New submission from Deyan <[email protected]>:
Hello,
ffmpeg is acting very strange when I pass to it video libx264/MP4 with variable
frame rate and then try to recode to libx264/MP4.
The Video I am testing with, is encoded from TS to libx264/MP4 with encoder
"HandBrake svn3703 2010121001", which by default encodes with FR "Same as
source", which in this case produces variable frame rate output.
When I try to use libx264 with MP4 output container the encoding is very very,
slow. It will probably finish after months for a movie with 90min length
When I try to use libx264 with MKV output container the speed is normal and the
movie is encoded with reasonable speed.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Meta info from the INPUT file:
[r...@spare Videos]# ffmpeg -v 9 -loglevel 99 -i VTS_01_4-VFR.mp4
FFmpeg version SVN-r25944, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 14 2010 15:39:24 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --prefix=/usr/local/ffmpeg --enable-libfaac --enable-libgsm
--enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads
--disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --enable-nonfree --enable-libtheora --enable-swscale
--enable-doc
libavutil 50.34. 0 / 50.34. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.99. 1 / 52.99. 1
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
libpostproc 51. 2. 0 / 51. 2. 0
[NULL @ 0x767e510] Probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x767e510] ISO: File Type Major Brand: mp42
[h264 @ 0x7681820] no picture
Last message repeated 1 times
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x767e510] All info found
Seems stream 0 codec frame rate differs from container frame rate: 180000.00
(180000/1) -> 90000.00 (180000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VTS_01_4-VFR.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2010-12-14 10:46:20
encoder : HandBrake svn3703 2010121001
Duration: 00:08:24.88, start: 0.000000, bitrate: 872 kb/s
Stream #0.0(und), 21, 1/90000: Video: h264, yuv420p, 720x480 [PAR 32:27 DAR
16:9], 1/180000, 706 kb/s, 23.93 fps, 90k tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2010-12-14 10:46:20
Stream #0.1(und), 64, 1/48000: Audio: aac, 48000 Hz, stereo, s16, 160 kb/s
Metadata:
creation_time : 2010-12-14 10:46:20
At least one output file must be specified
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Output with the very slow encoding MP4 container ( I am waiting like 5 minutes
for 1.6sec of movie to be processed)
[r...@spare Videos]# ffmpeg -y -i VTS_01_4-VFR.mp4 -b 512k -an -vcodec libx264
-vpre fast_firstpass -threads 0 /tmp/out.mp4
FFmpeg version SVN-r25944, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 14 2010 15:39:24 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --prefix=/usr/local/ffmpeg --enable-libfaac --enable-libgsm
--enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads
--disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --enable-nonfree --enable-libtheora --enable-swscale
--enable-doc
libavutil 50.34. 0 / 50.34. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.99. 1 / 52.99. 1
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
libpostproc 51. 2. 0 / 51. 2. 0
Seems stream 0 codec frame rate differs from container frame rate: 180000.00
(180000/1) -> 90000.00 (180000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VTS_01_4-VFR.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2010-12-14 10:46:20
encoder : HandBrake svn3703 2010121001
Duration: 00:08:24.88, start: 0.000000, bitrate: 872 kb/s
Stream #0.0(und): Video: h264, yuv420p, 720x480 [PAR 32:27 DAR 16:9], 706
kb/s, 23.93 fps, 90k tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2010-12-14 10:46:20
Stream #0.1(und): Audio: aac, 48000 Hz, stereo, s16, 160 kb/s
Metadata:
creation_time : 2010-12-14 10:46:20
[buffer @ 0x1c97d430] w:720 h:480 pixfmt:yuv420p
[libx264 @ 0x1c97c0f0] using SAR=32/27
[libx264 @ 0x1c97c0f0] MB rate (121500000) > level limit (983040)
[libx264 @ 0x1c97c0f0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle
SSE4.1 Cache64
[libx264 @ 0x1c97c0f0] profile Main, level 5.1
[libx264 @ 0x1c97c0f0] 264 - core 110 r1804 e89c4cf - H.264/MPEG-4 AVC codec -
Copyleft 2003-2010 - http://www.videolan.org/x264.html - options: cabac=1 ref=1
deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=0.00:0.00 mixed_ref=0
me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1
chroma_qp_offset=0 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=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=25 scenecut=40 intra_refresh=0
rc_lookahead=30 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=10
qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
Output #0, mp4, to '/tmp/out.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2010-12-14 10:46:20
encoder : Lavf52.88.0
Stream #0.0(und): Video: libx264, yuv420p, 720x480 [PAR 32:27 DAR 16:9],
q=10-51, 512 kb/s, 180k tbn, 90k tbc
Metadata:
creation_time : 2010-12-14 10:46:20
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=148820 fps=476 q=51.0 size= 5200kB time=1.65 bitrate=25771.1kbits/s
dup=148790 drop=0
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Output with normal speed encoding MKV container
[r...@spare Videos]# ffmpeg -y -i VTS_01_4-VFR.mp4 -b 512k -an -vcodec libx264
-vpre fast_firstpass -threads 0 /tmp/out.mkv
FFmpeg version SVN-r25944, Copyright (c) 2000-2010 the FFmpeg developers
built on Dec 14 2010 15:39:24 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
configuration: --prefix=/usr/local/ffmpeg --enable-libfaac --enable-libgsm
--enable-libmp3lame --enable-libvorbis --enable-libx264 --enable-libxvid
--enable-x11grab --enable-avfilter --enable-postproc --enable-pthreads
--disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --enable-nonfree --enable-libtheora --enable-swscale
--enable-doc
libavutil 50.34. 0 / 50.34. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.99. 1 / 52.99. 1
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
libpostproc 51. 2. 0 / 51. 2. 0
Seems stream 0 codec frame rate differs from container frame rate: 180000.00
(180000/1) -> 90000.00 (180000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VTS_01_4-VFR.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2010-12-14 10:46:20
encoder : HandBrake svn3703 2010121001
Duration: 00:08:24.88, start: 0.000000, bitrate: 872 kb/s
Stream #0.0(und): Video: h264, yuv420p, 720x480 [PAR 32:27 DAR 16:9], 706
kb/s, 23.93 fps, 90k tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2010-12-14 10:46:20
Stream #0.1(und): Audio: aac, 48000 Hz, stereo, s16, 160 kb/s
Metadata:
creation_time : 2010-12-14 10:46:20
[buffer @ 0x1224f6f0] w:720 h:480 pixfmt:yuv420p
[libx264 @ 0x1224e0f0] using SAR=32/27
[libx264 @ 0x1224e0f0] MB rate (121500000) > level limit (983040)
[libx264 @ 0x1224e0f0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle
SSE4.1 Cache64
[libx264 @ 0x1224e0f0] profile Main, level 5.1
[libx264 @ 0x1224e0f0] 264 - core 110 r1804 e89c4cf - H.264/MPEG-4 AVC codec -
Copyleft 2003-2010 - http://www.videolan.org/x264.html - options: cabac=1 ref=1
deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=0.00:0.00 mixed_ref=0
me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1
chroma_qp_offset=0 threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=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=25 scenecut=40 intra_refresh=0
rc_lookahead=30 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=10
qpmax=51 qpstep=4 ip_ratio=1.41 aq=1:1.00
Output #0, matroska, to '/tmp/out.mkv':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isomavc1
creation_time : 2010-12-14 10:46:20
encoder : Lavf52.88.0
Stream #0.0(und): Video: libx264, yuv420p, 720x480 [PAR 32:27 DAR 16:9],
q=10-51, 512 kb/s, 1k tbn, 90k tbc
Metadata:
creation_time : 2010-12-14 10:46:20
Stream mapping:
Stream #0.0 -> #0.0
Press [q] to stop encoding
frame=12083 fps=192 q=-1.0 Lsize= 30718kB time=504.31 bitrate= 499.0kbits/s
video:30632kB audio:0kB global headers:0kB muxing overhead 0.280174%
frame I:60 Avg QP:15.24 size: 41984
[libx264 @ 0x1224e0f0] frame P:3503 Avg QP:17.64 size: 6266
[libx264 @ 0x1224e0f0] frame B:8520 Avg QP:20.97 size: 809
[libx264 @ 0x1224e0f0] consecutive B-frames: 4.6% 0.9% 5.5% 89.0%
[libx264 @ 0x1224e0f0] mb I I16..4: 48.5% 0.0% 51.5%
[libx264 @ 0x1224e0f0] mb P I16..4: 10.8% 0.0% 0.0% P16..4: 52.5% 0.0%
0.0% 0.0% 0.0% skip:36.7%
[libx264 @ 0x1224e0f0] mb B I16..4: 1.5% 0.0% 0.0% B16..8: 16.6% 0.0%
0.0% direct: 8.2% skip:73.6% L0:42.1% L1:51.7% BI: 6.2%
[libx264 @ 0x1224e0f0] final ratefactor: 20.71
[libx264 @ 0x1224e0f0] coded y,uvDC,uvAC intra: 43.7% 63.1% 20.7% inter: 5.7%
15.7% 0.3%
[libx264 @ 0x1224e0f0] i16 v,h,dc,p: 39% 17% 39% 6%
[libx264 @ 0x1224e0f0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 16% 25% 3% 8% 6%
5% 5% 6%
[libx264 @ 0x1224e0f0] i8c dc,h,v,p: 52% 16% 29% 3%
[libx264 @ 0x1224e0f0] Weighted P-Frames: Y:2.6% UV:1.6%
[libx264 @ 0x1224e0f0] kb/s:497.48
----------
messages: 12948
priority: normal
status: new
substatus: new
title: MP4 container with variable frame rate source, very very slow encoding
type: bug
________________________________________________
FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2423>
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