From 2b3ca95ab587eabd0cdcc51cefe83ce49e24631f Mon Sep 17 00:00:00 2001
From: cloudwebrtc <duanweiwei1982@gmail.com>
Date: Mon, 27 Nov 2023 10:50:52 +0800
Subject: [PATCH] first commit.

---
 README.md       |   8 +-
 pubspec.lock    | 613 ++++++++++++++++++++++++++++++++++++++++++++++++
 pubspec.yaml    |  19 ++
 web/favicon.ico | Bin 0 -> 3559 bytes
 web/index.html  |  23 ++
 web/main.dart   |  27 +++
 web/styles.css  |  14 ++
 7 files changed, 703 insertions(+), 1 deletion(-)
 create mode 100644 pubspec.lock
 create mode 100644 pubspec.yaml
 create mode 100644 web/favicon.ico
 create mode 100644 web/index.html
 create mode 100644 web/main.dart
 create mode 100644 web/styles.css

diff --git a/README.md b/README.md
index 4d39cf6..5857573 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,7 @@
-# dart-video-element-flicker-demo
\ No newline at end of file
+# dart-video-element-flicker-demo
+
+## How to develop
+
+* `dart pub get`
+* `dart pub global activate webdev`
+* `webdev serve --auto=refresh`
diff --git a/pubspec.lock b/pubspec.lock
new file mode 100644
index 0000000..86d3f18
--- /dev/null
+++ b/pubspec.lock
@@ -0,0 +1,613 @@
+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: "36a321c3d2cbe01cbcb3540a87b8843846e0206df3e691fa7b23e19e78de6d49"
+      url: "https://pub.dev"
+    source: hosted
+    version: "65.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: dfe03b90ec022450e22513b5e5ca1f01c0c01de9c3fba2f7fd233cb57a6b9a07
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.3.0"
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: "7b875fd4a20b165a3084bd2d210439b22ebc653f21cea4842729c0c30c82596b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.4.9"
+  args:
+    dependency: transitive
+    description:
+      name: args
+      sha256: eef6c46b622e0494a36c5a12d10d77fb4e855501a91c1b9ef9339326e58f0596
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.2"
+  async:
+    dependency: transitive
+    description:
+      name: async
+      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.0"
+  bazel_worker:
+    dependency: transitive
+    description:
+      name: bazel_worker
+      sha256: "6f306845d941808bed2fdbd7db3a39de273a8248a9303cfebf0cfa861372616e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  build:
+    dependency: transitive
+    description:
+      name: build
+      sha256: "80184af8b6cb3e5c1c4ec6d8544d27711700bc3e6d2efad04238c7b5290889f0"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  build_config:
+    dependency: transitive
+    description:
+      name: build_config
+      sha256: bf80fcfb46a29945b423bd9aad884590fb1dc69b330a4d4700cac476af1708d1
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
+  build_daemon:
+    dependency: transitive
+    description:
+      name: build_daemon
+      sha256: "0343061a33da9c5810b2d6cee51945127d8f4c060b7fbdd9d54917f0a3feaaa1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.1"
+  build_modules:
+    dependency: transitive
+    description:
+      name: build_modules
+      sha256: bd2e3693a33761fce4260704fcfa519042573457c8cf61c50249a7dde2fbe5e1
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.0.5"
+  build_resolvers:
+    dependency: transitive
+    description:
+      name: build_resolvers
+      sha256: "64e12b0521812d1684b1917bc80945625391cb9bdd4312536b1d69dcb6133ed8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.1"
+  build_runner:
+    dependency: "direct dev"
+    description:
+      name: build_runner
+      sha256: "10c6bcdbf9d049a0b666702cf1cee4ddfdc38f02a19d35ae392863b47519848b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.6"
+  build_runner_core:
+    dependency: transitive
+    description:
+      name: build_runner_core
+      sha256: c9e32d21dd6626b5c163d48b037ce906bbe428bc23ab77bcd77bb21e593b6185
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.11"
+  build_web_compilers:
+    dependency: "direct dev"
+    description:
+      name: build_web_compilers
+      sha256: "70d67a571b068aa0b8f5569fea8f2d91647731643ad6d744f9035b47eefb2ace"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.7"
+  built_collection:
+    dependency: transitive
+    description:
+      name: built_collection
+      sha256: "376e3dd27b51ea877c28d525560790aee2e6fbb5f20e2f85d5081027d94e2100"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.1.1"
+  built_value:
+    dependency: transitive
+    description:
+      name: built_value
+      sha256: "69acb7007eb2a31dc901512bfe0f7b767168be34cb734835d54c070bfa74c1b2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.8.0"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: feb6bed21949061731a7a75fc5d2aa727cf160b91af9a3e464c5e3a32e28b5ff
