Answers.Body: <p>Using <code>embedded</code> (or omitting <code>-audio_input</code>) is the intended way to get the audio of HDMI or SDI signals.</p>
  
  <p>Please make sure that there is a 2ch-stereo audio signal on HDMI. If it is 5.1 or 7.1 you might have to use <code>-channels 8</code> in the commandline before the <code>-i</code>.</p>
  
  <p>Note: please pay attention to the <code>pix_fmt</code> warning. Leave that option out of your commandline.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-02-21T21:58:05.117Z
Answers.LastActivityDate: 2017-02-21T21:58:05.117Z
Answers.UserDisplayName: Roy D'atze
Body: <p>I'm using an Intensity Pro 4K to capture with <code>ffmpeg</code> via the <code>decklink</code> commands.</p>
  
  <p>According to <a href="https://www.ffmpeg.org/ffmpeg-devices.html#decklink" rel="nofollow noreferrer">the documentation</a>:</p>
  
  <blockquote>
    <p><strong>video_input</strong></p>
    
    <p>Sets the video input source. Must be ‘unset’, ‘sdi’, ‘hdmi’, ‘optical_sdi’, ‘component’, ‘composite’ or ‘s_video’. Defaults to
    ‘unset’.</p>
    
    <p><strong>audio_input</strong></p>
    
    <p>Sets the audio input source. Must be ‘unset’, ‘embedded’, ‘aes_ebu’, ‘analog’, ‘analog_xlr’, ‘analog_rca’ or ‘microphone’.
    Defaults to ‘unset’.</p>
  </blockquote>
  
  <p>So I set <code>-video_input hdmi</code>, which guarantees I will get the video via HDMI even if the Blackmagic driver is set to something else (e.g., component, which for some reason every time I reboot it gets reset to component).</p>
  
  <p>But, while I get video, I don't get audio.  I tried setting <code>-audio_input</code> to <code>embedded</code> (no effect) <code>aes_ebu</code>, and <code>microphone</code> (not supported by device error).</p>
  
  <p>So, I still have to go to the Blackmagic video drivers and switch the input signal to HDMI.</p>
  
  <p>Is there a way to specify the hdmi audio feed together with the hdmi video feed on the ffmpeg command line?</p>
  
  <p><strong>Reference</strong></p>
  
  <p>Full command I am using:</p>
  
  <pre><code>ffmpeg -rtbufsize 1500M -f decklink -video_input hdmi -i "Intensity Pro 4K@20" -pix_fmt yuv420p -c:a copy -c:v v210 abc.mov
  </code></pre>
  
  <p><code>list_formats</code> output:</p>
  
  <pre><code>E:\&gt;ffmpeg -f decklink -list_formats 1 -i "Intensity Pro 4K"
  ffmpeg version 3.2 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-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --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. 34.100 / 55. 34.100
    libavcodec     57. 64.100 / 57. 64.100
    libavformat    57. 56.100 / 57. 56.100
    libavdevice    57.  1.100 / 57.  1.100
    libavfilter     6. 65.100 /  6. 65.100
    libswscale      4.  2.100 /  4.  2.100
    libswresample   2.  3.100 /  2.  3.100
    libpostproc    54.  1.100 / 54.  1.100
  [decklink @ 0000000000f66460] Supported formats for 'Intensity Pro 4K':
  [decklink @ 0000000000f66460]   1       720x486 at 30000/1001 fps (interlaced, lower field first)
  [decklink @ 0000000000f66460]   2       720x576 at 25000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   3       1920x1080 at 24000/1001 fps
  [decklink @ 0000000000f66460]   4       1920x1080 at 24000/1000 fps
  [decklink @ 0000000000f66460]   5       1920x1080 at 25000/1000 fps
  [decklink @ 0000000000f66460]   6       1920x1080 at 30000/1001 fps
  [decklink @ 0000000000f66460]   7       1920x1080 at 30000/1000 fps
  [decklink @ 0000000000f66460]   8       1920x1080 at 25000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   9       1920x1080 at 30000/1001 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   10      1920x1080 at 30000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   11      1920x1080 at 50000/1000 fps
  [decklink @ 0000000000f66460]   12      1920x1080 at 60000/1001 fps
  [decklink @ 0000000000f66460]   13      1920x1080 at 60000/1000 fps
  [decklink @ 0000000000f66460]   14      1280x720 at 50000/1000 fps
  [decklink @ 0000000000f66460]   15      1280x720 at 60000/1001 fps
  [decklink @ 0000000000f66460]   16      1280x720 at 60000/1000 fps
  [decklink @ 0000000000f66460]   17      3840x2160 at 24000/1001 fps
  [decklink @ 0000000000f66460]   18      3840x2160 at 24000/1000 fps
  [decklink @ 0000000000f66460]   19      3840x2160 at 25000/1000 fps
  [decklink @ 0000000000f66460]   20      3840x2160 at 30000/1001 fps
  [decklink @ 0000000000f66460]   21      3840x2160 at 30000/1000 fps
  Intensity Pro 4K: Immediate exit requested
  </code></pre>
  
