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

[Peter Bennett]

On 03/11/2018 05:25 AM, Andrew Wilkinson wrote:
>
> On Sun, 11 Mar 2018 at 01:04, Peter Bennett <pb.mythtv at gmail.com 
> <mailto:pb.mythtv at gmail.com>> wrote:
>
>
>
>     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
>
>     Peter
>     _______________________________________________Thanks for the
>     reply Peter. This is running on my Raspberry Pi, and I'm using the
>     OpenMax High Quality profile. 
>
>
> Cheers,
> Andrew
>
Please open a ticket and supply a sample video so that I can look into 
it. Set the component in the ticket as Ports - rpi. You can extract the 
first 100MB of video using a command like this (see below). Put the 
video on dropbox or some site where I can download it.

dd bs=1MB count=100 if=3763_20161107030000.ts of=extracted_with_dd.ts

Peter
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