avconv输出每个视频的横向旋转，无论元数据或转置

我想将.mov文件转换为.mp4，以便它们可以在任何设备上播放。我使用的是avconv v0.20-6：9.20-0ubuntu0.14.04.1（建立于2016年12月7日，gcc 4,8）的ubuntu 14.04。avconv输出每个视频的横向旋转，无论元数据或转置

如果我只是尝试：

avconv -i input.mov output.mp4

将其转换为MP4罚款，但如果视频的画像会自动旋转为横向。如果视频是横向的，则不会旋转。我也试过用我的android设备拍摄的mp4视频，同样的事情发生。这是一个MOV文件中的原始元数据（命令来获取元数据是第一行）：

avconv -i IMG_0022.MOV 
avconv version 9.20-6:9.20-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers 
    built on Dec 7 2016 21:22:31 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1d5e240] Could not find codec parameters (Data: mebx/0x7862656D, 0 kb/s) 
    Last message repeated 1 times 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0022.MOV': 
    Metadata: 
    major_brand  : qt 
    minor_version : 0 
    compatible_brands: qt 
    creation_time : 2017-01-25 22:58:59 
    Duration: 00:00:03.18, start: 0.000000, bitrate: 10705 kb/s 
    Stream #0.0(und): Video: h264 (Baseline), yuv420p, 1280x720, 10823 kb/s, 24.01 fps, 24 tbr, 600 tbn 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.1(und): Audio: aac, 44100 Hz, mono, fltp, 61 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.2(und): Data: mebx/0x7862656D, 0 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.3(und): Data: mebx/0x7862656D, 0 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
At least one output file must be specified

当我跑

avconv -i IMG_0022.mov -strict -2 out.mp4

这是我得到：

avconv -i IMG_0022.MOV -strict -2 out.mp4 
avconv version 9.20-6:9.20-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers 
    built on Dec 7 2016 21:22:31 with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3) 
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x1fdab00] Could not find codec parameters (Data: mebx/0x7862656D, 0 kb/s) 
    Last message repeated 1 times 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'IMG_0022.MOV': 
    Metadata: 
    major_brand  : qt 
    minor_version : 0 
    compatible_brands: qt 
    creation_time : 2017-01-25 22:58:59 
    Duration: 00:00:03.18, start: 0.000000, bitrate: 10705 kb/s 
    Stream #0.0(und): Video: h264 (Baseline), yuv420p, 1280x720, 10823 kb/s, 24.01 fps, 24 tbr, 600 tbn 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.1(und): Audio: aac, 44100 Hz, mono, fltp, 61 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.2(und): Data: mebx/0x7862656D, 0 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.3(und): Data: mebx/0x7862656D, 0 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
File 'out.mp4' already exists. Overwrite ? [y/N] y 
[libx264 @ 0x1ff9360] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2 
[libx264 @ 0x1ff9360] profile High, level 3.1 
[libx264 @ 0x1ff9360] 264 - core 142 r2389 956c8d8 - 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=6 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=24 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=1.25 aq=1:1.00 
Output #0, mp4, to 'out.mp4': 
    Metadata: 
    major_brand  : qt 
    minor_version : 0 
    compatible_brands: qt 
    creation_time : 2017-01-25 22:58:59 
    encoder   : Lavf54.20.4 
    Stream #0.0(und): Video: libx264, yuv420p, 1280x720, q=-1--1, 22500 tbn, 24.01 tbc 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
    Stream #0.1(und): Audio: aac, 44100 Hz, mono, fltp, 200 kb/s 
    Metadata: 
     creation_time : 2017-01-25 22:58:59 
Stream mapping: 
    Stream #0:0 -> #0:0 (h264 -> libx264) 
    Stream #0:1 -> #0:1 (aac -> aac) 
Press ctrl-c to stop encoding 
frame= 75 fps= 29 q=32765.0 Lsize= 1673kB time=3.04 bitrate=4507.2kbits/s 
video:595kB audio:74kB global headers:0kB muxing overhead 149.985988% 
[libx264 @ 0x1ff9360] frame I:1  Avg QP:27.41 size: 47219 
[libx264 @ 0x1ff9360] frame P:43 Avg QP:25.60 size: 28610 
[libx264 @ 0x1ff9360] frame B:31 Avg QP:27.26 size: 11417 
[libx264 @ 0x1ff9360] consecutive B-frames: 21.3% 66.7% 12.0% 0.0% 
[libx264 @ 0x1ff9360] mb I I16..4: 1.5% 76.0% 22.5% 
[libx264 @ 0x1ff9360] mb P I16..4: 2.5% 13.7% 5.9% P16..4: 50.4% 15.5% 7.5% 0.0% 0.0% skip: 4.4% 
[libx264 @ 0x1ff9360] mb B I16..4: 0.5% 2.1% 1.0% B16..8: 52.8% 4.8% 0.8% direct: 6.6% skip:31.4% L0:44.6% L1:51.8% BI: 3.6% 
[libx264 @ 0x1ff9360] 8x8 transform intra:62.9% inter:58.8% 
[libx264 @ 0x1ff9360] coded y,uvDC,uvAC intra: 79.0% 89.8% 36.9% inter: 33.5% 55.1% 1.6% 
[libx264 @ 0x1ff9360] i16 v,h,dc,p: 7% 11% 32% 50% 
[libx264 @ 0x1ff9360] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 8% 9% 17% 3% 20% 25% 10% 3% 4% 
[libx264 @ 0x1ff9360] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 12% 22% 4% 18% 19% 6% 3% 3% 
[libx264 @ 0x1ff9360] i8c dc,h,v,p: 59% 18% 15% 8% 
[libx264 @ 0x1ff9360] Weighted P-Frames: Y:27.9% UV:16.3% 
[libx264 @ 0x1ff9360] ref P L0: 67.4% 15.9% 12.2% 3.9% 0.6% 
[libx264 @ 0x1ff9360] ref B L0: 92.0% 7.4% 0.5% 
[libx264 @ 0x1ff9360] ref B L1: 99.2% 0.8% 
[libx264 @ 0x1ff9360] kb/s:4178.51

我知道转换过程中有一条警告消息，但我仍然获得有效的mp4，因此我不知道它是否是问题。我一直在使用转= 1试过，但它不会影响输出都： avconv -i input.mov -vf转= 1 out.mp4

来源

2017-01-26 Alex Egli

我尝试了一下，终于找到了工作的组合：

avconv -i input.mov -vf "transpose=1" -codec:v libx264 -strict experimental out.mp4

我认为这是我必须-strict -2代替-strict实验，虽然从文档我不能告诉什么2名映射到为什么会导致它忽略调换。我曾尝试过指定编解码器，但它没有奏效，但也许它是我以前使用的编解码器规范导致它被忽略的特定组合或参数。

来源

2017-01-26 20:46:30

avconv输出每个视频的横向旋转，无论元数据或转置

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