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.3"
+  code_builder:
+    dependency: transitive
+    description:
+      name: code_builder
+      sha256: b2151ce26a06171005b379ecff6e08d34c470180ffe16b8e14b6d52be292b55f
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.8.0"
+  collection:
+    dependency: "direct main"
+    description:
+      name: collection
+      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.18.0"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: "0f08b14755d163f6e2134cb58222dd25ea2a2ee8a195e53983d57c075324d592"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  coverage:
+    dependency: transitive
+    description:
+      name: coverage
+      sha256: ac86d3abab0f165e4b8f561280ff4e066bceaac83c424dd19f1ae2c2fcd12ca9
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.7.1"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.3"
+  dart_style:
+    dependency: transitive
+    description:
+      name: dart_style
+      sha256: "40ae61a5d43feea6d24bd22c0537a6629db858963b99b4bc1c3db80676f32368"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.4"
+  events2:
+    dependency: transitive
+    description:
+      name: events2
+      sha256: "41eec2689af52ecd2581494b9241589769b2873359909c9260588e51fbc188e7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
+  file:
+    dependency: transitive
+    description:
+      name: file
+      sha256: "5fc22d7c25582e38ad9a8515372cd9a93834027aacf1801cf01164dac0ffa08c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.0"
+  fixnum:
+    dependency: transitive
+    description:
+      name: fixnum
+      sha256: "25517a4deb0c03aa0f32fd12db525856438902d9c16536311e76cdc57b31d7d1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  frontend_server_client:
+    dependency: transitive
+    description:
+      name: frontend_server_client
+      sha256: "408e3ca148b31c20282ad6f37ebfa6f4bdc8fede5b74bc2f08d9d92b55db3612"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: "0e7014b3b7d4dac1ca4d6114f82bf1782ee86745b9b42a92c9289c23d8a0ab63"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  graphs:
+    dependency: transitive
+    description:
+      name: graphs
+      sha256: aedc5a15e78fc65a6e23bcd927f24c64dd995062bcd1ca6eda65a3cff92a4d19
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
+  http:
+    dependency: "direct dev"
+    description:
+      name: http
+      sha256: "5895291c13fa8a3bd82e76d5627f69e0d85ca6a30dcac95c4ea19a5d555879c2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.13.6"
+  http_multi_server:
+    dependency: transitive
+    description:
+      name: http_multi_server
+      sha256: "97486f20f9c2f7be8f514851703d0119c3596d14ea63227af6f7a481ef2b2f8b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.1"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.2"
+  import_sorter:
+    dependency: "direct dev"
+    description:
+      name: import_sorter
+      sha256: eb15738ccead84e62c31e0208ea4e3104415efcd4972b86906ca64a1187d0836
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.6.0"
+  io:
+    dependency: transitive
+    description:
+      name: io
+      sha256: "2ec25704aba361659e10e3e5f5d672068d332fc8ac516421d483a11e5cbd061e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  js:
+    dependency: transitive
+    description:
+      name: js
+      sha256: f2c445dce49627136094980615a031419f7f3eb393237e4ecd97ac15dea343f3
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.7"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: b10a7b2ff83d83c777edba3c6a0f97045ddadd56c944e1a23a3fdf43a1bf4467
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.8.1"
+  logging:
+    dependency: transitive
+    description:
+      name: logging
+      sha256: "623a88c9594aa774443aa3eb2d41807a48486b5613e67599fb4c41c0ad47c340"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.12.16"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      sha256: d584fa6707a52763a52446f02cc621b077888fb63b93bbcb1143a7be5a0c0c04
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: e4ff8e8564c03f255408decd16e7899da1733852a9110a58fe6d1b817684a63e
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  node_preamble:
+    dependency: transitive
+    description:
+      name: node_preamble
+      sha256: "6e7eac89047ab8a8d26cf16127b5ed26de65209847630400f9aefd7cd5c730db"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.2"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: "1c5b77ccc91e4823a5af61ee74e6b972db1ef98c2ff5a18d3161c982a55448bd"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.8.3"
