Oh, this is me again :/ While trying just-encoded vc2 mkv in CinGG I encountered those errors/warnings: root@slax:/usr/share/cin/ffmpeg/video# cin Cinelerra Infinity - built: Mar 14 2020 01:25:13 git://git.cinelerra-gg.org/goodguy/cinelerra.git (c) 2006-2019 Heroine Virtual Ltd. by Adam Williams 2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy Cinelerra is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for Cinelerra. IndexFile::draw_index: index has 0 zoom IndexFile::draw_index: index has 0 zoom IndexFile::draw_index: index has 0 zoom IndexFile::draw_index: index has 0 zoom ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.pcm.dmix.channels' ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: Нет такого файла или каталога ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: Нет такого файла или каталога ALSA lib pcm.c:2564:(snd_pcm_open_noupdate) Unknown PCM dmix:SB AudioALSA::open_output default: Нет такого файла или каталога FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv ** seek fail 19, 633 FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv ** seek fail 75, 2502 FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv ** seek fail 83, 2769 ** seek fail 173, 5772 ** seek fail 242, 8074 ** seek fail 2, 66 ** seek fail 4, 133 ** seek fail 5, 166 ** seek fail 6, 200 ** seek fail 7, 233 ** seek fail 9, 300 ** seek fail 10, 333 ** seek fail 11, 367 ** seek fail 12, 400 ** seek fail 14, 467 ** seek fail 15, 500 ** seek fail 16, 533 ** seek fail 17, 567 ** seek fail 19, 633 ** seek fail 20, 667 ** seek fail 21, 700 ** seek fail 22, 734 ** seek fail 24, 800 ** seek fail 25, 834 ** seek fail 26, 867 ** seek fail 27, 900 ** seek fail 29, 967 ** seek fail 30, 1001 ** seek fail 31, 1034 ** seek fail 32, 1067 ** seek fail 34, 1134 ** seek fail 35, 1167 ** seek fail 36, 1201 ** seek fail 37, 1234 ** seek fail 39, 1301 ** seek fail 40, 1334 ** seek fail 41, 1368 ** seek fail 42, 1401 ** seek fail 44, 1468 ** seek fail 45, 1501 ** seek fail 46, 1534 ** seek fail 47, 1568 ** seek fail 49, 1634 ** seek fail 50, 1668 ** seek fail 51, 1701 ** seek fail 52, 1735 ** seek fail 54, 1801 ** seek fail 55, 1835 ** seek fail 56, 1868 ** seek fail 57, 1901 ** seek fail 59, 1968 ** seek fail 60, 2002 ** seek fail 61, 2035 ** seek fail 62, 2068 ** seek fail 64, 2135 ** seek fail 65, 2168 ** seek fail 66, 2202 ** seek fail 67, 2235 ** seek fail 69, 2302 ** seek fail 70, 2335 ** seek fail 71, 2369 ** seek fail 72, 2402 ** seek fail 74, 2469 ** seek fail 75, 2502 ** seek fail 76, 2535 ** seek fail 77, 2569 ** seek fail 79, 2635 ** seek fail 80, 2669 ** seek fail 81, 2702 ** seek fail 82, 2736 ** seek fail 84, 2802 ** seek fail 85, 2836 ** seek fail 86, 2869 ** seek fail 87, 2902 ** seek fail 89, 2969 ** seek fail 90, 3003 ** seek fail 91, 3036 ** seek fail 92, 3069 ** seek fail 94, 3136 ** seek fail 95, 3169 ** seek fail 96, 3203 ** seek fail 97, 3236 ** seek fail 99, 3303 ** seek fail 100, 3336 ** seek fail 101, 3370 ** seek fail 102, 3403 ** seek fail 104, 3470 ** seek fail 105, 3503 ** seek fail 106, 3536 ** seek fail 107, 3570 ** seek fail 109, 3636 ** seek fail 110, 3670 ** seek fail 111, 3703 FFMPEG::open_decoder: some stream times estimated: /dev/shm/new_test-vc2_yuv420_8bit.mkv ** seek fail 4, 133 ** seek fail 32, 1067 ** seek fail 46, 1534 ** seek fail 60, 2002 ** seek fail 88, 2936 ** seek fail 102, 3403 ** seek fail 116, 3870 ** seek fail 157, 5238 ** seek fail 214, 7140 ** seek fail 269, 8975 ** seek fail 8, 266 ** seek fail 11, 367 ** seek fail 14, 467 ** seek fail 22, 734 ** seek fail 25, 834 ** seek fail 29, 967 ** seek fail 36, 1201 ** seek fail 39, 1301 ** seek fail 43, 1434 ** seek fail 50, 1668 ** seek fail 53, 1768 ** seek fail 57, 1901 ** seek fail 64, 2135 ** seek fail 66, 2202 ** seek fail 71, 2369 ** seek fail 78, 2602 ** seek fail 81, 2702 ** seek fail 85, 2836 ** seek fail 92, 3069 ** seek fail 95, 3169 ** seek fail 99, 3303 ** seek fail 106, 3536 ** seek fail 109, 3636 ** seek fail 113, 3770 ** seek fail 120, 4004 ** seek fail 123, 4104 ** seek fail 127, 4237 ** seek fail 134, 4471 ** seek fail 137, 4571 ** seek fail 141, 4704 ** seek fail 144, 4804 ** seek fail 148, 4938 ** seek fail 151, 5038 ** seek fail 155, 5171 ** seek fail 162, 5405 ** seek fail 165, 5505 ** seek fail 169, 5638 ** seek fail 172, 5739 ** seek fail 176, 5872 ** seek fail 179, 5972 ** seek fail 183, 6106 ** seek fail 189, 6306 ** seek fail 193, 6439 ** seek fail 197, 6573 ** seek fail 200, 6673 ** seek fail 204, 6806 ** seek fail 207, 6906 ** seek fail 211, 7040 ** seek fail 218, 7273 ** seek fail 221, 7374 ** seek fail 225, 7507 ** seek fail 228, 7607 ** seek fail 232, 7741 ** seek fail 235, 7841 ** seek fail 239, 7974 ** seek fail 246, 8208 ** seek fail 249, 8308 ** seek fail 253, 8441 ** seek fail 256, 8541 ** seek fail 260, 8675 ** seek fail 263, 8775 ** seek fail 267, 8908 ** seek fail 274, 9142 ** seek fail 277, 9242 ** seek fail 281, 9376 Session time: 0:33:20 Cpu time: user: 0:01:00.374 sys: 0:00:31.212 It seems those thumbnail generating seeks fail after first keyframe? I see first few images on timeline and then they all become black :/ Still, image in compositor is OK! Ah, and wanted to report my weird bug with single click registering as doubleclick is gone! Hopefully, it was just local glitch - no need to track this down, at least!