feat(M1): Fabric scaffold for MC 1.21.6 with /videoStick

- video_player mod id, 영상재생모드 display name
- VideoAnchorBlock + VideoAnchorBlockEntity (placeholder)
- VideoStickItem
- /videoStick (+ /videostick alias) command gives the stick
- gradle 9.5.1 wrapper, fabric-loom 1.16.2, Java 21 toolchain
- works in both singleplayer and dedicated server (environment: *)

.gitignore

@@ -0,0 +1,8 @@
+.gradle/
+build/
+out/
+.idea/
+.vscode/
+*.iml
+.fabric/
+run/

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 tkrmagid
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

@@ -1 +1,29 @@
-# mc_video_player_mod
+# video_player (영상재생모드)
+
+마인크래프트(Fabric, MC 1.21.6+) 안에서 임의의 mp4 URL을 블록 표면에 재생하는 모드.
+
+- 모드 ID: `video_player`
+- 한글명: 영상재생모드
+- 로더: Fabric (싱글플레이어 / 전용 서버 양쪽 지원)
+- 명세: 별도 SPEC 문서 참조
+
+## 빌드
+
+```sh
+JAVA_HOME=/usr/lib/jvm/java-21-openjdk-amd64 ./gradlew build
+```
+
+산출물: `build/libs/video_player-<version>.jar`
+
+## 현재 진행도
+
+이 저장소는 SPEC §10 마일스톤을 순차적으로 채우는 중입니다.
+
+- **M1 — 스캐폴드** (현재): Fabric 모드 골격, 비디오 앵커 블록/엔티티 등록, 비디오 스틱 아이템, `/videoStick` 명령.
+- M2 — 정적 렌더
+- M3 — JavaCV mp4 재생
+- M4 — GUI / 네트워크
+- M5 — 좌클릭 삭제 + `/videoPlace`, `/videoDelete`
+- M6 — 오디오 + 거리감 + Mute(소리 on/off)
+- M7 — WaterMedia 백엔드 + 자동 선택
+- M8 — Stonecutter 멀티버전

build.gradle

@@ -0,0 +1,53 @@
+plugins {
+    id 'fabric-loom' version '1.16.2'
+    id 'maven-publish'
+    id 'java'
+}
+
+version = project.mod_version
+group = project.maven_group
+
+base {
+    archivesName = project.archives_base_name
+}
+
+repositories {
+    mavenCentral()
+    maven { url = 'https://maven.fabricmc.net/' }
+}
+
+dependencies {
+    minecraft "com.mojang:minecraft:${project.minecraft_version}"
+    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
+    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+}
+
+processResources {
+    inputs.property "version", project.version
+    inputs.property "mod_id", project.mod_id
+
+    filesMatching("fabric.mod.json") {
+        expand "version": project.version, "mod_id": project.mod_id
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    it.options.release = 21
+}
+
+java {
+    withSourcesJar()
+    sourceCompatibility = JavaVersion.VERSION_21
+    targetCompatibility = JavaVersion.VERSION_21
+
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+jar {
+    from("LICENSE") {
+        rename { "${it}_${project.archives_base_name}" }
+    }
+}

gradle.properties

@@ -0,0 +1,14 @@
+org.gradle.jvmargs=-Xmx2G
+org.gradle.parallel=true
+
+# Mod
+mod_id=video_player
+mod_version=0.1.0
+maven_group=com.ejclaw.videoplayer
+archives_base_name=video_player
+
+# Minecraft / Fabric (1.21.6)
+minecraft_version=1.21.6
+yarn_mappings=1.21.6+build.1
+loader_version=0.19.2
+fabric_version=0.120.1+1.21.6

