Hi ffmpeg-users, I was using a behavior in ffmpeg where SIGPIPE would terminate ffmpeg (while permitting it to cleanly end its muxing). This can be demonstrated in ffmpeg 5.1.3 with this command of piping ffmpeg into ffplay. When I close the ffplay window, the ffmpeg receives a SIGPIPE and stop.
ffmpeg -f lavfi -i testsrc -f matroska test_ffmpeg5.mov -f nut - | ffplay - ffmpeg version 5.1.3ffplay version 5.1.3 Copyright (c) 2003-2022 the FFmpeg developers Copyright (c) 2000-2022 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.30) built with Apple clang version 13.0.0 (clang-1300.0.29.30) configuration: --prefix='/usr/local/Cellar/ffmpeg@5/5.1.3' --datadir='/usr/local/Cellar/ffmpeg@5/5.1.3/share/ffmpeg' --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox configuration: --prefix='/usr/local/Cellar/ffmpeg@5/5.1.3' --datadir='/usr/local/Cellar/ffmpeg@5/5.1.3/share/ffmpeg' --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox libavutil 57. 28.100 / 57. 28.100 libavutil 57. 28.100 / 57. 28.100 libavcodec 59. 37.100 / 59. 37.100 libavcodec 59. 37.100 / 59. 37.100 libavformat 59. 27.100 / 59. 27.100 libavformat 59. 27.100 / 59. 27.100 libavdevice 59. 7.100 / 59. 7.100 libavdevice 59. 7.100 / 59. 7.100 libavfilter 8. 44.100 / 8. 44.100 libavfilter 8. 44.100 / 8. 44.100 libswscale 6. 7.100 / 6. 7.100 libswscale 6. 7.100 / 6. 7.100 libswresample 4. 7.100 / 4. 7.100 libswresample 4. 7.100 / 4. 7.100 libpostproc 56. 6.100 / 56. 6.100 libpostproc 56. 6.100 / 56. 6.100 Input #0, lavfi, from 'testsrc': Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn Stream mapping: Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264)) Stream #0:0 -> #1:0 (rawvideo (native) -> mpeg4 (native)) Press [q] to stop, [?] for help [libx264 @ 0x7f9070417300] using SAR=1/1 [libx264 @ 0x7f9070417300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264 @ 0x7f9070417300] profile High 4:4:4 Predictive, level 1.3, 4:4:4, 8-bit [libx264 @ 0x7f9070417300] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=7 lookahead_threads=1 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, matroska, to 'test_ffmpeg5.mov': Metadata: encoder : Lavf59.27.100 Stream #0:0: Video: h264 (H264 / 0x34363248), yuv444p(tv, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 25 fps, 1k tbn Metadata: encoder : Lavc59.37.100 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Output #1, nut, to 'pipe:': Metadata: encoder : Lavf59.27.100 Stream #1:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p(tv, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 51200 tbn Metadata: encoder : Lavc59.37.100 mpeg4 Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A Input #0, nut, from 'pipe:':4.7 size= 1kB time=00:00:00.00 bitrate=230000.0kbits/s speed=0.455x Metadata: encoder : Lavf59.27.100 Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 51200 tbn Metadata: encoder : Lavc59.37.100 mpeg4 1.22 M-V: 0.001 fd= 0 aq= 0KB vq= 39KB sq= 0B f=0/0 trate= 1.4kbits/s speed=3.81x av_interleaved_write_frame(): Broken pipe Error writing trailer of pipe:: Broken pipe frame= 121 fps= 60 q=-1.0 Lq=1.6 size= 24kB time=00:00:04.80 bitrate= 41.2kbits/s speed=2.38x video:219kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Error closing file pipe:: Broken pipe [libx264 @ 0x7f9070417300] frame I:1 Avg QP:19.18 size: 2974 [libx264 @ 0x7f9070417300] frame P:33 Avg QP:14.59 size: 461 [libx264 @ 0x7f9070417300] frame B:87 Avg QP:14.07 size: 51 [libx264 @ 0x7f9070417300] consecutive B-frames: 1.7% 0.0% 22.3% 76.0% [libx264 @ 0x7f9070417300] mb I I16..4: 30.0% 43.0% 27.0% [libx264 @ 0x7f9070417300] mb P I16..4: 1.7% 1.3% 0.8% P16..4: 7.3% 3.8% 2.7% 0.0% 0.0% skip:82.4% [libx264 @ 0x7f9070417300] mb B I16..4: 0.2% 0.2% 0.0% B16..8: 4.0% 0.1% 0.0% direct: 0.1% skip:95.5% L0:53.0% L1:42.1% BI: 4.9% [libx264 @ 0x7f9070417300] 8x8 transform intra:39.2% inter:36.5% [libx264 @ 0x7f9070417300] coded y,u,v intra: 10.8% 11.2% 10.0% inter: 0.7% 0.8% 0.7% [libx264 @ 0x7f9070417300] i16 v,h,dc,p: 55% 32% 1% 13% [libx264 @ 0x7f9070417300] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 72% 4% 24% 0% 0% 0% 0% 0% 0% [libx264 @ 0x7f9070417300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 46% 14% 1% 1% 1% 0% 1% 0% [libx264 @ 0x7f9070417300] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0x7f9070417300] ref P L0: 68.2% 7.7% 21.1% 3.0% [libx264 @ 0x7f9070417300] ref B L0: 59.4% 36.4% 4.2% [libx264 @ 0x7f9070417300] ref B L1: 97.3% 2.7% [libx264 @ 0x7f9070417300] kb/s:37.43 With ffmpeg 6, the behavior is different. When I close the ffplay window, the ffmpeg does not stop. I’ve tried adding -xerror but that doesn’t help get the 5.1.3 behavior. With ffmpeg 6 is there a way to have ffmpeg stop nicely when receiving SIGPIPE (like ffmpeg 5.1.3 could do)? ffmpeg -f lavfi -i testsrc -f matroska test_ffmpeg6.mov -f nut - | ffplay - ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.30) configuration: --prefix=/usr/local/Cellar/ffmpeg/6.