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2.3 Video timing reference codes (SAV and EAV) 

There are two timing reference codes, one at the beginning of each video data block (start of active video, SAV) and the other at the end of each video data block (end of active video, EAV). These codes are contiguous with the video data, and continue during the field/frame blanking interval, as shown in Fig. 1.  

A low-dropout or LDO regulator is a DC linear voltage regulator that can regulate the output voltage even when the supply voltage is very close to the output voltage.[1] The advantages of a low dropout voltage regulator over other DC to DC regulators include the absence of switching noise (as no switching takes place), smaller device size (as neither large inductors nor transformers are needed), and greater design simplicity (usually consists of a reference, an amplifier, and a pass element). A significant disadvantage is that, unlike switching regulators, linear DC regulators must dissipate power across the regulation device in order to regulate the output voltage 

avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58

         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : COM6

         Using Programmer              : arduino

         Overriding Baud Rate          : 57600

         AVR Part                      : ATmega328P 

Binary sketch size: 1,084 bytes (of a 30,720 byte maximum)

D:/arduino-1.0.4/hardware/tools/avr/bin/avrdude -CD:/arduino-1.0.4/hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega328p -carduino -P.COM22 -b57600 -D -Uflash:w:C:/Users/aSensar/AppData/Local/Tempbuild1227546797508918322.tmpBlink.cpp.hex:i 

If you only want to convert mkv to mp4 then you will save quality and a lot of time by just changing the containers. Both of these are just wrappers over the same content so the cpu only needs to do a little work. Don't re encode as you will definitely lose quality.

It's very straight forward using ffmpeg:

ffmpeg -i LostInTranslation.mkv -vcodec copy -acodec copy LostInTranslation.mp4

Here, you are copying the video codec and audio codec so nothing is being encoded.

Tip:

To convert all the mkv files in current directory, run a simple loop in terminal:

for i in *mkv; do ffmpeg -i $i -vcodec copy -acodec copy $i.mp4; done