我正在尝试创建视频的放大镜像效果，其转换过程类似于
Input -> Output
______________ ________________________________________
|Top Section | -> |Top Section + Zoomed top 1/3 Middle|
|Middle Section| -> |Middle Section + Zoomed mid 1/3 Middle|
|Bottom Section| -> |Middle Section + Zoomed bot 1/3 Middle|
______________ ________________________________________
我认为这可以作为一次复杂过滤器工作，但我不了解语法，因此我分两次进行，此时结合两个输入总是会引发错误。
我的原始视频是 1080:1920 @ 60 fps。
如果我 ffprobe 我得到两个文件
ffprobe version 4.2.4-1ubuntu0.1 Copyright (c) 2007-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Cropped/PXL_20210124_220945291.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.29.100
Duration: 00:00:45.05, start: 0.000000, bitrate: 3227 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1080x1920 [SAR 8:7 DAR 9:14], 3022 kb/s, 60 fps, 60 tbr, 15360 tbn, 120 tbc (default)
Metadata:
handler_name : VideoHandle
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 191 kb/s (default)
Metadata:
rotate : 90
handler_name : SoundHandle
ffprobe version 4.2.4-1ubuntu0.1 Copyright (c) 2007-2020 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './PXL_20210124_220945291.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2021-01-24T22:10:31.000000Z
com.android.capture.fps: 60.000000
Duration: 00:00:45.04, start: 0.000000, bitrate: 29957 kb/s
Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 191 kb/s (default)
Metadata:
rotate : 90
creation_time : 2021-01-24T22:10:31.000000Z
handler_name : SoundHandle
Stream #0:1(eng): Video: hevc (Main) (hev1 / 0x31766568), yuvj420p(pc, smpte170m/bt470bg/smpte170m), 1920x1080, 29760 kb/s, SAR 1:1 DAR 16:9, 59.97 fps, 60 tbr, 90k tbn, 90k tbc (default)
Metadata:
rotate : 90
creation_time : 2021-01-24T22:10:31.000000Z
handler_name : VideoHandle
Side data:
displaymatrix: rotation of -90.00 degrees
如果我尝试使用并排合并（我尝试过改变裁剪视频的比例和旋转，但到目前为止我无法得到正确的组合
ffmpeg -i PXL_20210124_220945291.mp4 -t 00:00:3 -vf crop=in_w*.4:in_h*.35:in_w*.275:in_h*.15, scale=1920:1080 -c:a copy -preset medium -pix_fmt yuv420p -metadata:s:v:0 rotate=90 -y Cropped/PXL_20210124_220945291.mp4
ffmpeg -i PXL_20210124_220945291.mp4 -i Cropped/PXL_20210124_220945291.mp4.mkv -filter_complex 'hstack,format=yuv420p' -c:v libx265 -crf 18 -r 60 -y Combined/PXL_20210124_220945291.mp4
总是会回来
[Parsed_hstack_0 @ 0x55cafa398540] Input 1 height 1080 does not match input 0 height 1920.
[Parsed_hstack_0 @ 0x55cafa398540] Failed to configure output pad on Parsed_hstack_0
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #1:0
Conversion failed!
如果有用的话我可以发布文件的简短片段。