[FFmpeg-devel] FFmpeg, zlib based modules' FATE tests expecting bit-exact and Fedora switching to zlib-ng

Jan Ekström jeebjp at gmail.com
Fri May 10 23:38:14 EEST 2024 

Hi,

As of Fedora 40, the zlib provider has been switched to zlib-ng
(https://fedoraproject.org/wiki/Changes/ZlibNGTransition). This has
reared the ugly fact that we expect that the usage of zlib APIs is
bit-exact.

Some of these tests such as copy-apng that only do remux can be moved
from transcode shell command to stream_remux (which does not output a
hash and the exact file size), but then there are such that f.ex.
encode PNG for cover art handling or so. An example of switching is
for example the patch in
https://github.com/jeeb/ffmpeg/commits/zlib_ng_fixups .

Thus my question to the community is, how do we handle this? Currently
on Fedora 40 there's a bunch of failures which makes actual
development somewhat harder as you need to ignore these (or always
have a commit updating the references in your working branch).

One alternative is to check for zlib-ng in configure, and then have
two separate reference files, but if zlib-ng is still an active
project, its behavior might change in the future? I mean, zlib hasn't
changed for the same parameters for quite a while, so there is a
precedent for it, but somehow it feels imperfect.

So I'd love to hear any ideas for how to handle this.

The list of current failures is as follows:

diff --git a/tests/ref/fate/copy-apng b/tests/ref/fate/copy-apng
index 3057573cee..c180273c9f 100644
--- a/tests/ref/fate/copy-apng
+++ b/tests/ref/fate/copy-apng
@@ -1,5 +1,5 @@
-a4c46fad7716ad094eb3c78b74ca0244 *tests/data/fate/copy-apng.apng
-6209864 tests/data/fate/copy-apng.apng
+d726bd22bfa94786c1294b882df09109 *tests/data/fate/copy-apng.apng
+6207936 tests/data/fate/copy-apng.apng
 #tb 0: 1/25
 #media_type 0: video
 #codec_id 0: rawvideo
diff --git a/tests/ref/fate/cover-art-aiff-id3v2-remux
b/tests/ref/fate/cover-art-aiff-id3v2-remux
index a59ba37c65..8e29b3a102 100644
--- a/tests/ref/fate/cover-art-aiff-id3v2-remux
+++ b/tests/ref/fate/cover-art-aiff-id3v2-remux
@@ -1,5 +1,5 @@
-330ad2bf538e91a31752b38024461df1
*tests/data/fate/cover-art-aiff-id3v2-remux.aiff
-608914 tests/data/fate/cover-art-aiff-id3v2-remux.aiff
+b8982155c5d711d99fbeb0e3140ad691
*tests/data/fate/cover-art-aiff-id3v2-remux.aiff
+614766 tests/data/fate/cover-art-aiff-id3v2-remux.aiff
 #tb 0: 1/44100
 #media_type 0: audio
 #codec_id 0: pcm_s16be
@@ -27,7 +27,7 @@
 #sar 4: 1/1
 0,          0,          0,     1024,     4096, 0xdac4695d
 1,          0,          0,        0,    19650, 0xd5662610
-2,          0,          0,        0,   184497, 0xc33f8d44
+2,          0,          0,        0,   190348, 0x84b5e334
 3,          0,          0,        0,   368254, 0xfa7f4bd8
 4,          0,          0,        0,    19650, 0xd5662610
 0,       1024,       1024,     1024,     4096, 0xad05c909
diff --git a/tests/ref/fate/cover-art-flac-remux
b/tests/ref/fate/cover-art-flac-remux
index fa91975881..b46e0cc4d4 100644
--- a/tests/ref/fate/cover-art-flac-remux
+++ b/tests/ref/fate/cover-art-flac-remux
@@ -1,5 +1,5 @@
-6defc5081a59ab12c8a5f9e263b25068 *tests/data/fate/cover-art-flac-remux.flac
-1098537 tests/data/fate/cover-art-flac-remux.flac
