home
products
contribute
download
documentation
forum
Home
Forums
New posts
Search forums
What's new
New posts
All posts
Latest activity
Members
Registered members
Current visitors
Donate
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Search titles only
By:
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
MediaPortal 1
Support
General Support
Crashing on some IPTV channels
Contact us
RSS
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Owlsroost" data-source="post: 1259545" data-attributes="member: 83973"><p>I've spent some time investigating the issue.</p><p></p><p>The problem appears to be caused by missing or corrupted PCR timestamps in the file (which is why the duration of the file looks wrong e.g. 1.6 seconds instead of the actual 2 minutes 9 seconds. The file data from Mediainfo:</p><p></p><p>[code]General</p><p>ID : 4 (0x4)</p><p>Complete name : D:\Video\TV Server\Movie - US _ HBO 2 - 2019-03-13_1.ts</p><p>Format : MPEG-TS</p><p>File size : 80.2 MiB</p><p>Duration : 1 s 600 ms</p><p>Overall bit rate mode : Variable</p><p>Overall bit rate : 417 Mb/s</p><p></p><p>Video</p><p>ID : 48 (0x30)</p><p>Menu ID : 137 (0x89)</p><p>Format : AVC</p><p>Format/Info : Advanced Video Codec</p><p>Format profile : Main@L3.1</p><p>Format settings : CABAC / 1 Ref Frames</p><p>Format settings, CABAC : Yes</p><p>Format settings, RefFrames : 1 frame</p><p>Format settings, GOP : M=1, N=60</p><p>Codec ID : 27</p><p>Duration : 2 min 9 s</p><p>Width : 1 280 pixels</p><p>Height : 720 pixels</p><p>Display aspect ratio : 16:9</p><p>Color space : YUV</p><p>Chroma subsampling : 4:2:0</p><p>Bit depth : 8 bits</p><p>Scan type : Progressive</p><p>Color range : Full</p><p>Color primaries : BT.709</p><p>Transfer characteristics : BT.709</p><p>Matrix coefficients : BT.709</p><p></p><p>Audio</p><p>ID : 64 (0x40)</p><p>Menu ID : 137 (0x89)</p><p>Format : AAC</p><p>Format/Info : Advanced Audio Codec</p><p>Format version : Version 4</p><p>Format profile : LC</p><p>Muxing mode : ADTS</p><p>Codec ID : 15</p><p>Duration : 2 min 8 s</p><p>Bit rate mode : Variable</p><p>Channel(s) : 2 channels</p><p>Channel positions : Front: L R</p><p>Sampling rate : 48.0 kHz</p><p>Frame rate : 46.875 FPS (1024 SPF)</p><p>Compression mode : Lossy</p><p>Delay relative to video : -101 ms</p><p></p><p>[/code]</p><p></p><p>Note the video and audio stream durations (based on the presentation timestamps) are correct, but the 'general' duration (based on PCR timestamps) is only 1.6 seconds.</p><p></p><p>MP uses the 'general' PCR timestamps to determine the file duration and also when seeking in the file (for skip steps and fast-forward/rewind) - so not having correct ones is fairly fundamental.</p><p></p><p>I'm pretty sure this mismatch is causing the playback problems (both with MP and in Windows media player etc.) - basically in MP it appears to stop fetching data from the file after a while (so it freezes), but I haven't worked out why (yet).</p><p></p><p>So no fix yet, but some progress.</p></blockquote><p></p>
[QUOTE="Owlsroost, post: 1259545, member: 83973"] I've spent some time investigating the issue. The problem appears to be caused by missing or corrupted PCR timestamps in the file (which is why the duration of the file looks wrong e.g. 1.6 seconds instead of the actual 2 minutes 9 seconds. The file data from Mediainfo: [code]General ID : 4 (0x4) Complete name : D:\Video\TV Server\Movie - US _ HBO 2 - 2019-03-13_1.ts Format : MPEG-TS File size : 80.2 MiB Duration : 1 s 600 ms Overall bit rate mode : Variable Overall bit rate : 417 Mb/s Video ID : 48 (0x30) Menu ID : 137 (0x89) Format : AVC Format/Info : Advanced Video Codec Format profile : Main@L3.1 Format settings : CABAC / 1 Ref Frames Format settings, CABAC : Yes Format settings, RefFrames : 1 frame Format settings, GOP : M=1, N=60 Codec ID : 27 Duration : 2 min 9 s Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Color range : Full Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 64 (0x40) Menu ID : 137 (0x89) Format : AAC Format/Info : Advanced Audio Codec Format version : Version 4 Format profile : LC Muxing mode : ADTS Codec ID : 15 Duration : 2 min 8 s Bit rate mode : Variable 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 : -101 ms [/code] Note the video and audio stream durations (based on the presentation timestamps) are correct, but the 'general' duration (based on PCR timestamps) is only 1.6 seconds. MP uses the 'general' PCR timestamps to determine the file duration and also when seeking in the file (for skip steps and fast-forward/rewind) - so not having correct ones is fairly fundamental. I'm pretty sure this mismatch is causing the playback problems (both with MP and in Windows media player etc.) - basically in MP it appears to stop fetching data from the file after a while (so it freezes), but I haven't worked out why (yet). So no fix yet, but some progress. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
MediaPortal 1
Support
General Support
Crashing on some IPTV channels
Contact us
RSS
Top
Bottom