Am 06.03.2019 um 17:12 schrieb Paul B Mahol:
On 3/6/19, Michael Koch <[email protected]> wrote:
I'd like to know which frames does the tmix filter use for averaging.
Let's assume tmix=frames=9.
To make the n_th frame of the output video, does it use input frames n-8
to n, or n-4 to n+4, or n to n+8?
How does the filter behave at the beginning and end of the video, where
not all required input frames exist?
Filter output first frame after frames=9 it got from input. At
encountering eof it simply ends.
I did make this test with a 5 seconds @25fps input video with
tmix=frames=50, so that the output should be 2 seconds shorter. But the
output video has the same length as the input.
F:\Meteore>c://ffmpeg/ffmpeg -i sternschnuppe167.mp4 -vf tmix=frames=50
-q:v 1 -
y test.mp4
ffmpeg version N-93219-gc679119a73 Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 8.2.1 (GCC) 20190212
configuration: --enable-gpl --enable-version3 --enable-sdl2
--enable-fontconfi
g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d
--enable-libb
luray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus
--enable-libshine --e
nable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame
--enable
-libvpx --enable-libwavpack --enable-libwebp --enable-libx264
--enable-libx265 -
-enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib
--enable-gmp --enab
le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc
--enable-libmysofa --en
able-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-amf --en
able-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc
--enable-nvdec --e
nable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 26.100 / 56. 26.100
libavcodec 58. 47.102 / 58. 47.102
libavformat 58. 26.101 / 58. 26.101
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 48.100 / 7. 48.100
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sternschnuppe167.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.26.101
Duration: 00:00:05.03, start: 0.000000, bitrate: 10351 kb/s
Stream #0:0(und): Video: h264 (High 4:2:2) (avc1 / 0x31637661),
yuv422p, 120
0x1200 [SAR 1:1 DAR 1:1], 10276 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
(default
)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, flt
p, 127 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 000000000304fa40] -qscale is ignored, -crf is recommended.
[libx264 @ 000000000304fa40] using SAR=1/1
[libx264 @ 000000000304fa40] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2
AVX FMA3 BMI2 AVX2
[libx264 @ 000000000304fa40] profile High 4:2:2, level 4.0, 4:2:2, 8-bit
[libx264 @ 000000000304fa40] 264 - core 157 r2935 545de2f - H.264/MPEG-4
AVC cod
ec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options:
cabac=1 r
ef=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed
_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11
fast_pski
p=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0
nr=0 deci
mate=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=2
5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
qcomp=0.6
0 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.26.101
Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661),
yuv422p, 1200x1
200 [SAR 1:1 DAR 1:1], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.47.102 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, flt
p, 128 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc58.47.102 aac
frame= 1 fps=0.0 q=0.0 size= 0kB time=00:00:02.11 bitrate=
0.2kbits/s
frame= 3 fps=2.2 q=0.0 size= 0kB time=00:00:02.19 bitrate=
0.2kbits/s
frame= 5 fps=2.5 q=0.0 size= 0kB time=00:00:02.26 bitrate=
0.2kbits/s
frame= 7 fps=2.6 q=0.0 size= 0kB time=00:00:02.34 bitrate=
0.2kbits/s