+248679bc3add689963c5aef23cfca4f4 *tests/data/fate/cover-art-flac-remux.flac
+1108011 tests/data/fate/cover-art-flac-remux.flac
 #extradata 0:       34, 0x8d830abd
 #tb 0: 1/44100
 #media_type 0: audio
@@ -38,7 +38,7 @@
 #channel_layout_name 6: 2 channels (FL+FC)
 0,          0,          0,     4608,       14, 0x242b036d
 1,          0,          0,        0,    66888, 0x1fd72743
-2,          0,          0,        0,   438706, 0x8bcb753b
+2,          0,          0,        0,   448180, 0xe9f12350
 3,          0,          0,        0,    21671, 0x7d1c6030
 4,          0,          0,        0,   522758, 0x7a63572f
 5,          0,          0,        0,    21671, 0x7d1c6030
diff --git a/tests/ref/fate/cover-art-mp3-id3v2-remux
b/tests/ref/fate/cover-art-mp3-id3v2-remux
index 52b7e72a56..1b7b3584a6 100644
--- a/tests/ref/fate/cover-art-mp3-id3v2-remux
+++ b/tests/ref/fate/cover-art-mp3-id3v2-remux
@@ -1,5 +1,5 @@
-94946f0efd5f9bb0061ac1fbff7d731f *tests/data/fate/cover-art-mp3-id3v2-remux.mp3
-399346 tests/data/fate/cover-art-mp3-id3v2-remux.mp3
+0659a01f91ad6ca205d462da37f64b1d *tests/data/fate/cover-art-mp3-id3v2-remux.mp3
+404814 tests/data/fate/cover-art-mp3-id3v2-remux.mp3
 #tb 0: 1/14112000
 #media_type 0: audio
 #codec_id 0: mp3
@@ -23,7 +23,7 @@
 0,    -353590,    -353590,   368640,      417, 0x15848290, S=1,       10
 1,          0,          0,        0,   208350, 0x291b44d1
 2,          0,          0,        0,    15760, 0x71d5c418
-3,          0,          0,        0,   165671, 0x7c1c8070
+3,          0,          0,        0,   171139, 0x0bcc57ba
 0,      15050,      15050,   368640,      418, 0x46f684a4
 0,     383690,     383690,   368640,      418, 0x46f684a4
 0,     752330,     752330,   368640,      418, 0x46f684a4
diff --git a/tests/ref/fate/mov-cover-image b/tests/ref/fate/mov-cover-image
index 5f65c630ea..87efa84ad9 100644
--- a/tests/ref/fate/mov-cover-image
+++ b/tests/ref/fate/mov-cover-image
@@ -1,5 +1,5 @@
-54a8870d5d1e6cc4da28ae422aa70898 *tests/data/fate/mov-cover-image.mp4
-1011919 tests/data/fate/mov-cover-image.mp4
+2c46ae0e463b23e7120c67f61fb9b0cf *tests/data/fate/mov-cover-image.mp4
+1011780 tests/data/fate/mov-cover-image.mp4
 #extradata 0:        2, 0x00340022
 #tb 0: 1/44100
 #media_type 0: audio
@@ -20,7 +20,7 @@
 0,      -1088,      -1088,     1024,        6, 0x027e00e8, F=0x5
 0,        -64,        -64,     1024,        6, 0x027e00e8
 1,          0,          0,        0,    25441, 0xe82503b0
-2,          0,          0,        0,    32657, 0x080255d2
+2,          0,          0,        0,    32518, 0x8a64fb8f
 0,        960,        960,     1024,        6, 0x027e00e8
 0,       1984,       1984,     1024,        6, 0x027e00e8
 0,       3008,       3008,     1024,        6, 0x027e00e8
diff --git a/tests/ref/fate/png-icc b/tests/ref/fate/png-icc
index 19f8c0a752..4988fb0e66 100644
--- a/tests/ref/fate/png-icc
+++ b/tests/ref/fate/png-icc
@@ -1,5 +1,5 @@
-c460cd06a88ace94d7c76a6309aa8fb8 *tests/data/fate/png-icc.image2
-49441 tests/data/fate/png-icc.image2
+e97b4486d4e9ce8b02144f82f78e8fd6 *tests/data/fate/png-icc.image2
+49994 tests/data/fate/png-icc.image2
 #tb 0: 1/25
 #media_type 0: video
 #codec_id 0: rawvideo
@@ -19,7 +19,7 @@ best_effort_timestamp_time=0.000000
 duration=1
