demo_auto_record_fix.sp

#include<sourcemod>
#define PLUGIN_VERSION "1.1.0"

public Plugin:myinfo =
{
    name = "CS:GO DEMO Auto Record Fix",
    author = "Thiry",
    description = "fix demo crash caused by tv_autorecord 1.",
    version = PLUGIN_VERSION,
    url = "http://blog.five-seven.net/"
};
new Handle:cvar_tv_enable,
    Handle:cvar_tv_autorecord;

public OnPluginStart()
{
    cvar_tv_enable = FindConVar("tv_enable");
    cvar_tv_autorecord = FindConVar("tv_autorecord");
    HookConVarChange(cvar_tv_enable, Force_TV_Enable);
    HookConVarChange(cvar_tv_autorecord, Force_AutoRecord_Disable);
}
/**
 * called when cvar(tv_enable) has changed.
 *
 * @param Handle cvar handle of cvar(tv_enable)
 * @param String oldVal old value of cvar(tv_enable)
 * @param String newVal new value of cvar(tv_enable)
 */
public Force_TV_Enable(Handle:cvar, const String:oldVal[], const String:newVal[])
{
    PrintToServer("tv_enable is forced to 1");
    SetConVarInt(cvar, 1);// forced to 1
}
/**
 * called when cvar(tv_autorecord) has changed.
 *
 * @param Handle cvar handle of cvar(tv_autorecord)
 * @param String oldVal old value of cvar(tv_autorecord)
 * @param String newVal new value of cvar(tv_autorecord)
 */
public Force_AutoRecord_Disable(Handle:cvar, const String:oldVal[], const String:newVal[])
{
    PrintToServer("tv_autorecord is forced to 0");
    SetConVarInt(cvar, 0);//forced to 0
}

public OnMapStart()
{
    CreateTimer(5.0, StartRecord);
}

public Action:StartRecord(Handle:timer,any:client)
{
    new String:year[16],
        String:month[16],
        String:date[16],
        String:hour[16],
        String:minute[16],
        String:map[128];

    //tv_autorecord format
    FormatTime(year, sizeof(year), "%Y");
    FormatTime(month, sizeof(month), "%m");
    FormatTime(date, sizeof(date), "%d");
    FormatTime(hour, sizeof(hour), "%H");
    FormatTime(minute, sizeof(minute), "%M");
    GetCurrentMap(map,sizeof(map));

    //for workshop maps
    ReplaceString(map,sizeof(map),"/","_");//replace map name. "/"  to "_"

    //start record
    ServerCommand("tv_record auto-%s%s%s-%s%s-%s",year,month,date,hour,minute,map);
    PrintToServer("demo record has started.");
}