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radek-k / FFMediaToolkit

FFMediaToolkit is a cross-platform video decoder/encoder library for .NET that uses FFmpeg native libraries. It supports video frames extraction, reading stream metadata and creating videos from bitmaps in any format supported by FFmpeg.
MIT License
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Issue when iterating over all frames #63

Closed hey-red closed 3 years ago

hey-red commented 3 years ago

I noticed that iterating over some files doesn't work. Maybe it's problem with current frame reader implementation, that's not work for some files?

First video successfully extract first 8 frames and throw unknown exception(System.ExecutionEngineException).

https://user-images.githubusercontent.com/1738743/104822578-9aa60200-5854-11eb-9617-9e8c12e97a6c.mp4

Second video is works fine.

https://user-images.githubusercontent.com/1738743/104822571-79451600-5854-11eb-88cf-777575ef23ce.mp4

All files have same container and contains same video codec. We can take first code sample for testing.

UPD: A System.ExecutionEngineException randomly throws here

error

radek-k commented 3 years ago

Probably fixed it in the latest release v4.0.1 release. If the crash still occurs, you can try using the GetFrame method overload to write the bitmap directly to a Span<byte>.