 duration_time=0.040000
 pkt_pos=0
-pkt_size=49441
+pkt_size=49994
 width=128
 height=128
 crop_top=0
diff --git a/tests/ref/lavf/apng b/tests/ref/lavf/apng
index 95f1fbee6f..423d22dc4d 100644
--- a/tests/ref/lavf/apng
+++ b/tests/ref/lavf/apng
@@ -1,3 +1,3 @@
-a4c46fad7716ad094eb3c78b74ca0244 *tests/data/lavf/lavf.apng
-6209864 tests/data/lavf/lavf.apng
+d726bd22bfa94786c1294b882df09109 *tests/data/lavf/lavf.apng
+6207936 tests/data/lavf/lavf.apng
 tests/data/lavf/lavf.apng CRC=0x87b3c15f
diff --git a/tests/ref/lavf/apng.png b/tests/ref/lavf/apng.png
index b42f5a8db8..706d24af6d 100644
--- a/tests/ref/lavf/apng.png
+++ b/tests/ref/lavf/apng.png
@@ -1,3 +1,3 @@
-c5900fdd1b2fc30b985793f5226fd0c4 *tests/data/lavf/lavf.apng.png
-248854 tests/data/lavf/lavf.apng.png
+6e48b18af141c2bc83d989d983927fcf *tests/data/lavf/lavf.apng.png
+248721 tests/data/lavf/lavf.apng.png
 tests/data/lavf/lavf.apng.png CRC=0xd8c7b7a1
diff --git a/tests/ref/lavf/gray16be.png b/tests/ref/lavf/gray16be.png
index 4f4ce179d2..bc764cf46a 100644
--- a/tests/ref/lavf/gray16be.png
+++ b/tests/ref/lavf/gray16be.png
@@ -1,3 +1,3 @@
-6cf54c13aa407b77547cf6dfe23ecba3
*tests/data/images/gray16be.png/02.gray16be.png
-47365 tests/data/images/gray16be.png/02.gray16be.png
+6d189fda32543f617ed68e48ee6f1b36
*tests/data/images/gray16be.png/02.gray16be.png
+47358 tests/data/images/gray16be.png/02.gray16be.png
 tests/data/images/gray16be.png/%02d.gray16be.png CRC=0x893f10ef
diff --git a/tests/ref/lavf/png b/tests/ref/lavf/png
index 2385ad1800..8d166aa089 100644
--- a/tests/ref/lavf/png
+++ b/tests/ref/lavf/png
@@ -1,3 +1,3 @@
-2af72da4468e61a37c220b25cb28618a *tests/data/images/png/02.png
-248633 tests/data/images/png/02.png
+b8504824ff9d5a06c35623866f645715 *tests/data/images/png/02.png
+248552 tests/data/images/png/02.png
 tests/data/images/png/%02d.png CRC=0x6da01946
diff --git a/tests/ref/lavf/rgb48be.png b/tests/ref/lavf/rgb48be.png
index b893401a8f..1995106fdc 100644
--- a/tests/ref/lavf/rgb48be.png
+++ b/tests/ref/lavf/rgb48be.png
@@ -1,3 +1,3 @@
-b4e38244c97debe3f528e7d1adb283ef *tests/data/images/rgb48be.png/02.rgb48be.png
-511900 tests/data/images/rgb48be.png/02.rgb48be.png
+d2fbe43c3172ace433be72aa16d54567 *tests/data/images/rgb48be.png/02.rgb48be.png
+510957 tests/data/images/rgb48be.png/02.rgb48be.png
 tests/data/images/rgb48be.png/%02d.rgb48be.png CRC=0x5984c023
diff --git a/tests/ref/seek/vsynth_lena-flashsv
b/tests/ref/seek/vsynth_lena-flashsv
index 25176ba817..e9a68bd835 100644
--- a/tests/ref/seek/vsynth_lena-flashsv
+++ b/tests/ref/seek/vsynth_lena-flashsv
@@ -1,46 +1,46 @@
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240757
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240301
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240757
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240301
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:1 dts: 1.880000 pts: 1.880000 pos:11605750
size:254053
+ret: 0         st: 0 flags:1 dts: 1.880000 pts: 1.880000 pos:11589499
size:253882
 ret: 0         st: 0 flags:0  ts: 0.788000
-ret: 0         st: 0 flags:1 dts: 0.800000 pts: 0.800000 pos:4820505
size:245503
+ret: 0         st: 0 flags:1 dts: 0.800000 pts: 0.800000 pos:4812061
size:245132
 ret:-1         st: 0 flags:1  ts:-0.317000
