Comment 27 for bug 1970674

Test force_key_frames is also failing on 18.04.

TEST force_key_frames
--- /home/user/ffmpeg-3.4.11/tests/ref/fate/force_key_frames 2022-05-14 00:07:14.000000000 +0100
+++ tests/data/fate/force_key_frames 2022-06-04 22:55:25.002760714 +0100
@@ -1,4 +1,3 @@
-07567b9528b8de523faaf49e4e1e0fc6 *tests/data/fate/force_key_frames.avi
-113312 tests/data/fate/force_key_frames.avi
-b2e92b97bac0243242281d71108ffdbd *tests/data/fate/force_key_frames.out.framecrc
-stddev:34612.83 PSNR: 5.54 MAXDIFF:61408 bytes: 7603200/ 264
+bbb8942a83e3c1c4e446b6aca998e83a *tests/data/fate/force_key_frames.avi
+5652 tests/data/fate/force_key_frames.avi
+d41d8cd98f00b204e9800998ecf8427e *tests/data/fate/force_key_frames.out.framecrc
Test force_key_frames failed. Look at tests/data/fate/force_key_frames.err for details.
make: *** [fate-force_key_frames] Error 2
/home/user/ffmpeg-3.4.11/tests/Makefile:225: recipe for target 'fate-force_key_frames' failed