huge memory usage when appending certain MP4s #6149
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type:bug
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Reference
mbunkus/mkvtoolnix#6149
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Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
A user reported on IRC that they're seeing huge memory usage by
mkvmergewhen appending may (up to around 20) MP4 files that, while big themselves, don't contain that many frames. They reported having to add 128 GB of swap space just to get it working.They can reproduce it with only two files and shared the attached
heaptrackreport.Sample files have been provided.