[!] The 'Pods-Runner' target has frameworks with conflicting names: mobileffmpeg.framework, libavcodec.framework, libavdevice.framework, libavfilter.framework, libavformat.framework, libavutil.framework, libswresample.framework, libswscale.framework, libcharset.framework, and libiconv.framework.

[2534290808]

This error [!] The 'Pods-Runner' target has frameworks with conflicting names: mobileffmpeg.framework, libavcodec.framework, libavdevice.framework, libavfilter.framework, libavformat.framework, libavutil.framework, libswresample.framework, libswscale.framework, libcharset.framework, and libiconv.framework. occurred when I ran pod update --verbose --no-rep-update

[2534290808]

My environment is

`[✓] Flutter (Channel stable, v1.7.8+hotfix.4, on Mac OS X 10.14.6 18G95, locale
    zh-Hans-CN)
    • Flutter version 1.7.8+hotfix.4 at /Users/makisu/development/flutter
    • Framework revision 20e59316b8 (4 months ago), 2019-07-18 20:04:33 -0700
    • Engine revision fee001c93f
    • Dart version 2.4.0

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at /Users/makisu/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling
      support)
    • Platform android-29, build-tools 29.0.2
    • ANDROID_HOME = /Users/makisu/Library/Android/sdk
    • Java binary at: /Applications/Android
      Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build
      1.8.0_202-release-1483-b49-5587405)
    ! Some Android licenses not accepted.  To resolve this, run: flutter doctor
      --android-licenses

[✓] Xcode - develop for iOS and macOS (Xcode 11.0)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 11.0, Build version 11A420a
    • CocoaPods version 1.8.4`

[tanersener]

Can you please share your pubspec.yaml and Podfile?

[2534290808]

pubspec.yaml

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 3.0.9+3000009

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  flutter_cache_manager: ^1.1.1
  uuid: ^2.0.0
  palette_generator: ^0.1.0
  flutter_webview_plugin:
    git: https://github.com/fluttercommunity/flutter_webview_plugin.git
  webview_flutter: ^0.3.3+1
  video_player: ^0.10.0+2
  camera: ^0.5.2+1
  # 用来模拟网络返回的数据，这些数据是真实的，这里模拟
  dio: ^2.1.0
  fluttertoast: ^3.0.4
  event_bus: ^1.1.0
  # 缓存
  shared_preferences: ^0.4.0
  jpush_flutter: 0.1.0
  device_info: ^0.4.0+2
  connectivity: ^0.4.2
  # status bar
  flutter_statusbar: ^0.0.1
  # 适配
  flutter_screenutil: ^0.5.2
  #
  flutter_spinkit: ^3.1.0
  crypto: ^2.0.6
  intl: ^0.15.8
  xml: ^3.4.1
  html: ^0.14.0+2
  image_picker: ^0.6.0+17
  # 图片信息
  exif: ^1.0.1
  # 图片处理
  flutter_image_compress: ^0.6.3
  # 视频处理
  flutter_video_compress: ^0.3.7+8
  fluro: ^1.5.1
  #数据流管理框架
  provider: ^3.1.0
  rxdart: ^0.22.1
  file_picker: ^1.3.8
  permission_handler: ^3.2.0
  flutter_sound: 1.4.7
  fluwx: ^1.0.4
  fake_weibo: 0.2.3
  flutter_swiper: ^1.1.6
  fake_tencent: 0.3.3
  image_saver: ^1.0.0
  cached_network_image: 1.1.1
  clippy_flutter: ^1.1.0
  qr_flutter: ^2.1.0
  json_annotation: ^2.0.0
  flutter_easyrefresh: ^2.0.4
  flutter_i18n: ^0.6.4
  audioplayers: ^0.13.1
  flutter_html: ^0.11.0
  hive: ^0.4.1+1
  # 0.9.8会导致flutter版本没有升级到最新版报错
  chewie: 0.9.7
  common_utils: ^1.1.3
  flutter_ffmpeg: ^0.2.7
  flutter_icons: ^0.3.1
  flutter_slidable: "^0.5.3"
  image_cropper: 1.0.2
  # 瀑布流
  flutter_staggered_grid_view: ^0.3.0
  animated_interpolation: ^0.3.2
  flutter_picker: ^1.0.15
  flutter_offline: ^0.2.4
  shimmer: ^1.0.1
  uni_links: ^0.2.0
  package_info: ^0.4.0+6
  url_launcher: ^5.1.4
  device_apps: ^1.0.8
  android_intent: ^0.3.3+2
  photo_view: ^0.8.0

dev_dependencies:
  flutter_test:
    sdk: flutter
  build_runner: ^1.0.0
  json_serializable: ^2.0.0

[2534290808]

Podfile

# Uncomment this line to define a global platform for your project
platform :ios, '9.3'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

pod 'Regift'

project 'Runner', {
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,
}

def parse_KV_file(file, separator='=')
  file_abs_path = File.expand_path(file)
  if !File.exists? file_abs_path
    return [];
  end
  pods_ary = []
  skip_line_start_symbols = ["#", "/"]
  File.foreach(file_abs_path) { |line|
      next if skip_line_start_symbols.any? { |symbol| line =~ /^\s*#{symbol}/ }
      plugin = line.split(pattern=separator)
      if plugin.length == 2
        podname = plugin[0].strip()
        path = plugin[1].strip()
        podpath = File.expand_path("#{path}", file_abs_path)
        pods_ary.push({:name => podname, :path => podpath});
      else
        puts "Invalid plugin specification: #{line}"
      end
  }
  return pods_ary
end

target 'Runner' do
  # use_frameworks!
  # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
  # referring to absolute paths on developers' machines.
  system('rm -rf .symlinks')
  system('mkdir -p .symlinks/plugins')

  # Flutter Pods
  generated_xcode_build_settings = parse_KV_file('./Flutter/Generated.xcconfig')
  if generated_xcode_build_settings.empty?
    puts "Generated.xcconfig must exist. If you're running pod install manually, make sure flutter packages get is executed first."
  end
  generated_xcode_build_settings.map { |p|
    if p[:name] == 'FLUTTER_FRAMEWORK_DIR'
      symlink = File.join('.symlinks', 'flutter')
      File.symlink(File.dirname(p[:path]), symlink)
      pod 'Flutter', :path => File.join(symlink, File.basename(p[:path]))
    end
  }

  # Plugin Pods
  plugin_pods = parse_KV_file('../.flutter-plugins')
  plugin_pods.map { |p|
    symlink = File.join('.symlinks', 'plugins', p[:name])
    File.symlink(p[:path], symlink)
    pod p[:name], :path => File.join(symlink, 'ios')
     if p[:name] == 'flutter_ffmpeg'
       pod p[:name]+'/audio-lts', :path => File.join(symlink, 'ios')
     else
         pod p[:name], :path => File.join(symlink, 'ios')
     end
  }
end

pre_install do |installer|
  installer.analysis_result.specifications.each do |s|
      if s.name == 'Regift'
        s.swift_version = '4.0'
      end
  end
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

[tanersener]

Your Podfile has an old format and something inside is causing mobile-ffmpeg library to be installed twice.

pod install
Analyzing dependencies
Downloading dependencies
Installing Flutter (1.0.0)
Installing Regift (1.5.0)
Installing flutter_ffmpeg (0.2.8)
Installing mobile-ffmpeg-audio (4.2.2.LTS)
Installing mobile-ffmpeg-https (4.3)

Can you update it using Podfile of our example app?

[2534290808]

I will give it a try

[2534290808]

I have solved this problem using Podfile in your example, thank you very much 😄 👍