With hundreds of possible Car Video Systems this will cover some basics to start exploring what is right for you.
What Product types provide the best values, cost effective options and features possibly worth the extra expense.
Most vehicles have multiple choices so users will need to decide what is best for them along with features desired.

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Headrest Video Models (see our Fit Guide for Universals)
Factory Replacement - OEM Matched Replacement Vehicle Headrest Systems
Universal Replacement - Dual Post LCD/Headrest Systems in 3/4 basic Colors
Dual Post Bracket - Clamp Headrest Mounts for Easy Non Permanent Installs
Strap in Mount - Non Permanent Headrest Wraps fit most types of Headrests
Cut in Shroud - Permanent Cut Installation mounted Car Headrest Monitors
Glove Cover - Slide Over Headrest 3 Colors Neoprene Cover for Cut In LCD

Overhead Video Models (see our Fit Guide for applications)
Universal - Standard Flush Mounted Model for flat headliner spaces
Trim to Fit - Universal with Trim Ring to accomodate curved areas
Factory - Vehicle Specific Replacement Roofmount Monitor Console

Sun Visor - Cut in Shrouds, Non-Permanent Brackets/Straps and Replacements

GooseNeck -  Front or Rear Mount connect to Seat Bolt with Flexible Extension

Surface Stand - Small Surface Mount LCD Stand with View Angle Adjustments

Custom - From Fixed Indash to Fiberglass and other unique mounting applications

InDash Systems - Variety of types and sizes from Single to Double Din are available
(1 DIN = 2 inches of deck height, Dual/Double DIN requires 4in Height to mount)

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DVD Unit and other MultiMedia Video Sources (Video Game, HardDrive Units, etc)
Car Monitors use standard RCA Composite Video Inputs for easy connection of sources
Along with the normal DVD Player there are Receivers, USB/SD Media and many others.

Portable/Home MultiMedia Devices can be used in a Mobile System if
- Vehicle Power is 12VDC many products need a Power Adapter or Converter
- Source outputs RCA Composite A/V Connections or adapted to accomodate

DVD Players are most common used in Video Systems
- Slave units can be mounted indash but Do Not replace a headunit
- Compact DIN size 6.5 x 6.5 x 2in allows various install applications
- Also Mount Under Seat/Dash, GloveBox, Consoles, and many others

DVD Receivers are used for vehicle headunit replacment
- Built in Radio Receiver and Speaker Power not found in a Player
- Can also be slave mounted but normally limit to indash hardware

DVD Discs (players also play DVD-R/RW) most popular for MP3/4 Music/Movies
New Players can have USB/SD inputs for ThumbDrives and Memory Cards for files

Pros and Cons of DVD Built into Monitor or External DVD System:
May not be important compared to personal preference but worth considering.
External:
+ This type System allows for bigger/better/more equip per cost.
+ After warranty if one part fails only it needs replaced vs allinone.
+ More options, configurations, features can be done with separates.
+ Upgrade possibilities for more, update technology of the source, etc.
- Install Labor could take slightly longer than a built in dvd all in one.
Built In:
+ May be easier saving time to install or cost less to have done.
+ Takes up less space in the vehicle with DVD / LCD combined.
- DVD and Monitors tend to have different lifespans to last or outdate.
- Headrests DVD at back of front heads (loading, vibration, audibles, heat).
- Overhead next to roof metal at outside of vehicle more subject to heat/cold.
- All-in-Ones offer little if any options for expansion of features or upgrading.
- Costs considerably more for equal size/features in same quality vs separates

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Audio Options for Video another important factor, how Sources are heard
Private Listening or Car Stereo Playback, One or More Sources ?

Wireless Headphones - Private Listening
Several types (see Headphones Guide) with IR being the most popular.
IR requires line of sight but provides clean audio over a locked frequency.
IR consumes less battery power to operate and has the best quality per price.
Available in Single Channel and also Dual Channel for 2 Sources to play at once.

Car Stereo Integration - Play it Outloud
-FM Mods and Emitters both serve a similar function sending Audio to FM Radio.
Modulators are normally a wired version which connects inline with car antenna.
Emitters are wirelss sending the audio over the air to receive by your car stereo.
-OEM Integration is the best quality alternative but also the most expenisve to add.
If not oem equipped Adapters are available at a price for converting most vehicles.

Dual Zone Speakers - 2 Outlouds ? Music / Movie Audio Together ?
Can be large enough to compete with Car Stereo 30-300+ Watts Power.
2 Full Volumes Same Space ? Effective ? Try it at home and see ? (No?).
Built Into Video Speakers - Not much use in Vehicle Environment.
Commonly Built in Speakers range from less than 1 to 5 Watts Power.
Can be of use in a non-moving quiet vehicle, not adequate over road noise.
Not enough to compete with Car Stereo, Outloud Audio is best thru Radio.

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Other Optional Features that can be added on or some built in
TV Tuners - Can be built in or external to receive local TV broudcasts.
USB/SD in - allows for memory card and USB compatible media devices.
Aux Input - AV inputs allow adding a game or other device into the system.
Power Inverter - require for 110VAC electronics used on 12VDC car power.
Many others are available even Sat TV and Internet for big budget systems.

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