 ret:-1         st:-1 flags:0  ts: 2.576668
 ret: 0         st:-1 flags:1  ts: 1.470835
-ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:8811899
size:253041
+ret: 0         st: 0 flags:1 dts: 1.440000 pts: 1.440000 pos:8797915
size:252720
 ret: 0         st: 0 flags:0  ts: 0.365000
-ret: 0         st: 0 flags:1 dts: 0.400000 pts: 0.400000 pos:2387440
size:241101
+ret: 0         st: 0 flags:1 dts: 0.400000 pts: 0.400000 pos:2383396
size:240660
 ret:-1         st: 0 flags:1  ts:-0.741000
 ret:-1         st:-1 flags:0  ts: 2.153336
 ret: 0         st:-1 flags:1  ts: 1.047503
-ret: 0         st: 0 flags:1 dts: 1.040000 pts: 1.040000 pos:6302822
size:248927
+ret: 0         st: 0 flags:1 dts: 1.040000 pts: 1.040000 pos:6292106
size:248524
 ret: 0         st: 0 flags:0  ts:-0.058000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240757
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240301
 ret: 0         st: 0 flags:1  ts: 2.836000
-ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12114700
size:254237
+ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12098101
size:254098
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:1 dts: 1.760000 pts: 1.760000 pos:10843564
size:253913
+ret: 0         st: 0 flags:1 dts: 1.760000 pts: 1.760000 pos:10827740
size:253779
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 0 flags:1 dts: 0.600000 pts: 0.600000 pos:3598793
size:243372
+ret: 0         st: 0 flags:1 dts: 0.600000 pts: 0.600000 pos:3592454
size:242967
 ret: 0         st: 0 flags:0  ts:-0.482000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240757
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240301
 ret: 0         st: 0 flags:1  ts: 2.413000
-ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12114700
size:254237
+ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12098101
size:254098
 ret: 0         st:-1 flags:0  ts: 1.306672
-ret: 0         st: 0 flags:1 dts: 1.320000 pts: 1.320000 pos:8053704
size:252195
+ret: 0         st: 0 flags:1 dts: 1.320000 pts: 1.320000 pos:8040597
size:251869
 ret: 0         st:-1 flags:1  ts: 0.200839
-ret: 0         st: 0 flags:1 dts: 0.200000 pts: 0.200000 pos:1187809
size:238567
+ret: 0         st: 0 flags:1 dts: 0.200000 pts: 0.200000 pos:1185826
size:238193
 ret: 0         st: 0 flags:0  ts:-0.905000
-ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240757
+ret: 0         st: 0 flags:1 dts: 0.000000 pts: 0.000000 pos:    187
size:240301
 ret: 0         st: 0 flags:1  ts: 1.989000
-ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12114700
size:254237
+ret: 0         st: 0 flags:1 dts: 1.960000 pts: 1.960000 pos:12098101
size:254098
 ret: 0         st:-1 flags:0  ts: 0.883340
-ret: 0         st: 0 flags:1 dts: 0.920000 pts: 0.920000 pos:5559226
size:247341
+ret: 0         st: 0 flags:1 dts: 0.920000 pts: 0.920000 pos:5549628
size:246937
 ret:-1         st:-1 flags:1  ts:-0.222493
 ret:-1         st: 0 flags:0  ts: 2.672000
 ret: 0         st: 0 flags:1  ts: 1.566000
-ret: 0         st: 0 flags:1 dts: 1.560000 pts: 1.560000 pos:9572235
size:254219
+ret: 0         st: 0 flags:1 dts: 1.560000 pts: 1.560000 pos:9557373
size:253981
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:2870241
size:242377
