#7563: hwaccel nvdec consumes much more VRAM when compared to hwaccel cuvid
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Reporter: malakudi | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Comment (by oromit):
nvdec keeps more of a buffer, because it hands through the directly mapped
frames from the driver. While cuvid makes a vram-internal copy, and thus
can work with a minimal buffer and potentially zero copies all the way
through nvenc.
There's not much that can be done about that difference, as the buffer is
needed for decoder and filter chain to not run out of frames in the
predicted worst case scenario.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7563#comment:1>
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