Hello Guys! I'm experiensing some real strange (to me) problem. I have to extract portions of a video, let's say, one second.
I use ffmpeg -i origin.mxf -ss 00:00:00.000 -t 00:00:01.000 -c copy -map 0 -y chunk.mxf What I get is this: ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311 configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 Guessed Channel Layout for Input Stream #0.1 : mono Guessed Channel Layout for Input Stream #0.2 : mono Guessed Channel Layout for Input Stream #0.3 : mono Guessed Channel Layout for Input Stream #0.4 : mono Guessed Channel Layout for Input Stream #0.5 : mono Guessed Channel Layout for Input Stream #0.6 : mono Guessed Channel Layout for Input Stream #0.7 : mono Guessed Channel Layout for Input Stream #0.8 : mono Input #0, mxf, from 'origin.mxf': Metadata: uid : 18e7e903-ca5c-4949-b0ec-ef95f190fad0 generation_uid : 746fc1f5-2301-4611-86e5-7cbda614c01d company_name : SONY product_name : XDCAM Transfer product_version : 650 application_platform: SONY MXF Development Kit (MacOS X) product_uid : 060e2b34-0401-0103-0e06-012002410200 modification_date: 2016-06-13 16:48:47 material_package_umid: 0x060A2B340101010501010D231300000078C2CFAA743544349D741AF7D0CA519D timecode : 01:00:00:00 Duration: 00:00:39.14, start: 0.000000, bitrate: 60077 kb/s Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 50000 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 59.94 tbc Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:1: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:2: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:3: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:4: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:5: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:6: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:7: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:8: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Output #0, mxf, to 'chunk.mxf': Metadata: uid : 18e7e903-ca5c-4949-b0ec-ef95f190fad0 generation_uid : 746fc1f5-2301-4611-86e5-7cbda614c01d company_name : SONY product_name : XDCAM Transfer product_version : 650 application_platform: SONY MXF Development Kit (MacOS X) product_uid : 060e2b34-0401-0103-0e06-012002410200 modification_date: 2016-06-13 16:48:47 material_package_umid: 0x060A2B340101010501010D231300000078C2CFAA743544349D741AF7D0CA519D timecode : 01:00:00:00 encoder : Lavf56.40.101 Stream #0:0: Video: mpeg2video, yuv422p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 50000 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:5: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:6: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:7: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream #0:8: Audio: pcm_s24le, 48000 Hz, mono (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D231300000094EB3E6DAE4145DCB308BC1B1A21FB56 Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Stream #0:2 -> #0:2 (copy) Stream #0:3 -> #0:3 (copy) Stream #0:4 -> #0:4 (copy) Stream #0:5 -> #0:5 (copy) Stream #0:6 -> #0:6 (copy) Stream #0:7 -> #0:7 (copy) Stream #0:8 -> #0:8 (copy) Press [q] to stop, [?] for help [mxf @ 0x1c07620] -d10_channelcount requires MXF D-10 and will be ignored Last message repeated 7 times [mxf @ 0x1c07620] missing frames frame= 16 fps=0.0 q=-1.0 Lsize= 3922kB time=00:00:01.00 bitrate=32097.4kbits/s video:3291kB audio:1126kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Seems ok lookin at duration, but the frame= 16 is really strange since the video is at 29.97fps... When checking the chunk.mxf ffprobe version 2.8.6-1ubuntu2 Copyright (c) 2007-2016 the FFmpeg developers built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311 configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv libavutil 54. 31.100 / 54. 31.100 libavcodec 56. 60.100 / 56. 60.100 libavformat 56. 40.101 / 56. 40.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 40.101 / 5. 40.101 libavresample 2. 1. 0 / 2. 1. 0 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 2.101 / 1. 2.101 libpostproc 53. 3.100 / 53. 3.100 [mxf @ 0x2396ac0] index entry 15 + TemporalOffset 1 = 16, which is out of bounds Input #0, mxf, from 'chunk.mxf': Metadata: uid : adab4424-2f25-4dc7-92ff-29bd000c0000 generation_uid : adab4424-2f25-4dc7-92ff-29bd000c0001 company_name : FFmpeg product_name : OP1a Muxer product_version : 56.40.101 product_uid : adab4424-2f25-4dc7-92ff-29bd000c0002 modification_date: 0-01-01 00:00:00 material_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599700 timecode : 01:00:00:00 Duration: 00:00:00.53, start: 0.000000, bitrate: 60181 kb/s Stream #0:0: Video: mpeg2video (4:2:2), yuv422p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 50000 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 59.94 tbc Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:1: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:2: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:3: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:4: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:5: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:6: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:7: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 Stream #0:8: Audio: pcm_s24le, 48000 Hz, 1 channels, s32 (24 bit), 1152 kb/s Metadata: file_package_umid: 0x060A2B340101010501010D001397071A529471345997071A0052947134599701 The video has ony 0.53s, or 16 frames more or less... I tried setting the fps by hand, using -to instead of -t but nothing changes... Does someone has some idea about it? What am I doing wrong? Thanks and Best Regards _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".