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,9 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.1-bin.zip
+networkTimeout=10000
+retries=0
+retryBackOffMs=500
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/3d91ce3b8caaf77ad09f381f43615b715b53f72c/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,82 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables, and ensure extensions are enabled
+setlocal EnableExtensions
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+"%COMSPEC%" /c exit 1
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+"%COMSPEC%" /c exit 1
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
+@rem which allows us to clear the local environment before executing the java command
+endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel
+
+:exitWithErrorLevel
+@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
+"%COMSPEC%" /c exit %ERRORLEVEL%

settings.gradle

@@ -0,0 +1,12 @@
+pluginManagement {
+    repositories {
+        maven {
+            name = 'Fabric'
+            url = 'https://maven.fabricmc.net/'
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+rootProject.name = 'video_player'

src/main/java/com/ejclaw/videoplayer/VideoPlayerClient.java

@@ -0,0 +1,15 @@
+package com.ejclaw.videoplayer;
+
+import net.fabricmc.api.ClientModInitializer;
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+
+@Environment(EnvType.CLIENT)
+public class VideoPlayerClient implements ClientModInitializer {
+    @Override
+    public void onInitializeClient() {
+        // M2+: BlockEntityRendererFactories.register(...)
+        // M5+: AttackBlockCallback for left-click delete
+        VideoPlayerMod.LOG.info("[{}] client initialized (M1 scaffold)", VideoPlayerMod.MOD_ID);
+    }
+}

src/main/java/com/ejclaw/videoplayer/VideoPlayerMod.java

@@ -0,0 +1,28 @@
+package com.ejclaw.videoplayer;
+
+import com.ejclaw.videoplayer.command.VideoStickCommand;
+import com.ejclaw.videoplayer.registry.VideoPlayerBlockEntities;
+import com.ejclaw.videoplayer.registry.VideoPlayerBlocks;
+import com.ejclaw.videoplayer.registry.VideoPlayerItems;
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class VideoPlayerMod implements ModInitializer {
+    public static final String MOD_ID = "video_player";
+    public static final Logger LOG = LoggerFactory.getLogger(MOD_ID);
+
+    @Override
+    public void onInitialize() {
+        VideoPlayerBlocks.register();
+        VideoPlayerBlockEntities.register();
+        VideoPlayerItems.register();
+
+        CommandRegistrationCallback.EVENT.register((dispatcher, registryAccess, env) -> {
+            VideoStickCommand.register(dispatcher);
+        });
+
+        LOG.info("[{}] initialized (M1 scaffold)", MOD_ID);
+    }
+}

src/main/java/com/ejclaw/videoplayer/block/VideoAnchorBlock.java

@@ -0,0 +1,28 @@
+package com.ejclaw.videoplayer.block;
+
+import com.mojang.serialization.MapCodec;
+import net.minecraft.block.AbstractBlock;
+import net.minecraft.block.Block;
+import net.minecraft.block.BlockEntityProvider;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.BlockWithEntity;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.util.math.BlockPos;
+
+public class VideoAnchorBlock extends BlockWithEntity implements BlockEntityProvider {
+    public static final MapCodec<VideoAnchorBlock> CODEC = createCodec(VideoAnchorBlock::new);
+
+    public VideoAnchorBlock(AbstractBlock.Settings settings) {
+        super(settings);
+    }
+
+    @Override
+    protected MapCodec<? extends BlockWithEntity> getCodec() {
+        return CODEC;
+    }
+
+    @Override
+    public BlockEntity createBlockEntity(BlockPos pos, BlockState state) {
+        return new VideoAnchorBlockEntity(pos, state);
+    }
+}

src/main/java/com/ejclaw/videoplayer/block/VideoAnchorBlockEntity.java

@@ -0,0 +1,40 @@
+package com.ejclaw.videoplayer.block;
+
+import com.ejclaw.videoplayer.registry.VideoPlayerBlockEntities;
+import net.minecraft.block.BlockState;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Direction;
+
+/**
+ * M1 placeholder. Holds the runtime fields described in SPEC §3.1; NBT persistence
+ * (ReadView/WriteView in 1.21.6) lands in M3/M4 alongside the playback and GUI work.
+ */
+public class VideoAnchorBlockEntity extends BlockEntity {
+    private String url = "";
+    private int width = 1;
+    private int height = 1;
+    private Direction facing = Direction.NORTH;
+    private boolean loop = true;
+    private float volume = 0.5F;
+    private boolean muted = false;
+    private boolean autoplay = true;
+
+    public VideoAnchorBlockEntity(BlockPos pos, BlockState state) {
+        super(VideoPlayerBlockEntities.VIDEO_ANCHOR, pos, state);
+    }
+
+    public String getUrl() { return url; }
+    public int getWidth() { return width; }
+    public int getHeight() { return height; }
+    public Direction getFacing() { return facing; }
+    public boolean isLoop() { return loop; }
+    public float getVolume() { return volume; }
+    public boolean isMuted() { return muted; }
+    public boolean isAutoplay() { return autoplay; }
+
+    public void setMuted(boolean muted) {
+        this.muted = muted;
+        markDirty();
+    }
+}

