No video, only audio on NVIDIA Shield 2017 recordings on local channels w/MP4

[dougw03 16]

Hello,

I have been running into a very strange corner-case issue since I changed my recordings from MKV to MP4. I have a separate thread where I found what I think is a bug with MKV recordings and so I had to switch to MP4. I am running an NVIDIA Shield 2017 hooked up via HDMI to my AVR which is connected to my TV. I am using an HD HomeRun Prime with Comcast service as my content provider. I noticed that after I switched to MP4, whenever I record shows only on local channels and try to play them back on my Shield TV, the video is black and I only get audio. I have tried recordings on regular cable channels and I do not have any issues. When I play the shows back on my PC, mobile (android), or even my other android TV box (Xiaomi MiBox via HDMI on another TV), the video plays just fine. I know the issue is with MP4 because if I turn off transcoding, the video comes through without any issues. I can get the video to come back if I click the [!] box. Can anyone help me determine what is going on here?

Edited February 13, 2017 by dougw03

[nominion 7]

Try this:  Start playing the recording.  Hit the down arrow on your remote to bring up the menu.  Scroll over to the right to the icon with the ! and click OK.  When prompted for "Playback error", hit yes.  

Edited February 14, 2017 by nominion

[dougw03 16]

Try this:  Start playing the recording.  Hit the down arrow on your remote to bring up the menu.  Scroll over to the right to the icon with the ! and click OK.  When prompted for "Playback error", hit yes.  

 

Thanks but I mentioned this in my original post and while it does the trick, it is not ideal since I have to do this every time I play the media. 

[ebr 14960]

Can you please post the media info from the web app for one that works and one that doesn't?  Thanks.

[dougw03 16]

@@ebr, here is one that doesn't work 

 

 

VideoCodecMPEG2VIDEO
Codec tagmp4v
ProfileMain
Level4
Resolution1920x1080
Aspect ratio16:9
AnamorphicNo
InterlacedNo
Framerate29.97003
Bitrate7497 kbps
Pixel formatyuv420p
Ref frames1

AudioLanguageund
CodecAC3
Codec tagac-3
Layout5.1
Channels6 ch
Bitrate384 kbps
Sample rate48000 Hz
DefaultYes
TitleUnd Dolby Digital 5.1 Default

Containermp4

And here is one that works,

 

 

VideoCodecH264
Codec tagavc1
AVCYes
ProfileHigh
Level32
Resolution1280x720
Aspect ratio16:9
AnamorphicNo
InterlacedNo
Framerate59.94006
Bitrate3492 kbps
Bit depth8 bit
Pixel formatyuv420p
Ref frames4
NAL4

AudioLanguageund
CodecAC3
Codec tagac-3
Layout5.1
Channels6 ch
Bitrate384 kbps
Sample rate48000 Hz
DefaultYes
TitleUnd Dolby Digital 5.1 Default

Containermp4

[Luke 37272]

@@dougw03, are these the same recordings that you're having issues with in the other topic?

[dougw03 16]

@@dougw03, are these the same recordings that you're having issues with in the other topic?

 

@@Luke, no unfortunately that issue stems from MKV transcoding . I switched to MP4 from MKV as a workaround and now am getting this issue with MP4 (though only on my Shield TV). The only option I'm left with is to not convert my recordings.

[ebr 14960]

I think this is the single ref frame problem again...

[Luke 37272]

@@dougw03, well the one that doesn't work has mpeg2video in an mp4 container. that's not a very common combination so it's not surprising that some players might have trouble with it.

[ebr 14960]

@@dougw03, well the one that doesn't work has mpeg2video in an mp4 container. that's not a very common combination so it's not surprising that some players might have trouble with it.

 

We actually did that by recording it from Live TV and then packaging it, right?

[Luke 37272]

Yea i'm guessing he selected mp4 output with original video.

[dougw03 16]

Yea i'm guessing he selected mp4 output with original video.

 

@@Luke so I guess the workaround is to convert the video when selecting MP4? MPEG2 in a MKV container works on everything I have, but the seek issue is making it unusable.

[Luke 37272]

mpeg2 in mkv should be fine, and yes if selecting mp4 then i would convert. i will respond to the other issue in the topic for it. thanks !