[BUG]

[Pactera-wanpingzhang]

Describe the bug
Show wrong things when video has no sddefault.webp
When YoutubePlayer.thumbnailUrl is null, it's default ThumbnailQuality.standard.
So player use this image to be dafault thumb:

https://i3.ytimg.com/vi_webp/<video_id>/sddefault.webp

Example:

https://i3.ytimg.com/vi_webp/ihOkavVCtlU/sddefault.webp

But when this link got a HTTP 404, things go wrong.

To Reproduce
Steps to reproduce the behavior:
Just use a videoID has no sddefault.webp

Expected behavior
Use a lower quality thumb.

Screenshots

Technical Details:

• Device: iPhone any
• OS: iOS Any

Additional context

flutter: ══╡ EXCEPTION CAUGHT BY IMAGE RESOURCE SERVICE ╞════════════════════════════════════════════════════
flutter: The following NetworkImageLoadException was thrown resolving an image codec:
flutter: HTTP request failed, statusCode: 404, https://i3.ytimg.com/vi_webp/ihOkavVCtlU/sddefault.webp
flutter:
flutter: When the exception was thrown, this was the stack:
flutter: #0 NetworkImage._loadAsync (package:flutter/src/painting/_network_image_io.dart:95:9)
flutter:
flutter: #1 NetworkImage.load (package:flutter/src/painting/_network_image_io.dart:48:14)
flutter: #2 ImageProvider.resolveStreamForKey. (package:flutter/src/painting/image_provider.dart:501:13)
flutter: #3 ImageCache.putIfAbsent (package:flutter/src/painting/image_cache.dart:359:22)
flutter: #4 ImageProvider.resolveStreamForKey (package:flutter/src/painting/image_provider.dart:499:80)
flutter: #5 ScrollAwareImageProvider.resolveStreamForKey (package:flutter/src/widgets/scroll_aware_image_provider.dart:106:19)
flutter: #6 ImageProvider.resolve. (package:flutter/src/painting/image_provider.dart:330:9)
flutter: #7 ImageProvider._createErrorHandlerAndKey.. (package:flutter/src/painting/image_provider.dart:460:26)
flutter: #8 SynchronousFuture.then (package:flutter/src/foundation/synchronous_future.dart:41:29)
flutter: #9 ImageProvider._createErrorHandlerAndKey. (package:flutter/src/painting/image_provider.dart:457:11)
flutter: #13 ImageProvider._createErrorHandlerAndKey (package:flutter/src/painting/image_provider.dart:449:16)
flutter: #14 ImageProvider.resolve (package:flutter/src/painting/image_provider.dart:327:5)
flutter: #15 _ImageState._resolveImage (package:flutter/src/widgets/image.dart:1099:16)
flutter: #16 _ImageState.didChangeDependencies (package:flutter/src/widgets/image.dart:1052:5)
flutter: #17 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4661:12)
flutter: #18 ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
flutter: ... Normal element mounting (12 frames)
flutter: #30 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
flutter: #31 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5947:32)
flutter: ... Normal element mounting (81 frames)
flutter: #112 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
flutter: #113 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5947:32)
flutter: #114 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
flutter: #115 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5947:32)
flutter: ... Normal element mounting (50 frames)
flutter: #165 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
flutter: #166 Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
flutter: #167 SliverMultiBoxAdaptorElement.updateChild (package:flutter/src/widgets/sliver.dart:1162:36)
flutter: #168 SliverMultiBoxAdaptorElement.createChild. (package:flutter/src/widgets/sliver.dart:1147:20)
flutter: #169 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2607:19)
flutter: #170 SliverMultiBoxAdaptorElement.createChild (package:flutter/src/widgets/sliver.dart:1140:11)
flutter: #171 RenderSliverMultiBoxAdaptor._createOrObtainChild. (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:354:23)
flutter: #172 RenderObject.invokeLayoutCallback. (package:flutter/src/rendering/object.dart:1866:58)
flutter: #173 PipelineOwner._enableMutationsToDirtySubtrees (package:flutter/src/rendering/object.dart:918:15)
flutter: #174 RenderObject.invokeLayoutCallback (package:flutter/src/rendering/object.dart:1866:13)
flutter: #175 RenderSliverMultiBoxAdaptor._createOrObtainChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:343:5)
flutter: #176 RenderSliverMultiBoxAdaptor.insertAndLayoutChild (package:flutter/src/rendering/sliver_multi_box_adaptor.dart:489:5)
flutter: #177 RenderSliverList.performLayout.advance (package:flutter/src/rendering/sliver_list.dart:219:19)
flutter: #178 RenderSliverList.performLayout (package:flutter/src/rendering/sliver_list.dart:262:19)
flutter: #179 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #180 RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:135:11)
flutter: #181 RenderSliverPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:375:11)
flutter: #182 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #183 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:452:13)
flutter: #184 RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1444:12)
flutter: #185 RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1353:20)
