After a long break from this issue, I have a new problem. For
example, I want to take a 24fps video and make it play slow-mo at
12fps. The input option -r is dropping frames, rather than slowing
down the playback speed. I don't have my main computer right now,
which uses the latest git master; I'm just using my laptop which uses
a macports build, so maybe that's the reason? Or am I using this
command wrong?
$ ffmpeg -r 24 -i /temp/leader.mp4 -r 12 test.mov
ffmpeg version 2.4.git-e113692 Copyright (c) 2000-2014 the FFmpeg developers
built on Oct 4 2014 21:20:35 with Apple LLVM version 6.0
(clang-600.0.51) (based on LLVM 3.5svn)
configuration: --prefix=/opt/local --enable-swscale
--enable-avfilter --enable-avresample --enable-libmp3lame
--enable-libvorbis --enable-libopus --enable-libtheora
--enable-libschroedinger --enable-libopenjpeg --enable-libmodplug
--enable-libvpx --enable-libspeex --enable-libass --enable-libbluray
--enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype
--enable-libfribidi --disable-indev=jack --disable-outdev=xv
--mandir=/opt/local/share/man --enable-shared --enable-pthreads
--cc=/usr/bin/clang --enable-vda --arch=x86_64 --enable-yasm
--enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
--enable-nonfree --enable-libfdk-aac --enable-libfaac
libavutil 54. 7.101 / 54. 7.101
libavcodec 56. 1.101 / 56. 1.101
libavformat 56. 5.100 / 56. 5.100
libavdevice 56. 1.100 / 56. 1.100
libavfilter 5. 1.102 / 5. 1.102
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.100 / 3. 1.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 1.100 / 53. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/temp/leader.mp4':
Metadata:
major_brand : M4V
minor_version : 1
compatible_brands: M4V mp42isom
creation_time : 2015-01-16 00:15:42
Duration: 00:00:08.09, start: 0.000000, bitrate: 2369 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661),
yuv420p(tv, bt709), 1920x1080, 2181 kb/s, 23.98 fps, 23.98 tbr, 24k
tbn, 47.95 tbc (default)
Metadata:
creation_time : 2015-01-16 00:15:42
handler_name : Mainconcept MP4 Video Media Handler
encoder : AVC Coding
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 189 kb/s (default)
Metadata:
creation_time : 2015-01-16 00:15:42
handler_name : Mainconcept MP4 Sound Media Handler
File 'test.mov' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fd9ab017000] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
[libx264 @ 0x7fd9ab017000] profile High, level 4.0
[libx264 @ 0x7fd9ab017000] 264 - core 142 - H.264/MPEG-4 AVC codec -
Copyleft 2003-2014 - 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=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=12 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, mov, to 'test.mov':
Metadata:
major_brand : M4V
minor_version : 1
compatible_brands: M4V mp42isom
encoder : Lavf56.5.100
Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661),
yuv420p, 1920x1080, q=-1--1, 12 fps, 12288 tbn, 12 tbc (default)
Metadata:
creation_time : 2015-01-16 00:15:42
handler_name : Mainconcept MP4 Video Media Handler
encoder : Lavc56.1.101 libx264
Stream #0:1(eng): Audio: aac (libfaac) (mp4a / 0x6134706D), 48000
Hz, stereo, s16, 128 kb/s (default)
Metadata:
creation_time : 2015-01-16 00:15:42
handler_name : Mainconcept MP4 Sound Media Handler
encoder : Lavc56.1.101 libfaac
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (libfaac))
Press [q] to stop, [?] for help
frame= 99 fps= 76 q=-1.0 Lsize= 335kB time=00:00:08.08 bitrate=
339.8kbits/s dup=0 drop=94
video:327kB audio:4kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 1.351535%
[libx264 @ 0x7fd9ab017000] frame I:2 Avg QP:20.20 size: 14859
[libx264 @ 0x7fd9ab017000] frame P:77 Avg QP:19.99 size: 3863
[libx264 @ 0x7fd9ab017000] frame B:20 Avg QP:12.33 size: 339
[libx264 @ 0x7fd9ab017000] consecutive B-frames: 72.7% 0.0% 3.0% 24.2%
[libx264 @ 0x7fd9ab017000] mb I I16..4: 25.2% 65.1% 9.6%
[libx264 @ 0x7fd9ab017000] mb P I16..4: 1.8% 8.8% 2.0% P16..4:
0.6% 0.1% 0.1% 0.0% 0.0% skip:86.6%
[libx264 @ 0x7fd9ab017000] mb B I16..4: 0.0% 0.0% 0.1% B16..8:
0.2% 0.0% 0.0% direct: 0.0% skip:99.7% L0:55.9% L1:43.8% BI: 0.3%
[libx264 @ 0x7fd9ab017000] 8x8 transform intra:69.1% inter:18.0%
[libx264 @ 0x7fd9ab017000] coded y,uvDC,uvAC intra: 8.9% 0.0% 0.0%
inter: 0.1% 0.0% 0.0%
[libx264 @ 0x7fd9ab017000] i16 v,h,dc,p: 69% 26% 5% 0%
[libx264 @ 0x7fd9ab017000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 49% 15% 35%
0% 0% 0% 0% 0% 0%
[libx264 @ 0x7fd9ab017000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 19% 22%
7% 4% 3% 4% 4% 4%
[libx264 @ 0x7fd9ab017000] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7fd9ab017000] Weighted P-Frames: Y:2.6% UV:0.0%
[libx264 @ 0x7fd9ab017000] ref P L0: 58.0% 3.9% 21.1% 15.5% 1.5%
[libx264 @ 0x7fd9ab017000] ref B L0: 96.1% 2.3% 1.6%
[libx264 @ 0x7fd9ab017000] ref B L1: 93.9% 6.1%
[libx264 @ 0x7fd9ab017000] kb/s:323.80
On 9/10/14, tim nicholson <nichot20-at-yahoo....@ffmpeg.org> wrote:
> On 10/09/14 07:59, Carl Eugen Hoyos wrote:
>> Dave Rice <dave <at> dericed.com> writes:
>>
>>>> h264 in avi is not going to be understood
>>>> by much other than ffmpeg...
>>
>> Since this was quoted a few times, I'd like to
>> repeat that H264 in avi works fine with WMP.
>> (Contrary to any other output container that
>> would also work fine with the input option -r).
>>
>
> My original comment related more to media processors than media players,
> if all you want to do is play then fine.
>
> If someone wants to change the frame rate its usually because they want
> it at that different frame rate in order to do something further with it
> (as was the case for the original query). In those circumstances I do
> not think the original comment was inaccurate, but I apologise for not
> being precise enough.
>
> (and you could argue that only one other app falls within the "not much"
> category)
>
>
>>>[...]
>
>
> --
> Tim.
> Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83
> _______________________________________________
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>
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