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https://issues.apache.org/jira/browse/IMAGING-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17739614#comment-17739614
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Gary D. Gregory commented on IMAGING-355:
-----------------------------------------
[~akhoury]
Thank you for your report.
Would you try building and using git master, or, use a snapshot build and see
if it helps?
Snapshot builds are here:
https://repository.apache.org/content/repositories/snapshots/org/apache/commons/commons-imaging/1.0-SNAPSHOT/
> Large animated GIF takes too much heap memory in getMetadata
> ------------------------------------------------------------
>
> Key: IMAGING-355
> URL: https://issues.apache.org/jira/browse/IMAGING-355
> Project: Commons Imaging
> Issue Type: Bug
> Components: Format: GIF
> Affects Versions: 1.0-alpha3
> Reporter: Andrew Khoury
> Priority: Major
> Attachments: commons-imaging-test.gif,
> image-2023-06-29-15-18-17-076.png, screenshot-1.png
>
>
> When calling ImageParser.getMetadata on large animated gif files, the java
> heap consumption is extremely high.
> For example, see the test project I created:
> [https://github.com/andrewmkhoury/commons-imaging-gif-test]
> When calling ImageParser.getMetadata on the attached 5MB gif
> [^commons-imaging-test.gif], it uses ~1.5GB of heap space. When the max heap
> is set to -Xmx1488M or lower it fails with this exception. When the heap is
> set to -Xmx1489M it works.
> {code:java}
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> at java.base/java.util.Arrays.copyOf(Arrays.java:3745)
> at
> java.base/java.io.ByteArrayOutputStream.toByteArray(ByteArrayOutputStream.java:211)
> at
> org.apache.commons.imaging.mylzw.MyLzwDecompressor.decompress(MyLzwDecompressor.java:143)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.readImageDescriptor(GifImageParser.java:881)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.readBlocks(GifImageParser.java:596)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.readFile(GifImageParser.java:696)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.readFile(GifImageParser.java:680)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.getMetadata(GifImageParser.java:485)
> at
> org.apache.commons.imaging.formats.gif.GifImageParser.getMetadata(GifImageParser.java:58)
> at
> org.apache.commons.imaging.ImageParser.getMetadata(ImageParser.java:832)
> at Test.main(Test.java:28)
> {code}
> To generate the large gif file I did the following:
> 1. Install ffmpeg and gifsicle
> 2. Use quicktime to create a screen recording
> 3. Generate a gif out of the screen recording
> {code:bash}
> ffmpeg -i ~/Desktop/Screen\ Recording\ 2023-06-29\ at\ 12.09.21\ PM.mov
> -pix_fmt rgb8 -r 10 commons-imaging-test.gif && gifsicle -O3
> commons-imaging-test.gif -o commons-imaging-test.gif
> {code}
> To run the test program:
> {code:bash}
> git clone [email protected]:andrewmkhoury/commons-imaging-gif-test.git
> cd commons-imaging-gif-test
> mvn assembly:assembly
> java -Xmx1g -jar target/IMAGING-test-0.0.1-SNAPSHOT-jar-with-dependencies.jar
> commons-imaging-test.gif{code}
> Heap analysis via Eclipse MAT shows that the ImageDescriptor.imageData
> storing the bytes of each frame is the cause of the problem:
> !image-2023-06-29-15-18-17-076.png|width=169,height=93!!screenshot-1.png|width=226,height=86!
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