Changes between Version 55 and Version 56 of FilteringGuide

Timestamp:

Jan 27, 2023, 12:21:57 PM (4 years ago)

Author:

Djamana

Comment:

Added white spaces for better readability

FilteringGuide

@@ -84 +84 @@
 
 Here four inputs are filtered together using the `-filter_complex` option. In this case all of the inputs are the `-f lavfi -i testsrc` (the [https://ffmpeg.org/ffmpeg-filters.html#color_002c-haldclutsrc_002c-nullsrc_002c-rgbtestsrc_002c-smptebars_002c-smptehdbars_002c-testsrc testsrc source filter]) but could be other inputs.
+(Encoded video is 5 seconds and uses the 'ffv1' video codec.)
 
 Within the filtergraph the first input is unchanged, and the other three inputs are individually filtered using [https://ffmpeg.org/ffmpeg-filters.html#hflip hflip], [https://ffmpeg.org/ffmpeg-filters.html#negate negate], and [https://ffmpeg.org/ffmpeg-filters.html#edgedetect edgedetect]. The [https://ffmpeg.org/ffmpeg-filters.html#hstack hstack] and [https://ffmpeg.org/ffmpeg-filters.html#vstack vstack] filters are then used to stack each video into the desired location.
 
 {{{
-ffmpeg -f lavfi -i testsrc -f lavfi -i testsrc -f lavfi -i testsrc -f lavfi -i testsrc -filter_complex \
-"[1:v]negate[a]; \
- [2:v]hflip[b]; \
- [3:v]edgedetect[c]; \
- [0:v][a]hstack=inputs=2[top]; \
- [b][c]hstack=inputs=2[bottom]; \
- [top][bottom]vstack=inputs=2[out]" -map "[out]" -c:v ffv1 -t 5 multiple_input_grid.avi
+ffmpeg \
+  -f lavfi -i testsrc   -f lavfi -i testsrc \
+  -f lavfi -i testsrc   -f lavfi -i testsrc \
+  -filter_complex \
+"[1:v] negate     [a]; \
+ [2:v] hflip      [b]; \
+ [3:v] edgedetect [c]; \
+ [0:v] [a]      hstack=inputs=2 [top]; \
+ [b]   [c]      hstack=inputs=2 [bottom]; \
+ [top] [bottom] vstack=inputs=2 [out]" \
+  -map "[out]" \
+  -c:v ffv1   -t 5   multiple_input_grid.avi
 }}}
 
@@ -100 +106 @@
 
 {{{
-ffmpeg -f lavfi -i testsrc -f lavfi -i testsrc -f lavfi -i testsrc -f lavfi -i testsrc -filter_complex \
-"[0:v]pad=iw*2:ih*2[a]; \
- [1:v]negate[b]; \
- [2:v]hflip[c]; \
- [3:v]edgedetect[d]; \
- [a][b]overlay=w[x]; \
- [x][c]overlay=0:h[y]; \
- [y][d]overlay=w:h[out]" -map "[out]" -c:v ffv1 -t 5 multiple_input_grid.avi
+ffmpeg \
+  -f lavfi -i testsrc   -f lavfi -i testsrc \
+  -f lavfi -i testsrc   -f lavfi -i testsrc \
+  -filter_complex \
+filter_complex \
+"[0:v]  pad=iw*2:ih*2 [a]; \
+ [1:v]  negate        [b]; \
+ [2:v]  hflip         [c]; \
+ [3:v]  edgedetect    [d]; \
+ [a] [b] overlay=w   [x]; \
+ [x] [c] overlay=0:h [y]; \
+ [y] [d] overlay=w:h [out]" \
+  -map "[out]" \
+  -c:v ffv1   -t 5   multiple_input_grid.avi
 }}}