230096 2021-09-09 07:10:50 -0700 [GStreamer] Videos from Twitter can't be read 2022-04-10 10:47:12 -0700 1 1 1 Unclassified WebKit WebKitGTK WebKit Nightly Build PC Linux RESOLVED FIXED InRadar P2 Normal --- 1 sunnlife webkit-unassigned andresg_22 bugs-noreply mcatanzaro pnormand webkit-bug-importer oldest_to_newest 1791883 0 sunnlife 2021-09-09 07:10:50 -0700 Hello, I'm on ubuntu 20.04 LTS and I installed Tangram via Flatpak. When I'm on Twitter some videos (like this one: https://twitter.com/i/status/1435941570323238912) can't be read... I tried on Gnome Web and I have the same problem (not on firefox) I installed GStreamer and gst-libav as advised on this post (https://bugs.webkit.org/show_bug.cgi?id=162133) but the problem persists... Can you help me please Thanks Alex 1791884 1 webkit-bug-importer 2021-09-09 07:11:00 -0700 <rdar://problem/82923221> 1792675 2 pnormand 2021-09-11 04:08:31 -0700 The Tangram runtime has gst 1.16.3, which seems to not work very well in WebKit: 0:00:01.939132655 2 0x55d20c2ebde0 WARN hlsdemux gsthlsdemux.c:840:gst_hls_demux_handle_buffer:<hlsdemux0> error: Could not determine type of stream ** (WebKitWebProcess:2): CRITICAL **: 10:35:10.583: gst_hls_demux_change_playlist: assertion 'adaptive_demux->streams != NULL' failed 0:00:01.955429658 2 0x55d20be53750 ERROR webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1781:handleMessage: Error 4: Could not determine type of stream (url=https://video.twimg.com/ext_tw_video/1435941461682389000/pu/pl/lzpeFNrCTgtgqvW6.m3u8?tag=12&container=fmp4&descending=true) 0:00:01.955471546 2 0x55d20be53750 ERROR webkitmediaplayer MediaPlayerPrivateGStreamer.cpp:1794:handleMessage: Decode error, let the Media element emit a stalled event. 0:00:02.216527955 2 0x55d20c2f1920 WARN codecparsers_mpegvideo gstmpegvideoparser.c:861:gst_mpeg_video_packet_parse_picture_header: Unsupported picture type : 5 0:00:02.216602293 2 0x55d20c2f1920 WARN codecparsers_mpegvideo gstmpegvideoparser.c:861:gst_mpeg_video_packet_parse_picture_header: Unsupported picture type : 0 0:00:02.216623731 2 0x55d20c2f1920 WARN codecparsers_mpegvideo gstmpegvideoparser.c:367:gst_mpeg_video_packet_parse_sequence_header: Failed to parse sequence header 0:00:02.216969560 2 0x55d20c2f1920 WARN codecparsers_mpegvideo gstmpegvideoparser.c:861:gst_mpeg_video_packet_parse_picture_header: Unsupported picture type : 0 Tangram should upgrade to gst 1.18, it's easy to do with flatpak. The Epiphany.Devel flatpak plays this video fine. 1860127 3 pnormand 2022-04-10 10:47:12 -0700 https://twitter.com/i/status/1435941570323238912 plays fine in Tangram now (they updated to gst 1.18)