[FFmpeg-trac] #4076(undetermined:new): Poor performance when using unsharp filter on multiple outputs
FFmpeg
trac at avcodec.org
Tue Nov 4 00:00:36 CET 2014
#4076: Poor performance when using unsharp filter on multiple outputs
-------------------------------------+-------------------------------------
Reporter: speaker219 | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug: When using FFmpeg to encode two seperate video outputs
from a single video source, performance drops significantly when using the
"unsharp" video filter on BOTH outputs. If only used on one of the two
outputs, performance appears normal.
This is a problem particularly when using a DirectShow source, since the
real-time buffer will almost immediately fill and cause dropped frames/out
of sync audio making it impossible to stream from a live video source.
First sample, showing the issue, notice the poor fps (input framerate is
59.94 fps) and real-time buffer errors causing frame drops, CPU usage is
40% or lower.
{{{
cmd> ffmpeg -rtbufsize 902000k -f dshow -r 60000/1001 -video_size 1280x720
-pixel_format uyvy422 -i video="Decklink Video Capture":audio="Decklink
Audio Capture" -vcodec libx264 -vf "unsharp=5:5:0.2:5:5:0.0" -preset
medium -profile main -maxrate 1600k -bufsize 2000k -s 960x540 -pix_fmt
yuv420p -acodec aac -strict -2 -ab 96k -ar 44100 -af "volume=3" -f flv -y
"hd.flv" -vcodec libx264 -vf "unsharp=5:5:0.2:5:5:0.0,fps=fps=30" -preset
medium -profile main -maxrate 900k -bufsize 2000k -s 854x480 -pix_fmt
yuv420p -acodec aac -strict -2 -ab 96k -ar 44100 -af "volume=3" -f flv -y
"sd.flv"
ffmpeg version N-66809-g20df026 Copyright (c) 2000-2014 the FFmpeg
developers
built on Oct 11 2014 23:42:02 with gcc 4.9.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-li
bass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-
libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-
libmodplug --enable-libmp3lame --enable-lib
opencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-
libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --en
able-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-
libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 54. 10.100 / 54. 10.100
libavcodec 56. 4.101 / 56. 4.101
libavformat 56. 9.100 / 56. 9.100
libavdevice 56. 1.100 / 56. 1.100
libavfilter 5. 1.103 / 5. 1.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 1.100 / 53. 1.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=Decklink Video Capture:audio=Decklink Audio
Capture':
Duration: N/A, start: 1799667.924000, bitrate: 1536 kb/s
Stream #0:0: Video: rawvideo (HDYC / 0x43594448), uyvy422(tv),
1280x720, 59.94 tbr, 10000k tbn, 59.94 tbc
Stream #0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Please use -profile:a or -profile:v, -profile is ambiguous
Last message repeated 1 times
[libx264 @ 0000000002b451c0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX
[libx264 @ 0000000002b451c0] profile Main, level 3.2
[libx264 @ 0000000002b451c0] 264 - core 142 r2479 dd79a61 - H.264/MPEG-4
AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 a
nalyse=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=-2 threads=12 looka
head_threads=2 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 ke
yint=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 vbv_maxrate=1600
vbv_bufsize=2000 crf_max=0.0 nal_h
rd=none filler=0 ip_ratio=1.40 aq=1:1.00
[libx264 @ 0000000002b510c0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX
[libx264 @ 0000000002b510c0] profile Main, level 3.1
[libx264 @ 0000000002b510c0] 264 - core 142 r2479 dd79a61 - H.264/MPEG-4
AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 a
nalyse=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=-2 threads=12 looka
head_threads=2 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 ke
yint=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 vbv_maxrate=900
vbv_bufsize=2000 crf_max=0.0 nal_hr
d=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'hd.flv':
Metadata:
encoder : Lavf56.9.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p,
960x540, q=-1--1, max. 1600 kb/s, 59.94 fps, 1k tbn, 59.94 tbc
Metadata:
encoder : Lavc56.4.101 libx264
Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, stereo,
fltp, 96 kb/s
Metadata:
encoder : Lavc56.4.101 aac
Output #1, flv, to 'sd.flv':
Metadata:
encoder : Lavf56.9.100
Stream #1:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p,
854x480, q=-1--1, max. 900 kb/s, 30 fps, 1k tbn, 30 tbc
Metadata:
encoder : Lavc56.4.101 libx264
Stream #1:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, stereo,
fltp, 96 kb/s
Metadata:
encoder : Lavc56.4.101 aac
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Stream #0:0 -> #1:0 (rawvideo (native) -> h264 (libx264))
Stream #0:1 -> #1:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 1 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 1 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 1 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 5 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (63% of size: 902000000)! frame dropped!