+  pedantic:
+    dependency: "direct dev"
+    description:
+      name: pedantic
+      sha256: "67fc27ed9639506c856c840ccce7594d0bdcd91bc8d53d6e52359449a1d50602"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.1"
+  pointycastle:
+    dependency: transitive
+    description:
+      name: pointycastle
+      sha256: "7c1e5f0d23c9016c5bbd8b1473d0d3fb3fc851b876046039509e18e0c7485f2c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.7.3"
+  pool:
+    dependency: transitive
+    description:
+      name: pool
+      sha256: "20fe868b6314b322ea036ba325e6fc0711a22948856475e2c2b6306e8ab39c2a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.5.1"
+  protobuf:
+    dependency: transitive
+    description:
+      name: protobuf
+      sha256: "68645b24e0716782e58948f8467fd42a880f255096a821f9e7d0ec625b00c84d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.0"
+  protoo_client:
+    dependency: "direct dev"
+    description:
+      name: protoo_client
+      sha256: a17071440dfad0523b6327a33fe2053a3eebee22a5126109102096481d989a12
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.3"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "40d3ab1bbd474c4c2328c91e3a7df8c6dd629b79ece4c4bd04bee496a224fb0c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.4"
+  pubspec_parse:
+    dependency: transitive
+    description:
+      name: pubspec_parse
+      sha256: c63b2876e58e194e4b0828fcb080ad0e06d051cb607a6be51a9e084f47cb9367
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  retry:
+    dependency: transitive
+    description:
+      name: retry
+      sha256: "822e118d5b3aafed083109c72d5f484c6dc66707885e07c0fbcb8b986bba7efc"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+  scratch_space:
+    dependency: transitive
+    description:
+      name: scratch_space
+      sha256: "8510fbff458d733a58fc427057d1ac86303b376d609d6e1bc43f240aad9aa445"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.2"
+  shelf:
+    dependency: transitive
+    description:
+      name: shelf
+      sha256: ad29c505aee705f41a4d8963641f91ac4cee3c8fad5947e033390a7bd8180fa4
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.1"
+  shelf_packages_handler:
+    dependency: transitive
+    description:
+      name: shelf_packages_handler
+      sha256: "89f967eca29607c933ba9571d838be31d67f53f6e4ee15147d5dc2934fee1b1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.2"
+  shelf_static:
+    dependency: transitive
+    description:
+      name: shelf_static
+      sha256: a41d3f53c4adf0f57480578c1d61d90342cd617de7fc8077b1304643c2d85c1e
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.2"
+  shelf_web_socket:
+    dependency: transitive
+    description:
+      name: shelf_web_socket
+      sha256: "9ca081be41c60190ebcb4766b2486a7d50261db7bd0f5d9615f2d653637a84c1"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.4"
+  source_map_stack_trace:
+    dependency: transitive
+    description:
+      name: source_map_stack_trace
+      sha256: "84cf769ad83aa6bb61e0aa5a18e53aea683395f196a6f39c4c881fb90ed4f7ae"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
+  source_maps:
+    dependency: transitive
+    description:
+      name: source_maps
+      sha256: "708b3f6b97248e5781f493b765c3337db11c5d2c81c3094f10904bfa8004c703"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.10.12"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      sha256: "53e943d4206a5e30df338fd4c6e7a077e02254531b138a15aec3bd143c1a8b3c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.10.0"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      sha256: "73713990125a6d93122541237550ee3352a2d84baad52d375a4cad2eb9b7ce0b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.11.1"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.2"
+  stream_transform:
+    dependency: transitive
+    description:
+      name: stream_transform
+      sha256: "14a00e794c7c11aa145a170587321aedce29769c08d7f58b1d141da75e3b1c6f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      sha256: a29248a84fbb7c79282b40b8c72a1209db169a2e0542bce341da992fe1bc7e84
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  test:
+    dependency: "direct dev"
+    description:
+      name: test
+      sha256: a1f7595805820fcc05e5c52e3a231aedd0b72972cb333e8c738a8b1239448b6f
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.24.9"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      sha256: "5c2f730018264d276c20e4f1503fd1308dfbbae39ec8ee63c5236311ac06954b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.6.1"
