Допустимо ли писать [0:v]scale=-1:360,fps[0:v]; в начале фильтра? Я пытаюсь понять, почему мой фильтр не работает. На самом деле, это работает, но разрешение остается прежним.
Полный фильтр это:
ffmpeg -i l.wmv -filter_complex "[0:v]scale=-1:360,fps[0:v];[0:v]trim=start=0:duration=1,setpts=PTS-STARTPTS[c0v];[0:a]atrim=start=0:duration=1,asetpts=PTS-STARTPTS[c0a];[0:v]trim=start=10:duration=1,setpts=PTS-STARTPTS[c1v];[0:a]atrim=start=10:duration=1,asetpts=PTS-STARTPTS[c1a];[c0v][c0a][c1v][c1a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" -c:v wmv2 -b:v 2M -c:a libopus jump.mkv
или чуть более наглядно:
ffmpeg -i l.wmv -filter_complex
[0:v]scale=-1:360,fps[0:v];
[0:v]trim=start=0:duration=1,setpts=PTS-STARTPTS[c0v];
[0:a]atrim=start=0:duration=1,asetpts=PTS-STARTPTS[c0a];
[0:v]trim=start=10:duration=1,setpts=PTS-STARTPTS[c1v];
[0:a]atrim=start=10:duration=1,asetpts=PTS-STARTPTS[c1a];
[c0v][c0a][c1v][c1a]concat=n=2:v=1:a=1[v][a]
-map "[v]" -map "[a]"
-c:v wmv2 -b:v 2M -c:a libopus jump.mkv
Edit1: обновленная команда, теперь с дополнительным спецификатором потока [vid]:
ffmpeg -i l.wmv -filter_complex "[0:v]scale=-1:360,fps[vid];[vid]trim=start=0:duration=1,setpts=PTS-STARTPTS[c0v];[0:a]atrim=start=0:duration=1,asetpts=PTS-STARTPTS[c0a];[vid]trim=start=10:duration=1,setpts=PTS-STARTPTS[c1v];[0:a]atrim=start=10:duration=1,asetpts=PTS-STARTPTS[c1a];[c0v][c0a][c1v][c1a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" -c:v wmv2 -b:v 2M -c:a libopus jump.mkv
полный журнал:
D:\_convert\jump>ffmpeg -i l.wmv -filter_complex "[0:v]scale=-1:360,fps[vid];[vid]trim=start=0:duration=1,setpts=PTS-STARTPTS[c0v];[0:a]atrim=start=0:duration=1,asetpts=PTS-STARTPTS[c0a];[vid]trim=start=10:duration=1,setpts=PTS-STARTPTS[c1v];[0:a]atrim=start=10:duration=1,asetpts=PTS-STARTPTS[c1a];[c0v][c0a][c1v][c1a]concat=n=2:v=1:a=1[v][a]" -map "[v]" -map "[a]" -c:v wmv2 -b:v 2M -c:a libopus jump.mkv
ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7.2.0 (Rev1, Built by MSYS2 project)
configuration: --prefix=/mingw64 --target-os=mingw32 --arch=x86_64 --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-d3d11va --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libcaca --enable-libcelt --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libx265 --enable-libxvid --enable-libvpx --enable-libwebp --enable-openal --enable-libwavpack --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-static --enable-swresample --enable-version3 --enable-zlib --disable-doc
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[wmv3 @ 0000000000ff4340] Extra data: 8 bits left, value: 0
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, asf, from 'l.wmv':
Metadata:
WM/ToolName : TMPGEnc Video Mastering Works 5 Version. 5.4.0.100
WMFSDKVersion : 12.0.7601.17514
WMFSDKNeeded : 0.0.0.0000
VBR Peak : 20000000
Buffer Average : 397799
IsVBR : 1
DeviceConformanceTemplate: MP@HL
encoder : Lavf57.71.100
Duration: 00:02:01.16, start: 0.312000, bitrate: 3901 kb/s
Stream #0:0(jpn): Video: wmv3 (Main) (WMV3 / 0x33564D57), yuv420p, 1280x720, 4000 kb/s, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc
Stream #0:1(jpn): Audio: wmav2 (a[1][0][0] / 0x0161), 48000 Hz, stereo, fltp, 128 kb/s
[wmv3 @ 0000000000ff67c0] Extra data: 8 bits left, value: 0
Stream mapping:
Stream #0:0 (wmv3) -> scale
Stream #0:0 (wmv3) -> trim
Stream #0:1 (wmav2) -> atrim
Stream #0:1 (wmav2) -> atrim
concat:out:v0 -> Stream #0:0 (wmv2)
concat:out:a0 -> Stream #0:1 (libopus)
Press [q] to stop, [?] for help
[Parsed_concat_10 @ 0000000003cfeec0] Input link in1:v0 parameters (size 1280x720, SAR 0:1) do not match the corresponding output link in0:v0 parameters (640x360, SAR 0:1)
[Parsed_concat_10 @ 0000000003cfeec0] Failed to configure output pad on Parsed_concat_10
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
Conversion failed!