[FFmpeg-trac] #5512(undetermined:new): Audio Out of Sync after transcode
FFmpeg
trac at avcodec.org
Thu May 5 13:05:15 CEST 2016
#5512: Audio Out of Sync after transcode
-------------------------------------+-------------------------------------
Reporter: ronag | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
After transcoding the audio is off by 2 frames.
How to reproduce:
{{{
ronagy$ ffmpeg -i original.mov -flags +ilme+ildct transcoded.mov
ffmpeg version git-2016-05-05-5b174dd Copyright (c) 2000-2016 the FFmpeg
developers
built with Apple LLVM version 7.3.0 (clang-703.0.29)
configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-
opencl --enable-libx264 --enable-libmp3lame --enable-libxvid --enable-
libfreetype --enable-libvorbis --enable-libvpx --enable-librtmp --enable-
libass --enable-ffplay --enable-libfdk-aac --enable-libopus --enable-
libx265 --enable-nonfree --enable-vda
libavutil 55. 23.100 / 55. 23.100
libavcodec 57. 38.100 / 57. 38.100
libavformat 57. 36.100 / 57. 36.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 44.100 / 6. 44.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'original.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf57.25.100
Duration: 00:00:21.28, start: 0.000000, bitrate: 130459 kb/s
Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p(tv,
bt709/unknown/unknown), 1920x1080, 121241 kb/s, 25 fps, 25 tbr, 12800 tbn
(default)
Metadata:
handler_name : DataHandler
timecode : 00:00:00:00
Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 7.1,
s32 (24 bit), 9216 kb/s (default)
Metadata:
handler_name : DataHandler
Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
Metadata:
handler_name : DataHandler
timecode : 00:00:00:00
No pixel format specified, yuv422p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7ff6b3811e00] interlace + weightp is not implemented
[libx264 @ 0x7ff6b3811e00] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7ff6b3811e00] profile High 4:2:2, level 4.0, 4:2:2 8-bit
[libx264 @ 0x7ff6b3811e00] 264 - core 148 r2601 a0cd7d3 - 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=tff
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=0 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
[mov @ 0x7ff6b3810c00] Using AVStream.codec to pass codec parameters to
muxers is deprecated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, mov, to 'transcoded.mov':
Metadata:
major_brand : qt
minor_version : 512
compatible_brands: qt
encoder : Lavf57.36.100
Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), yuv422p, 1920x1080,
q=2-31, 0.04 fps, 12800 tbn (default)
Metadata:
handler_name : DataHandler
timecode : 00:00:00:00
encoder : Lavc57.38.100 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, 7.1,
fltp (24 bit), 469 kb/s (default)
Metadata:
handler_name : DataHandler
encoder : Lavc57.38.100 aac
Stream mapping:
Stream #0:0 -> #0:0 (dnxhd (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (pcm_s24le (native) -> aac (native))
Press [q] to stop, [?] for help
frame= 532 fps=106 q=-1.0 Lsize= 1833kB time=00:00:21.29 bitrate=
705.2kbits/s speed=4.25x
video:602kB audio:1213kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 1.012604%
[libx264 @ 0x7ff6b3811e00] frame I:3 Avg QP:17.24 size: 57340
[libx264 @ 0x7ff6b3811e00] frame P:143 Avg QP:24.25 size: 2370
[libx264 @ 0x7ff6b3811e00] frame B:386 Avg QP:31.72 size: 271
[libx264 @ 0x7ff6b3811e00] consecutive B-frames: 2.6% 1.5% 1.1% 94.7%
[libx264 @ 0x7ff6b3811e00] mb I I16..4: 25.6% 66.1% 8.4%
[libx264 @ 0x7ff6b3811e00] mb P I16..4: 0.3% 0.3% 0.1% P16..4: 2.3%
0.3% 0.2% 0.0% 0.0% skip:96.5%
[libx264 @ 0x7ff6b3811e00] mb B I16..4: 0.0% 0.1% 0.0% B16..8: 0.9%
0.1% 0.0% direct: 0.0% skip:98.9% L0:28.6% L1:69.1% BI: 2.2%
[libx264 @ 0x7ff6b3811e00] field mbs: intra: 9.2% inter:6.5% skip:0.7%
[libx264 @ 0x7ff6b3811e00] 8x8 transform intra:63.2% inter:65.4%
[libx264 @ 0x7ff6b3811e00] coded y,uvDC,uvAC intra: 7.5% 12.5% 8.4% inter:
0.5% 0.1% 0.0%
[libx264 @ 0x7ff6b3811e00] i16 v,h,dc,p: 74% 24% 2% 0%
[libx264 @ 0x7ff6b3811e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 2% 56% 0%
0% 0% 0% 0% 0%
[libx264 @ 0x7ff6b3811e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 17% 25% 4%
4% 4% 4% 4% 3%
[libx264 @ 0x7ff6b3811e00] i8c dc,h,v,p: 68% 11% 20% 1%
[libx264 @ 0x7ff6b3811e00] ref P L0: 90.7% 4.1% 4.7% 0.0% 0.3% 0.1%
[libx264 @ 0x7ff6b3811e00] ref B L0: 66.9% 27.7% 5.1% 0.1% 0.2% 0.1%
[libx264 @ 0x7ff6b3811e00] ref B L1: 96.1% 3.6% 0.3% 0.0%
[libx264 @ 0x7ff6b3811e00] kb/s:231.39
[aac @ 0x7ff6b3813600] Qavg: 573.770
}}}
Files are available here:
https://www.dropbox.com/sh/9qi9813i3jm1mlz/AACkgGs5IP4AizOja0HfgtdUa?dl=0
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5512>
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