No hay miniaturas o propiedades después de reducir el video vertical de Android con ffmpeg

0

Tengo muchos videos tomados en 1080p usando un Nexus 5 con Android Lollipop. Los he reducido a 720p con ffmpeg v3.1.5 (desde entonces configuré la calidad de grabación de video a 720p antes de que alguien lo señale). Algunos están en orientación vertical. Yo uso el siguiente comando en esos:

ffmpeg -i VID_20150919_121521.mp4 -vf scale=720:-1 VID_20150919_121521-2.mp4

Estoy feliz de dejar que ffmpeg haga lo suyo. Estoy contento con los resultados. Sin embargo, me sorprendió saber que no necesitaba usar la opción de transposición. Como puede ver en el resultado a continuación, parece haber algunos metadatos de rotación. No tengo idea si esto es relevante, solo poniéndolo ahí. Ahora esto funciona técnicamente: el video se escala a 720p y se reproduce en la orientación correcta en VLC, pero no hay una miniatura del explorador de Windows 7 y en los detalles de las propiedades no hay ancho ni altura de cuadros ni información de velocidad de cuadros. Todos mis otros videos de paisaje reducen la escala muy bien y obtengo una imagen en miniatura y de cuadro. ¿Qué está pasando y cómo lo soluciono?

ffmpeg version 3.1.5 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.4.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
  libavutil      55. 28.100 / 55. 28.100
  libavcodec     57. 48.101 / 57. 48.101
  libavformat    57. 41.100 / 57. 41.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 47.100 /  6. 47.100
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20150919_121521.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2015-09-19 16:15:29
    location        : +45.4699-075.5184/
    location-eng    : +45.4699-075.5184/
  Duration: 00:00:06.53, start: 0.000000, bitrate: 12568 kb/s
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080, 12217 kb/s, SAR 1:1 DAR 16:9, 30.32 fps, 30 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      rotate          : 90
      creation_time   : 2015-09-19 16:15:29
      handler_name    : VideoHandle
    Side data:
      displaymatrix: rotation of -90.00 degrees
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
    Metadata:
      creation_time   : 2015-09-19 16:15:29
      handler_name    : SoundHandle
[libx264 @ 0000000002d7fa80] using SAR=1/1
[libx264 @ 0000000002d7fa80] using cpu capabilities: MMX2 SSE2Fast LZCNT
[libx264 @ 0000000002d7fa80] profile High, level 3.1
[libx264 @ 0000000002d7fa80] 264 - core 148 r2721 72d53ab - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - 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=4 lookahead_threads=1 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=25 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
[mp4 @ 00000000005ef4e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    Last message repeated 1 times
Output #0, mp4, to 'VID_20150919_121521-2.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    location-eng    : +45.4699-075.5184/
    location        : +45.4699-075.5184/
    encoder         : Lavf57.41.100
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 720x1280 [SAR 1:1 DAR 9:16], q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
    Metadata:
      handler_name    : VideoHandle
      creation_time   : 2015-09-19 16:15:29
      encoder         : Lavc57.48.101 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      creation_time   : 2015-09-19 16:15:29
      handler_name    : SoundHandle
      encoder         : Lavc57.48.101 aac
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
frame=   30 fps=0.0 q=0.0 size=       0kB time=00:00:01.06 bitrate=   0.4kbits/s speed=2.13x    
frame=   47 fps= 37 q=0.0 size=       0kB time=00:00:02.00 bitrate=   0.2kbits/s speed=1.59x    
frame=   55 fps= 31 q=29.0 size=     142kB time=00:00:02.00 bitrate= 580.1kbits/s speed=1.11x    
Past duration 0.608986 too large
frame=   63 fps= 26 q=29.0 size=     289kB time=00:00:03.00 bitrate= 788.3kbits/s speed=1.24x    
Past duration 0.619331 too large
Past duration 0.629662 too large
Past duration 0.639992 too large
Past duration 0.650322 too large
Past duration 0.660652 too large
Past duration 0.674324 too large
Past duration 0.684654 too large
Past duration 0.695000 too large
frame=   71 fps= 22 q=29.0 size=     482kB time=00:00:03.00 bitrate=1312.7kbits/s speed=0.951x    
Past duration 0.701653 too large
Past duration 0.714653 too large
Past duration 0.727654 too large
Past duration 0.736992 too large
Past duration 0.746330 too large
Past duration 0.755653 too large
Past duration 0.764992 too large
Past duration 0.782661 too large
frame=   79 fps= 21 q=29.0 size=     651kB time=00:00:03.00 bitrate=1772.3kbits/s speed=0.797x    
