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October 2021

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#5922(avdevice:new): Can't access pin through DirectShow input
by FFmpeg 05 Oct '21

05 Oct '21

#5922: Can't access pin through DirectShow input -------------------------------------+------------------------------------- Reporter: | Type: defect ChocolateArmpits | Priority: normal Status: new | Version: git- Component: avdevice | master Keywords: dshow | Blocked By: directshow 1394 dv interleaved | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- I'm trying to capture a dv stream using a firewire capture card. The Directshow device filter has two pins. First one is only a video stream (DV Vid Out), second is an interleaved video/audio (DV A/V Out). Using ffmpeg I can access only the first pin, pointing to the second returns an error. Using GraphEdit I successfully accesed the second stream and played it back along with the audio. Had no problems in VLC either. This doesn't seem like a Directshow error or that of my capture card. Running 64bit compilation from Zeranoe on Windows 7. DEVICES: {{{ ffmpeg -list_devices true -f dshow -i dummy ffmpeg version 3.1.4 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisyn th --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable- libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable- libgme --enable-libgsm --enable-libilbc --enable-libmodp lug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore- amrwb --enable-libopenh264 --enable-libopenjpeg --enable-l ibopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable -libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp -- enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 48.101 / 57. 48.101 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 [dshow @ 000000000033a400] DirectShow video devices (some may be both video and audio devices) [dshow @ 000000000033a400] "Microsoft DV Camera and VCR" [dshow @ 000000000033a400] Alternative name "@device_pnp_\\?\avc#sony &dv-vcr&typ_4&id_0&dv#22715d0201460008#{65e8773d-8f56-11d 0-a3b9-00a0c9223196}\global" [dshow @ 000000000033a400] DirectShow audio devices [dshow @ 000000000033a400] "Stereo Mix (VIA High Definition" [dshow @ 000000000033a400] Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\Stereo Mix (VIA High Definition " dummy: Immediate exit requested }}} OPTIONS FOR THE CAPTURE DEVICE: {{{ ffmpeg -loglevel trace -f dshow -list_options true -i video="Microsoft DV Camera and VCR" ffmpeg version 3.1.4 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisyn th --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable- libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable- libgme --enable-libgsm --enable-libilbc --enable-libmodp lug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore- amrwb --enable-libopenh264 --enable-libopenjpeg --enable-l ibopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable -libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp -- enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 48.101 / 57. 48.101 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 Splitting the commandline. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'trace'. Reading option '-f' ... matched as option 'f' (force format) with argument 'dshow'. Reading option '-list_options' ... matched as AVOption 'list_options' with argument 'true'. Reading option '-i' ... matched as input file with argument 'video=Microsoft DV Camera and VCR'. Finished splitting the commandline. Parsing a group of options: global . Applying option loglevel (set logging level) with argument trace. Successfully parsed a group of options. Parsing a group of options: input file video=Microsoft DV Camera and VCR. Applying option f (force format) with argument dshow. Successfully parsed a group of options. Opening an input file: video=Microsoft DV Camera and VCR. [dshow @ 000000000033a580] DirectShow video device options (from video devices) [dshow @ 000000000033a580] Pin "DV Vid Out" (alternative pin name "0") [dshow @ 000000000033a580] vcodec=dvvideo min s=720x480 fps=29.97 max s=720x480 fps=29.97 [dshow @ 000000000033a580] vcodec=dvvideo min s=720x576 fps=25 max s=720x576 fps=25 [dshow @ 000000000033a580] Pin "DV A/V Out" (alternative pin name "1") [dshow @ 000000000033a580] Selecting pin DV Vid Out on video video=Microsoft DV Camera and VCR: Immediate exit requested }}} ACCESS ERROR: {{{ ffplay -loglevel trace -video_pin_name 1 -f dshow -i video="Microsoft DV Camera and VCR" ffplay version 3.1.4 Copyright (c) 2003-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisyn th --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable- libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable- libgme --enable-libgsm --enable-libilbc --enable-libmodp lug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore- amrwb --enable-libopenh264 --enable-libopenjpeg --enable-l ibopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable -libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp -- enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 48.101 / 57. 48.101 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 [dshow @ 000000000055f5a0] skipping pin "DV Vid Out" ("0") != requested "1" [dshow @ 000000000055f5a0] Could not find output pin from video capture device. video=Microsoft DV Camera and VCR: I/O error 0KB sq= 0B f=0/0 }}} VERSION: {{{ ffmpeg -version ffmpeg version 3.1.4 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 5.4.0 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-li bbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable- libgme --enable-libgsm --enable-libilbc --enable-libmodplu g --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore- amrwb --enable-libopenh264 --enable-libopenjpeg --enable-lib opus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-l ibtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --en able-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable- libzimg --enable-lzma --enable-decklink --enable-zlib libavutil 55. 28.100 / 55. 28.100 libavcodec 57. 48.101 / 57. 48.101 libavformat 57. 41.100 / 57. 41.100 libavdevice 57. 0.101 / 57. 0.101 libavfilter 6. 47.100 / 6. 47.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/5922> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker

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