[FFmpeg-user] Help, cannot connect to my webcam (message : Could not RenderStream to connect pins, I/O error)

[김찬]

Yes, I could use the webcam to record the screen containing the webcam video.(using another solution, which could probably use ffmpeg inside).
Chan Kim

-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Roger Pack
Sent: Tuesday, May 10, 2016 10:57 PM
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Subject: Re: [FFmpeg-user] Help, cannot connect to my webcam (message : Could not RenderStream to connect pins, I/O error)

can other programs use your lifecam?

On 5/10/16, 김찬 <ckim at etri.re.kr> wrote:
> Thanks Carl,
> Here is the output. I gave the recording command (ffmpeg -f dshow -i 
> video="..." test.mp4) while I was streaming the web cam video using 
> LifeCam player.(displaying the camera on my notebook).
>
> D:\ffmpeg-20160508-git-38eeb85-win64-static\bin
>>ffmpeg -list_devices true -f dshow -i dummy
> ffmpeg version N-79883-g38eeb85 Copyright (c) 2000-2016 the FFmpeg 
> developers
>   built with gcc 5.3.0 (GCC)
>   configuration: --enable-gpl --enable-version3 --disable-w32threads 
> --enable-avisynth --enable-bzlib --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-libmodplug --enable-libmfx 
> --enable-libmp3lame --enable-libopencore-amrnb 
> --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
> --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. 24.100 / 55. 24.100
>   libavcodec     57. 40.100 / 57. 40.100
>   libavformat    57. 36.100 / 57. 36.100
>   libavdevice    57.  0.101 / 57.  0.101
>   libavfilter     6. 45.100 /  6. 45.100
>   libswscale      4.  1.100 /  4.  1.100
>   libswresample   2.  0.101 /  2.  0.101
>   libpostproc    54.  0.100 / 54.  0.100
> [dshow @ 00000000004ca940] DirectShow video devices (some may be both 
> video and audio devices) [dshow @ 00000000004ca940]  "Microsoft 
> LifeCam VX-6000"
> [dshow @ 00000000004ca940]     Alternative name
> "@device_pnp_\\?\usb#vid_045e&pid_00f4&mi_00#7&1628b7e9&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
> [dshow @ 00000000004ca940]  "Webcam SC-13HDL11624N"
> [dshow @ 00000000004ca940]     Alternative name
> "@device_pnp_\\?\usb#vid_2232&pid_1024&mi_00#7&2dcaa785&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
> [dshow @ 00000000004ca940] DirectShow audio devices [dshow @ 
> 00000000004ca940]  "마이크(2- Microsoft LifeCam VX-600"
> [dshow @ 00000000004ca940]     Alternative name
> "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\마이크(2- Microsoft 
> LifeCam VX-600"
> [dshow @ 00000000004ca940]  "마이크(Realtek High Definition Aud"
> [dshow @ 00000000004ca940]     Alternative name
> "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\마이크(Realtek High 
> Definition Aud"
> dummy: Immediate exit requested
>
> D:\ffmpeg-20160508-git-38eeb85-win64-static\bin
>>ffmpeg -f dshow -i video="Microsoft LifeCam VX-6000" test.mp4
> ffmpeg version N-79883-g38eeb85 Copyright (c) 2000-2016 the FFmpeg 
> developers
>   built with gcc 5.3.0 (GCC)
>   configuration: --enable-gpl --enable-version3 --disable-w32threads 
> --enable-avisynth --enable-bzlib --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-libmodplug --enable-libmfx 
> --enable-libmp3lame --enable-libopencore-amrnb 
> --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus 
> --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. 24.100 / 55. 24.100
>   libavcodec     57. 40.100 / 57. 40.100
>   libavformat    57. 36.100 / 57. 36.100
>   libavdevice    57.  0.101 / 57.  0.101
>   libavfilter     6. 45.100 /  6. 45.100
>   libswscale      4.  1.100 /  4.  1.100
>   libswresample   2.  0.101 /  2.  0.101
>   libpostproc    54.  0.100 / 54.  0.100
> [dshow @ 000000000041a9a0] Could not RenderStream to connect pins 
> video=Microsoft LifeCam VX-6000: I/O error
>
> D:\ffmpeg-20160508-git-38eeb85-win64-static\bin
>
> -----Original Message-----
> From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of 
> Carl Eugen Hoyos
> Sent: Tuesday, May 10, 2016 3:00 AM
> To: ffmpeg-user at ffmpeg.org
> Subject: Re: [FFmpeg-user] Help, cannot connect to my webcam (message :
> Could not RenderStream to connect pins, I/O error)
>
> 김찬 <ckim <at> etri.re.kr> writes:
>
>> to see the web cam is recognized by ffmpeg. (It read "Microsoft 
>> LifeCam VX-6000")
>>
>> So I endtered to record the screen,
>>
>> > ffmpeg -f dshow -i video="Microsoft LifeCam VX-6000" test.mp4
>
> Please provide your failing command line together with the complete, 
> uncut console output, use copy-paste, do not attach screenshots.
>
> Carl Eugen
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