JeremyG 20 Posted November 19, 2023 Share Posted November 19, 2023 (edited) A little background, both NYC and Philadelphia had ABC on VHF only and I was unable to receive. A couple months ago Philly went live with ATSC 3, and while most are DRM, luckily ABC is not. Channel 106.1 WPVI-HD I think emby might be handling something poorly while recording this channel , because when I watch recorded video on my Roku ultra the performance is very slow. It literally takes like 5-10 seconds to start the stream, and then sometimes pauses for buffering during playback for another 5-10 seconds (usually only once or twice during a half hour show). The reason this seems strange to me, is that I have no problems with any other content streaming to this Roku Ultra, as almost every format is natively supported with no transcoding, if anything sometimes audio needs to be transcoded if it's only in TrueHD. Could the 8 text streams be messing with it somehow? Below is log file of transcoding session, and MediaInfo readout of the recorded .TS file. Server/Hardware: HDHomeRun Flex 4K Windows 11 Core i3 10th Gen 16 GB RAM Nvidia 1050 GPU Transcoding disk is a Samsung 850 Pro (SATA, but still shouldn't have any speed issues, I'm the only user of this server) JeopardyStream-RokuUltra.txt Edited November 19, 2023 by JeremyG Link to comment Share on other sites More sharing options...
ebr 14948 Posted November 19, 2023 Share Posted November 19, 2023 Hi. As a test, can you convert the file to a MKV without changing anything else and see if that makes a difference? I'm thinking it may just be the Roku or connection having trouble with HEVC in a TS container. Link to comment Share on other sites More sharing options...
JeremyG 20 Posted November 20, 2023 Author Share Posted November 20, 2023 Yea I will try that later tonight or tomorrow... But even if that's the case... my concern is why is the transcoding behaving badly?. If I took a full on 2160p movie, and forced transcoding, it would start to play in only a second or two, and never pause/lock-up through the whole movie. Link to comment Share on other sites More sharing options...
Luke 37179 Posted November 20, 2023 Share Posted November 20, 2023 Your example is actually not transcoding the video. It's copying the original video stream as-is. It could just be that the Roku is having trouble with the hevc stream. Retrying it as an mkv would provide some useful data though. Link to comment Share on other sites More sharing options...
JeremyG 20 Posted November 20, 2023 Author Share Posted November 20, 2023 For some reason none of my software would properly copy the audio stream of those .ts files into an MKV container. Kinda weird I've done it many times (usually to strip out unneeded audio streams) so i know how to do it....but Xmedia Recode just plain wouldn't let me copy the audio. But I did copy the video portion into an MKV and it played instantly on Roku. So, I guess Roku could be choking on the .TS...or maybe there is actually something wrong with the audio? Link to comment Share on other sites More sharing options...
JeremyG 20 Posted November 20, 2023 Author Share Posted November 20, 2023 Video worked fine... Audio ...the "add" arrow-button is just greyed out...its like it doesnt see any audio or something. Link to comment Share on other sites More sharing options...
JeremyG 20 Posted November 20, 2023 Author Share Posted November 20, 2023 I don't know how to really try this with FFPMEG on the command line, but I did just run FFProbe on the .ts file. After some "Error Parsing NAL #4" i got this at the end: Unsupported codec? Input #0, mpegts, from 'D:\Jeopardy! S39E24.ts': Duration: 00:29:45.42, start: 18314.994900, bitrate: 4361 kb/s Program 3 Stream #0:0[0x31]: Video: hevc (Main 10) ([36][0][0][0] / 0x0024), yuv420p10le(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 59.94 fps, 59.94 tbr, 90k tbn Stream #0:1[0x32](eng): Data: bin_data (AC-4 / 0x342D4341) Stream #0:2[0x39](eng): Data: bin_data (STPP / 0x50505453) Stream #0:3[0x33](spa): Data: bin_data (AC-4 / 0x342D4341) Unsupported codec with id 98314 for input stream 1 Unsupported codec with id 98314 for input stream 2 Unsupported codec with id 98314 for input stream 3 Link to comment Share on other sites More sharing options...
Luke 37179 Posted November 20, 2023 Share Posted November 20, 2023 The upcoming 4.8 release will have improved support for ac4 audio. 2 Link to comment Share on other sites More sharing options...
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