src/main/java/com/ejclaw/videoplayer/command/VideoStickCommand.java

@@ -0,0 +1,36 @@
+package com.ejclaw.videoplayer.command;
+
+import com.ejclaw.videoplayer.registry.VideoPlayerItems;
+import com.mojang.brigadier.CommandDispatcher;
+import net.minecraft.item.ItemStack;
+import net.minecraft.server.command.CommandManager;
+import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.text.Text;
+
+public final class VideoStickCommand {
+    private VideoStickCommand() {}
+
+    public static void register(CommandDispatcher<ServerCommandSource> dispatcher) {
+        dispatcher.register(CommandManager.literal("videoStick")
+            .executes(ctx -> run(ctx.getSource())));
+        // Lowercase alias — Brigadier is case-sensitive.
+        dispatcher.register(CommandManager.literal("videostick")
+            .executes(ctx -> run(ctx.getSource())));
+    }
+
+    private static int run(ServerCommandSource source) {
+        ServerPlayerEntity player = source.getPlayer();
+        if (player == null) {
+            source.sendError(Text.literal("플레이어만 이 명령을 사용할 수 있습니다."));
+            return 0;
+        }
+        ItemStack stack = new ItemStack(VideoPlayerItems.VIDEO_STICK);
+        boolean inserted = player.getInventory().insertStack(stack);
+        if (!inserted || !stack.isEmpty()) {
+            player.dropItem(stack, false);
+        }
+        source.sendFeedback(() -> Text.literal("비디오 스틱을 지급했습니다."), false);
+        return 1;
+    }
+}

src/main/java/com/ejclaw/videoplayer/item/VideoStickItem.java

@@ -0,0 +1,12 @@
+package com.ejclaw.videoplayer.item;
+
+import net.minecraft.item.Item;
+
+/**
+ * M1: registered placeholder. Right/left-click handlers land in M4–M5.
+ */
+public class VideoStickItem extends Item {
+    public VideoStickItem(Settings settings) {
+        super(settings);
+    }
+}

src/main/java/com/ejclaw/videoplayer/registry/VideoPlayerBlockEntities.java

@@ -0,0 +1,23 @@
+package com.ejclaw.videoplayer.registry;
+
+import com.ejclaw.videoplayer.VideoPlayerMod;
+import com.ejclaw.videoplayer.block.VideoAnchorBlockEntity;
+import net.fabricmc.fabric.api.object.builder.v1.block.entity.FabricBlockEntityTypeBuilder;
+import net.minecraft.block.entity.BlockEntityType;
+import net.minecraft.registry.Registries;
+import net.minecraft.registry.Registry;
+import net.minecraft.util.Identifier;
+
+public final class VideoPlayerBlockEntities {
+    private VideoPlayerBlockEntities() {}
+
+    public static final BlockEntityType<VideoAnchorBlockEntity> VIDEO_ANCHOR = Registry.register(
+        Registries.BLOCK_ENTITY_TYPE,
+        Identifier.of(VideoPlayerMod.MOD_ID, "video_anchor"),
+        FabricBlockEntityTypeBuilder.create(VideoAnchorBlockEntity::new, VideoPlayerBlocks.VIDEO_ANCHOR).build()
+    );
+
+    public static void register() {
+        // class-load side effect triggers registration
+    }
+}

