Différences

Ci-dessous, les différences entre deux révisions de la page.

--- francois:ffmpeg_usage [2020/01/31 17:54] – créée francois
+++ francois:ffmpeg_usage [2020/04/06 13:56] (Version actuelle) – francois
@@ Ligne 1: / Ligne 1: @@
-h1. FFMPEG usage
+====== FFMPEG usage ======
-{{>toc}}
+====== useful links ======
-h2. useful links
 https://www.ffmpeg.org/ffmpeg-devices.html#decklink
@@ Ligne 11: / Ligne 9: @@
 https://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu
-h2. Configuration d'ubuntu
+====== Configuration d'ubuntu ======
-<pre>
+  sudo apt-get -y install autoconf automake build-essential libass-dev libfreetype6-dev \
-sudo apt-get -y install autoconf automake build-essential libass-dev libfreetype6-dev \
   libsdl2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev \
   libxcb-xfixes0-dev pkg-config texinfo wget zlib1g-dev x264 libx264-dev
-</pre>
-<pre>
-sudo apt-get install yasm
-</pre>
-h2. Compilation
+  sudo apt-get install yasm
-<pre>
+====== Compilation ======
-PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
-  --prefix="$HOME/ffmpeg_build" \
-  --pkg-config-flags="--static" \
-  --extra-cflags="-I$HOME/ffmpeg_build/include" \
-  --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
-  --bindir="$HOME/bin" \
-  --enable-gpl \
-  --enable-libass \
-  --enable-libfdk-aac \
-  --enable-libfreetype \
-  --enable-libmp3lame \
-  --enable-libopus \
-  --enable-libtheora \
-  --enable-libvorbis \
-  --enable-libvpx \
-  --enable-libx264 \
-  --enable-nonfree \
-  --enable-decklink \
-  --extra-cflags=-I/home/damien/Blackmagic_DeckLink_SDK_10.9.5/Linux/include
-make -j 8
+  PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure \
-sudo make install
+    --prefix="$HOME/ffmpeg_build" \
+    --pkg-config-flags="--static" \
+    --extra-cflags="-I$HOME/ffmpeg_build/include" \
+    --extra-ldflags="-L$HOME/ffmpeg_build/lib" \
+    --bindir="$HOME/bin" \
+    --enable-gpl \
+    --enable-libass \
+    --enable-libfdk-aac \
+    --enable-libfreetype \
+    --enable-libmp3lame \
+    --enable-libopus \
+    --enable-libtheora \
+    --enable-libvorbis \
+    --enable-libvpx \
+    --enable-libx264 \
+    --enable-nonfree \
+    --enable-decklink \
+    --extra-cflags=-I/home/damien/Blackmagic_DeckLink_SDK_10.9.5/Linux/include
-</pre>
+  make -j 8
+  sudo make install
-h2. Usage
+====== Usage ======
-h3. List output devices
+===== List output devices =====
     ffmpeg -i test.avi -f decklink -list_devices 1 dummy
-h3. List supported formats:
+===== List supported formats =====
     ffmpeg -i test.avi -f decklink -list_formats 1 'DeckLink Mini Monitor'
-h3. Play video clip:
+===== Play video clip =====
     ffmpeg -i test.avi -f decklink -pix_fmt uyvy422 'DeckLink Mini Monitor'
-h3. Play video clip with non-standard framerate or video size:
+===== Play video clip with non-standard framerate or video size =====
     ffmpeg -i test.avi -f decklink -pix_fmt uyvy422 -s 720x486 -r 24000/1001 'DeckLink Mini Monitor'
-h3. List output devices
+===== List output devices =====
   ffmpeg -f decklink -list_devices 1 dummy -i big_buck_bunny_1080p_stereo.avi
-h3. List supported formats
+===== List supported formats =====
   ffmpeg -f decklink -list_formats 1 'DeckLink Quad (1)' -i big_buck_bunny_1080p_stereo.avi
-h3. Play video clip
+===== Play video clip =====
   ffmpeg -f decklink  -pix_fmt uyvy422 'DeckLink Quad (1)' -i big_buck_bunny_1080p_stereo.avi
@@ Ligne 83: / Ligne 74: @@
   mplayer capture.raw -demuxer rawvideo -rawvideo fps=29.97:w=1920:h=1080:uyvy
-h3. List input devices:
+===== List input devices =====
   ffmpeg -f decklink -list_devices 1 -i dummy
-h3. List supported formats:
+===== List supported formats =====
   ffmpeg -f decklink -list_formats 1 -i 'Intensity Pro'
-h3. Capture video clip at 1080i50:
+===== Capture video clip at 1080i50 =====
   ffmpeg -format_code Hi50 -f decklink -i 'Intensity Pro' -acodec copy -vcodec copy output.avi
-h3. Capture video clip at 1080i50 10 bit:
+===== Capture video clip at 1080i50 10 bit =====
   ffmpeg -bm_v210 1 -format_code Hi50 -f decklink -i 'UltraStudio Mini Recorder' -acodec copy -vcodec copy output.avi
-h3. Capture video clip at 1080i50 with 16 audio channels:
+===== Capture video clip at 1080i50 with 16 audio channels =====
   ffmpeg -channels 16 -format_code Hi50 -f decklink -i 'UltraStudio Mini Recorder' -acodec copy -vcodec copy output.avi
   ffmpeg -format_code Hp29 -f decklink -i 'DeckLink Quad (8)' -vcodec copy output.avi
   ffmpeg -format_code Hp29 -f decklink -i 'DeckLink Quad (8)' -vcodec h264 output.avi
-h3. Compression h.264
+===== Compression h.264 =====
   ffmpeg -i video_720p-16Mbps.mp4 -c:v libx264 -preset fast -crf 10 -profile:v high -level 4.0 video_opengl_scaled_720p_compressé_2.mp4
@@ Ligne 114: / Ligne 104: @@
 The options are documented in the ffmpeg site.
