : 73.8 MiB
Language : English (US)

Audio
ID : 1
Format : WMA
Format version : Version 2
Codec ID : 161
Codec ID/Info : Windows Media Audio
Duration : 1mn 49s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Bit depth : 16 bits
Stream size : 2.50 MiB (4%)
Language : English (US)

sample-megui.mp4 (36.7mb) - MeGUI encoded sample, flawless image and sound

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.0
Format settings, CABAC : No
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1mn 48s
Bit rate : 2 505 Kbps
Maximum bit rate : 3 371 Kbps
Width : 1 280 pixels
Height : 528 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.155
Stream size : 32.5 MiB (89%)
Writing library : x264 core 116 r2074 2641b9e
Encoding settings : cabac=0 / ref=3 / deblock=1:-1:-1 / analyse=0x1:0x111 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=18.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=2500 / vbv_bufsize=2500 / crf_max=0.0 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2011-09-02 03:33:41
Tagged date : UTC 2011-09-02 03:33:41

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 1mn 49s
Bit rate mode : Variable
Bit rate : 320 Kbps
Maximum bit rate : 328 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 4.15 MiB (11%)
Language : English
Encoded date : UTC 2011-09-02 03:33:41
Tagged date : UTC 2011-09-02 03:33:41

Basically, MeGUI not only produced a top 720p video for my tablet, but also reduced the file size by more than 50%. I want you to try the files and let me know which file played best in your tablet. While playing the sample-megui file, make sure you tap on the 5.1CH logo to enable the 6 channels sound.