frame= 9 fps=2.8 q=0.0 size= 0kB time=00:00:02.43 bitrate=
0.2kbits/s
frame= 11 fps=2.8 q=0.0 size= 0kB time=00:00:02.51 bitrate=
0.2kbits/s
frame= 13 fps=2.9 q=0.0 size= 0kB time=00:00:02.58 bitrate=
0.1kbits/s
frame= 15 fps=2.9 q=0.0 size= 0kB time=00:00:02.66 bitrate=
0.1kbits/s
frame= 17 fps=2.9 q=0.0 size= 0kB time=00:00:02.75 bitrate=
0.1kbits/s
frame= 19 fps=3.0 q=0.0 size= 0kB time=00:00:02.83 bitrate=
0.1kbits/s
frame= 21 fps=3.0 q=0.0 size= 0kB time=00:00:02.90 bitrate=
0.1kbits/s
frame= 23 fps=3.0 q=0.0 size= 0kB time=00:00:02.98 bitrate=
0.1kbits/s
frame= 25 fps=3.0 q=0.0 size= 0kB time=00:00:03.07 bitrate=
0.1kbits/s
frame= 27 fps=3.0 q=0.0 size= 0kB time=00:00:03.15 bitrate=
0.1kbits/s
frame= 29 fps=3.0 q=0.0 size= 0kB time=00:00:03.22 bitrate=
0.1kbits/s
frame= 31 fps=3.0 q=0.0 size= 0kB time=00:00:03.30 bitrate=
0.1kbits/s
frame= 33 fps=3.1 q=0.0 size= 0kB time=00:00:03.39 bitrate=
0.1kbits/s
frame= 35 fps=3.1 q=0.0 size= 0kB time=00:00:03.47 bitrate=
0.1kbits/s
frame= 37 fps=3.1 q=0.0 size= 0kB time=00:00:03.54 bitrate=
0.1kbits/s
frame= 39 fps=3.1 q=0.0 size= 0kB time=00:00:03.62 bitrate=
0.1kbits/s
frame= 41 fps=3.1 q=0.0 size= 0kB time=00:00:03.71 bitrate=
0.1kbits/s
frame= 43 fps=3.1 q=0.0 size= 0kB time=00:00:03.79 bitrate=
0.1kbits/s
frame= 45 fps=3.1 q=0.0 size= 0kB time=00:00:03.86 bitrate=
0.1kbits/s
frame= 47 fps=3.1 q=0.0 size= 0kB time=00:00:03.94 bitrate=
0.1kbits/s
frame= 49 fps=3.1 q=0.0 size= 0kB time=00:00:04.03 bitrate=
0.1kbits/s
frame= 51 fps=3.1 q=28.0 size= 0kB time=00:00:04.11 bitrate=
0.1kbits/
frame= 53 fps=3.1 q=28.0 size= 0kB time=00:00:04.18 bitrate=
0.1kbits/
frame= 55 fps=3.1 q=28.0 size= 256kB time=00:00:04.26 bitrate=
491.6kbits/
frame= 57 fps=3.1 q=28.0 size= 256kB time=00:00:04.35 bitrate=
482.0kbits/
frame= 59 fps=3.1 q=28.0 size= 256kB time=00:00:04.43 bitrate=
472.7kbits/
frame= 61 fps=3.1 q=28.0 size= 256kB time=00:00:04.50 bitrate=
466.0kbits/
frame= 63 fps=3.1 q=28.0 size= 256kB time=00:00:04.58 bitrate=
457.3kbits/
frame= 65 fps=3.1 q=28.0 size= 256kB time=00:00:04.67 bitrate=
449.0kbits/
frame= 67 fps=3.1 q=28.0 size= 256kB time=00:00:04.75 bitrate=
440.9kbits/
frame= 69 fps=3.1 q=28.0 size= 256kB time=00:00:04.82 bitrate=
435.1kbits/
frame= 72 fps=3.1 q=28.0 size= 256kB time=00:00:04.97 bitrate=
422.0kbits/
frame= 74 fps=3.1 q=28.0 size= 256kB time=00:00:04.97 bitrate=
422.0kbits/
frame= 76 fps=3.1 q=28.0 size= 256kB time=00:00:04.97 bitrate=
422.0kbits/
frame= 76 fps=3.0 q=-1.0 Lsize= 872kB time=00:00:05.01
bitrate=1424.2kbits
/s speed=0.198x
video:790kB audio:78kB subtitle:0kB other streams:0kB global headers:0kB
muxing
overhead: 0.393023%
[libx264 @ 000000000304fa40] frame I:1 Avg QP:19.44 size:259014
[libx264 @ 000000000304fa40] frame P:75 Avg QP:19.56 size: 7319
[libx264 @ 000000000304fa40] mb I I16..4: 12.4% 69.2% 18.4%
[libx264 @ 000000000304fa40] mb P I16..4: 0.0% 0.0% 0.0% P16..4:
19.5% 0.3
% 1.6% 0.0% 0.0% skip:78.5%
[libx264 @ 000000000304fa40] 8x8 transform intra:69.2% inter:62.8%
[libx264 @ 000000000304fa40] coded y,uvDC,uvAC intra: 89.1% 0.0% 0.0%
inter: 9.9
% 0.0% 0.0%
[libx264 @ 000000000304fa40] i16 v,h,dc,p: 33% 4% 56% 7%
[libx264 @ 000000000304fa40] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 8% 12% 40%
6% 6%
6% 6% 7% 8%
[libx264 @ 000000000304fa40] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 10% 24%
11% 10%
9% 9% 9% 10%
[libx264 @ 000000000304fa40] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 000000000304fa40] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000000000304fa40] ref P L0: 97.8% 1.4% 0.8% 0.0%
[libx264 @ 000000000304fa40] kb/s:2126.23
[aac @ 0000000003282780] Qavg: 176.570
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