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 1 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 4 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (63% of size: 902000000)! frame dropped!
Last message repeated 3 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (63% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
Last message repeated 2 times
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (62% of size: 902000000)! frame dropped!
frame= 3421 fps= 54 q=-1.0 Lq=-1.0 size= 4735kB time=00:00:57.84
bitrate= 670.6kbits/s
video:6905kB audio:1361kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[libx264 @ 0000000002b451c0] frame I:14 Avg QP:23.09 size: 64400
[libx264 @ 0000000002b451c0] frame P:867 Avg QP:25.62 size: 2697
[libx264 @ 0000000002b451c0] frame B:2540 Avg QP:33.32 size: 315
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (66% of size: 902000000)! frame dropped!
[libx264 @ 0000000002b451c0] consecutive B-frames: 0.8% 0.2% 1.1% 97.9%
[libx264 @ 0000000002b451c0] mb I I16..4: 17.0% 0.0% 83.0%
[libx264 @ 0000000002b451c0] mb P I16..4: 0.3% 0.0% 0.3% P16..4:
17.2% 5.8% 4.0% 0.0% 0.0% skip:72.4%
[libx264 @ 0000000002b451c0] mb B I16..4: 0.0% 0.0% 0.0% B16..8:
12.1% 0.3% 0.1% direct: 0.1% skip:87.4% L0:28.8% L1:69.4% BI: 1.8%
[libx264 @ 0000000002b451c0] coded y,uvDC,uvAC intra: 68.4% 68.0% 47.3%
inter: 1.6% 2.3% 0.1%
[libx264 @ 0000000002b451c0] i16 v,h,dc,p: 12% 75% 2% 11%
[libx264 @ 0000000002b451c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 31% 9%
5% 6% 7% 7% 6% 6%
[libx264 @ 0000000002b451c0] i8c dc,h,v,p: 39% 36% 19% 6%
[libx264 @ 0000000002b451c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000002b451c0] ref P L0: 71.7% 14.5% 11.0% 2.8%
[libx264 @ 0000000002b451c0] ref B L0: 91.3% 7.9% 0.8%
[libx264 @ 0000000002b451c0] ref B L1: 94.5% 5.5%
[libx264 @ 0000000002b451c0] kb/s:566.24
[libx264 @ 0000000002b510c0] frame I:7 Avg QP:21.65 size: 62974
[libx264 @ 0000000002b510c0] frame P:527 Avg QP:23.57 size: 3940
[libx264 @ 0000000002b510c0] frame B:1178 Avg QP:30.14 size: 435
[libx264 @ 0000000002b510c0] consecutive B-frames: 6.9% 1.3% 8.4% 83.4%
[libx264 @ 0000000002b510c0] mb I I16..4: 12.8% 0.0% 87.2%
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (67% of size: 902000000)! frame dropped!
[libx264 @ 0000000002b510c0] mb P I16..4: 0.3% 0.0% 0.5% P16..4:
22.9% 9.1% 6.6% 0.0% 0.0% skip:60.6%
[libx264 @ 0000000002b510c0] mb B I16..4: 0.0% 0.0% 0.0% B16..8:
15.3% 1.1% 0.2% direct: 0.3% skip:83.1% L0:27.4% L1:68.4% BI: 4.2%
[libx264 @ 0000000002b510c0] coded y,uvDC,uvAC intra: 72.0% 71.9% 53.0%
inter: 3.6% 5.2% 0.4%
[libx264 @ 0000000002b510c0] i16 v,h,dc,p: 14% 73% 2% 11%
[libx264 @ 0000000002b510c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 33% 9%
5% 6% 7% 7% 6% 7%
[libx264 @ 0000000002b510c0] i8c dc,h,v,p: 36% 36% 20% 7%
[libx264 @ 0000000002b510c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000002b510c0] ref P L0: 72.2% 13.4% 11.1% 3.3%
[libx264 @ 0000000002b510c0] ref B L0: 92.7% 5.7% 1.5%
[libx264 @ 0000000002b510c0] ref B L1: 94.4% 5.6%
[libx264 @ 0000000002b510c0] kb/s:424.71
[dshow @ 0000000002b42600] real-time buffer[Decklink Video Capture] too
full (68% of size: 902000000)! frame dropped!