src/main/java/com/ejclaw/videoplayer/registry/VideoPlayerBlocks.java

@@ -0,0 +1,37 @@
+package com.ejclaw.videoplayer.registry;
+
+import com.ejclaw.videoplayer.VideoPlayerMod;
+import com.ejclaw.videoplayer.block.VideoAnchorBlock;
+import net.minecraft.block.AbstractBlock;
+import net.minecraft.block.Block;
+import net.minecraft.registry.Registries;
+import net.minecraft.registry.Registry;
+import net.minecraft.registry.RegistryKey;
+import net.minecraft.registry.RegistryKeys;
+import net.minecraft.util.Identifier;
+
+public final class VideoPlayerBlocks {
+    private VideoPlayerBlocks() {}
+
+    public static final Block VIDEO_ANCHOR = register(
+        "video_anchor",
+        AbstractBlock.Settings.create().strength(1.0F).nonOpaque(),
+        VideoAnchorBlock::new
+    );
+
+    public static void register() {
+        // class-load side effect triggers registration
+    }
+
+    @FunctionalInterface
+    private interface BlockFactory<B extends Block> {
+        B create(AbstractBlock.Settings settings);
+    }
+
+    private static <B extends Block> B register(String name, AbstractBlock.Settings settings, BlockFactory<B> factory) {
+        Identifier id = Identifier.of(VideoPlayerMod.MOD_ID, name);
+        RegistryKey<Block> key = RegistryKey.of(RegistryKeys.BLOCK, id);
+        B block = factory.create(settings.registryKey(key));
+        return Registry.register(Registries.BLOCK, key, block);
+    }
+}

src/main/java/com/ejclaw/videoplayer/registry/VideoPlayerItems.java

@@ -0,0 +1,35 @@
+package com.ejclaw.videoplayer.registry;
+
+import com.ejclaw.videoplayer.VideoPlayerMod;
+import com.ejclaw.videoplayer.item.VideoStickItem;
+import net.minecraft.item.Item;
+import net.minecraft.registry.Registries;
+import net.minecraft.registry.Registry;
+import net.minecraft.registry.RegistryKey;
+import net.minecraft.registry.RegistryKeys;
+import net.minecraft.util.Identifier;
+
+public final class VideoPlayerItems {
+    private VideoPlayerItems() {}
+
+    public static final Item VIDEO_STICK = register(
+        "video_stick",
+        settings -> new VideoStickItem(settings.maxCount(1))
+    );
+
+    public static void register() {
+        // For M1 we don't add to a vanilla item group; players get the stick via /videoStick.
+    }
+
+    @FunctionalInterface
+    private interface ItemFactory<I extends Item> {
+        I create(Item.Settings settings);
+    }
+
+    private static <I extends Item> I register(String name, ItemFactory<I> factory) {
+        Identifier id = Identifier.of(VideoPlayerMod.MOD_ID, name);
+        RegistryKey<Item> key = RegistryKey.of(RegistryKeys.ITEM, id);
+        I item = factory.create(new Item.Settings().registryKey(key));
+        return Registry.register(Registries.ITEM, key, item);
+    }
+}

src/main/resources/assets/video_player/lang/en_us.json

@@ -0,0 +1,4 @@
+{
+  "block.video_player.video_anchor": "Video Anchor",
+  "item.video_player.video_stick": "Video Stick"
+}

src/main/resources/assets/video_player/lang/ko_kr.json

@@ -0,0 +1,4 @@
+{
+  "block.video_player.video_anchor": "영상 앵커",
+  "item.video_player.video_stick": "비디오 스틱"
+}

src/main/resources/fabric.mod.json

@@ -0,0 +1,24 @@
+{
+  "schemaVersion": 1,
+  "id": "${mod_id}",
+  "version": "${version}",
+  "name": "영상재생모드",
+  "description": "Play arbitrary mp4 URLs on block surfaces in Minecraft (Fabric).",
+  "authors": [ "tkrmagid" ],
+  "contact": {
+    "homepage": "https://git.tkrmagid.kr/tkrmagid/mc_video_player_mod",
+    "sources": "https://git.tkrmagid.kr/tkrmagid/mc_video_player_mod"
+  },
+  "license": "MIT",
+  "environment": "*",
+  "entrypoints": {
+    "main": [ "com.ejclaw.videoplayer.VideoPlayerMod" ],
+    "client": [ "com.ejclaw.videoplayer.VideoPlayerClient" ]
+  },
+  "depends": {
+    "fabricloader": ">=0.16.0",
+    "fabric-api": "*",
+    "minecraft": ">=1.21.6",
+    "java": ">=21"
+  }
+}