On Wed, Oct 21, 2020 at 08:14:50PM +0200, Michael Koch wrote: > Hi, > > I'm just testing the new afreqshift filter. > In my first test I did use only *.wav audio files. This test was successful. > > In my next test I'm using MP4 files. First I make a test video with a 5kHz > tone: > ffmpeg -f lavfi -i sine=f=5000:r=48000:d=5 -f lavfi -i color=black -lavfi > showspectrum=legend=1 -y test.mp4 > > Now I try to shift the frequency down by 4kHz: > ffmpeg -i test.mp4 -lavfi afreqshift=-4000,showspectrum=legend=1 -y out.mp4 > > The spectrum display is showing the expected 1kHz, but what I hear is 5kHz. > What's wrong with my command line? Why is the output of the afreqshift > filter not mapped to the output file? >
Something like this: ffmpeg -i test.mp4 -lavfi "asplit=2[a][b],[b]afreqshift=-4000,showspectrum=legend=1[b]" -map "[a]" -map "[b]" -y out.mp4 You ignored fact that showspectrum is just A->V filter. > Michael > > > > C:\Users\astro\Desktop>c:\ffmpeg\ffmpeg -f lavfi -i sine=f=5000:r=48000:d=5 > -f lavfi -i color=black -lavfi showspectrum=legend=1 -y test.mp4 > ffmpeg version 2020-10-21-git-289e964873-full_build-www.gyan.dev Copyright > (c) 2000-2020 the FFmpeg developers > built with gcc 10.2.0 (Rev3, Built by MSYS2 project) > configuration: --enable-gpl --enable-version3 --enable-static > --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv > --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma > --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh > --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca > --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e > --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 > --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx > --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi > --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf > --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec > --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx > --enable-libglslang --enable-vulkan --enable-libcdio --enable-libgme > --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb > --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame > --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm > --enable-libopencore-amrnb --enable-libopus --enable-libspeex > --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite > --enable-libmysofa --enable-librubberband --enable-libsoxr > --enable-chromaprint > libavutil 56. 60.100 / 56. 60.100 > libavcodec 58.111.101 / 58.111.101 > libavformat 58. 62.100 / 58. 62.100 > libavdevice 58. 11.102 / 58. 11.102 > libavfilter 7. 88.100 / 7. 88.100 > libswscale 5. 8.100 / 5. 8.100 > libswresample 3. 8.100 / 3. 8.100 > libpostproc 55. 8.100 / 55. 8.100 > Input #0, lavfi, from 'sine=f=5000:r=48000:d=5': > Duration: N/A, start: 0.000000, bitrate: 768 kb/s > Stream #0:0: Audio: pcm_s16le, 48000 Hz, mono, s16, 768 kb/s > Input #1, lavfi, from 'color=black': > Duration: N/A, start: 0.000000, bitrate: N/A > Stream #1:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR > 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc > Stream mapping: > Stream #0:0 (pcm_s16le) -> showspectrum (graph 0) > showspectrum (graph 0) -> Stream #0:0 (libx264) > Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native)) > Press [q] to stop, [?] for help > [libx264 @ 000001a6b13d0fc0] using SAR=1/1 > [libx264 @ 000001a6b13d0fc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 > SSE4.2 AVX FMA3 BMI2 AVX2 > [libx264 @ 000001a6b13d0fc0] profile High 4:4:4 Predictive, level 3.2, > 4:4:4, 8-bit > [libx264 @ 000001a6b13d0fc0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC > codec - Copyleft 2003-2020 - 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=4 threads=12 > lookahead_threads=2 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=25 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=1.40 aq=1:1.00 > Output #0, mp4, to 'test.mp4': > Metadata: > encoder : Lavf58.62.100 > Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 924x640 > [SAR 1:1 DAR 231:160], q=-1--1, 46.88 fps, 12k tbn, 46.88 tbc > Metadata: > encoder : Lavc58.111.101 libx264 > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A > Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, > 69 kb/s > Metadata: > encoder : Lavc58.111.101 aac > [Parsed_sine_0 @ 000001a6b1372040] EOF timestamp not reliableitrate= > 0.1kbits/s speed=6.67x > frame= 234 fps=0.0 q=-1.0 Lsize= 72kB time=00:00:05.01 bitrate= > 117.6kbits/s speed=6.45x > video:36kB audio:29kB subtitle:0kB other streams:0kB global headers:0kB > muxing overhead: 10.633892% > [libx264 @ 000001a6b13d0fc0] frame I:1 Avg QP:18.87 size: 11825 > [libx264 @ 000001a6b13d0fc0] frame P:60 Avg QP:14.80 size: 157 > [libx264 @ 000001a6b13d0fc0] frame B:173 Avg QP:17.49 size: 85 > [libx264 @ 000001a6b13d0fc0] consecutive B-frames: 0.9% 1.7% 0.0% 97.4% > [libx264 @ 000001a6b13d0fc0] mb I I16..4: 28.0% 62.2% 9.8% > [libx264 @ 000001a6b13d0fc0] mb P I16..4: 0.1% 0.1% 0.0% P16..4: 0.3% > 0.1% 0.0% 0.0% 0.0% skip:99.3% > [libx264 @ 000001a6b13d0fc0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.6% > 0.0% 0.0% direct: 0.0% skip:99.3% L0:50.9% L1:48.1% BI: 1.0% > [libx264 @ 000001a6b13d0fc0] 8x8 transform intra:63.0% inter:3.0% > [libx264 @ 000001a6b13d0fc0] coded y,u,v intra: 5.3% 0.0% 0.0% inter: 0.0% > 0.0% 0.0% > [libx264 @ 000001a6b13d0fc0] i16 v,h,dc,p: 77% 23% 1% 0% > [libx264 @ 000001a6b13d0fc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 65% 6% 29% 0% > 0% 0% 0% 0% 0% > [libx264 @ 000001a6b13d0fc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 29% 25% 1% > 1% 2% 3% 1% 2% > [libx264 @ 000001a6b13d0fc0] Weighted P-Frames: Y:0.0% UV:0.0% > [libx264 @ 000001a6b13d0fc0] ref P L0: 73.5% 8.1% 12.0% 6.5% > [libx264 @ 000001a6b13d0fc0] ref B L0: 69.6% 29.3% 1.1% > [libx264 @ 000001a6b13d0fc0] ref B L1: 95.1% 4.9% > [libx264 @ 000001a6b13d0fc0] kb/s:57.68 > [aac @ 000001a6b13d4840] Qavg: 62732.414 > > C:\Users\astro\Desktop>c:\ffmpeg\ffmpeg -i test.mp4 -lavfi > afreqshift=-4000,showspectrum=legend=1 -y out.mp4 > ffmpeg version 2020-10-21-git-289e964873-full_build-www.gyan.dev Copyright > (c) 2000-2020 the FFmpeg developers > built with gcc 10.2.0 (Rev3, Built by MSYS2 project) > configuration: --enable-gpl --enable-version3 --enable-static > --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv > --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma > --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh > --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca > --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e > --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 > --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx > --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi > --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf > --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec > --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx > --enable-libglslang --enable-vulkan --enable-libcdio --enable-libgme > --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb > --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame > --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm > --enable-libopencore-amrnb --enable-libopus --enable-libspeex > --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite > --enable-libmysofa --enable-librubberband --enable-libsoxr > --enable-chromaprint > libavutil 56. 60.100 / 56. 60.100 > libavcodec 58.111.101 / 58.111.101 > libavformat 58. 