Received signal 2: terminating.
}}}
When using the "unsharp" filter on only one of the single outputs,
performance is as expected, encoding in real-time at the input framerate
without any real-time buffer errors:
{{{
cmd>ffmpeg -rtbufsize 902000k -f dshow -r 60000/1001 -video_size 1280x720
-pixel_format uyvy422 -i video="Decklink Video Capture":audio="Decklink
Audio Capture" -vcodec libx264 -vf "unsharp=5:5:0.2:5:5:0.0" -preset
medium -profile main -maxrate 1600k -bufsize 2000k -s 960x540 -pix_fmt
yuv420p -acodec aac -strict -2 -ab 96k -ar 44100 -af "volume=3" -f flv -y
"hd.flv" -vcodec libx264 -vf "fps=fps=30" -preset medium -profile main
-maxrate 900k -bufsize 2000k -s 854x480 -pix_fmt yuv420p -acodec aac
-strict -2 -ab 96k -ar 44100 -af "volume=3" -f flv -y "sd.flv"
ffmpeg version N-66809-g20df026 Copyright (c) 2000-2014 the FFmpeg
developers
built on Oct 11 2014 23:42:02 with gcc 4.9.1 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-iconv --enable-li
bass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-
libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-
libmodplug --enable-libmp3lame --enable-lib
opencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-
libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --en
able-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-
libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 54. 10.100 / 54. 10.100
libavcodec 56. 4.101 / 56. 4.101
libavformat 56. 9.100 / 56. 9.100
libavdevice 56. 1.100 / 56. 1.100
libavfilter 5. 1.103 / 5. 1.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 1.100 / 53. 1.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, dshow, from 'video=Decklink Video Capture:audio=Decklink Audio
Capture':
Duration: N/A, start: 1799894.202000, bitrate: 1536 kb/s
Stream #0:0: Video: rawvideo (HDYC / 0x43594448), uyvy422(tv),
1280x720, 59.94 tbr, 10000k tbn, 59.94 tbc
Stream #0:1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Please use -profile:a or -profile:v, -profile is ambiguous
Last message repeated 1 times
[libx264 @ 0000000002b441c0] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX
[libx264 @ 0000000002b441c0] profile Main, level 3.2
[libx264 @ 0000000002b441c0] 264 - core 142 r2479 dd79a61 - H.264/MPEG-4
AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 a
nalyse=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=-2 threads=12 looka
head_threads=2 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 ke
yint=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 vbv_maxrate=1600
vbv_bufsize=2000 crf_max=0.0 nal_h
rd=none filler=0 ip_ratio=1.40 aq=1:1.00
[libx264 @ 0000000002b4ff00] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX
[libx264 @ 0000000002b4ff00] profile Main, level 3.1
[libx264 @ 0000000002b4ff00] 264 - core 142 r2479 dd79a61 - H.264/MPEG-4
AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html -
options: cabac=1 ref=3 deblock=1:0:0 a
nalyse=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=-2 threads=12 looka
head_threads=2 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 ke
yint=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 vbv_maxrate=900
vbv_bufsize=2000 crf_max=0.0 nal_hr
d=none filler=0 ip_ratio=1.40 aq=1:1.00
Output #0, flv, to 'hd.flv':
Metadata:
encoder : Lavf56.9.100
Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p,
960x540, q=-1--1, max. 1600 kb/s, 59.94 fps, 1k tbn, 59.94 tbc
Metadata:
encoder : Lavc56.4.101 libx264
Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, stereo,
fltp, 96 kb/s
Metadata:
encoder : Lavc56.4.101 aac
Output #1, flv, to 'sd.flv':
Metadata:
encoder : Lavf56.9.100
Stream #1:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p,
854x480, q=-1--1, max. 900 kb/s, 30 fps, 1k tbn, 30 tbc
Metadata:
encoder : Lavc56.4.101 libx264
Stream #1:1: Audio: aac ([10][0][0][0] / 0x000A), 44100 Hz, stereo,
fltp, 96 kb/s
Metadata:
encoder : Lavc56.4.101 aac
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Stream #0:0 -> #1:0 (rawvideo (native) -> h264 (libx264))
Stream #0:1 -> #1:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
frame= 1036 fps= 60 q=-1.0 Lq=-1.0 size= 1582kB time=00:00:17.27
bitrate= 750.1kbits/s
video:2322kB audio:408kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
[libx264 @ 0000000002b441c0] frame I:5 Avg QP:24.63 size: 59927
[libx264 @ 0000000002b441c0] frame P:264 Avg QP:25.97 size: 3013
[libx264 @ 0000000002b441c0] frame B:767 Avg QP:33.48 size: 367
[libx264 @ 0000000002b441c0] consecutive B-frames: 1.1% 0.0% 2.0% 96.9%
[libx264 @ 0000000002b441c0] mb I I16..4: 18.8% 0.0% 81.2%
[libx264 @ 0000000002b441c0] mb P I16..4: 0.4% 0.0% 0.7% P16..4:
20.6% 6.3% 4.0% 0.0% 0.0% skip:68.0%
[libx264 @ 0000000002b441c0] mb B I16..4: 0.0% 0.0% 0.0% B16..8:
15.4% 0.4% 0.1% direct: 0.1% skip:84.1% L0:32.1% L1:66.6% BI: 1.3%
[libx264 @ 0000000002b441c0] coded y,uvDC,uvAC intra: 67.4% 66.8% 42.3%
inter: 1.9% 2.6% 0.1%
[libx264 @ 0000000002b441c0] i16 v,h,dc,p: 20% 63% 4% 12%
[libx264 @ 0000000002b441c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 30% 10%
5% 6% 7% 6% 5% 6%
[libx264 @ 0000000002b441c0] i8c dc,h,v,p: 42% 33% 20% 5%
[libx264 @ 0000000002b441c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000002b441c0] ref P L0: 69.8% 14.7% 12.7% 2.8%
[libx264 @ 0000000002b441c0] ref B L0: 92.8% 6.1% 1.0%
[libx264 @ 0000000002b441c0] ref B L1: 94.1% 5.9%
[libx264 @ 0000000002b441c0] kb/s:637.10
[libx264 @ 0000000002b4ff00] frame I:3 Avg QP:23.69 size: 55129
[libx264 @ 0000000002b4ff00] frame P:169 Avg QP:24.13 size: 3987
[libx264 @ 0000000002b4ff00] frame B:346 Avg QP:29.59 size: 465
[libx264 @ 0000000002b4ff00] consecutive B-frames: 10.2% 0.8% 4.1% 84.9%
[libx264 @ 0000000002b4ff00] mb I I16..4: 15.9% 0.0% 84.1%
[libx264 @ 0000000002b4ff00] mb P I16..4: 0.5% 0.0% 1.2% P16..4:
25.3% 9.0% 6.0% 0.0% 0.0% skip:58.0%
[libx264 @ 0000000002b4ff00] mb B I16..4: 0.0% 0.0% 0.0% B16..8:
18.4% 1.0% 0.2% direct: 0.2% skip:80.2% L0:28.6% L1:67.8% BI: 3.6%
[libx264 @ 0000000002b4ff00] coded y,uvDC,uvAC intra: 71.2% 71.6% 49.1%
inter: 3.9% 5.6% 0.4%
[libx264 @ 0000000002b4ff00] i16 v,h,dc,p: 21% 62% 4% 13%
[libx264 @ 0000000002b4ff00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 30% 10%
5% 6% 7% 6% 5% 6%
[libx264 @ 0000000002b4ff00] i8c dc,h,v,p: 38% 34% 21% 7%
[libx264 @ 0000000002b4ff00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000002b4ff00] ref P L0: 71.2% 13.8% 11.8% 3.2%
[libx264 @ 0000000002b4ff00] ref B L0: 91.3% 6.9% 1.9%
[libx264 @ 0000000002b4ff00] ref B L1: 93.9% 6.1%
[libx264 @ 0000000002b4ff00] kb/s:463.26
}}}
I tested the issue using file input (instead of a DirectShow source) and
the same issue seems to be present. As expected, there are no "real-time
buffer errors" - but performance is still drastically reduced.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4076>
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