Repository navigation
When load an animated webp image throws "SixLabors.ImageSharp.ImageFormatException: Unexpected chunk followed VP8X header" exception. #2154
Description
Prerequisites
- I have written a descriptive issue title
- I have verified that I am running the latest version of ImageSharp
- I have verified if the problem exist in both
DEBUGandRELEASEmode - I have searched open and closed issues to ensure it has not already been reported
ImageSharp version
2.1.2
Other ImageSharp packages and versions
SixLabors.ImageSharp.Drawing 1.0.0-beta14; Sixlabors.Fonts 1.0.0-beta17
Environment (Operating system, version and so on)
Win10 21H2
.NET Framework version
.net 5.0.402
Description
https://mathiasbynens.be/demo/animated-webp-supported.webp
I have seen the feature support PR, but I still cannot load animated webp images. Maybe the method I used is wrong.
Steps to Reproduce
- download the example image
- load with code
Image img = Image.Load(@"1.webp");then exception throws.
Unhandled exception. SixLabors.ImageSharp.ImageFormatException: Unexpected chunk followed VP8X header
at SixLabors.ImageSharp.Formats.Webp.WebpThrowHelper.ThrowImageFormatException(String errorMessage)
at SixLabors.ImageSharp.Formats.Webp.WebpDecoderCore.ReadVp8XHeader()
at SixLabors.ImageSharp.Formats.Webp.WebpDecoderCore.ReadVp8Info()
at SixLabors.ImageSharp.Formats.Webp.WebpDecoderCore.Decode[TPixel](BufferedReadStream stream, CancellationToken cancellationToken)
at SixLabors.ImageSharp.Formats.ImageDecoderUtilities.Decode[TPixel](IImageDecoderInternals decoder, Configuration configuration, Stream stream, Func`3
largeImageExceptionFactory, CancellationToken cancellationToken)
at SixLabors.ImageSharp.Formats.ImageDecoderUtilities.Decode[TPixel](IImageDecoderInternals decoder, Configuration configuration, Stream stream, Cancell
ationToken cancellationToken)
at SixLabors.ImageSharp.Formats.Webp.WebpDecoder.Decode[TPixel](Configuration configuration, Stream stream, CancellationToken cancellationToken)
at SixLabors.ImageSharp.Formats.Webp.WebpDecoder.Decode(Configuration configuration, Stream stream, CancellationToken cancellationToken)
at SixLabors.ImageSharp.Image.Decode(Stream stream, Configuration config, CancellationToken cancellationToken)
at SixLabors.ImageSharp.Image.<>c__DisplayClass134_0.<Load>b__0(Stream s)
at SixLabors.ImageSharp.Image.WithSeekableStream[T](Configuration configuration, Stream stream, Func`2 action)
at SixLabors.ImageSharp.Image.Load(Configuration configuration, Stream stream, IImageFormat& format)
at SixLabors.ImageSharp.Image.Load(Configuration configuration, String path, IImageFormat& format)
at SixLabors.ImageSharp.Image.Load(Configuration configuration, String path)
at SixLabors.ImageSharp.Image.Load(String path)
at BilibiliMonitor.Program.Main(String[] args) in E:\编程\程序c#\BilibiliMonitor\BilibiliMonitor\Program.cs:line 19
Activity
brianpopow commentedon Jun 16, 2022
Decoding animated webp images is not supported in 2.1.2, but the error message is wrong though. The expected error message should have been
NotSupportedException, but theANIMchunk is not recognized as an optional VP8X chunk.The error does not occur in
main. Decoding animated webp images was added recently with #1985. For missing webp features see #1802.You can try our nightly build to verify that.
Hellobaka commentedon Jun 16, 2022
Thank you. I tried the nightly build and the program successfully loaded the animated webp image. Hope this feature be added to stable branch soon. Thanks for all your work.
Fix #2154
Merge pull request #2157 from SixLabors/backport/2135-2154
marshafan commentedon Aug 29, 2023
i came into a different problem,as i uploaded the animated webp image above using 3.0.1(Sixlabor.ImageSharp.dll),and finally called saveAsync ,it produced a static webp which had just one frame.
By debugging,it showed that the Image instance as a result of Image.Load(byte[]),had a Frames property eqauled to 1.
What might be the reason?thank you for your answer^_^
JimBobSquarePants commentedon Aug 29, 2023
Then why did you comment on this closed issue?
marshafan commentedon Aug 29, 2023
sorry,i should create a new one..