62.100 / 58. 62.100 > libavdevice 58. 11.102 / 58. 11.102 > libavfilter 7. 88.100 / 7. 88.100 > libswscale 5. 8.100 / 5. 8.100 > libswresample 3. 8.100 / 3. 8.100 > libpostproc 55. 8.100 / 55. 8.100 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4': > Metadata: > major_brand : isom > minor_version : 512 > compatible_brands: isomiso2avc1mp41 > encoder : Lavf58.62.100 > Duration: 00:00:05.02, start: 0.000000, bitrate: 117 kb/s > Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / > 0x31637661), yuv444p, 924x640 [SAR 1:1 DAR 231:160], 58 kb/s, 46.88 fps, > 46.88 tbr, 12k tbn, 93.75 tbc (default) > Metadata: > handler_name : VideoHandler > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, > fltp, 47 kb/s (default) > Metadata: > handler_name : SoundHandler > Stream mapping: > Stream #0:1 (aac) -> afreqshift (graph 0) > showspectrum (graph 0) -> Stream #0:0 (libx264) > Stream #0:1 -> #0:1 (aac (native) -> aac (native)) > Press [q] to stop, [?] for help > [libx264 @ 000001cf9fc32ec0] using SAR=1/1 > [libx264 @ 000001cf9fc32ec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 > SSE4.2 AVX FMA3 BMI2 AVX2 > [libx264 @ 000001cf9fc32ec0] profile High 4:4:4 Predictive, level 3.2, > 4:4:4, 8-bit > [libx264 @ 000001cf9fc32ec0] 264 - core 161 r3018 db0d417 - H.264/MPEG-4 AVC > codec - Copyleft 2003-2020 - 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=4 threads=12 > lookahead_threads=2 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=25 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=1.40 aq=1:1.00 > Output #0, mp4, to 'out.mp4': > Metadata: > major_brand : isom > minor_version : 512 > compatible_brands: isomiso2avc1mp41 > encoder : Lavf58.62.100 > Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv444p, 924x640 > [SAR 1:1 DAR 231:160], q=-1--1, 46.88 fps, 12k tbn, 46.88 tbc (default) > Metadata: > encoder : Lavc58.111.101 libx264 > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, > fltp, 69 kb/s (default) > Metadata: > handler_name : SoundHandler > encoder : Lavc58.111.101 aac > frame= 236 fps=0.0 q=-1.0 Lsize= 72kB time=00:00:05.01 bitrate= > 117.8kbits/s dup=1 drop=0 speed= 6.7x > video:38kB audio:27kB subtitle:0kB other streams:0kB global headers:0kB > muxing overhead: 10.648475% > [libx264 @ 000001cf9fc32ec0] frame I:1 Avg QP:17.09 size: 11790 > [libx264 @ 000001cf9fc32ec0] frame P:59 Avg QP:13.85 size: 157 > [libx264 @ 000001cf9fc32ec0] frame B:176 Avg QP:17.41 size: 98 > [libx264 @ 000001cf9fc32ec0] consecutive B-frames: 0.4% 0.0% 1.3% 98.3% > [libx264 @ 000001cf9fc32ec0] mb I I16..4: 48.2% 41.7% 10.0% > [libx264 @ 000001cf9fc32ec0] mb P I16..4: 0.0% 0.1% 0.0% P16..4: 0.4% > 0.1% 0.0% 0.0% 0.0% skip:99.4% > [libx264 @ 000001cf9fc32ec0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 1.5% > 0.0% 0.0% direct: 0.0% skip:98.4% L0:62.6% L1:36.9% BI: 0.4% > [libx264 @ 000001cf9fc32ec0] 8x8 transform intra:44.4% inter:4.5% > [libx264 @ 000001cf9fc32ec0] coded y,u,v intra: 5.6% 0.0% 0.0% inter: 0.0% > 0.0% 0.0% > [libx264 @ 000001cf9fc32ec0] i16 v,h,dc,p: 90% 10% 1% 0% > [libx264 @ 000001cf9fc32ec0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 58% 5% 36% 1% > 0% 0% 0% 0% 0% > [libx264 @ 000001cf9fc32ec0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 31% 25% 1% > 1% 2% 3% 1% 2% > [libx264 @ 000001cf9fc32ec0] Weighted P-Frames: Y:0.0% UV:0.0% > [libx264 @ 000001cf9fc32ec0] ref P L0: 74.2% 7.4% 11.9% 6.6% > [libx264 @ 000001cf9fc32ec0] ref B L0: 56.7% 42.8% 0.5% > [libx264 @ 000001cf9fc32ec0] ref B L1: 96.7% 3.3% > [libx264 @ 000001cf9fc32ec0] kb/s:60.88 > [aac @ 000001cf9fcd90c0] Qavg: 63059.797 > > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email 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