  <p>Output of <code>E:\&gt;ffmpeg -rtbufsize 1500M -f decklink -video_input hdmi -audio_input embedded -i "Intensity Pro 4K@20" -pix_fmt yuv420p -c:a copy -c:v v210 abcde.mov</code></p>
  
  <pre><code>ffmpeg version 3.2 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-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --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. 34.100 / 55. 34.100
    libavcodec     57. 64.100 / 57. 64.100
    libavformat    57. 56.100 / 57. 56.100
    libavdevice    57.  1.100 / 57.  1.100
    libavfilter     6. 65.100 /  6. 65.100
    libswscale      4.  2.100 /  4.  2.100
    libswresample   2.  3.100 /  2.  3.100
    libpostproc    54.  1.100 / 54.  1.100
  [decklink @ 0000000002872cc0] Found Decklink mode 3840 x 2160 with rate 29.97
  [decklink @ 0000000002872cc0] Frame received (#1) - Input returned - Frames dropped 1
  Guessed Channel Layout for Input Stream #0.0 : stereo
  Input #0, decklink, from 'Intensity Pro 4K@20':
    Duration: N/A, start: 0.000000, bitrate: 3978870 kb/s
      Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
      Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422, 3840x2160, 3977334 kb/s, 29.97 tbr, 1000k tbn, 1000k tbc
  Incompatible pixel format 'yuv420p' for codec 'v210', auto-selecting format 'yuv422p'
  Output #0, mov, to 'abcde.mov':
    Metadata:
      encoder         : Lavf57.56.100
      Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p, 3840x2160, q=2-31, 200 kb/s, 29.97 fps, 30k tbn, 29.97 tbc
      Metadata:
        encoder         : Lavc57.64.100 v210
      Stream #0:1: Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, 1536 kb/s
  Stream mapping:
    Stream #0:1 -&gt; #0:0 (rawvideo (native) -&gt; v210 (native))
    Stream #0:0 -&gt; #0:1 (copy)
  Press [q] to stop, [?] for help
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T10:54:57.643Z
Comments.Text: What's the full command you're using? And does list_formats show any audio selection?
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:04:07.863Z
Comments.Text: @Mulvya Updated my question.
Comments.UserDisplayName: Patrick Kenny
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:07:13.140Z
Comments.Text: With the audio option set to embedded, does ffmpeg show any input audio stream?
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:10:45.827Z
Comments.Text: @Mulvya When I enter the command `E:\>ffmpeg -f decklink -video_input hdmi -audio_input embedded -list_formats 1 -i "Intensity Pro 4K"`, the output is the same as when I do not specify `-audio_input`.
Comments.UserDisplayName: Patrick Kenny
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:21:24.353Z
Comments.Text: Of course, that's because you're listing formats. You need to add it to the capture command and check.
Comments.UserDisplayName: Gyan
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:31:21.507Z
Comments.Text: @Mulvya Ok, added the output of the capture command.
Comments.UserDisplayName: Patrick Kenny
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-01-29T11:43:08.740Z
Comments.Text: It does detect audio: `Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s`. If it's silent, then this may be need to be changed at the driver level.
Comments.UserDisplayName: Gyan
Tags: <ffmpeg><blackmagic>
Title: ffmpeg and decklink- how to specify audio_input for hdmi video?
UserDisplayName: Patrick Kenny
ThreadText: # ffmpeg and decklink- how to specify audio_input for hdmi video?
  
