TroyBennett 9 Posted October 30, 2015 Share Posted October 30, 2015 (edited) Comcast recently switched to mp4 for their HD content making some tuners/tuner software obsolete, however I understand the HD Homerun Prime still works with this. Does Emby's build in tuner software have the ability to work with this as well? can it record? I have a ceton 6 tuner so i have no access to hd channels now and so I'm looking for a replacement that will work for me. Any suggestions welcome. Thanks, Troy Bennett Edited October 30, 2015 by TroyBennett Link to comment Share on other sites More sharing options...
Luke 37050 Posted October 30, 2015 Share Posted October 30, 2015 yes, should be fine. 1 Link to comment Share on other sites More sharing options...
tigrao 18 Posted February 19, 2016 Share Posted February 19, 2016 I've been testing the new MPEG4 format on Comcast for more than a month now. About 40 of my 110 HD channels have been changed to MPEG4. Live and recorded TV on Windows Media Center is working properly. Emby plays recorded wtv files just fine, but it really struggles with live TV playback. I don't know if it is a limitation of ffmpeg where it is expecting an MPEG2 stream or if something else is going on. Sometimes I can get live TV to play for a few seconds, but then it freezes and never starts again. The ffmpeg processes are orphaned and continue to run on the server. The behavior seems to be consistent across all operating systems, browsers, and the iOS Emby app. The behavior is also consistent using the serverwmc plugin or the built-in Emby live TV plugin. Hopefully someone can see what's going on and it is an easy fix. Here's the latest server log and transcoding log: server-63591482878.txt transcode-debaf02d-4409-4268-91d2-c58b4516435a.txt Link to comment Share on other sites More sharing options...
tigrao 18 Posted February 23, 2016 Share Posted February 23, 2016 I have been doing more research on this. 48 of my HD channels have been converted to the H264 format. It seems like many of them will stream fine on Emby. I think I discovered the problem, but I don't know how to solve it. Using ffprobe I got additional information that may be helpful. The channels that work look like this: index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=High codec_type=video codec_time_base=1001/120000 codec_tag_string=[27][0][0][0] codec_tag=0x001b width=1280 height=720 coded_width=1280 coded_height=720 The channels that don't work look like this: index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=High codec_type=video codec_time_base=1001/60000 codec_tag_string=[0][0][0][0] codec_tag=0x0000 width=1920 height=1080 coded_width=1920 coded_height=1088 Notice the difference in the codec_tag and codec_tag_string. Is this information that is coming from Comcast the problem? Does there need to be a codec tag for Emby to be able to stream the channels? Link to comment Share on other sites More sharing options...
ebr 14910 Posted February 23, 2016 Share Posted February 23, 2016 Are the ones that don't work also all 1080i channels? Link to comment Share on other sites More sharing options...
tigrao 18 Posted February 23, 2016 Share Posted February 23, 2016 (edited) Are the ones that don't work also all 1080i channels? No, here's another that doesn't work... the National Geographic Channel: index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=High codec_type=video codec_time_base=1001/120000 codec_tag_string=[0][0][0][0] codec_tag=0x0000 width=1280 height=720 coded_width=1280 coded_height=720 Usually what happens is that it takes a really long time (like one minute) for Emby to show a still of the channel. After that I get about five seconds of playback and then the playback freezes and never resumes again. So far it seems to be consistent with the H264 channels that do not have the codec_tag or codec__tag_string values set as anything but zero values. I just noticed that some of the MPEG2 format channels have zero values as well, but these channels have never been a problem for Emby to stream live. Edited February 23, 2016 by tigrao Link to comment Share on other sites More sharing options...
DiscoLives4ever 0 Posted February 25, 2016 Share Posted February 25, 2016 I've been running into the same issue, posted here: http://emby.media/community/index.php?/topic/31135-watching-live-tv-stops-after-a-few-seconds/ Link to comment Share on other sites More sharing options...
tigrao 18 Posted March 12, 2016 Share Posted March 12, 2016 All of my channels seem to be working now. I don't know if Comcast changed something on their end or if ffmpeg was updated. All of my channels now have a non-zero codec string and codec tag. [STREAM] index=0 codec_name=h264 codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 profile=High codec_type=video codec_time_base=1001/60000 codec_tag_string=[27][0][0][0] codec_tag=0x001b width=1920 height=1080 coded_width=1920 coded_height=1088 Link to comment Share on other sites More sharing options...
tigrao 18 Posted March 23, 2016 Share Posted March 23, 2016 I don't get this. Some days all the channels work fine in Emby and other days they do not. For example, CNN is not working today. It is back to having a codec_tag_string and codec_tag of all zeros. Why would the data from Comcast be constantly changing? Is there no way for ffmpeg to compensate for this? Link to comment Share on other sites More sharing options...
Luke 37050 Posted March 23, 2016 Share Posted March 23, 2016 I don't get this. Some days all the channels work fine in Emby and other days they do not. For example, CNN is not working today. It is back to having a codec_tag_string and codec_tag of all zeros. Why would the data from Comcast be constantly changing? Is there no way for ffmpeg to compensate for this? Hi there, welcome. In order to best help you, please see how to report a media playback issue. Thanks! Link to comment Share on other sites More sharing options...
tigrao 18 Posted April 18, 2016 Share Posted April 18, 2016 I got a Schedules Direct account and switched from using the ServerWMC plugin to using EmbyTV. This problem seems to be resolved using EmbyTV on 5930. 1 Link to comment Share on other sites More sharing options...
DiscoLives4ever 0 Posted April 19, 2016 Share Posted April 19, 2016 (edited) I got a Schedules Direct account and switched from using the ServerWMC plugin to using EmbyTV. This problem seems to be resolved using EmbyTV on 5930. I just tested with 5930 and I'm still having the same issue. CNN will run around 8 seconds before it freezes. Looking at logs, the biggest difference between an MPEG2 and MP4 channel are several entries similar to this: [h264 @ 0000021944e786e0] no frame! [h264 @ 0000021944e786e0] non-existing SPS 0 referenced in buffering period [h264 @ 0000021944e786e0] non-existing PPS 0 referenced [h264 @ 0000021944e786e0] non-existing SPS 0 referenced in buffering period [h264 @ 0000021944e786e0] non-existing PPS 0 referenced [h264 @ 0000021944e786e0] decode_slice_header error Edited April 19, 2016 by DiscoLives4ever Link to comment Share on other sites More sharing options...
tigrao 18 Posted April 19, 2016 Share Posted April 19, 2016 (edited) I just tested with 5930 and I'm still having the same issue. CNN will run around 8 seconds before it freezes. Yeah, I jumped the gun. Today CNN is also not working for me. I think it depends on the program that is currently airing. Sometimes it works and sometimes it doesn't. Other MPEG4 channels work fine for me though. Fox Sports 1, for example, always works for me. It has the same log entries as CNN so that can't be the problem. Here's my FS1 and CNN transcode logs: transcode-fs1.txt transcode-cnn.txt Edited April 19, 2016 by tigrao Link to comment Share on other sites More sharing options...
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