Dentro da minha pasta com várias imagens bmp de 13MP chamadas 0001.bmp, 0002.bmp, ... eu executo os seguintes comandos a partir da linha de comando.
Cortar imagens para 4K
ffmpeg -i %4d.bmp -vf "crop=3840:2160:184:240" croped%4d.bmp
Escale imagens
ffmpeg -i croped%4d.bmp -vf scale=1920:1080 scaled%4d.bmp
Comprimir imagens para vídeo
ffmpeg -r 25 -i scaled%4d.bmp -c:v libx264 -b:v 25000k -minrate 25000k -r 25 -s 1920x1080 -c:v libx264 -qp 20 -preset medium output.mp4
Mas o vídeo produzido só pode ser reproduzido no VLC, qualquer outro jogador falha.
Alguém com mais experiência no ffmpeg pode sugerir onde estou cometendo um erro?
Esta é a saída do console ffmpeg após o último comando:
ffmpeg version N-47062-g26c531c Copyright (c) 2000-2012 the FFmpeg developers
built on Nov 25 2012 12:21:26 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-pthreads --enable-runtime-cpudetect --enab
le-avisynth --enable-bzlib --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libop
encore-amrwb --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libop
enjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheo
ra --enable-libutvideo --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-lib
vpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
libavutil 52. 9.100 / 52. 9.100
libavcodec 54. 77.100 / 54. 77.100
libavformat 54. 37.100 / 54. 37.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 23.102 / 3. 23.102
libswscale 2. 1.102 / 2. 1.102
libswresample 0. 17.101 / 0. 17.101
libpostproc 52. 2.100 / 52. 2.100
[image2 @ 0202f180] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, image2, from 'scaled%4d.bmp': Duration: 00:00:04.96, start: 0.000000, bitrate: N/A
Stream #0:0: Video: bmp, bgr24, 1920x1080, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 037792c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
[libx264 @ 037792c0] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
[libx264 @ 037792c0] 264 - core 128 r2216 198a7ea - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - ht
tp://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subm
e=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=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 in
terlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 wei
ghtb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=
20 ip_ratio=1.40 pb_ratio=1.30 aq=0
Output #0, mp4, to 'video.mp4':
Metadata: encoder : Lavf54.37.100
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv444p, 1920x1080, q=-1--1, 25000 kb/s, 1280 0 tbn, 25 tbc
Stream mapping: Stream #0:0 -> #0:0 (bmp -> libx264)
frame= 124 fps=2.9 q=-1.0 Lsize= 42311kB time=00:00:04.88 bitrate=71027.1kbits/s
video:42309kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.005367%
[libx264 @ 037792c0] frame I:1 Avg QP:17.00 size:579142
[libx264 @ 037792c0] frame P:93 Avg QP:20.00 size:375357
[libx264 @ 037792c0] frame B:30 Avg QP:22.00 size:261208
[libx264 @ 037792c0] consecutive B-frames: 51.6% 48.4% 0.0% 0.0%
[libx264 @ 037792c0] mb I I16..4: 3.5% 77.5% 19.0%
[libx264 @ 037792c0] mb P I16..4: 2.6% 47.2% 11.4% P16..4: 10.3% 16.7% 11.7% 0.0% 0.0% skip: 0.1%
[libx264 @ 037792c0] mb B I16..4: 2.0% 34.1% 3.8% B16..8: 20.3% 13.7% 6.3% direct:19.0% skip: 0.9%
L0:39.1% L1:20.8% BI:40.1%
[libx264 @ 037792c0] 8x8 transform intra:78.6% inter:63.5%
[libx264 @ 037792c0] coded y,u,v intra: 99.6% 72.4% 80.8% inter: 91.1% 65.5% 75.5%
[libx264 @ 037792c0] i16 v,h,dc,p: 7% 7% 54% 32%
[libx264 @ 037792c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 17% 32% 5% 6% 6% 8% 6% 10%
[libx264 @ 037792c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 9% 12% 23% 9% 10% 8% 11% 7% 10%
[libx264 @ 037792c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 037792c0] ref P L0: 31.1% 12.4% 30.4% 26.0%
[libx264 @ 037792c0] ref B L0: 58.7% 41.3%
[libx264 @ 037792c0] kb/s:69876.70
Obrigado!