minidlna cannot play some mkv files on roku ultimate

W

walterbyrd

I have tried converting the files with ffmpeg. That does not work. I checked the codec with ffprob, it seems the codecs are supported by roku, but the file does not work, I am not getting any sound.

Here is the command I used:
ffmpeg -i input.mkv -c:v libx264 -preset slow -crf 22 -pix_fmt yuv420p -c:a ac3 output.mp4
Click to expand...

The conversion process takes too long anyway. I think I am going to go back to jellyfin, but I would like to stay with minidlna.

Does anybody have any ideas?
 
media file support is always hit or miss with commercial play devices.

start with a short, simple, mkv with low quality a/v rates first. Also might try aac instead of ac3 and limit the bitrates.
 
I think you're starting in the wrong end trying to solve this issue...

First of all, what are "the files"?
mediainfo will generate useful information, you probably don't need to re-encode video.

Transcoding takes quite a bit of processing power, hardware acceleration helps a lot in that regard but I'm not sure what "slow" implies and using -preset slow will not improve overall performance. It's recommended to use fast or even veryfast presets for real time transcoding but at the expense of efficiency.
 
some transcodes i use, no idea what it does for minidlna,

Code: 
ffmpeg -i input.mkv  -c:v libxvid -q:v 5 -q:a 5 -c:a aac output.mkv

Code: 
    ffmpeg -i "$input" \
           -map 0:v:0 \
           -map 0:a:1 \
           -vf "format=yuv420p" \
           -c:v libx264 \
           -profile:v high \
           -level 4.1 \
           -crf 22 \
           -c:a aac \
           -b:a 512k \
           "$output"
 
kent_dorfman766 said:
media file support is always hit or miss with commercial play devices.

start with a short, simple, mkv with low quality a/v rates first. Also might try aac instead of ac3 and limit the bitrates.
Click to expand...
Yep, it's part of why I went to the effort of switching to jellyfin for that.

However, https://support.roku.com/article/share-media-over-usb-or-network , does have a list of a bunch of he supported settings, although I personally don't bother with transcoding, I just choose whatever setting works for me and stick to that. If I ever do start trying to stream over the net, I might change though.
 
diizzy said:
I think you're starting in the wrong end trying to solve this issue...

First of all, what are "the files"?
mediainfo will generate useful information, you probably don't need to re-encode video.

Transcoding takes quite a bit of processing power, hardware acceleration helps a lot in that regard but I'm not sure what "slow" implies and using -preset slow will not improve overall performance. It's recommended to use fast or even veryfast presets for real time transcoding but at the expense of efficiency.
Click to expand...

By "the files" I meant some mkv files. I was referencing my subject line. By slow I mean it takes about 20 minutes to convert a 20 minute video.
 
Alain De Vos said:
some transcodes i use, no idea what it does for minidlna,

Code: 
ffmpeg -i input.mkv  -c:v libxvid -q:v 5 -q:a 5 -c:a aac output.mkv

Code: 
    ffmpeg -i "$input" \
           -map 0:v:0 \
           -map 0:a:1 \
           -vf "format=yuv420p" \
           -c:v libx264 \
           -profile:v high \
           -level 4.1 \
           -crf 22 \
           -c:a aac \
           -b:a 512k \
           "$output"
Click to expand...

For some reason, I am having trouble with both of those.
With the first I get:
[vost#0:0 @ 0x1e2efea8e500] Unknown encoder 'libxvid'
[vost#0:0 @ 0x1e2efea8e500] Error selecting an encoder
Error opening output file output.mkv.
Error opening output files: Encoder not found
Click to expand...
With the second I get:
Stream map '' matches no streams.
To ignore this, add a trailing '?' to the map.
Failed to set value '0:a:1' for option 'map': Invalid argument
Error parsing options for output file output.mkv.
Error opening output files: Invalid argument
 
I tried converting to aac. No help. I still have no audio. And the conversion takes about 20 minutes.
I think I am just going to go with Jellyfin.
For me, Jellyfin is overkill. I don't need or want many of the features. But, at least it transcodes.
 
walterbyrd said:
By "the files" I meant some mkv files. I was referencing my subject line. By slow I mean it takes about 20 minutes to convert a 20 minute video.
Click to expand...
What I'm trying to say is that you might do more processing than required and in general your choice of codes and container is technically not wrong but rather odd and I can see devices having issues with it.
 
You must log in or register to reply here.
Back
Top