Built from the latest git source seems not help.
following command runs about 15+ seconds. nothing was captured. If I add
-loglevel debug, this log keep being printed:
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[rawvideo @ 0x3234840] PACKET SIZE: 4196352, STRIDE: 5464
Here is the whole command line and output:
➜ ffmpeg git:(master) ✗ ./ffmpeg -s 1366x768 -f x11grab -i :0.0 -c libx264
-crf 28 -preset ultrafast /tmp/output.mp4
ffmpeg version N-82294-g6f0a171 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --disable-yasm --enable-x11grab --enable-gpl --enable-libx264
libavutil 55. 35.100 / 55. 35.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
[x11grab @ 0x363f4e0] Stream #0: not enough frames to estimate rate; consider
increasing probesize
Input #0, x11grab, from ':0.0':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1366x768, 29.97
fps, 1000k tbr, 1000k tbn, 1000k tbc
File '/tmp/output.mp4' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv444p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x3649060] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x3649060] profile High 4:4:4 Predictive, level 3.2, 4:4:4 8-bit
[libx264 @ 0x3649060] 264 - core 142 r2431 a5831aa - H.264/MPEG-4 AVC codec -
Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=0 ref=1
deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0
me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1
chroma_qp_offset=6 threads=6 lookahead_threads=1 sliced_threads=0 nr=0
decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0
keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=28.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to '/tmp/output.mp4':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p,
1366x768, q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
Metadata:
encoder : Lavc57.66.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[swscaler @ 0x3655080] Warning: data is not aligned! This can lead to a
speedloss
frame= 3 fps=0.1 q=-1.0 Lsize= 335kB time=00:00:00.06
bitrate=41099.8kbits/s dup=0 drop=464 speed=0.0024x
video:334kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 0.242560%
[libx264 @ 0x3649060] frame I:1 Avg QP:25.00 size:229658
[libx264 @ 0x3649060] frame P:2 Avg QP:32.00 size: 55964
[libx264 @ 0x3649060] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x3649060] mb P I16..4: 29.6% 0.0% 0.0% P16..4: 7.8% 0.0%
0.0% 0.0% 0.0% skip:62.6%
[libx264 @ 0x3649060] coded y,u,v intra: 32.5% 28.9% 27.7% inter: 7.3% 4.6% 4.0%
[libx264 @ 0x3649060] i16 v,h,dc,p: 55% 40% 3% 2%
[libx264 @ 0x3649060] kb/s:27299.50
On Tue, 2016-11-08 at 12:31 +0100, Carl Eugen Hoyos wrote:
2016-11-08 6:51 GMT+01:00 肖文良
<xiaowenli...@youku.com<mailto:xiaowenli...@youku.com>>:
> I'am trying to capture my X11 desktop sessoin using ffmpeg, but the same
> command capture nothing on my new Lenovo T450 laptop running Debian
> Jessie.
While Debian is now very up-to-date, please understand that we can only
support current FFmpeg, there are (several iiuc) Debian support resources.
> The command I used was: ffmpeg -loglevel debug -s 1366x768 -f x11grab
> -i :0.0 -c libx264 -crf 28 -preset ultrafast /tmp/output.mp4
>
> And the detailed output of ffmepg at: http://pastebin.com/rM8QvkQm
For future questions: Please remember not to use external resources
for the console output, paste it in your email.
Please test current FFmpeg git head, an improvement was committed
recently.
Carl Eugen
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Thanks,
肖文良
Programmer@youku&tudou
Mob: 18610724876
Addr: 北京市海淀区中关村海淀大街8号中钢国际广场5层
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