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox libavutil 58. 2.100 / 58. 2.100 libavcodec 60. 3.100 / 60. 3.100 libavformat 60. 3.100 / 60. 3.100 libavdevice 60. 1.100 / 60. 1.100 libavfilter 9. 3.100 / 9. 3.100 libswscale 7. 1.100 / 7. 1.100 libswresample 4. 10.100 / 4. 10.100 libpostproc 57. 1.100 / 57. 1.100 Input #0, lavfi, from 'testsrc': Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: wrapped_avframe, rgb24, 320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 25 tbn Stream mapping: Stream #0:0 -> #0:0 (wrapped_avframe (native) -> h264 (libx264)) Stream #0:0 -> #1:0 (wrapped_avframe (native) -> mpeg4 (native)) Press [q] to stop, [?] for help ffplay version 6.0 Copyright (c) 2003-2023 the FFmpeg developers built with Apple clang version 13.0.0 (clang-1300.0.29.30) configuration: --prefix=/usr/local/Cellar/ffmpeg/6.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox libavutil 58. 2.100 / 58. 2.100 libavcodec 60. 3.100 / 60. 3.100 libavformat 60. 3.100 / 60. 3.100 libavdevice 60. 1.100 / 60. 1.100 libavfilter 9. 3.100 / 9. 3.100 libswscale 7. 1.100 / 7. 1.100 libswresample 4. 10.100 / 4. 10.100 libpostproc 57. 1.100 / 57. 1.100 [libx264 @ 0x7fdbbaa0a340] using SAR=1/1 [libx264 @ 0x7fdbbaa0a340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 [libx264 @ 0x7fdbbaa0a340] profile High 4:4:4 Predictive, level 1.3, 4:4:4, 8-bit [libx264 @ 0x7fdbbaa0a340] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - 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=7 lookahead_threads=1 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, matroska, to 'test_ffmpeg6.mov': Metadata: encoder : Lavf60.3.100 Stream #0:0: Video: h264 (H264 / 0x34363248), yuv444p(tv, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 25 fps, 1k tbn Metadata: encoder : Lavc60.3.100 libx264 Side data: cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A Output #1, nut, to 'pipe:': Metadata: encoder : Lavf60.3.100 Stream #1:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p(tv, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 51200 tbn Metadata: encoder : Lavc60.3.100 mpeg4 Side data: cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A Input #0, nut, from 'fd:':q=4.7 size= 0kB time=00:00:00.00 bitrate=N/A speed=N/A Metadata: encoder : Lavf60.3.100 Duration: N/A, start: 0.000000, bitrate: N/A Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 51200 tbn Metadata: encoder : Lavc60.3.100 mpeg4 1.30 M-V: 0.001 fd= 0 aq= 0KB vq= 40KB sq= 0B f=0/0 trate= 1.1kbits/s speed=3.13x av_interleaved_write_frame(): Broken pipe [out#1/nut @ 0x7fdbbaa0b000] Error muxing a packet [out#1/nut @ 0x7fdbbaa0b000] Error writing trailer: Broken pipe16 bitrate= 20.5kbits/s speed=13.5x frame= 2715 fps=339 q=-1.0 Lq=2.0 size= 492kB time=00:01:48.48 bitrate= 37.2kbits/s speed=13.5x video:671kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown [libx264 @ 0x7fdbbaa0a340] frame I:11 Avg QP:16.89 size: 3393 [libx264 @ 0x7fdbbaa0a340] frame P:733 Avg QP:14.00 size: 472 [libx264 @ 0x7fdbbaa0a340] frame B:1971 Avg QP:14.24 size: 52 [libx264 @ 0x7fdbbaa0a340] consecutive B-frames: 1.0% 0.0% 19.6% 79.4% [libx264 @ 0x7fdbbaa0a340] mb I I16..4: 31.1% 38.6% 30.3% [libx264 @ 0x7fdbbaa0a340] mb P I16..4: 1.8% 1.6% 0.8% P16..4: 7.2% 3.8% 2.6% 0.0% 0.0% skip:82.2% [libx264 @ 0x7fdbbaa0a340] mb B I16..4: 0.2% 0.1% 0.0% B16..8: 4.3% 0.1% 0.0% direct: 0.1% skip:95.2% L0:52.9% L1:42.7% BI: 4.4% [libx264 @ 0x7fdbbaa0a340] 8x8 transform intra:38.7% inter:36.4% [libx264 @ 0x7fdbbaa0a340] coded y,u,v intra: 10.1% 10.7% 8.7% inter: 0.7% 0.8% 0.7% [libx264 @ 0x7fdbbaa0a340] i16 v,h,dc,p: 49% 32% 2% 17% [libx264 @ 0x7fdbbaa0a340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 64% 5% 31% 0% 0% 0% 0% 0% 0% [libx264 @ 0x7fdbbaa0a340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 54% 11% 1% 1% 1% 0% 1% 0% [libx264 @ 0x7fdbbaa0a340] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0x7fdbbaa0a340] ref P L0: 68.5% 7.2% 21.0% 3.3% [libx264 @ 0x7fdbbaa0a340] ref B L0: 58.4% 38.6% 3.1% [libx264 @ 0x7fdbbaa0a340] ref B L1: 97.5% 2.5% [libx264 @ 0x7fdbbaa0a340] kb/s:35.73 Exiting normally, received signal 2. Kind Regards, Dave Rice _______________________________________________ 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".
