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Bug#913345: Video seek causes video track to lag when the "Hurry up" setting is not enabled in VLC 3.X



Hi Bakhelit

On 2018-11-09 18:07:49, bakhelit@gmail.com wrote:
> Package: vlc
> Version: 3.0.3-1
> 
> Since Debian stable switched to VLC 3.X I started to notice the problem with
> video seek. I was able to reproduce the problem consistently with VLC 3.0.3
> from Debian stable repository and with VLC 3.0.4 from Debian unstable
> repository.
> 
> Video seek causes video track to lag (as if it is slightly paused and
> resumed extremely frequently). After disabling and then enabling the video
> track again it plays normally until one performs a seek again.
> 
> This seems to be caused by the "avcodec-hurry-up=0" setting in the
> "~/.config/vlc/vlcrc" file. When this is switched to the default value
> ("avcodec-hurry-up=1") video seek works normally. However I would prefer
> using "avcodec-hurry-up=0" to be sure that VLC does not skip frames as my
> CPU is fast enough and previous VLC versions worked great with
> "avcodec-hurry-up=0".
> 
> Mostly noticed with various MP4/MKV files with H264 MPEG-4 AVC codec (all
> files which I tested up to now, so sample should be easy to obtain).

Please contact VLC upstream about both issues, as they require better
understanding VLC internals than I have. In any case, please always provide
verbose debug logs (vlc -vvv), otherwise it's really hard to debug those issues.

Cheers
-- 
Sebastian Ramacher

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