From 9df208345cdf378928d114c69ec5b86ad4282088 Mon Sep 17 00:00:00 2001 From: Reto Kromer Date: Thu, 28 Feb 2019 16:30:19 +0100 Subject: [PATCH] unify syntax of recipe with syntax of the index --- index.html | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/index.html b/index.html index b144fcc..6efb7f1 100644 --- a/index.html +++ b/index.html @@ -623,7 +623,7 @@
-

Change Display Aspect Ratio without reencoding video

+

Change Display Aspect Ratio without re-encoding video

ffmpeg -i input_file -c:v copy -aspect 4:3 output_file

ffmpeg
starts the command
@@ -680,7 +680,7 @@ MediaInfo screenshots of colorspace metadata

Using this command it is possible to add Rec.709 tags to a file that is actually Rec.601 (etc), so apply with caution!

These commands are relevant for H.264 and H.265 videos, encoded with libx264 and libx265 respectively.

-

Note: If you wish to embed colorspace metadata without changing to another colorspace, omit -vf colormatrix=src:dst. However, since it is libx264/libx265 that writes the metadata, it’s not possible to add these tags without reencoding the video stream.

+

Note: If you wish to embed colorspace metadata without changing to another colorspace, omit -vf colormatrix=src:dst. However, since it is libx264/libx265 that writes the metadata, it’s not possible to add these tags without re-encoding the video stream.

For all possible values for -color_primaries, -color_trc, and -colorspace, see the FFmpeg documentation on codec options.


1. Out of step with the regular pattern, -color_trc doesn’t accept bt470bg; it is instead here referred to directly as gamma.
@@ -2137,7 +2137,7 @@

ffmpeg
starts the command
-f lavfi
tells FFmpeg to use the libavfilter input virtual device
-
-i testsrc=size=720x576:rate=25
asks for the testsrc filter pattern as input. Adjusting the size and rate options allows you to choose a specific frame size and framerate.
+
-i testsrc=size=720x576:rate=25
asks for the testsrc filter pattern as input. Adjusting the size and rate options allows you to choose a specific frame size and framerate.
The different test patterns that can be generated are listed here.
-c:v v210
transcodes video from rawvideo to 10-bit Uncompressed Y′CBCR 4:2:2. Alter this setting to set your desired codec.
-t 10
specifies recording time of 10 seconds