Mention both ffmpeg & libav.

[apitrace] / README.markdown

diff --git a/README.markdown b/README.markdown
index 7545982e1110556bc9726aa53e261a8c4fdf4afd..c6eced574d28e416c727f8818a09c2d202fc10a3 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -269,14 +269,27 @@ This works only on Unices, and it will truncate the traces due to performance
 limitations.
 
 
-Recording a video with FFmpeg
------------------------------
+Recording a video with FFmpeg/Libav
+-----------------------------------
 
-You can make a video of the output by doing
+You can make a video of the output with FFmpeg by doing
 
     apitrace dump-images -o - application.trace \
     | ffmpeg -r 30 -f image2pipe -vcodec ppm -i pipe: -vcodec mpeg4 -y output.mp4
 
+or Libav (which replaces FFmpeg on recent Debian/Ubuntu distros) doing
+
+    apitrace dump-images -o - application.trace \
+    | avconv -r 30 -f image2pipe -vcodec ppm -i - -vcodec mpeg4 -y output.mp4
+
+Recording a video with gstreamer
+--------------------------------------
+
+You can make a video of the output with gstreamer by doing
+
+    glretrace --snapshot-format=RGB -s - smokinguns.trace | gst-launch-0.10 fdsrc blocksize=409600 ! queue \
+    ! videoparse format=rgb width=1920 height=1080 ! queue ! ffmpegcolorspace ! queue \
+    ! vaapiupload direct-rendering=0 ! queue ! vaapiencodeh264 ! filesink location=xxx.264
 
 Trimming a trace
 ----------------