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Merge branch 'qtfaststart-fix' into 'develop'

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Fix MediaProxy crashing on some videos

See merge request pleroma/pleroma!4024
This commit is contained in:
feld 2024-01-13 04:35:32 +00:00
commit 9cc46c5538
2 changed files with 14 additions and 8 deletions
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1
changelog.d/qtfaststart.fix Normal file
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@ -0,0 +1 @@
MediaProxy Preview failures prevented when encountering certain video files

21
lib/pleroma/helpers/qt_fast_start.ex
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@ -40,16 +40,21 @@ defmodule Pleroma.Helpers.QtFastStart do
got_mdat,
acc
) do
full_size = (size - 8) * 8
<<data::bits-size(full_size), rest::bits>> = rest
try do
full_size = (size - 8) * 8
<<data::bits-size(full_size), rest::bits>> = rest
acc = [
{fourcc, pos, pos + size, size,
<<size::integer-big-size(32), fourcc::bits-size(32), data::bits>>}
| acc
]
acc = [
{fourcc, pos, pos + size, size,
<<size::integer-big-size(32), fourcc::bits-size(32), data::bits>>}
| acc
]
fix(rest, pos + size, got_moov || fourcc == "moov", got_mdat || fourcc == "mdat", acc)
fix(rest, pos + size, got_moov || fourcc == "moov", got_mdat || fourcc == "mdat", acc)
rescue
_ ->
:abort
end
end
defp fix(<<>>, _pos, _, _, acc) do