+  test_core:
+    dependency: transitive
+    description:
+      name: test_core
+      sha256: a757b14fc47507060a162cc2530d9a4a2f92f5100a952c7443b5cad5ef5b106a
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.5.9"
+  timing:
+    dependency: transitive
+    description:
+      name: timing
+      sha256: "70a3b636575d4163c477e6de42f247a23b315ae20e86442bebe32d3cabf61c32"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.1"
+  tint:
+    dependency: transitive
+    description:
+      name: tint
+      sha256: "9652d9a589f4536d5e392cf790263d120474f15da3cf1bee7f1fdb31b4de5f46"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.2"
+  vm_service:
+    dependency: transitive
+    description:
+      name: vm_service
+      sha256: b3d56ff4341b8f182b96aceb2fa20e3dcb336b9f867bc0eafc0de10f1048e957
+      url: "https://pub.dev"
+    source: hosted
+    version: "13.0.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "3d2ad6751b3c16cf07c7fca317a1413b3f26530319181b37e3b9039b84fc01d8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
+  web_socket_channel:
+    dependency: transitive
+    description:
+      name: web_socket_channel
+      sha256: d88238e5eac9a42bb43ca4e721edba3c08c6354d4a53063afaa568516217621b
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.0"
+  webkit_inspection_protocol:
+    dependency: transitive
+    description:
+      name: webkit_inspection_protocol
+      sha256: "87d3f2333bb240704cd3f1c6b5b7acd8a10e7f0bc28c28dcf14e782014f4a572"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: "75769501ea3489fca56601ff33454fe45507ea3bfb014161abc3b43ae25989d5"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.2"
+sdks:
+  dart: ">=3.1.0 <3.4.0"
diff --git a/pubspec.yaml b/pubspec.yaml
new file mode 100644
index 0000000..a292a3a
--- /dev/null
+++ b/pubspec.yaml
@@ -0,0 +1,19 @@
+name: dart_video_element_flicker_test
+description: test video element flicker for dart html.
+version: 1.0.0
+homepage: https://github.com/flutter-webrtc/dart-webrtc
+
+environment:
+  sdk: '>=2.13.0 <4.0.0'
+
+dependencies:
+  collection: ^1.17.1
+  
+dev_dependencies:
+  build_runner: ^2.3.3
+  build_web_compilers: ^4.0.0
+  http: ^0.13.3
+  import_sorter: ^4.6.0
+  pedantic: ^1.9.0
+  protoo_client: ^0.3.0
+  test: ^1.15.4
\ No newline at end of file
diff --git a/web/favicon.ico b/web/favicon.ico
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diff --git a/web/index.html b/web/index.html
new file mode 100644
index 0000000..de10f52
--- /dev/null
+++ b/web/index.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+
+<html>
+<head>
+    <meta charset="utf-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta name="scaffolded-by" content="https://github.com/dart-lang/stagehand">
+    <title>dart_webrtc</title>
+    <link rel="stylesheet" href="styles.css">
+    <link rel="icon" href="favicon.ico">
+    <script defer src="main.dart.js"></script>
+</head>
+
+<body>
+  <div>
+    <button id="addVideo">+</button>
+    <button id="removeVideo">-</button>
+  </div>
+</br>
+  <div id="local_videos"></div>
+</body>
+</html>
diff --git a/web/main.dart b/web/main.dart
new file mode 100644
index 0000000..77fa1ac
--- /dev/null
+++ b/web/main.dart
@@ -0,0 +1,27 @@
+import 'dart:html' as html;
+
+html.MediaStream? _localStream;
+
+void main() async {
+  html.document.querySelector('#addVideo')?.onClick.listen((event) async {
+    print('add video');
+    if (_localStream == null) {
+      _localStream = await html.window.navigator.getUserMedia(video: true);
+    }
+    var local = html.document.querySelector('#local_videos');
+    var localVideo = html.VideoElement();
+    localVideo.style.width = '240px';
+    localVideo.style.height = '180px';
+    localVideo.style.border = '1px solid black';
+    localVideo.muted = true;
+    localVideo.autoplay = true;
+    local!.append(localVideo);
+    localVideo.srcObject = _localStream;
+  });
+
+  html.document.querySelector('#removeVideo')?.onClick.listen((event) async {
+    print('remove video');
+    var local = html.document.querySelector('#local_videos');
+    local!.children.last.remove();
+  });
+}
diff --git a/web/styles.css b/web/styles.css
new file mode 100644
index 0000000..cc035c9
--- /dev/null
+++ b/web/styles.css
@@ -0,0 +1,14 @@
+@import url(https://fonts.googleapis.com/css?family=Roboto);
+
+html, body {
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  font-family: 'Roboto', sans-serif;
+}
+
+#output {
+  padding: 20px;
+  text-align: center;
+}