Past duration 0.790993 too large
Past duration 0.804665 too large
Past duration 0.811333 too large
Past duration 0.823326 too large
Past duration 0.835320 too large
Past duration 0.832985 too large
Past duration 0.857658 too large
frame=   86 fps= 20 q=29.0 size=     786kB time=00:00:03.00 bitrate=2141.7kbits/s speed=0.696x    
Past duration 0.865990 too large
Past duration 0.878990 too large
Past duration 0.885658 too large
Past duration 0.898659 too large
Past duration 0.911659 too large
Past duration 0.924660 too large
frame=   92 fps= 19 q=29.0 size=     900kB time=00:00:03.00 bitrate=2452.0kbits/s speed=0.62x    
Past duration 0.931999 too large
Past duration 0.939323 too large
Past duration 0.952660 too large
Past duration 0.965996 too large
Past duration 0.979332 too large
Past duration 0.988655 too large
Past duration 0.997993 too large
frame=  100 fps= 18 q=29.0 size=    1055kB time=00:00:04.01 bitrate=2154.8kbits/s speed=0.735x    
frame=  107 fps= 18 q=29.0 size=    1186kB time=00:00:04.01 bitrate=2421.8kbits/s speed=0.665x    
frame=  115 fps= 17 q=29.0 size=    1325kB time=00:00:04.01 bitrate=2707.1kbits/s speed=0.594x    
frame=  123 fps= 17 q=29.0 size=    1458kB time=00:00:04.01 bitrate=2979.0kbits/s speed=0.545x    
frame=  130 fps= 17 q=29.0 size=    1587kB time=00:00:05.01 bitrate=2592.5kbits/s speed=0.637x    
frame=  135 fps= 16 q=29.0 size=    1676kB time=00:00:05.01 bitrate=2738.8kbits/s speed=0.597x    
frame=  143 fps= 16 q=29.0 size=    1828kB time=00:00:05.01 bitrate=2986.4kbits/s speed=0.552x    
frame=  150 fps= 16 q=29.0 size=    1963kB time=00:00:05.01 bitrate=3207.7kbits/s speed=0.523x    
frame=  156 fps= 15 q=29.0 size=    2055kB time=00:00:06.01 bitrate=2799.0kbits/s speed=0.594x    
frame=  163 fps= 15 q=29.0 size=    2208kB time=00:00:06.01 bitrate=3006.9kbits/s speed=0.561x    
frame=  171 fps= 15 q=29.0 size=    2373kB time=00:00:06.01 bitrate=3230.9kbits/s speed=0.525x    
frame=  179 fps= 15 q=29.0 size=    2518kB time=00:00:06.01 bitrate=3428.5kbits/s speed=0.494x    
frame=  185 fps= 15 q=29.0 size=    2631kB time=00:00:06.01 bitrate=3583.0kbits/s speed=0.475x    
frame=  191 fps= 14 q=29.0 size=    2738kB time=00:00:06.03 bitrate=3715.2kbits/s speed=0.456x    
frame=  194 fps= 12 q=-1.0 Lsize=    3555kB time=00:00:06.52 bitrate=4461.1kbits/s speed=0.398x    
video:3490kB audio:56kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.233024%
[libx264 @ 0000000002d7fa80] frame I:3     Avg QP:23.00  size: 34556
[libx264 @ 0000000002d7fa80] frame P:50    Avg QP:25.33  size: 30594
[libx264 @ 0000000002d7fa80] frame B:141   Avg QP:26.77  size: 13760
[libx264 @ 0000000002d7fa80] consecutive B-frames:  1.5%  3.1%  4.6% 90.7%
[libx264 @ 0000000002d7fa80] mb I  I16..4: 11.0% 81.3%  7.7%
[libx264 @ 0000000002d7fa80] mb P  I16..4:  6.7% 40.0%  3.5%  P16..4: 33.6% 10.1%  4.3%  0.0%  0.0%    skip: 1.7%
[libx264 @ 0000000002d7fa80] mb B  I16..4:  1.3%  4.3%  0.2%  B16..8: 45.2%  8.6%  1.3%  direct:12.7%  skip:26.5%  L0:47.3% L1:47.7% BI: 5.0%
[libx264 @ 0000000002d7fa80] 8x8 transform intra:78.6% inter:77.3%
[libx264 @ 0000000002d7fa80] coded y,uvDC,uvAC intra: 61.0% 86.1% 49.6% inter: 28.9% 48.0% 5.4%
[libx264 @ 0000000002d7fa80] i16 v,h,dc,p: 19% 16%  8% 57%
[libx264 @ 0000000002d7fa80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 17% 21%  6%  7%  7%  8%  7% 10%
[libx264 @ 0000000002d7fa80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 23% 17%  6%  8%  6%  7%  5%  6%
[libx264 @ 0000000002d7fa80] i8c dc,h,v,p: 57% 18% 18%  7%
[libx264 @ 0000000002d7fa80] Weighted P-Frames: Y:4.0% UV:2.0%
[libx264 @ 0000000002d7fa80] ref P L0: 65.2% 12.5% 16.0%  6.1%  0.1%
[libx264 @ 0000000002d7fa80] ref B L0: 93.7%  5.1%  1.2%
[libx264 @ 0000000002d7fa80] ref B L1: 98.2%  1.8%
[libx264 @ 0000000002d7fa80] kb/s:4420.90
[aac @ 0000000000531400] Qavg: 673.912
video ffmpeg video-conversion brock
fuente
ffmpegrotará automáticamente cuando se vuelva a codificar de acuerdo con los rotatemetadatos (no lo hace al copiar secuencias o al usar la -noautorotateopción). Por qué la miniatura y otra información no se muestra en Explorer es otro problema, probablemente no relacionado.
llogan
Retrato iPhone 4 video, mov a mp4, lo mismo. Que esta pasando?
brock

Respuestas:

0

Sin embargo, nunca resolví esto, dado que todos los jugadores recientes que intenté leyeron los metadatos de rotación y mostraron el video correctamente, usando la -noautorotateopción que @LordNeckbeard sugirió que funciona bien. Además, encontré una aplicación de proveedor de miniaturas y detalles del Explorador de Windows llamada Icaros que funciona muy bien para MKV y otros tipos de archivos no compatibles de forma nativa.

brock
fuente