On 9/27/18 5:11 PM, Carl Eugen Hoyos wrote:
2018-09-27 4:27 GMT+02:00, sean darcy <[email protected]>:
I'm transcoding mpeg2 -> x264.
Stream #0:0[0x64]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions,
29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
When I run ffmpeg:
ffmpeg -i in.mpg -map 0:0 -map 0:2 -c:v libx264 -tune film -preset slow
-crf 22 -c:a copy out.mp4
Please (test current FFmpeg git head and) provide the command line
you used together with the complete, uncut console output.
If your input is progressive and variable frame rate and you want
mp4 output, then the duplicated frames are unavoidable as FFmpeg
is unable to write valid variable frame rate mp4 files.
(vfr mkv is supported)
If your input is mixed telecined and progressive, there are command
lines that help iirc.
If your input is only telecined or soft telecined, the output frame-rate
should be 24000/1001 (this is also true for the case above).
The idet filter can help you detect what your input's properties are,
visual inspection is even better, an alternative is to provide a sample.
Carl Eugen
_______________________________________________
Thanks for the help.
ffmpeg -i in.mpg -frames:v 2000 -map 0:0 -map 0:2 -c:v libx264 -tune
film -preset slow -crf 22 -an -f mp4 /dev/null
ffmpeg version git-snapshot-20180928-RPMFusion Copyright (c) 2000-2018
the FFmpeg developers
built with gcc 8 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg
--libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64
--optflags='-O2 -ffast-math -march=native -ftree-vectorize
-fomit-frame-pointer -pipe -fPIC' --enable-bzlib --disable-crystalhd
--enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls
--enable-ladspa --enable-libass --enable-libbluray --enable-libcdio
--enable-libfdk-aac --enable-nonfree --enable-indev=jack
--enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-libmp3lame --enable-openal --enable-opencl --disable-libopencv
--enable-opengl --enable-libopenjpeg --enable-libopus --enable-libpulse
--enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis
--enable-libv4l2 --enable-libvpx --enable-libwebp --enable-libx264
--enable-libx265 --enable-avfilter --enable-postproc --enable-pthreads
--disable-static --enable-shared --enable-gpl --enable-version3
--enable-nonfree --disable-debug --enable-stripping
--shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 56. 19.101 / 56. 19.101
libavcodec 58. 31.101 / 58. 31.101
libavformat 58. 18.103 / 58. 18.103
libavdevice 58. 4.104 / 58. 4.104
libavfilter 7. 33.100 / 7. 33.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[mpeg2video @ 0xe34a00] Invalid frame dimensions 0x0.
Last message repeated 10 times
Input #0, mpeg, from 'in.mpg':
Duration: 26:09:34.50, start: 1305.384367, bitrate: 91 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv,
progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps,
59.94 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x81]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream #0:3[0x1bf]: Data: dvd_nav_packet
Stream #0:4[0x22]: Subtitle: dvd_subtitle
Stream #0:5[0x21]: Subtitle: dvd_subtitle
Stream #0:6[0x20]: Subtitle: dvd_subtitle
File '/dev/null' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0xe5b180] using SAR=8/9
[libx264 @ 0xe5b180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 BMI2 AVX2
[libx264 @ 0xe5b180] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0xe5b180] 264 - core 157 - H.264/MPEG-4 AVC codec - Copyleft
2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=5
deblock=1:-1:-1 analyse=0x3:0x113 me=hex subme=8 psy=1 psy_rd=1.00:0.15
mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-3 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=3 weightb=1 open_gop=0 weightp=2 keyint=250
keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf
mbtree=1 crf=22.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
aq=1:1.00
Output #0, mp4, to '/dev/null':
Metadata:
encoder : Lavf58.18.103
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p,
720x480 [SAR 8:9 DAR 4:3], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc
Metadata:
encoder : Lavc58.31.101 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 2000 fps=132 q=-1.0 Lsize= 10708kB time=00:01:06.63
bitrate=1316.5kbits/s dup=401 drop=0 speed=4.39x
video:10684kB audio:0kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.229348%
[libx264 @ 0xe5b180] frame I:10 Avg QP:21.04 size: 33873
[libx264 @ 0xe5b180] frame P:593 Avg QP:23.63 size: 12243
[libx264 @ 0xe5b180] frame B:1397 Avg QP:25.67 size: 2391
[libx264 @ 0xe5b180] consecutive B-frames: 0.6% 18.5% 1.4% 79.6%
[libx264 @ 0xe5b180] mb I I16..4: 2.8% 90.7% 6.5%
[libx264 @ 0xe5b180] mb P I16..4: 0.5% 10.7% 0.7% P16..4: 47.9%
21.4% 10.1% 0.0% 0.0% skip: 8.7%
[libx264 @ 0xe5b180] mb B I16..4: 0.0% 0.5% 0.0% B16..8: 35.4%
5.2% 1.1% direct: 2.1% skip:55.6% L0:45.0% L1:42.4% BI:12.6%
[libx264 @ 0xe5b180] 8x8 transform intra:90.0% inter:76.7%
[libx264 @ 0xe5b180] direct mvs spatial:99.6% temporal:0.4%
[libx264 @ 0xe5b180] coded y,uvDC,uvAC intra: 88.7% 74.2% 28.5% inter:
17.7% 23.4% 1.0%
[libx264 @ 0xe5b180] i16 v,h,dc,p: 47% 12% 9% 32%
[libx264 @ 0xe5b180] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 19% 10% 13% 7% 10%
12% 10% 11% 10%
[libx264 @ 0xe5b180] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 6% 3% 8% 15%
17% 13% 11% 9%
[libx264 @ 0xe5b180] i8c dc,h,v,p: 39% 24% 25% 12%
[libx264 @ 0xe5b180] Weighted P-Frames: Y:17.7% UV:13.0%
[libx264 @ 0xe5b180] ref P L0: 52.3% 18.7% 17.0% 6.0% 5.0% 1.0%
[libx264 @ 0xe5b180] ref B L0: 89.7% 7.1% 2.7% 0.6%
[libx264 @ 0xe5b180] ref B L1: 99.5% 0.5%
[libx264 @ 0xe5b180] kb/s:1311.43
Also, I used ffprobe:
ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c
interlaced_frame=1
2052
ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c
interlaced_frame=0
30347
This means there are at least some interlaced frames. Is yadif called for ?
And the frames have two different durations:
ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c
pkt_duration_time
32399
ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c
pkt_duration_time=0.033367
17227
ffprobe -show_frames -select_streams v -i in.mpg 2>&1 | grep -c
pkt_duration_time=0.050044
15172
which generally alternate.
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