+ret: 0         st: 0 flags:1 dts: 0.480000 pts: 0.480000 pos:2865294
size:241872
 ret:-1         st:-1 flags:1  ts:-0.645825
diff --git a/tests/ref/vsynth/vsynth1-flashsv b/tests/ref/vsynth/vsynth1-flashsv
index 8b2783032b..9247a51b7b 100644
--- a/tests/ref/vsynth/vsynth1-flashsv
+++ b/tests/ref/vsynth/vsynth1-flashsv
@@ -1,4 +1,4 @@
-97894502b4cb57aca1105b6333f72dae *tests/data/fate/vsynth1-flashsv.flv
-14681925 tests/data/fate/vsynth1-flashsv.flv
+4c16662b450725a0167a363bd56d956b *tests/data/fate/vsynth1-flashsv.flv
+14687929 tests/data/fate/vsynth1-flashsv.flv
 791e1fb999deb2e4156e2286d48c4ed1 *tests/data/fate/vsynth1-flashsv.out.rawvideo
 stddev:    2.84 PSNR: 39.04 MAXDIFF:   49 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth1-mpng b/tests/ref/vsynth/vsynth1-mpng
index 9b394d7629..f9934ae0a0 100644
--- a/tests/ref/vsynth/vsynth1-mpng
+++ b/tests/ref/vsynth/vsynth1-mpng
@@ -1,4 +1,4 @@
-6a27410a07ed1c5556e15b7a7c6a586d *tests/data/fate/vsynth1-mpng.avi
-12158280 tests/data/fate/vsynth1-mpng.avi
+8640f381cd51a877bdecc843614dc6c2 *tests/data/fate/vsynth1-mpng.avi
+12154446 tests/data/fate/vsynth1-mpng.avi
 93695a27c24a61105076ca7b1f010bbd *tests/data/fate/vsynth1-mpng.out.rawvideo
 stddev:    3.42 PSNR: 37.44 MAXDIFF:   48 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth1-zlib b/tests/ref/vsynth/vsynth1-zlib
index 419c6a6b3a..0f25f1d94c 100644
--- a/tests/ref/vsynth/vsynth1-zlib
+++ b/tests/ref/vsynth/vsynth1-zlib
@@ -1,4 +1,4 @@
-fd44e7bf6322f4be46f4f0dada728849 *tests/data/fate/vsynth1-zlib.avi
-12108636 tests/data/fate/vsynth1-zlib.avi
+e0711c763528a43a3aa3aa07423daca5 *tests/data/fate/vsynth1-zlib.avi
+12104740 tests/data/fate/vsynth1-zlib.avi
 93695a27c24a61105076ca7b1f010bbd *tests/data/fate/vsynth1-zlib.out.rawvideo
 stddev:    3.42 PSNR: 37.44 MAXDIFF:   48 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-flashsv b/tests/ref/vsynth/vsynth2-flashsv
index 9bda896687..6e754fcdc9 100644
--- a/tests/ref/vsynth/vsynth2-flashsv
+++ b/tests/ref/vsynth/vsynth2-flashsv
@@ -1,4 +1,4 @@
-f4b45770dd93b43b4077532e8ef90bfc *tests/data/fate/vsynth2-flashsv.flv
-11636546 tests/data/fate/vsynth2-flashsv.flv
+6d818931c1d7e58961b76e5dee3134de *tests/data/fate/vsynth2-flashsv.flv
+11636008 tests/data/fate/vsynth2-flashsv.flv
 7f0fc12c02e68faddc153e69ddd6841c *tests/data/fate/vsynth2-flashsv.out.rawvideo
 stddev:    1.20 PSNR: 46.52 MAXDIFF:   20 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-mpng b/tests/ref/vsynth/vsynth2-mpng
index e49714a3b0..816c34f235 100644
--- a/tests/ref/vsynth/vsynth2-mpng
+++ b/tests/ref/vsynth/vsynth2-mpng
@@ -1,4 +1,4 @@
-481e2d148f411bb61783aa688ec22943 *tests/data/fate/vsynth2-mpng.avi
-11816978 tests/data/fate/vsynth2-mpng.avi
+a52f1cdc31a4657db811a92ce2e4246c *tests/data/fate/vsynth2-mpng.avi
+12129232 tests/data/fate/vsynth2-mpng.avi
 32fae3e665407bb4317b3f90fedb903c *tests/data/fate/vsynth2-mpng.out.rawvideo
 stddev:    1.54 PSNR: 44.37 MAXDIFF:   17 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth2-zlib b/tests/ref/vsynth/vsynth2-zlib
index 9dfb0d679e..ed4752ed63 100644
--- a/tests/ref/vsynth/vsynth2-zlib
+++ b/tests/ref/vsynth/vsynth2-zlib
@@ -1,4 +1,4 @@
-8d2783483b354e7836cfc45a7241c4eb *tests/data/fate/vsynth2-zlib.avi
-11760520 tests/data/fate/vsynth2-zlib.avi