flutter: #186 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #187 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #188 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #189 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #190 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #191 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #192 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #193 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #194 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #195 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #196 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #197 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #198 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #199 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #200 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #201 RenderConstrainedBox.performLayout (package:flutter/src/rendering/proxy_box.dart:266:13)
flutter: #202 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #203 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #204 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #205 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #206 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #207 RenderSliverFixedExtentBoxAdaptor.performLayout (package:flutter/src/rendering/sliver_fixed_extent_list.dart:246:18)
flutter: #208 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #209 RenderSliverEdgeInsetsPadding.performLayout (package:flutter/src/rendering/sliver_padding.dart:135:11)
flutter: #210 _RenderSliverFractionalPadding.performLayout (package:flutter/src/widgets/sliver_fill.dart:168:11)
flutter: #211 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #212 RenderViewportBase.layoutChildSequence (package:flutter/src/rendering/viewport.dart:452:13)
flutter: #213 RenderViewport._attemptLayout (package:flutter/src/rendering/viewport.dart:1444:12)
flutter: #214 RenderViewport.performLayout (package:flutter/src/rendering/viewport.dart:1353:20)
flutter: #215 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #216 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #217 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #218 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #219 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #220 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #221 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #222 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #223 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #224 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #225 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #226 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #227 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #228 RenderFlex.performLayout (package:flutter/src/rendering/flex.dart:808:17)
flutter: #229 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #230 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:171:11)
flutter: #231 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:484:7)
flutter: #232 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:240:7)
flutter: #233 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:399:14)
flutter: #234 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #235 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #236 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #237 RenderProxyBoxMixin.performLayout (package:flutter/src/rendering/proxy_box.dart:111:13)
flutter: #238 _RenderCustomClip.performLayout (package:flutter/src/rendering/proxy_box.dart:1248:11)
flutter: #239 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #240 RenderStack.performLayout (package:flutter/src/rendering/stack.dart:556:15)
flutter: #241 RenderObject.layout (package:flutter/src/rendering/object.dart:1767:7)
flutter: #242 MultiChildLayoutDelegate.layoutChild (package:flutter/src/rendering/custom_layout.dart:171:11)
flutter: #243 _ScaffoldLayout.performLayout (package:flutter/src/material/scaffold.dart:484:7)
flutter: #244 MultiChildLayoutDelegate._callPerformLayout (package:flutter/src/rendering/custom_layout.dart:240:7)
flutter: #245 RenderCustomMultiChildLayoutBox.performLayout (package:flutter/src/rendering/custom_layout.dart:399:14)
flutter: #246 RenderObject._layoutWithoutResize (package:flutter/src/rendering/object.dart:1630:7)
flutter: #247 PipelineOwner.flushLayout (package:flutter/src/rendering/object.dart:887:18)
flutter: #248 RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:402:19)
flutter: #249 WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:884:13)
flutter: #250 RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:284:5)
flutter: #251 SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1113:15)
flutter: #252 SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1052:9)
flutter: #253 SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:968:5)
flutter: #257 _invoke (dart:ui/hooks.dart:261:10)
flutter: #258 _drawFrame (dart:ui/hooks.dart:219:3)
flutter: (elided 6 frames from dart:async)
flutter:
flutter: Image provider: NetworkImage("https://i3.ytimg.com/vi_webp/ihOkavVCtlU/sddefault.webp", scale: 1.0)
flutter: Image key: NetworkImage("https://i3.ytimg.com/vi_webp/ihOkavVCtlU/sddefault.webp", scale: 1.0)
flutter: ════════════════════════════════════════════════════════════════════════════════════════════════════
flutter: Another exception was thrown: HTTP request failed, statusCode: 404, https://i3.ytimg.com/vi_webp/ihOkavVCtlU/sddefault.webp

[sarbagyastha]

Duplicate of #164