问题描述
我正在尝试剪切视频并将其转换为h265，但是无法以与原始视频相同的方式查找输出文件（例如，关键帧可以每隔1秒钟跳到一个关键帧，相隔15秒）。
我一直在尝试使用以下命令每2秒强制设置关键帧，但这似乎不起作用（输入的帧速率为25 fps）：
ffmpeg -i "D:\test\example.mp4" -ss 0 -t 60 -c:v libx265 -an -x265-params "crf=25:keyint=52:min-keyint=52:no-scenecut" "D:\test\example\example_0.mp4" -hwaccel cuda -hwaccel_output_format cuda
我在做什么错了？
编辑：完整运行日志：
ffmpeg -i "D:\test\example.mp4" -ss 0 -t 60 -c:v libx265 -an -x265-params "crf=25:keyint=52:min-keyint=52:no-scenecut" "D:\test\example\example_0.mp4" -hwaccel cuda -hwaccel_output_format cuda
ffmpeg version 4.2.3 copyright (c) 2000-2020 the FFmpeg developers
built with gcc 9.3.1 (GCC) 20200523
configuration: --disable-static --enable-shared --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-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Trailing options were found on the commandline.
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001dabdc30fc0] stream 0,timescale not set
Input #0,mov,mj2,from 'D:\test\example.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
track : 1
comment : www.dvdvideosoft.com
title : Final Four Classic,2004: Maccabi Elite Tel Aviv-Skipper Bologna
encoder : Lavf55.19.104
Duration: 01:38:43.57,start: 0.000000,bitrate: 1076 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661),yuv420p,854x480 [SAR 1:1 DAR 427:240],944 kb/s,25 fps,25 tbr,90k tbn,50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D),44100 Hz,stereo,fltp,125 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2: Video: mjpeg (Baseline),yuvj420p(pc,bt470bg/unkNown/unkNown),480x360,90k tbr,90k tbc (attached pic)
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> hevc (libx265))
Press [q] to stop,[?] for help
x265 [info]: HEVC encoder version 3.3+29-1e3dbf09ee4f
x265 [info]: build info [Windows][GCC 9.3.1][64 bit] 8bit+10bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: Main profile,Level-3 (Main tier)
x265 [info]: Thread pool created using 16 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 4 / wpp(8 rows)
x265 [warning]: Source height < 720p; disabling lookahead-slices
x265 [info]: Coding QT: max CU size,min CU size : 64 / 8
x265 [info]: Residual QT: max TU size,max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias : 25 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing deblock sao
Output #0,to 'D:\test\example\example_0.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
track : 1
comment : www.dvdvideosoft.com
title : Final Four Classic,2004: Maccabi Elite Tel Aviv-Skipper Bologna
encoder : Lavf58.29.100
Stream #0:0(und): Video: hevc (libx265) (hev1 / 0x31766568),q=2-31,12800 tbn,25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.54.100 libx265
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 1500 fps=116 q=-0.0 Lsize= 3811kB time=00:00:59.88 bitrate= 521.4kbits/s speed=4.62x
video:3789kB audio:0kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.581860%
x265 [info]: frame I: 10,Avg QP:26.67 kb/s: 3043.86
x265 [info]: frame P: 395,Avg QP:28.57 kb/s: 1282.13
x265 [info]: frame B: 1095,Avg QP:34.31 kb/s: 217.24
x265 [info]: Weighted P-Frames: Y:3.8% UV:0.8%
x265 [info]: consecutive B-frames: 5.4% 5.4% 13.1% 65.4% 10.6%
encoded 1500 frames in 12.93s (116.05 fps),516.51 kb/s,Avg QP:32.75
解决方法
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