+8d6afb78d05222b051b4d64e28999c06 *tests/data/fate/vsynth2-zlib.avi
+12074834 tests/data/fate/vsynth2-zlib.avi
 32fae3e665407bb4317b3f90fedb903c *tests/data/fate/vsynth2-zlib.out.rawvideo
 stddev:    1.54 PSNR: 44.37 MAXDIFF:   17 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth3-mpng b/tests/ref/vsynth/vsynth3-mpng
index e708a60d98..efe00193c2 100644
--- a/tests/ref/vsynth/vsynth3-mpng
+++ b/tests/ref/vsynth/vsynth3-mpng
@@ -1,4 +1,4 @@
-3f64b66a1f46e31d45dd7f5514422ed0 *tests/data/fate/vsynth3-mpng.avi
-179804 tests/data/fate/vsynth3-mpng.avi
+389efdaacbde50df890b31da7cf9c345 *tests/data/fate/vsynth3-mpng.avi
+179632 tests/data/fate/vsynth3-mpng.avi
 693aff10c094f8bd31693f74cf79d2b2 *tests/data/fate/vsynth3-mpng.out.rawvideo
 stddev:    3.67 PSNR: 36.82 MAXDIFF:   43 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth3-zlib b/tests/ref/vsynth/vsynth3-zlib
index 55d65f30e0..98b1b5a2e9 100644
--- a/tests/ref/vsynth/vsynth3-zlib
+++ b/tests/ref/vsynth/vsynth3-zlib
@@ -1,4 +1,4 @@
-d3705acfc90b16968d0d4a3ac56b049c *tests/data/fate/vsynth3-zlib.avi
-174882 tests/data/fate/vsynth3-zlib.avi
+3bc617b07bee6a3cbe92048ea08670a2 *tests/data/fate/vsynth3-zlib.avi
+174760 tests/data/fate/vsynth3-zlib.avi
 693aff10c094f8bd31693f74cf79d2b2 *tests/data/fate/vsynth3-zlib.out.rawvideo
 stddev:    3.67 PSNR: 36.82 MAXDIFF:   43 bytes:    86700/    86700
diff --git a/tests/ref/vsynth/vsynth_lena-flashsv
b/tests/ref/vsynth/vsynth_lena-flashsv
index 52046cdf2e..ced0ba51d5 100644
--- a/tests/ref/vsynth/vsynth_lena-flashsv
+++ b/tests/ref/vsynth/vsynth_lena-flashsv
@@ -1,4 +1,4 @@
-0667077971e0cb63b5f49c580006e90e *tests/data/fate/vsynth_lena-flashsv.flv
-12368953 tests/data/fate/vsynth_lena-flashsv.flv
+df93e44f126a0dab10184cacca0c6d26 *tests/data/fate/vsynth_lena-flashsv.flv
+12352215 tests/data/fate/vsynth_lena-flashsv.flv
 3a984506f1ebfc9fb73b6814cab201cc
*tests/data/fate/vsynth_lena-flashsv.out.rawvideo
 stddev:    0.66 PSNR: 51.73 MAXDIFF:   14 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth_lena-mpng
b/tests/ref/vsynth/vsynth_lena-mpng
index 20258433b0..db3765c8c7 100644
--- a/tests/ref/vsynth/vsynth_lena-mpng
+++ b/tests/ref/vsynth/vsynth_lena-mpng
@@ -1,4 +1,4 @@
-319ca02f8465a9c53128442f4b0dd528 *tests/data/fate/vsynth_lena-mpng.avi
-12558334 tests/data/fate/vsynth_lena-mpng.avi
+bd4e8efb421b616b13642eb8a3d27df6 *tests/data/fate/vsynth_lena-mpng.avi
+13084742 tests/data/fate/vsynth_lena-mpng.avi
 98d0e2854731472c5bf13d8638502d0a *tests/data/fate/vsynth_lena-mpng.out.rawvideo
 stddev:    1.26 PSNR: 46.10 MAXDIFF:   13 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth/vsynth_lena-zlib
b/tests/ref/vsynth/vsynth_lena-zlib
index 009bcad853..431121c629 100644
--- a/tests/ref/vsynth/vsynth_lena-zlib
+++ b/tests/ref/vsynth/vsynth_lena-zlib
@@ -1,4 +1,4 @@
-abbfccc551b173a357024d8392de21dd *tests/data/fate/vsynth_lena-zlib.avi
-12517180 tests/data/fate/vsynth_lena-zlib.avi
+5f2d9bc48c8f0797eea1f9a8bcc51202 *tests/data/fate/vsynth_lena-zlib.avi
+13045134 tests/data/fate/vsynth_lena-zlib.avi
 98d0e2854731472c5bf13d8638502d0a *tests/data/fate/vsynth_lena-zlib.out.rawvideo
 stddev:    1.26 PSNR: 46.10 MAXDIFF:   13 bytes:  7603200/  7603200

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