How do you promote your videos on youtube without the use of bots?

On the whole, 320x240 is a fairly good compromise which suits the different player sizes well enough. Remember that the video will not always be seen on the large version of the player, and some versions of the player are actually smaller than 320x240.
YouTube supported video formats are as follows:
MPEG
YouTube recommends MPEG4 (Divx, Xvid) with MP3 audio. This option probably provides the best compromise between quality and file size. Other versions of MPEG are also acceptable.
The excellent DVD to Apple TV software also enables you to custom file size.
AVI
This is the default format used by many editing programs. It provides excellent picture quality but file sizes are large. This can be a good option for short videos.
MOV, WMV & Others
These are perfectly acceptable, but may not provide the same quality or small file sizes as MPEG4.
Video Size (Resolution, Pixel Dimensions)
YouTube recommends a resolution of 320x240. Note that this is smaller than the standard YouTube video screen — videos this size are automatically expanded to fill the screen. A quick test indicates that the screen used for the main YouTube player is 450x338 pixels (do not take this as an official specification though).Mac Tod converter provides several optimized seetings for iPod adn iPhone.
YouTube website allows people to upload videos including WMV, MPEG4, MOV, AVI,FLV and MPEG
I think the Movavi Video Converter is your best choice,It alway works well for me. It is a groundbreaking video format converter you can use to convert video & DVD files. Convert video. Rip video. Save in iPod, iPhone, PSP, PDA, cell phone formats. Do it all with this powerful video file converter.
All key formats are supported!
Input Video Formats:
AVI (including DivX, XviD, MJPEG, and other codecs), DV AVI, MPEG 1,2, MP4 (including H.263, H.264, and other codecs), Windows Media Video (WMV, ASF), 3GP (3GPP, 3GPP2), QuickTime (MOV, QT), DVD (VOB, IFO), MOD, DAT (VCD, SVCD).
New: M2T, MTS, MKV, VRO, Flash (FLV).
Pavtube MTS/M2TS Converter for Mac is a marvelous conversion software.
Output Video Formats:
AVI (including DivX, XviD, MJPEG, and other codecs), MPEG 1,2, MP4 (including H.263, H.264, and other codecs), Windows Media Video (WMV), 3GP (3GPP, 3GPP2), QuickTime (MOV, QT) Real Media (RM, RMVB).
New: Flash (FLV).
Output Video for Mobile Devices:
iPod, iPhone, Apple TV, PSP, Zune, PDA/Pocket PC (including BlackBerry), Creative Zen, Archos, Epson media players, cell phones, smartphones.
Output Audio Formats:
MP3, WAV, WMA.
New: OGG, AAC, FLAC, Monkey's Audio.
Output Image Formats:
JPEG, PNG, BMP, GIF.