如何在 FFMpeg 中连接两个或多个具有相同宽度和不同高度的视频并保持相同的纵横比？
How to concatenate two or more videos with same width and different height in FFMpeg and to maintain the same aspect ratio?
我有五个视频部分要全部拼接。每五个视频的宽度和高度都相同。第二部分是另外2个视频的hstack，第三部分是另外3个视频的hstack和vstack。虽然连接了所有五个视频部分，但最终视频中的宽高比并未保持不变。由于我是ffmpeg的新手，请帮助我解决问题
我在我的最终过滤器复合体中尝试使用该命令并减少我每秒使用的帧数。
"ffmpeg -i
final.mp4 -vf scale=1280:480 -filter:v fps=fps=30 finalNew.mp4"
但没有任何效果。
还帮助我使用 hstack 进行缩放，以在下面的命令中保持第二部分的纵横比
Command: ffmpeg -i vid1.mkv -i vid2.mkv -filter_complex "[0:v]scale=-1:480[v0];[0:v][1:v]hstack=inputs=2"vid3.mkv
图片
second part
third part
videochunks
我已经控制了我视频的信息
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv
ffmpeg version N-94911-g197985c5bf Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190807
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 35.100 / 56. 35.100
libavcodec 58. 56.101 / 58. 56.101
libavformat 58. 32.104 / 58. 32.104
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.102 / 7. 58.102
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, matroska,webm, from 'part1.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:44.00, start: 0.000000, bitrate: 189 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:44.000000000
Input #1, matroska,webm, from 'part2.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:01:22.07, start: 0.000000, bitrate: 113 kb/s
Stream #1:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:01:22.066000000
Input #2, matroska,webm, from 'part3.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:42.03, start: 0.000000, bitrate: 405 kb/s
Stream #2:0: Video: h264 (High), yuv420p(progressive), 640x720 [SAR 9:16 DAR 1:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:42.033000000
Input #3, matroska,webm, from 'part4.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:21.00, start: 0.000000, bitrate: 298 kb/s
Stream #3:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:21.000000000
Input #4, matroska,webm, from 'part5.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:16.00, start: 0.000000, bitrate: 169 kb/s
Stream #4:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:16.000000000
如果您想保留输入的 9:16 SAR：
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv -filter_complex "[0]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[0v];[1]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[1v];[2]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[2v];[3]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[3v];[4]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[4v];[0v][1v][2v][3v][4v]concat=n=5:v=1:a=0[v]" -map "[v]" output.mp4
但是你的输入看起来很紧张，所以我假设你想要一个 1:1 SAR:
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv -filter_complex "[0]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[0v];[1]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[1v];[2]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[2v];[3]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[3v];[4]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[4v];[0v][1v][2v][3v][4v]concat=n=5:v=1:a=0[v]" -map "[v]" output.mp4
我有五个视频部分要全部拼接。每五个视频的宽度和高度都相同。第二部分是另外2个视频的hstack，第三部分是另外3个视频的hstack和vstack。虽然连接了所有五个视频部分，但最终视频中的宽高比并未保持不变。由于我是ffmpeg的新手，请帮助我解决问题
我在我的最终过滤器复合体中尝试使用该命令并减少我每秒使用的帧数。
"ffmpeg -i
final.mp4 -vf scale=1280:480 -filter:v fps=fps=30 finalNew.mp4"
但没有任何效果。 还帮助我使用 hstack 进行缩放，以在下面的命令中保持第二部分的纵横比
Command: ffmpeg -i vid1.mkv -i vid2.mkv -filter_complex "[0:v]scale=-1:480[v0];[0:v][1:v]hstack=inputs=2"vid3.mkv
图片
second part
third part
videochunks
我已经控制了我视频的信息
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv
ffmpeg version N-94911-g197985c5bf Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190807
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
libavutil 56. 35.100 / 56. 35.100
libavcodec 58. 56.101 / 58. 56.101
libavformat 58. 32.104 / 58. 32.104
libavdevice 58. 9.100 / 58. 9.100
libavfilter 7. 58.102 / 7. 58.102
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, matroska,webm, from 'part1.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:44.00, start: 0.000000, bitrate: 189 kb/s
Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:44.000000000
Input #1, matroska,webm, from 'part2.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:01:22.07, start: 0.000000, bitrate: 113 kb/s
Stream #1:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:01:22.066000000
Input #2, matroska,webm, from 'part3.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:42.03, start: 0.000000, bitrate: 405 kb/s
Stream #2:0: Video: h264 (High), yuv420p(progressive), 640x720 [SAR 9:16 DAR 1:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:42.033000000
Input #3, matroska,webm, from 'part4.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:21.00, start: 0.000000, bitrate: 298 kb/s
Stream #3:0: Video: h264 (High), yuv420p(progressive), 640x240 [SAR 9:16 DAR 3:2], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:21.000000000
Input #4, matroska,webm, from 'part5.mkv':
Metadata:
ENCODER : Lavf58.32.104
Duration: 00:00:16.00, start: 0.000000, bitrate: 169 kb/s
Stream #4:0(eng): Video: h264 (High), yuv420p(progressive), 640x480 [SAR 9:16 DAR 3:4], 30 fps, 30 tbr, 1k tbn, 60 tbc (default)
Metadata:
title : Video
ENCODER : Lavc58.56.101 libx264
DURATION : 00:00:16.000000000
如果您想保留输入的 9:16 SAR：
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv -filter_complex "[0]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[0v];[1]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[1v];[2]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[2v];[3]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[3v];[4]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=9/16[4v];[0v][1v][2v][3v][4v]concat=n=5:v=1:a=0[v]" -map "[v]" output.mp4
但是你的输入看起来很紧张，所以我假设你想要一个 1:1 SAR:
ffmpeg -i part1.mkv -i part2.mkv -i part3.mkv -i part4.mkv -i part5.mkv -filter_complex "[0]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[0v];[1]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[1v];[2]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[2v];[3]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[3v];[4]scale=640:480:force_original_aspect_ratio=decrease,pad=640:480:(ow-iw)/2:(oh-ih)/2,setsar=1[4v];[0v][1v][2v][3v][4v]concat=n=5:v=1:a=0[v]" -map "[v]" output.mp4