Sincerely,
L. Lee
ffmpeg -i ~/Downloads/sgd.ts -map 0:0 -c:v:0 libx264 -b:v 2500k -pass 1 -vf
fieldmatch=order=tff:combmatch=none,decimate,crop=1920:1072:0:4 -map 0:1 -an -f null
/dev/null && ffmpeg -i ~/Downloads/sgd.ts -map 0:0 -c:v:0 libx264 -b:v 2500k
-pass 2 -vf fieldmatch=order=tff:combmatch=none,decimate,crop=1920:1072:0:4 -map 0:1
-c:a ac3 -b:a 384k -movflags +faststart ~/Downloads/sgd.mp4
ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/6.1.1_3 --enable-shared
--enable-pthreads --enable-version3 --cc=clang --host-cflags=
--host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl
--enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d
--enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus
--enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy
--enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract
--enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis
--enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig
--enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino
--enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg
--disable-libjack --disable-indev=jack --enable-videotoolbox
--enable-audiotoolbox --enable-neon
libavutil 58. 29.100 / 58. 29.100
libavcodec 60. 31.102 / 60. 31.102
libavformat 60. 16.100 / 60. 16.100
libavdevice 60. 3.100 / 60. 3.100
libavfilter 9. 12.100 / 9. 12.100
libswscale 7. 5.100 / 7. 5.100
libswresample 4. 12.100 / 4. 12.100
libpostproc 57. 3.100 / 57. 3.100
Input #0, mpegts, from '/Users/llee/Downloads/sgd.ts':
Duration: 00:01:02.11, start: 1.400000, bitrate: 14865 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv,
bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn
Stream #0:1[0x101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side),
fltp, 640 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x13c605d00] using SAR=1/1
[libx264 @ 0x13c605d00] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x13c605d00] profile Main, level 4.0, 4:2:0, 8-bit
Output #0, null, to '/dev/null':
Metadata:
encoder : Lavf60.16.100
Stream #0:0: Video: h264, yuv420p(tv, bt709, progressive), 1920x1072 [SAR
1:1 DAR 120:67], q=2-31, 2500 kb/s, 24 fps, 24 tbn
Metadata:
encoder : Lavc60.31.102 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/2500000 buffer size: 0 vbv_delay: N/A
[out#0/null @ 0x6000004ac180] video:20127kB audio:0kB subtitle:0kB other
streams:0kB global headers:0kB muxing overhead: unknown
frame= 1475 fps= 93 q=-1.0 Lsize=N/A time=00:01:01.37 bitrate=N/A speed=3.87x
[libx264 @ 0x13c605d00] frame I:26 Avg QP:20.39 size: 77028
[libx264 @ 0x13c605d00] frame P:450 Avg QP:23.72 size: 23644
[libx264 @ 0x13c605d00] frame B:999 Avg QP:25.04 size: 7975
[libx264 @ 0x13c605d00] consecutive B-frames: 9.0% 1.4% 2.0% 87.6%
[libx264 @ 0x13c605d00] mb I I16..4: 64.1% 0.0% 35.9%
[libx264 @ 0x13c605d00] mb P I16..4: 33.0% 0.0% 0.0% P16..4: 34.8% 0.0%
0.0% 0.0% 0.0% skip:32.2%
[libx264 @ 0x13c605d00] mb B I16..4: 5.5% 0.0% 0.0% B16..8: 19.6% 0.0%
0.0% direct: 9.1% skip:65.8% L0:39.4% L1:54.2% BI: 6.4%
[libx264 @ 0x13c605d00] final ratefactor: 24.22
[libx264 @ 0x13c605d00] coded y,uvDC,uvAC intra: 29.9% 40.3% 6.3% inter: 6.1%
10.3% 0.0%
[libx264 @ 0x13c605d00] i16 v,h,dc,p: 35% 23% 26% 17%
[libx264 @ 0x13c605d00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 20% 22% 3% 9% 6%
6% 5% 5%
[libx264 @ 0x13c605d00] i8c dc,h,v,p: 56% 20% 21% 3%
[libx264 @ 0x13c605d00] Weighted P-Frames: Y:2.0% UV:0.9%
[libx264 @ 0x13c605d00] kb/s:2682.78
ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers
built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/6.1.1_3 --enable-shared
--enable-pthreads --enable-version3 --cc=clang --host-cflags=
--host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl
--enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d
--enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus
--enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy
--enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract
--enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis
--enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig
--enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino
--enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg
--disable-libjack --disable-indev=jack --enable-videotoolbox
--enable-audiotoolbox --enable-neon
libavutil 58. 29.100 / 58. 29.100
libavcodec 60. 31.102 / 60. 31.102
libavformat 60. 16.100 / 60. 16.100
libavdevice 60. 3.100 / 60. 3.100
libavfilter 9. 12.100 / 9. 12.100
libswscale 7. 5.100 / 7. 5.100
libswresample 4. 12.100 / 4. 12.100
libpostproc 57. 3.100 / 57. 3.100
Input #0, mpegts, from '/Users/llee/Downloads/sgd.ts':
Duration: 00:01:02.11, start: 1.400000, bitrate: 14865 kb/s
Program 1
Metadata:
service_name : Service01
service_provider: FFmpeg
Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv,
bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 30 fps, 30 tbr, 90k tbn
Stream #0:1[0x101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side),
fltp, 640 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
[libx264 @ 0x159f07480] using SAR=1/1
[libx264 @ 0x159f07480] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x159f07480] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0x159f07480] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2023 -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=15 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=2pass mbtree=1 bitrate=2500 ratetol=1.0 qcomp=0.60 qpmin=0
qpmax=69 qpstep=4 cplxblur=20.0 qblur=0.5 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/Users/llee/Downloads/sgd.mp4':
Metadata:
encoder : Lavf60.16.100
Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709,
progressive), 1920x1072 [SAR 1:1 DAR 120:67], q=2-31, 2500 kb/s, 24 fps, 12288
tbn
Metadata:
encoder : Lavc60.31.102 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/2500000 buffer size: 0 vbv_delay: N/A
Stream #0:1: Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 384
kb/s
Metadata:
encoder : Lavc60.31.102 ac3
[libx264 @ 0x159f07480] 2nd pass has more frames than 1st pass
(1475)720.9kbits/s dup=15 drop=0 speed=3.88x
[libx264 @ 0x159f07480] continuing anyway, at constant QP=26
[libx264 @ 0x159f07480] disabling adaptive B-frames
[1] 63630 segmentation fault ffmpeg -i ~/Downloads/sgd.ts -map 0:0 -c:v:0
libx264 -b:v 2500k -pass 2 -vf
Looks a bit like this trac ticket I made:https://trac.ffmpeg.org/ticket/10164
which is stiil open after 13 months. The difference in this ticket is that it
happens when doing dual pass av1 transcode with libaom. Not always with every
file, but very reliably with certain files that always deliver the segfault. I
can supply these files, but since the ticket does not get any attention I have
not done this yet.
