[FFmpeg-trac] #5221(ffmpeg:new): libx264 drops 2 starting frames
FFmpeg
trac at avcodec.org
Sat Feb 6 22:08:08 CET 2016
#5221: libx264 drops 2 starting frames
-----------------------------------+---------------------------------------
Reporter: renderTom | Type: defect
Status: new | Priority: critical
Component: ffmpeg | Version: unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+---------------------------------------
Transcoding from mp4 (and proRes) 24fps file to h264 mov file.
Resulting video drops 2 starting frames, as if original video started from
frame 2.
Summary of the bug:
How to reproduce:
{{{
% ffmpeg -i INPUT -an -sn -vcodec libx264 -crf 18 -pix_fmt yuv420p
OUTPUT.MOV
ffmpeg version N-78512-g4c573f8-tessus
tested on MacOSX 10.10.5
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
Here's a log
{{{
Tomass-iMac:~ renderTom$ /ffmpeg -i /Volumes/renderTom\
HD/\!_Projects/Other\ projects/\!_Prior/17\ Misconduct/1\
Incoming/Video/Misconduct_trailer_23_976_HD_FilmBridge_ProRes.mov -an -sn
-vcodec libx264 -crf 18 -pix_fmt yuv420p /Volumes/renderTom\
HD/\!_Projects/Other\ projects/\!_Prior/17\ Misconduct/1\
Incoming/Video/Misconduct_trailer_23_976_HD_FilmBridge_ProRes__5h.mov
ffmpeg version N-78512-g4c573f8-tessus Copyright (c) 2000-2016 the FFmpeg
developers
built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM
3.5svn)
configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --as=yasm
--extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl
--enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm
--enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopus --enable-libschroedinger
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-
libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-
libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-
ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
libavutil 55. 17.100 / 55. 17.100
libavcodec 57. 24.101 / 57. 24.101
libavformat 57. 24.100 / 57. 24.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 28.100 / 6. 28.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fd9b9800000] ignoring 'frma' atom of 'in24',
stream format is 'in24'
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Volumes/renderTom
HD/!_Projects/Other projects/!_Prior/17 Misconduct/1
Incoming/Video/Misconduct_trailer_23_976_HD_FilmBridge_ProRes.mov':
Metadata:
creation_time : 2015-12-16 15:32:45
com.apple.finalcutstudio.media.uuid: 1F42CDAC-
EB42-4222-9CE5-576512959623
timecode : 01:00:00:00
Duration: 00:29:05.79, start: 0.000000, bitrate: 15430 kb/s
Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48048 Hz, 10
channels, s32 (24 bit), 11531 kb/s (default)
Metadata:
creation_time : 2015-12-16 15:32:45
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Video: prores (apch / 0x68637061),
yuv422p10le(bt709), 1920x1080, 157862 kb/s, SAR 1:1 DAR 16:9, 24 fps, 24
tbr, 2400 tbn, 2400 tbc (default)
Metadata:
creation_time : 2016-01-19 16:31:33
handler_name : Apple Alias Data Handler
encoder : Apple ProRes 422 (HQ)
Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
Metadata:
creation_time : 2016-01-19 16:31:33
handler_name : Apple Alias Data Handler
reel_name : Unnamed
timecode : 01:00:00:00
[libx264 @ 0x7fd9ba042600] using SAR=1/1
[libx264 @ 0x7fd9ba042600] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2
[libx264 @ 0x7fd9ba042600] profile High, level 4.0
[libx264 @ 0x7fd9ba042600] 264 - core 148 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1
ref=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_pskip=1 chroma_qp_offset=-2 threads=12
lookahead_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 keyint=250 keyint_min=24
scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=18.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mov, to '/Volumes/renderTom HD/!_Projects/Other
projects/!_Prior/17 Misconduct/1
Incoming/Video/Misconduct_trailer_23_976_HD_FilmBridge_ProRes__5h.mov':
Metadata:
timecode : 01:00:00:00
com.apple.finalcutstudio.media.uuid: 1F42CDAC-
EB42-4222-9CE5-576512959623
encoder : Lavf57.24.100
Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc (default)
Metadata:
creation_time : 2016-01-19 16:31:33
handler_name : Apple Alias Data Handler
encoder : Lavc57.24.101 libx264
Side data:
unknown side data type 10 (24 bytes)
Stream mapping:
Stream #0:1 -> #0:0 (prores (native) -> h264 (libx264))
Press [q] to stop, [?] for help
frame= 36 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A
speed=
---
frame= 3744 fps= 14 q=23.0 size= 160981kB time=00:02:33.58
bitrate=8586.6kbits/frame= 3761 fps= 14 q=23.0 size= 161027kB
time=00:02:34.29 bitrate=8549.6kbits/frame= 3781 fps= 14 q=23.0 size=
161107kB time=00:02:35.12 bitrate=8507.9kbits/frame= 3799 fps= 14 q=23.0
size= 161167kB time=00:02:35.87 bitrate=8470.1kbits/frame= 3809 fps= 14
q=-1.0 Lsize= 161245kB time=00:02:38.62 bitrate=8327.3kbits/s
speed=0.586x
video:161211kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.021007%
[libx264 @ 0x7fd9ba042600] frame I:85 Avg QP:13.31 size:172097
[libx264 @ 0x7fd9ba042600] frame P:2728 Avg QP:17.80 size: 47041
[libx264 @ 0x7fd9ba042600] frame B:996 Avg QP:18.71 size: 22214
[libx264 @ 0x7fd9ba042600] consecutive B-frames: 52.1% 38.1% 2.6% 7.1%
[libx264 @ 0x7fd9ba042600] mb I I16..4: 35.0% 51.7% 13.4%
[libx264 @ 0x7fd9ba042600] mb P I16..4: 2.3% 7.0% 0.6% P16..4: 32.3%
14.1% 9.3% 0.0% 0.0% skip:34.4%
[libx264 @ 0x7fd9ba042600] mb B I16..4: 0.4% 1.0% 0.0% B16..8: 32.4%
5.0% 1.2% direct: 3.5% skip:56.4% L0:46.7% L1:48.5% BI: 4.7%
[libx264 @ 0x7fd9ba042600] 8x8 transform intra:66.3% inter:67.7%
[libx264 @ 0x7fd9ba042600] coded y,uvDC,uvAC intra: 70.6% 69.6% 50.6%
inter: 24.5% 25.3% 2.1%
[libx264 @ 0x7fd9ba042600] i16 v,h,dc,p: 49% 13% 16% 23%
[libx264 @ 0x7fd9ba042600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 11% 43% 5%
6% 6% 6% 5% 6%
[libx264 @ 0x7fd9ba042600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 14% 27% 7%
8% 7% 7% 6% 5%
[libx264 @ 0x7fd9ba042600] i8c dc,h,v,p: 61% 17% 17% 5%
[libx264 @ 0x7fd9ba042600] Weighted P-Frames: Y:14.4% UV:13.1%
[libx264 @ 0x7fd9ba042600] ref P L0: 59.7% 8.8% 21.3% 9.9% 0.3%
[libx264 @ 0x7fd9ba042600] ref B L0: 74.5% 24.6% 0.9%
[libx264 @ 0x7fd9ba042600] ref B L1: 98.3% 1.7%
[libx264 @ 0x7fd9ba042600] kb/s:8321.16
Tomass-iMac:~ renderTom$
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5221>
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