[FFmpeg-trac] #9090(ffmpeg:reopened): In the process of screen recording, adjusting the volume will cause confusion of screen recording progress bar
FFmpeg
trac at avcodec.org
Wed Feb 3 04:12:54 EET 2021
#9090: In the process of screen recording, adjusting the volume will cause
confusion of screen recording progress bar
------------------------------------+------------------------------------
Reporter: HouLei | Owner:
Type: defect | Status: reopened
Priority: important | Component: ffmpeg
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
------------------------------------+------------------------------------
Changes (by HouLei):
* cc: houlei@… (added)
* priority: normal => important
* status: closed => reopened
* component: undetermined => ffmpeg
* resolution: needs_more_info =>
Comment:
houlei at houlei-PC:~/Desktop$ ffmpeg -f x11grab -framerate 25 -video_size
1920*1080 -i :0.0 out.mp4
ffmpeg version 4.1.6-1+dde Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 8 (Uos 8.3.0.3-3+rebuild)
configuration: --prefix=/usr --extra-version=1+dde --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu
--arch=amd64 --enable-gpl --disable-stripping --enable-avresample
--disable-filter=resample --enable-avisynth --enable-gnutls --enable-
ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite
--enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-
libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-
libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus
--enable-libpulse --enable-librsvg --enable-librubberband --enable-
libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-
libssh --enable-libtheora --enable-libtwolame --enable-libvidstab
--enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq
--enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl
--enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883
--enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[x11grab @ 0x55d65d3968c0] Stream #0: not enough frames to estimate rate;
consider increasing probesize
Input #0, x11grab, from ':0.0':
Duration: N/A, start: 1612317357.270483, bitrate: N/A
Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 25
fps, 1000k tbr, 1000k tbn, 1000k tbc
Cannot open libmwv206dec.so, libmwv206dec.so: cannot open shared object
file: No such file or directory
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x55d65d3a4580] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x55d65d3a4580] profile High 4:4:4 Predictive, level 4.0, 4:4:4
8-bit
[libx264 @ 0x55d65d3a4580] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0
cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=24
lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p,
1920x1080, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
encoder : Lavc58.35.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 938 fps= 25 q=-1.0 Lsize= 1658kB time=00:00:37.40 bitrate=
363.1kbits/s speed=0.991x
video:1646kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.714329%
[libx264 @ 0x55d65d3a4580] frame I:4 Avg QP: 9.87 size:248582
[libx264 @ 0x55d65d3a4580] frame P:246 Avg QP:19.03 size: 2033
[libx264 @ 0x55d65d3a4580] frame B:688 Avg QP:28.86 size: 277
[libx264 @ 0x55d65d3a4580] consecutive B-frames: 1.4% 1.5% 2.9% 94.2%
[libx264 @ 0x55d65d3a4580] mb I I16..4: 73.5% 0.0% 26.5%
[libx264 @ 0x55d65d3a4580] mb P I16..4: 0.5% 0.0% 0.2% P16..4: 0.6%
0.1% 0.0% 0.0% 0.0% skip:98.6%
[libx264 @ 0x55d65d3a4580] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 1.2%
0.0% 0.0% direct: 0.0% skip:98.7% L0:56.9% L1:42.9% BI: 0.2%
[libx264 @ 0x55d65d3a4580] coded y,u,v intra: 21.4% 16.0% 16.8% inter:
0.0% 0.0% 0.0%
[libx264 @ 0x55d65d3a4580] i16 v,h,dc,p: 75% 23% 2% 0%
[libx264 @ 0x55d65d3a4580] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 27% 19% 2%
4% 3% 4% 2% 4%
[libx264 @ 0x55d65d3a4580] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x55d65d3a4580] ref P L0: 30.9% 3.2% 40.4% 25.5%
[libx264 @ 0x55d65d3a4580] ref B L0: 56.0% 37.6% 6.4%
[libx264 @ 0x55d65d3a4580] ref B L1: 95.0% 5.0%
[libx264 @ 0x55d65d3a4580] kb/s:359.23
Exiting normally, received signal 2.
houlei at houlei-PC:~/Desktop$
-----------------------------------------------------------------------
Hello, you can download the attached file: out.mp4 , open it with the
player, and then observe the progress bar when playing. You will find that
the progress bar is stuck, but the picture is still playing.
Repeat steps:
1.Play music in Linux system.
2.On Linux platform, execute: ffmpeg -f x11grab -framerate 25 -video_size
1920*1080 -i :0.0 out.mp4
3.Adjust the volume of Linux system repeatedly
4.Save the screen video
5.Play the video and observe the progress bar.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9090#comment:2>
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