[mythtv-users] Internal player won't play video streamed to file on my MythTV system

Mark Perkins perkins1724 at hotmail.com
Sat Nov 17 01:46:56 UTC 2018



On 17 November 2018 6:18:47 am James Miller <gajs-f0el at dea.spamcon.org> wrote:

> This post refers to a MythTV 0.28 BE/FE installation that runs under
> Gentoo. I sometimes "record" on this system a video/audio stream from the
> internet (rtmp) by using mplayer -dumpstream -dumpfile myfile.flv
> rtmp://target.URL (not sure if I'm assigning the right extension for this
> file). mplayer is able to play back the resulting file just fine on this
> system, btw.
>
> But I can't if, say, I copy the file to the videos folder, seem to get the
> file to play using MythTV's internal player via the frontend. If, using
> the MythTV frontend interface, I navigate to videos and select the file
> for playback, it appears to start; but the screen just goes black and the
> system seems to freeze for a bit, staying that way until it eventually
> responds to pressing the "escape" key. So I'm trying to discover whether
> there is some way I will be able to play this file using MythTV.
>
> Here's mediainfo output for one such file, in case it will be helpful:
>
> General
> Complete name                            : /var/lib/mythtv/videos/myfile.flv
> Format                                   : Flash Video
> File size                                : 2.16 GiB
> Duration                                 : 11 h 3 min
> Overall bit rate                         : 467 kb/s
> _Server                                  : NGINX RTMP 
> (github.com/arut/nginx-rtmp-module)
> _displayWidth                            : 1280.000
> _displayHeight                           : 720.000
> _fps                                     : 60.000
>
> Video
> Format                                   : AVC
> Format/Info                              : Advanced Video Codec
> Format profile                           : High at L3.1
> Format settings                          : CABAC / 1 Ref Frames
> Format settings, CABAC                   : Yes
> Format settings, ReFrames                : 1 frame
> Codec ID                                 : 7
> Duration                                 : 11 h 3 min
> Bit rate                                 : 4 600 kb/s
> Width                                    : 1 280 pixels
> Height                                   : 720 pixels
> Display aspect ratio                     : 16:9
> Frame rate mode                          : Constant
> Frame rate                               : 60.000 FPS
> Color space                              : YUV
> Chroma subsampling                       : 4:2:0
> Bit depth                                : 8 bits
> Scan type                                : Progressive
> Bits/(Pixel*Frame)                       : 0.083
> Stream size                              : 21.3 GiB
>
> Audio
> Format                                   : AAC
> Format/Info                              : Advanced Audio Codec
> Format profile                           : LC
> Codec ID                                 : 10-2
> Duration                                 : 11 h 3 min
> Bit rate                                 : 125 kb/s
> Channel(s)                               : 2 channels
> Channel positions                        : Front: L R
> Sampling rate                            : 48.0 kHz
> Frame rate                               : 46.875 FPS (1024 SPF)
> Compression mode                         : Lossy
> Delay relative to video                  : -1 s 9 ms
> Stream size                              : 593 MiB (27%)
>
> Some of that information is clearly wrong: duration of this video is
> actually around 1 hour, not 11 hours and some minutes. I'm uncertain what
> "Stream size" under "Video" is supposed to be referring to, but it
> certainly doesn't correlate to the file's size on disk (the file's
> size-on-disk is about 1/10th of the value shown). The "Stream size" item
> under "Audio" also seems way out of proportion.
>
> So, will some sort of re-encoding be required before the internal player
> will play this file? Is some adjustment to the player's settings
> necessary? Tips on things I might do to enable my system to play this file
> using MythTV's internal player via the frontend will be appreciated. It
> would be a lot more convenient to play this sort of file using the MythTV
> interface rather than having to page to a different virtual desktop
> (evilwm) and invoke mplayer from the command line there. Thanks.
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Really need more details about the original stream but can you rework 
things to record direct into mythtv?

https://www.mythtv.org/wiki/User_Manual:Setting_up_HTTP_Live_Streaming_Recorder




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