ATV3 not directly playing video.

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1

Hi all,

 

I have been using plexconnect for a while now with my synology and haven't had a problem until now.

 

I recently bought a new tv that supported hd so i decided to start downloading all my media in 720, some videos play directly but some of the others don't, all my videos come down and are converted to mp4/h264 and aac audio, which are the recommendation of apple.

 

Here is one of the videos that don't play.

 

Media
 
Video Resolution 720p
Duration 43:05
Bitrate 3219 kbps
Width 1280
Height 720
Aspect Ratio 1.78
Container MP4
Video Frame Rate 24p
Web Optimized No
Has 64bit Offsets 0
Part
 
Duration 43:05
File 
Size 992.13 MB
Container MP4
Has 64bit Offsets 0
Web Optimized No
Video
 
Codec H264
Bitrate 2315 kbps
Language English
Bit Depth 8
CABAC 1
Chroma Subsampling 4:2:0
Color Space yuv
Duration 43:05
Frame Rate 23.976 fps
Frame Rate Mode vfr
Has Scaling Matrix 0
Height 720
Level 4.1
Profile high
Ref Frames 9
Scan Type progressive
Stream Identifier 1
Width 1280
Audio
 
Codec AAC
Channels 5.1
Bitrate 899 kbps
Bitrate Mode VBR
Duration 43:05
Profile lc
Sampling Rate 48000 Hz
Stream Identifier 2
 
and the one that plays fine.
 
Media
 
Video Resolution 720p
Duration 43:58
Bitrate 2853 kbps
Width 1280
Height 720
Aspect Ratio 1.78
Container MP4
Video Frame Rate PAL
Web Optimized No
Has 64bit Offsets 0
Part
 
Duration 43:58
File 
Size 897.34 MB
Container MP4
Has 64bit Offsets 0
Web Optimized No
Video
 
Codec H264
Bitrate 2384 kbps
Language English
Bit Depth 8
CABAC 1
Chroma Subsampling 4:2:0
Color Space yuv
Duration 43:58
Frame Rate 25.000 fps
Frame Rate Mode cfr
Has Scaling Matrix 0
Height 720
Level 4.1
Profile high
Ref Frames 5
Scan Type progressive
Width 1280
Audio
 
Codec AAC
Channels Stereo
Bitrate 463 kbps
Bitrate Mode VBR
Duration 43:57
Profile lc
Sampling Rate 48000 Hz
 
 
Running;
Synology DSM 5.1-4977 Update 1
PMS 09.11.1.678-c4ffd2

 

Any ideas?

2

what do you have your local streaming speed set to on the atv in plex connect, the only differences I see is the one that doesnt work is over 3Mbps and the other is 2.8Mbps, if you have your atv set to 3Mbps 720p, it's going to transcode it down.  Set it to 4Mbps 720p and see if that helps.

3

I think the problem is ref frames = 9 in the first video. Try transcoderaction = DirectPlay and if it works you have two options:

  1. Use transcoderaction = DirectPlay
  2. Use transcoderaction = Auto but change the file iOS-AppleTV.xml (it's in one of the Plex Media Server sub-folders) and increase the reference frames parameter

Which Syno model are you using ?

4

what do you have your local streaming speed set to on the atv in plex connect, the only differences I see is the one that doesnt work is over 3Mbps and the other is 2.8Mbps, if you have your atv set to 3Mbps 720p, it's going to transcode it down.  Set it to 4Mbps 720p and see if that helps.

I can't seem to find anywhere to change the setting in plexconnect, but I found it in the webpage of the plex server which was set to 3mbps so I changed them to 4mbps.

I think the problem is ref frames = 9 in the first video. Try transcoderaction = DirectPlay and if it works you have two options:

  1. Use transcoderaction = DirectPlay
  2. Use transcoderaction = Auto but change the file iOS-AppleTV.xml (it's in one of the Plex Media Server sub-folders) and increase the reference frames parameter

Which Syno model are you using ?

I can't seem to find that file in any of the folders, the only preference file I remember is the one in the plugins folder, which seems to reset every time the server restarts.

I have a Synology DS1513+ with 4GB ram.

5

PlexConnect has options in the GUI on the top bar as you start it, these are the options being referred to

Those files may be out of spec due t the reference frames as already said so that is why they transcode by default.

6

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