On 1/19/20, Michael Koch <[email protected]> wrote: > Hello, > > I've just found a problem that can be reproduced as follows: > > Step 1: Make a 6 seconds test video with 1kHz tone. The file is ok when > played. > > ffmpeg -f lavfi -i testsrc2=size=vga -f lavfi -i sine=1000 -t 6 -y video.mp4 > > > Step 2: Make a 10 seconds audio file with silence and a short 3kHz tone > at t=3s. The file is ok when played. > > ffmpeg -f lavfi -i "sine=3000:duration=0.1" -af adelay=3000,apad -t 10 > -y audio.wav > > > Step 3: Combine both files into one video, and the audio sources shall > be mixed: > > ffmpeg -i video.mp4 -i audio.wav -filter_complex > "[0:a][1:a]amix=weights='1.0 1.0'" -shortest -y out.mp4 > > The output video has the correct length 6s, but I don't understand why > the 1kHz tone disappears after 4s and the last 2s are silence. > > The console output is below.
Can not reproduce using nut container. > Michael > > > > F:\Test_Audio>c:\ffmpeg\ffmpeg -i video.mp4 -i audio.wav -filter_complex > "[0:a][ > 1:a]amix=weights='1.0 1.0'" -shortest -y out.mp4 > ffmpeg version git-2020-01-15-0dc0837 Copyright (c) 2000-2020 the FFmpeg > develop > ers > built with gcc 9.2.1 (GCC) 20200111 > configuration: --enable-gpl --enable-version3 --enable-sdl2 > --enable-fontconfi > g --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d > --enable-libb > luray --enable-libfreetype --enable-libmp3lame > --enable-libopencore-amrnb --enab > le-libopencore-amrwb --enable-libopenjpeg --enable-libopus > --enable-libshine --e > nable-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 --enab > le-libvidstab --enable-libvorbis --enable-libvo-amrwbenc > --enable-libmysofa --en > able-libspeex --enable-libxvid --enable-libaom --enable-libmfx > --enable-ffnvcode > c --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec > --enable-dxva2 - > -enable-avisynth --enable-libopenmpt --enable-amf > libavutil 56. 38.100 / 56. 38.100 > libavcodec 58. 65.103 / 58. 65.103 > libavformat 58. 35.102 / 58. 35.102 > libavdevice 58. 9.103 / 58. 9.103 > libavfilter 7. 71.100 / 7. 71.100 > libswscale 5. 6.100 / 5. 6.100 > libswresample 3. 6.100 / 3. 6.100 > libpostproc 55. 6.100 / 55. 6.100 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4': > Metadata: > major_brand : isom > minor_version : 512 > compatible_brands: isomiso2avc1mp41 > encoder : Lavf58.35.102 > Duration: 00:00:06.02, start: 0.000000, bitrate: 938 kb/s > Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, > 640x480 [ > SAR 1:1 DAR 4:3], 864 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default) > Metadata: > handler_name : VideoHandler > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, > mono, fltp, > 68 kb/s (default) > Metadata: > handler_name : SoundHandler > Guessed Channel Layout for Input Stream #1.0 : mono > Input #1, wav, from 'audio.wav': > Metadata: > encoder : Lavf58.35.102 > Duration: 00:00:10.00, bitrate: 705 kb/s > Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, > mono, s16, > 705 kb/s > Stream mapping: > Stream #0:1 (aac) -> amix:input0 (graph 0) > Stream #1:0 (pcm_s16le) -> amix:input1 (graph 0) > amix (graph 0) -> Stream #0:0 (aac) > Stream #0:0 -> #0:1 (h264 (native) -> h264 (libx264)) > Press [q] to stop, [?] for help > [libx264 @ 00000000029d7540] using SAR=1/1 > [libx264 @ 00000000029d7540] using cpu capabilities: MMX2 SSE2Fast SSSE3 > SSE4.2 > AVX FMA3 BMI2 AVX2 > [libx264 @ 00000000029d7540] profile High, level 3.0, 4:2:0, 8-bit > [libx264 @ 00000000029d7540] 264 - core 159 - H.264/MPEG-4 AVC codec - > Copyleft > 2003-2019 - 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_rang > e=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 > chroma_qp_ > offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 > interla > ced=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 qpma > x=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 : Lavf58.35.102 > Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, > fltp, 69 k > b/s (default) > Metadata: > encoder : Lavc58.65.103 aac > Stream #0:1(und): Video: h264 (libx264) (avc1 / 0x31637661), > yuv420p, 640x48 > 0 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default) > Metadata: > handler_name : VideoHandler > encoder : Lavc58.65.103 libx264 > Side data: > cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A > frame= 111 fps=0.0 q=28.0 size= 256kB time=00:00:02.36 bitrate= > 885.6kbits/ > frame= 150 fps=141 q=-1.0 Lsize= 635kB time=00:00:06.01 bitrate= > 864.7kbits > /s speed=5.66x > video:612kB audio:17kB subtitle:0kB other streams:0kB global headers:0kB > muxing > overhead: 0.982628% > [aac @ 00000000029dbb40] Qavg: 62202.113 > [libx264 @ 00000000029d7540] frame I:1 Avg QP:18.28 size: 9171 > [libx264 @ 00000000029d7540] frame P:47 Avg QP:25.28 size: 5109 > [libx264 @ 00000000029d7540] frame B:102 Avg QP:29.85 size: 3690 > [libx264 @ 00000000029d7540] consecutive B-frames: 2.0% 13.3% 26.0% 58.7% > [libx264 @ 00000000029d7540] mb I I16..4: 45.2% 42.3% 12.5% > [libx264 @ 00000000029d7540] mb P I16..4: 1.5% 5.5% 0.8% P16..4: > 11.1% 5.0 > % 2.8% 0.0% 0.0% skip:73.3% > [libx264 @ 00000000029d7540] mb B I16..4: 0.2% 0.1% 0.5% B16..8: > 14.1% 3.7 > % 0.9% direct: 1.7% skip:78.6% L0:49.5% L1:44.3% BI: 6.2% > [libx264 @ 00000000029d7540] 8x8 transform intra:56.4% inter:25.6% > [libx264 @ 00000000029d7540] coded y,uvDC,uvAC intra: 19.1% 27.7% 26.1% > inter: 4 > .0% 9.1% 7.5% > [libx264 @ 00000000029d7540] i16 v,h,dc,p: 71% 19% 8% 1% > [libx264 @ 00000000029d7540] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 12% 75% > 0% 0% > 0% 0% 0% 0% > [libx264 @ 00000000029d7540] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 22% 33% > 7% 3% > 4% 4% 6% 4% > [libx264 @ 00000000029d7540] i8c dc,h,v,p: 71% 11% 17% 2% > [libx264 @ 00000000029d7540] Weighted P-Frames: Y:0.0% UV:0.0% > [libx264 @ 00000000029d7540] ref P L0: 56.9% 7.7% 22.6% 12.9% > [libx264 @ 00000000029d7540] ref B L0: 74.2% 21.4% 4.4% > [libx264 @ 00000000029d7540] ref B L1: 94.6% 5.4% > [libx264 @ 00000000029d7540] kb/s:834.26 > _______________________________________________ > ffmpeg-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