-h3. Crop and pad filters
+===== Crop and pad filters =====
   ffmpeg -i video_720p-16Mbps.mp4 -vf "crop=1024:720 [cropout]; [cropout] pad=1024:768:0:24" -c:v libx264 -preset fast -crf 10 -profile:v high -level 4.0 video_opengl_scaled_720p_compressé_2.mp4
-h3. display terratec G1 (USB composite capture). Display the captured input in a window
+===== display terratec G1 (USB composite capture). Display the captured input in a window =====
   ffmpeg -input_format rgb565 -i /dev/video0 -f opengl "window title"
-h3. Display blackmagic input on a opengl window
+===== Display blackmagic input on a opengl window =====
   ffmpeg -format_code hp50 -f decklink -i 'DeckLink Quad (1)' -vcodec rawvideo -pix_fmt rgba -f sdl "window"
-h3. Test frames generation
+===== Test frames generation =====
   ffmpeg -f lavfi -i testsrc2=duration=100:size=1280x720:rate=60 -c:v libx264 -preset fast -crf 0 -level 4.0 test2_720p60.mp4
 with white box in the first second
   ffmpeg -f decklink  -pix_fmt uyvy422 'DeckLink Quad (1)' -i test.mp4
@@ Ligne 158: / Ligne 147: @@
   ffmpeg -f lavfi -i testsrc2=duration=10:size=1920x1080:rate=30 -vf "frei0r_src=size=1920x1080:framerate=10:filter_name=partik0l:filter_params=1234 [overlay]; [in][overlay] overlay" -c:v libx264 -preset fast -crf 0 -level 4.0 test5_1080p30.mp4
-h3. Other examples
+===== Other examples =====
-<pre>
+  stream = ffmpeg.input('DeckLink Quad (8)')
-stream = ffmpeg.input('DeckLink Quad (8)')
+  stream = ffmpeg.output(stream, 'dummy.mp4')
-stream = ffmpeg.output(stream, 'dummy.mp4')
+  ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
-ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
+  ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
-ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
-</pre>
   ffmpeg -i test.mp4 -filter_complex "loop=2:2500" -vcodec h264 output.avi
@@ Ligne 172: / Ligne 159: @@
 ----
-use -ss 1 to avoid the recording of the Colored Mire at the beginning
-<pre>
-ffmpeg -format_code 24ps  -ss 1 -f decklink -i 'DeckLink Quad (8)' -vcodec h264 -y output.avi
-ffplay output.avi
+use -ss 1 to avoid the recording of the Colored Mire at the beginning
+  ffmpeg -format_code 24ps  -ss 1 -f decklink -i 'DeckLink Quad (8)' -vcodec h264 -y output.avi
+  ffplay output.avi
-[decklink @ 0x3f08560] Supported formats for 'DeckLink Quad (8)':
+  [decklink @ 0x3f08560] Supported formats for 'DeckLink Quad (8)':
         format_code     description
         ntsc            720x486 at 30000/1001 fps (interlaced, lower field first)
@@ Ligne 197: / Ligne 183: @@
         hp59            1280x720 at 60000/1001 fps
         hp60            1280x720 at 60000/1000 fps
-</pre>
-<pre>
-stream = ffmpeg.input('DeckLink Quad (8)')
-stream = ffmpeg.output(stream, 'dummy.mp4')
-ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
-ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
-</pre>
+  stream = ffmpeg.input('DeckLink Quad (8)')
+  stream = ffmpeg.output(stream, 'dummy.mp4')
+  ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
+  ffmpeg.run(stream, format='decklink', format_code='Hp29', vcodec='h264')
   ffmpeg -i test.mp4 -filter_complex "loop=2:2500" -vcodec h264 output.avi
-<pre>
+  # play sequence in loop
-# play sequence in loop
+  # (ffmpeg.input('test.mp4').filter_('loop', "-1", "125")
-# (ffmpeg.input('test.mp4').filter_('loop', "-1", "125")
+  #     .output('DeckLink Quad (1)', pix_fmt='uyvy422', format='decklink')
-#     .output('DeckLink Quad (1)', pix_fmt='uyvy422', format='decklink')
+  #     .run()
-#     .run()
+  # )
-# )
-</pre>
   ffmpeg -f dekclink -pix_fmt uyvy422 'DeckLink Quad (1)' -i /bigdata/damien/video_samples/testsrc_rawvideo_uyvy422_1920x1080_30.0_5_markup_box.avi -filter_complex "loop=-1:3000"
+adds black frames at the beginning
-adds black frames at the beginning
-<pre>
+  in_file = ffmpeg.input('test.mp4')
-in_file = ffmpeg.input('test.mp4')
+  marker = ffmpeg.input('color=c=black:s=1920x1080:r=24:d=1', format='lavfi')
-marker = ffmpeg.input('color=c=black:s=1920x1080:r=24:d=1', format='lavfi')
+  ffmpeg.concat(
-ffmpeg.concat(
+          marker.trim(start_frame=0, end_frame=10),
-        marker.trim(start_frame=0, end_frame=10),
+          in_file
-        in_file
+      ).output('test_marker.mp4', vcodec='h264').run()
-    ).output('test_marker.mp4', vcodec='h264').run()
-</pre>