Hi guys, Trying to do a simple transcode, but the output is missing 2 frames at the start. I can live with that, but the timecode is then off by 2 frames as well. How can I tell if the trimming will / will not occur so I can compensate the TC stamp? (Or even better, can I avoid the trimming?) thx,
Bouke
Boukes-portable:~ bouke$ /Users/bouke/Desktop/ffmpeg -i
/Users/bouke/Desktop/Judith/LV6A3186_0226D1A.mov
/Users/bouke/Desktop/Judith/test.mp4
ffmpeg version 3.3.1 Copyright (c) 2000-2017 the FFmpeg developers
built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads
--enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx
--enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264
--enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb
--enable-filters --enable-libgsm --enable-libvidstab --enable-libx265
--disable-doc --arch=x86_64 --enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/Users/bouke/Desktop/Judith/LV6A3186_0226D1A.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2017-09-22T13:07:25.000000Z
Duration: 00:00:06.17, start: 0.000000, bitrate: 14219 kb/s
Stream #0:0(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709,
progressive), 480x270, 12679 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 24k
tbn, 24k tbc (default)
Metadata:
creation_time : 2017-09-22T13:07:25.000000Z
handler_name : Core Media Data Handler
encoder : Apple ProRes 422
timecode : 08:38:58:09
Stream #0:1(und): Audio: pcm_s16le (lpcm / 0x6D63706C), 48000 Hz, stereo,
s16, 1536 kb/s (default)
Metadata:
creation_time : 2017-09-22T13:07:25.000000Z
handler_name : Core Media Data Handler
Stream #0:2(und): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
Metadata:
creation_time : 2017-09-22T13:07:25.000000Z
handler_name : Core Media Data Handler
timecode : 08:38:58:09
Stream mapping:
Stream #0:0 -> #0:0 (prores (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
No pixel format specified, yuv422p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x7fe83b026600] using SAR=1/1
[libx264 @ 0x7fe83b026600] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fe83b026600] profile High 4:2:2, level 2.1, 4:2:2 8-bit
[libx264 @ 0x7fe83b026600] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft
2003-2016 - 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=6 lookahead_threads=1 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=23 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
Output #0, mp4, to '/Users/bouke/Desktop/Judith/test.mp4':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv422p,
480x270 [SAR 1:1 DAR 16:9], q=-1--1, 23.98 fps, 24k tbn, 23.98 tbc (default)
Metadata:
creation_time : 2017-09-22T13:07:25.000000Z
handler_name : Core Media Data Handler
timecode : 08:38:58:09
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz,
stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2017-09-22T13:07:25.000000Z
handler_name : Core Media Data Handler
encoder : Lavc57.89.100 aac
frame= 86 fps=0.0 q=28.0 size= 46kB time=00:00:04.52 bitrate=
82.6kbits/frame= 148 fps=127 q=-1.0 Lsize= 220kB time=00:00:06.18 bitrate=
291.9kbits/s speed=5.32x
video:213kB audio:2kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 2.750126%
[libx264 @ 0x7fe83b026600] frame I:1 Avg QP:23.73 size: 2878
[libx264 @ 0x7fe83b026600] frame P:40 Avg QP:23.76 size: 3321
[libx264 @ 0x7fe83b026600] frame B:107 Avg QP:26.74 size: 762
[libx264 @ 0x7fe83b026600] consecutive B-frames: 1.4% 2.7% 12.2% 83.8%
[libx264 @ 0x7fe83b026600] mb I I16..4: 40.8% 55.3% 3.9%
[libx264 @ 0x7fe83b026600] mb P I16..4: 4.4% 11.6% 1.3% P16..4: 47.8% 19.1%
7.2% 0.0% 0.0% skip: 8.7%
[libx264 @ 0x7fe83b026600] mb B I16..4: 0.2% 0.7% 0.1% B16..8: 43.5% 4.2%
0.6% direct: 1.7% skip:49.1% L0:42.6% L1:51.8% BI: 5.6%
[libx264 @ 0x7fe83b026600] 8x8 transform intra:66.0% inter:83.1%
[libx264 @ 0x7fe83b026600] coded y,uvDC,uvAC intra: 47.9% 82.3% 14.6% inter:
12.2% 24.9% 0.9%
[libx264 @ 0x7fe83b026600] i16 v,h,dc,p: 17% 13% 3% 68%
[libx264 @ 0x7fe83b026600] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 16% 14% 5% 11%
11% 9% 7% 5%
[libx264 @ 0x7fe83b026600] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 13% 4% 11%
10% 7% 5% 3%
[libx264 @ 0x7fe83b026600] i8c dc,h,v,p: 46% 14% 27% 12%
[libx264 @ 0x7fe83b026600] Weighted P-Frames: Y:2.5% UV:0.0%
[libx264 @ 0x7fe83b026600] ref P L0: 66.5% 13.4% 14.4% 5.4% 0.3%
[libx264 @ 0x7fe83b026600] ref B L0: 94.4% 4.8% 0.8%
[libx264 @ 0x7fe83b026600] ref B L1: 96.8% 3.2%
[libx264 @ 0x7fe83b026600] kb/s:281.55
[aac @ 0x7fe83b027e00] Qavg: 65536.000
Boukes-portable:~ bouke$
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