[mythtv-users] Could not open decoder error on some videos

Peter Bennett pb.mythtv at gmail.com
Sun Mar 11 01:03:42 UTC 2018

On 03/10/2018 05:08 PM, Andrew Wilkinson wrote:
> Hi,
> I recently upgraded to MythTV 29 and mostly it’s worked fine, but one issue that I have is some of my videos (not recordings) don’t play any more. There is a black “Please wait” screen then it goes back to the menu with a “Could not open decoder” error message. I’ve included the relevant log lines from the frontend below.
> 2018-03-10 22:03:05.805560 I  TV::TV(): Creating TV object
> 2018-03-10 22:03:06.043987 N  Suspending idle timer
> 2018-03-10 22:03:06.064876 I  TV::Init(): Created TvPlayWindow.
> 2018-03-10 22:03:06.186015 I  TV::HandleStateChange(): Attempting to change from None to WatchingVideo
> 2018-03-10 22:03:06.783428 N  AudioPlayer: Enabling Audio
> 2018-03-10 22:03:07.722608 I  AFD: codec AAC has 2 channels
> 2018-03-10 22:03:07.726779 I  AFD: Opened codec 0x2f17af0, id(AAC) type(Audio)
> 2018-03-10 22:03:07.770945 I  DOMX:0 Installed h264_mp4toannexb filter
> 2018-03-10 22:03:07.793047 E  AFD: Could not open codec 0x2f14600, id(H264) type(Video) ignoring. reason Invalid data found when processing input
> 2018-03-10 22:03:07.793155 E  Couldn't open decoder for: myth://Videos@tv/Kids/Chuggington/Series 4/S4E15 Snow Patrol.mp4
> 2018-03-10 22:03:07.793206 E  Player(0): Unable to open video file.
> 2018-03-10 22:03:07.793220 E  playCtx: StartPlaying() Failed to start player
> 2018-03-10 22:03:07.793259 C  TV::StartPlayer(): Failed to create player.
> It seems to be saying that the file is invalid, but it plays correctly other players, and MythTV 0.28. Is anyone aware of any changes that might have caused this? Is there anything I can do to get these files to play? I was considering reencoding them, but I’d rather not reencode already encoded files.
> Thanks is advance for any help,
> Andrew
> _______________________________________________
Let me know what playback profile you are using.

There are some problems of this type on Master and I have made a fix for 
them, but I was not aware of this on version 29


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