[FFmpeg-trac] #6975(ffplay:closed): Recent change to sync video output to screen refresh conflicts with -noframedrop
FFmpeg
trac at avcodec.org
Mon Jan 22 13:33:12 EET 2018
#6975: Recent change to sync video output to screen refresh conflicts with
-noframedrop
------------------------------------+-----------------------------------
Reporter: Misaki | Owner:
Type: defect | Status: closed
Priority: normal | Component: ffplay
Version: git-master | Resolution: invalid
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Changes (by cehoyos):
* status: new => closed
* resolution: => invalid
* component: undetermined => ffplay
Comment:
Replying to [ticket:6975 Misaki]:
> {{{
> $ ffmpeg -filter_complex color=black:r=120 -t 10 black.mp4
> $ ffplay -noframedrop black.mp4
> }}}
>
> This will show video falling behind as shown with M-V, if your refresh
rate is less than 120.
This is the expected behaviour afaict (what else would `noframedrop`
mean?) that is also reproducible with old versions of FFplay, why do you
believe there is a bug?
{{{
$ time ffplay -noframedrop black.mp4 -autoexit
ffplay version 0.9, Copyright (c) 2003-2011 the FFmpeg developers
built on Nov 22 2012 09:29:11 with gcc 4.7.1 20120723 [gcc-4_7-branch
revision 189773]
configuration: --enable-gpl
libavutil 51. 32. 0 / 51. 32. 0
libavcodec 53. 42. 0 / 53. 42. 0
libavformat 53. 24. 0 / 53. 24. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 53. 0 / 2. 53. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'black.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.48.100
Duration: 00:00:10.00, start: 0.000000, bitrate: 27 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
320x240 [SAR 1:1 DAR 4:3], 15 kb/s, 120 fps, 120 tbr, 15360 tbn, 240 tbc
Metadata:
handler_name :
9.97 A-V: 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0 0/0
real 0m20.704s
user 0m0.549s
sys 0m0.126s
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6975#comment:2>
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