#3531: ffmpeg hangs converting a possibly broken avi file
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Reporter: hxuanyu | Owner:
Type: defect | Status: closed
Priority: important | Component:
Version: git-master | undetermined
Keywords: avi | Resolution: fixed
deadlock regression | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Comment (by DonMoir):
I changed read_braindead_odml_indx so it only adds an index entry if it's
a keyframe. You end up with only 2 index entries. This allowed to open in
about 1 to 3 seconds on my slower machine. Could not open on this machine
before without it dying due to overheating. When adding index entries in
read_braindead_odml_indx, it adds keyframe or non-keyframe entries and
it's the non-keyframe entries that are a problem since there are many
millions of them. Seems memory is thrashing to disk etc., as it attempts
to build the index since it becomes a large consumer of memory and CPU.
With the above change it worked normally but I don't know what other
ramifications it might have.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3531#comment:8>
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