regression: sound sometimes missing on decklink mini monitor 4k

[afriza]

Hi,

I am facing sound sometimes missing on decklink device ("Written only 0 samples out of 1024") when compiling under Linux 18.04 with VLC 3.0.10 and VLC 3.0.11... The problem doesn't exist on VLC 3.0.8 though..

Looking at the repository https://git.videolan.org/git/vlc.git there is no tags for the 3.0.x releases? how do I bisect the repo?

[afriza]

I found vlc-3.0 repo on github and here is the result of my git-bisect: I don't have the knowledge on how to relate the commit with the problem though.. or maybe my bisecting technique was bad..

Code: Select all

$ git bisect bad 576b4da8d674d8a98dd493e9b343f1875efde047 is the first bad commit commit 576b4da8d674d8a98dd493e9b343f1875efde047 Author: Thomas Guillem <thomas@gllm.fr> Date: Tue Nov 26 11:31:45 2019 +0100 core: increase file-caching Same value than the network one. In order to fix low-fps video with high cpu count, as decided during the last technical meeting. cf. background here: https://mailman.videolan.org/pipermail/vlc-devel/2019-September/127432.html :040000 040000 729ca99287b919cffa3d9d07c7e85d75df40d11f 6fb2682555d8320a73c5e920fc93752c161337d5 M src

what I did was, for each of the bisect commit, I did:

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./bootstrap ./configure --with-decklink-sdk=$HOME/BMD_SDK/Linux ./compile -j4 sudo make install # perform testing sudo make uninstall git bisect bad|good

[afriza]

I have tested 3.0.11 tag without and with reverted 576b4da8d674d8a98dd493e9b343f1875efde047 ... reverting 576b4da8d674d8a98dd493e9b343f1875efde047 fixed the stuttering sound in decklink...

experts, please shed some light...