Re: [FFmpeg-user] dshow questions
Hi, > Is -vcodec in this case an undocumented option of the dshow input device? I > ask because it's written before -i. > Or is it an option for the output, and could (or should?) be written before > the output file? I think it's not documented because it's deprecated, ultimately it's equivalent to codec:v, which is listed as input/output option. > Why is each line listed twice? Might there be a difference between the lines, > but FFmpeg can't show what the difference is? That is weird, maybe it is listing them once for device then for the pin? Or it tries to list video and audio properties but the audio falls back to the video device? Regards, Ted Park ___ 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".
Re: [FFmpeg-user] dshow questions
Am 08.08.2020 um 13:41 schrieb Moritz Barsnick:
On Sat, Aug 08, 2020 at 11:23:28 +0200, Michael Koch wrote:
ffmpeg -f dshow -video_size 1280x720 -framerate 15 -vcodec mjpeg -i
video="Integrated Camera" out.avi
Is -vcodec in this case an undocumented option of the dshow input
device? I ask because it's written before -i.
Or is it an option for the output, and could (or should?) be written
before the output file?
As other documentation indicates, "-c" ("-codec", -"vcodec") can be
either an input or an output option. As an input option, it either
tells ffmpeg which codec an input has, or in this case, it also tells
the input device which codec to choose (i.e. emit).
Thanks for your answer, that makes sense.
Question 2:
I have this HDMI to USB converter (which is working very good, by the way):
https://www.ebay.de/itm/1080P-HDMI-Videoaufnahme-Video-Capture-Card-Grabber-USB2-0-Recorder-Adapter/293641909414
[...]
[dshow @ 00374800] pixel_format=yuyv422 min s=640x480 fps=5 max
s=640x480 fps=30
[dshow @ 00374800] pixel_format=yuyv422 min s=640x480 fps=5 max
s=640x480 fps=30
video=USB Video: Immediate exit requested
Why is each line listed twice? Might there be a difference between the
lines, but FFmpeg can't show what the difference is?
I can't help you with this, sorry.
I see the same behaviour also with the built-in webcam in my notebook.
All lines are listed twice.
Michael
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Re: [FFmpeg-user] dshow questions
On Sat, Aug 08, 2020 at 11:23:28 +0200, Michael Koch wrote:
> ffmpeg -f dshow -video_size 1280x720 -framerate 15 -vcodec mjpeg -i
> video="Integrated Camera" out.avi
>
> Is -vcodec in this case an undocumented option of the dshow input
> device? I ask because it's written before -i.
> Or is it an option for the output, and could (or should?) be written
> before the output file?
As other documentation indicates, "-c" ("-codec", -"vcodec") can be
either an input or an output option. As an input option, it either
tells ffmpeg which codec an input has, or in this case, it also tells
the input device which codec to choose (i.e. emit).
> Question 2:
> I have this HDMI to USB converter (which is working very good, by the way):
> https://www.ebay.de/itm/1080P-HDMI-Videoaufnahme-Video-Capture-Card-Grabber-USB2-0-Recorder-Adapter/293641909414
[...]
> [dshow @ 00374800] pixel_format=yuyv422 min s=640x480 fps=5 max
> s=640x480 fps=30
> [dshow @ 00374800] pixel_format=yuyv422 min s=640x480 fps=5 max
> s=640x480 fps=30
> video=USB Video: Immediate exit requested
>
> Why is each line listed twice? Might there be a difference between the
> lines, but FFmpeg can't show what the difference is?
I can't help you with this, sorry.
Cheers,
Moritz
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[FFmpeg-user] dshow questions
Hi, I have two questions about the dshow input device. Question 1: On the wiki page https://trac.ffmpeg.org/wiki/DirectShow can be found this example: ffmpeg -f dshow -video_size 1280x720 -framerate 15 -vcodec mjpeg -i video="Integrated Camera" out.avi Is -vcodec in this case an undocumented option of the dshow input device? I ask because it's written before -i. Or is it an option for the output, and could (or should?) be written before the output file? Question 2: I have this HDMI to USB converter (which is working very good, by the way): https://www.ebay.de/itm/1080P-HDMI-Videoaufnahme-Video-Capture-Card-Grabber-USB2-0-Recorder-Adapter/293641909414 When I list the options with this command line ffmpeg -list_options 1 -f dshow -i video="USB Video" this is the output: C:\Users\mKoch\Desktop>c:\ffmpeg\ffmpeg -list_options 1 -f dshow -i video="USB V ideo" ffmpeg version git-2020-08-02-b48397e Copyright (c) 2000-2020 the FFmpeg develop ers built with gcc 10.2.1 (GCC) 20200726 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-libsrt --enable-libtheora --enable-lib twolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 -- enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --e nable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo -amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --enable-librav1e --disable-w32threads --enable-libmfx --enable- ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --en able-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf libavutil 56. 57.100 / 56. 57.100 libavcodec 58. 99.100 / 58. 99.100 libavformat 58. 49.100 / 58. 49.100 libavdevice 58. 11.101 / 58. 11.101 libavfilter 7. 87.100 / 7. 87.100 libswscale 5. 8.100 / 5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 [dshow @ 00374800] DirectShow video device options (from video devices) [dshow @ 00374800] Pin "Capture" (alternative pin name "0") [dshow @ 00374800] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1920x1080 fps=5 max s=1920x1080 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1600x1200 fps=5 max s=1600x1200 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1600x1200 fps=5 max s=1600x1200 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1360x768 fps=5 max s=1360x768 f ps=30 [dshow @ 00374800] vcodec=mjpeg min s=1360x768 fps=5 max s=1360x768 f ps=30 [dshow @ 00374800] vcodec=mjpeg min s=1280x1024 fps=5 max s=1280x1024 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1280x1024 fps=5 max s=1280x1024 fps=30 [dshow @ 00374800] vcodec=mjpeg min s=1280x960 fps=5 max s=1280x960 f ps=50 [dshow @ 00374800] vcodec=mjpeg min s=1280x960 fps=5 max s=1280x960 f ps=50 [dshow @ 00374800] vcodec=mjpeg min s=1280x720 fps=10 max s=1280x720 fps=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=1280x720 fps=10 max s=1280x720 fps=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=1024x768 fps=10 max s=1024x768 fps=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=1024x768 fps=10 max s=1024x768 fps=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=800x600 fps=10 max s=800x600 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=800x600 fps=10 max s=800x600 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=720x576 fps=10 max s=720x576 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=720x576 fps=10 max s=720x576 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=720x480 fps=10 max s=720x480 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=720x480 fps=10 max s=720x480 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=640x480 fps=10 max s=640x480 fp s=60.0002 [dshow @ 00374800] vcodec=mjpeg min s=640x480 fps=10 max s=640x480 fp s=60.0002 [dshow @ 00374800] pixel_format=yuyv422 min s=1280x720 fps=10 max s=1 280x720 fps=10 [dshow @ 00374800] pixel_format=yuyv422 min s=1280x720 fps=10 max s=1 280x720 fps=10 [dshow @ 00374800] pixel_format=yuyv422 min s=1920x1080 fps=5 max s=1 920x1080 fps=5 [dshow @ 00374800] pixel_format=yuyv422 min s=1920x1080 fps=5 max s=1 920x1080 fps=5 [dshow @ 00374800] pixel_format=yuyv422 min s=1600x1200 fps=5 max s=1 600x1200 fps=5 [dshow @