  (Asked by: username_0 on 2017-01-29)
  
  I'm using an Intensity Pro 4K to capture with `ffmpeg` via the `decklink` commands.
  
  According to [the documentation](https://www.ffmpeg.org/ffmpeg-devices.html#decklink):
  
  > **video\_input**
  >
  > Sets the video input source. Must be ‘unset’, ‘sdi’, ‘hdmi’, ‘optical\_sdi’, ‘component’, ‘composite’ or ‘s\_video’. Defaults to
  > ‘unset’.
  >
  > **audio\_input**
  >
  > Sets the audio input source. Must be ‘unset’, ‘embedded’, ‘aes\_ebu’, ‘analog’, ‘analog\_xlr’, ‘analog\_rca’ or ‘microphone’.
  > Defaults to ‘unset’.
  
  So I set `-video_input hdmi`, which guarantees I will get the video via HDMI even if the Blackmagic driver is set to something else (e.g., component, which for some reason every time I reboot it gets reset to component).
  
  But, while I get video, I don't get audio. I tried setting `-audio_input` to `embedded` (no effect) `aes_ebu`, and `microphone` (not supported by device error).
  
  So, I still have to go to the Blackmagic video drivers and switch the input signal to HDMI.
  
  Is there a way to specify the hdmi audio feed together with the hdmi video feed on the ffmpeg command line?
  
  **Reference**
  
  Full command I am using:
  
  ```
  ffmpeg -rtbufsize 1500M -f decklink -video_input hdmi -i "Intensity Pro 4K@20" -pix_fmt yuv420p -c:a copy -c:v v210 abc.mov
  
  ```
  
  `list_formats` output:
  
  ```
  E:\>ffmpeg -f decklink -list_formats 1 -i "Intensity Pro 4K"
  ffmpeg version 3.2 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-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --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. 34.100 / 55. 34.100
    libavcodec     57. 64.100 / 57. 64.100
    libavformat    57. 56.100 / 57. 56.100
    libavdevice    57.  1.100 / 57.  1.100
    libavfilter     6. 65.100 /  6. 65.100
    libswscale      4.  2.100 /  4.  2.100
    libswresample   2.  3.100 /  2.  3.100
    libpostproc    54.  1.100 / 54.  1.100
  [decklink @ 0000000000f66460] Supported formats for 'Intensity Pro 4K':
  [decklink @ 0000000000f66460]   1       720x486 at 30000/1001 fps (interlaced, lower field first)
  [decklink @ 0000000000f66460]   2       720x576 at 25000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   3       1920x1080 at 24000/1001 fps
  [decklink @ 0000000000f66460]   4       1920x1080 at 24000/1000 fps
  [decklink @ 0000000000f66460]   5       1920x1080 at 25000/1000 fps
  [decklink @ 0000000000f66460]   6       1920x1080 at 30000/1001 fps
  [decklink @ 0000000000f66460]   7       1920x1080 at 30000/1000 fps
  [decklink @ 0000000000f66460]   8       1920x1080 at 25000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   9       1920x1080 at 30000/1001 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   10      1920x1080 at 30000/1000 fps (interlaced, upper field first)
  [decklink @ 0000000000f66460]   11      1920x1080 at 50000/1000 fps
  [decklink @ 0000000000f66460]   12      1920x1080 at 60000/1001 fps
  [decklink @ 0000000000f66460]   13      1920x1080 at 60000/1000 fps
  [decklink @ 0000000000f66460]   14      1280x720 at 50000/1000 fps
  [decklink @ 0000000000f66460]   15      1280x720 at 60000/1001 fps
  [decklink @ 0000000000f66460]   16      1280x720 at 60000/1000 fps
  [decklink @ 0000000000f66460]   17      3840x2160 at 24000/1001 fps
  [decklink @ 0000000000f66460]   18      3840x2160 at 24000/1000 fps
  [decklink @ 0000000000f66460]   19      3840x2160 at 25000/1000 fps
  [decklink @ 0000000000f66460]   20      3840x2160 at 30000/1001 fps
  [decklink @ 0000000000f66460]   21      3840x2160 at 30000/1000 fps
  Intensity Pro 4K: Immediate exit requested
  
  ```
  
