diff --git a/pages/pages.txt b/pages/pages.txt
index 26472364f..3e4f3b46c 100644
--- a/pages/pages.txt
+++ b/pages/pages.txt
@@ -1,10 +1,50 @@
 Monday 8-30 - 412 !!!
 
-Anna Yakovlevna
-1-st husb crestil Sergeya/Svenu
-pr-t Okt 14-39 3 floor
-20-66-02
-29-361-31-25
+good yuv420p
+need yuv44p
+color space
+https://habr.com/ru/articles/575914/
+https://stackoverflow.com/questions/2869281/how-to-determine-video-codec-of-a-file-with-ffmpeg
+    ffmpeg -i file.avi
+https://discussion.fedoraproject.org/t/cleanest-way-to-install-all-video-codecs-on-fedora-kde-40/134005
+
+good
+Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'ch_webinar_2.mp4':
+  Metadata:
+    major_brand     : mp42
+    minor_version   : 0
+    compatible_brands: isommp42
+    creation_time   : 2024-05-03T22:49:38.000000Z
+  Duration: 02:42:44.64, start: 0.000000, bitrate: 999 kb/s
+  Stream #0:0[0x1](eng): Video: h264 (libopenh264) (High) (avc1 / 0x31637661), yuv420p(progressive), 2540x1250, 903 kb/s, 15 fps, 15 tbr, 30k tbn (default)
+      Metadata:
+        creation_time   : 2024-05-03T22:49:38.000000Z
+        handler_name    : Mainconcept MP4 Video Media Handler
+        vendor_id       : [0][0][0][0]
+        encoder         : AVC Coding
+  Stream #0:1[0x2](eng): Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 93 kb/s (default)
+      Metadata:
+        creation_time   : 2024-05-03T22:49:38.000000Z
+        handler_name    : Mainconcept MP4 Sound Media Handler
+        vendor_id       : [0][0][0][0]
+
+bad
+Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'ch_webinar_1.mp4':
+  Metadata:
+    major_brand     : isom
+    minor_version   : 512
+    compatible_brands: isomiso2avc1mp41
+    encoder         : Lavf60.11.100
+  Duration: 02:47:21.17, start: 0.000000, bitrate: 210 kb/s
+  Stream #0:0[0x1](und): Video: h264 (libopenh264) (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720, 104 kb/s, SAR 8001:8000 DAR 889:500, 15.17 fps, 25 tbr, 1000k tbn (default)
+      Metadata:
+        handler_name    : VideoHandler
+        vendor_id       : [0][0][0][0]
+        encoder         : Lavc60.26.100 libx264
+  Stream #0:1[0x2](und): Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 100 kb/s (default)
+      Metadata:
+        handler_name    : SoundHandler
+        vendor_id       : [0][0][0][0]
 
 kc - 76 of ...
 kina2 - 37 of 8xx (?1.2.5)