#11426: Memory leak in Intel QSV decoder
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Reporter: Aleksoid1978 | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: unspecified | Resolution:
Keywords: QSV | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Description changed by Aleksoid1978:
Old description:
> Summary of the bug:
> Memory leak on call **avcodec_flush_buffers()** when use **h264_qsv**
> decoder in **Windows 10/11**.
>
> For ease of reproduction, I simply took the official example
> https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/qsv_decode.c
> and added a call to **avcodec_flush_buffers(decoder_ctx)** in the
> read/decode loop for every 10th packet.
> For each call to avcodec_flush_buffers(), memory consumption increases.
>
> Windows 11 24H2.
> Intel UHD 730 with the latest drivers, no memory leak.
> Intel HD 530 with the latest drivers, memory leak.
>
> I agree that the Intel drivers are to blame here, but maybe something is
> missing in the code in ffmpeg?
New description:
Summary of the bug:
Memory leak on call **avcodec_flush_buffers()** when use **h264_qsv**
decoder in **Windows 10/11**.
For ease of reproduction, I simply took the official example
https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/qsv_decode.c and
added a call to **avcodec_flush_buffers(decoder_ctx)** in the read/decode
loop for every 10th packet.
For each call to **avcodec_flush_buffers()**, memory consumption
increases.
Windows 11 24H2.
Intel UHD 730 with the latest drivers, no memory leak.
Intel HD 530 with the latest drivers, memory leak.
I agree that the Intel drivers are to blame here, but maybe something is
missing in the code in ffmpeg?
--
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Ticket URL: <https://trac.ffmpeg.org/ticket/11426#comment:1>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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