  Output of `E:\>ffmpeg -rtbufsize 1500M -f decklink -video_input hdmi -audio_input embedded -i "Intensity Pro 4K@20" -pix_fmt yuv420p -c:a copy -c:v v210 abcde.mov`
  
  ```
  ffmpeg version 3.2 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-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --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. 34.100 / 55. 34.100
    libavcodec     57. 64.100 / 57. 64.100
    libavformat    57. 56.100 / 57. 56.100
    libavdevice    57.  1.100 / 57.  1.100
    libavfilter     6. 65.100 /  6. 65.100
    libswscale      4.  2.100 /  4.  2.100
    libswresample   2.  3.100 /  2.  3.100
    libpostproc    54.  1.100 / 54.  1.100
  [decklink @ 0000000002872cc0] Found Decklink mode 3840 x 2160 with rate 29.97
  [decklink @ 0000000002872cc0] Frame received (#1) - Input returned - Frames dropped 1
  Guessed Channel Layout for Input Stream #0.0 : stereo
  Input #0, decklink, from 'Intensity Pro 4K@20':
    Duration: N/A, start: 0.000000, bitrate: 3978870 kb/s
      Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
      Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422, 3840x2160, 3977334 kb/s, 29.97 tbr, 1000k tbn, 1000k tbc
  Incompatible pixel format 'yuv420p' for codec 'v210', auto-selecting format 'yuv422p'
  Output #0, mov, to 'abcde.mov':
    Metadata:
      encoder         : Lavf57.56.100
      Stream #0:0: Video: v210 (v210 / 0x30313276), yuv422p, 3840x2160, q=2-31, 200 kb/s, 29.97 fps, 30k tbn, 29.97 tbc
      Metadata:
        encoder         : Lavc57.64.100 v210
      Stream #0:1: Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, 1536 kb/s
  Stream mapping:
    Stream #0:1 -> #0:0 (rawvideo (native) -> v210 (native))
    Stream #0:0 -> #0:1 (copy)
  Press [q] to stop, [?] for help
  
  ```
  
  **Tags:** ffmpeg, blackmagic
  
  > **Comments:**
  > **username_1**: What's the full command you're using? And does list_formats show any audio selection?  
  > **username_0**: @Mulvya Updated my question.  
  > **username_1**: With the audio option set to embedded, does ffmpeg show any input audio stream?  
  > **username_0**: @Mulvya When I enter the command `E:\>ffmpeg -f decklink -video_input hdmi -audio_input embedded -list_formats 1 -i "Intensity Pro 4K"`, the output is the same as when I do not specify `-audio_input`.  
  > **username_1**: Of course, that's because you're listing formats. You need to add it to the capture command and check.  
  > **username_0**: @Mulvya Ok, added the output of the capture command.  
  > **username_1**: It does detect audio: `Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s`. If it's silent, then this may be need to be changed at the driver level.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_2 on 2017-02-21. Score: 1 | Accepted answer
  
  Using `embedded` (or omitting `-audio_input`) is the intended way to get the audio of HDMI or SDI signals.
  
  Please make sure that there is a 2ch-stereo audio signal on HDMI. If it is 5.1 or 7.1 you might have to use `-channels 8` in the commandline before the `-i`.
  
  Note: please pay attention to the `pix_fmt` warning. Leave that option out of your commandline.
  
  
  ---
  
  