Opened 5 years ago

Closed 5 years ago

#6504 closed defect (invalid)

Decklink device handling broken after 2017-05-30?

Reported by: Florian Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: decklink
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:
I use FFmpeg to capture video and audio from a Decklink card.
I am building FFmpeg myself with the media-autobuild_suite (
I keep old versions for myself for backup purposes. So long I did not have any issues using those builds for capturing from a Decklink card.
But since recently I saw that the handling of the Decklink card seems to be broken. I could narrow it down (from my backups) to a timespan between 2017-05-30 and 2017-06-16 where something changed that broke it. The old version (2017-05-30) does work, the newer ones, including the latest, do not work.
I have attached the log files for the builds I had at hand to test.

How to reproduce:

% ffmpeg -v 9 -loglevel 99 -f decklink -list_devices 1 -i dummy -report
ffmpeg version N-86494-g18f09524f7 (and newer)
built on 2017-06-16

Attachments (1) (4.4 KB ) - added by Florian 5 years ago.
all logs to document the issue

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Change History (3)

by Florian, 5 years ago

Attachment: added

all logs to document the issue

comment:1 by Marton Balint, 5 years ago

Most probably the build suite is using newer dirvers than what you have on your system.

Do you have 10.9.3 or newer?

Please resolve this as invalid if that is indeed the problem.

comment:2 by Florian, 5 years ago

Resolution: invalid
Status: newclosed

You are right. That did the trick. Weird that all updates since then did work, but the newer commit broke it. I had 10.6.4 installed.
Thanks for your help!

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