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我試圖從Ubuntu Linux中的Blackmagic DeckLink 4K Extreme捕獲卡的HDMI輸入端口使用ffmpeg捕獲視頻。Ffmpeg在Ubuntu Linux中捕獲Decklink 4k Extreme的視頻命令
由於每ffmpeg Documentation我曾嘗試以下：
ffmpeg -f decklink -video_input 'hdmi' -i 'DeckLink 4K Extreme (1)@14' -acodec copy -vcodec copy ~/testCapture/card1_f14_hdmi.avi
但無論我做什麼，我總是得到這個圖片作爲視頻
我的ffmpeg版本是：
ffmpeg version git-2016-08-15-4899953 Copyright (c) 2000-2016 the FFmpeg developers built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3) configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-decklink --extra-cflags=-I/root/decklinkSDK/Blackmagic_DeckLink_SDK/Linux/include --extra-ldflags=-L/root/decklinkSDK/Blackmagic_DeckLink_SDK/Linux/include --enable-nonfree libavutil 55. 28.100/55. 28.100 libavcodec 57. 51.102/57. 51.102 libavformat 57. 46.101/57. 46.101 libavdevice 57. 0.102/57. 0.102 libavfilter 6. 51.100/6. 51.100 libswscale 4. 1.100/4. 1.100 libswresample 2. 1.100/2. 1.100 libpostproc 54. 0.100/54. 0.100
我有兩個的這些卡按如下：
ffmpeg -f decklink -list_devices 1 -i dummy ..... [decklink @ 0x2e9e440] Blackmagic DeckLink devices: [decklink @ 0x2e9e440] 'DeckLink 4K Extreme (1)' [decklink @ 0x2e9e440] 'DeckLink 4K Extreme (2)'
我能夠得到的支持的格式列表有以下：
ffmpeg -f decklink -list_formats 1 -i 'DeckLink 4K Extreme (1)' ... [decklink @ 0x36e2440] Supported formats for 'DeckLink 4K Extreme (1)': [decklink @ 0x36e2440] 1 720x486 at 30000/1001 fps (interlaced, lower field first) [decklink @ 0x36e2440] 2 720x576 at 25000/1000 fps (interlaced, upper field first) [decklink @ 0x36e2440] 3 1920x1080 at 24000/1001 fps [decklink @ 0x36e2440] 4 1920x1080 at 24000/1000 fps [decklink @ 0x36e2440] 5 1920x1080 at 25000/1000 fps [decklink @ 0x36e2440] 6 1920x1080 at 30000/1001 fps [decklink @ 0x36e2440] 7 1920x1080 at 30000/1000 fps [decklink @ 0x36e2440] 8 1920x1080 at 25000/1000 fps (interlaced, upper field first) [decklink @ 0x36e2440] 9 1920x1080 at 30000/1001 fps (interlaced, upper field first) [decklink @ 0x36e2440] 10 1920x1080 at 30000/1000 fps (interlaced, upper field first) [decklink @ 0x36e2440] 11 1920x1080 at 50000/1000 fps [decklink @ 0x36e2440] 12 1920x1080 at 60000/1001 fps [decklink @ 0x36e2440] 13 1920x1080 at 60000/1000 fps [decklink @ 0x36e2440] 14 1280x720 at 50000/1000 fps [decklink @ 0x36e2440] 15 1280x720 at 60000/1001 fps [decklink @ 0x36e2440] 16 1280x720 at 60000/1000 fps ... DeckLink 4K Extreme (1): Immediate exit requested
我應該如何使用ffmpeg來捕捉來自HDMI端口聲音的高清視頻？
BM對輸入格式和樣本格式很挑剔。我有確切的問題，並已通過USB sdi捕獲卡進行驗證，我的SDI源是有效的。當我使用沒有連接SDI的端口時，我會捕獲相同的條形圖。 – kevinf