Tvheadend

Try the ffmpeg command on the command line if something is not wrong on your tvh server. Here it works perfectly on tvh v4.1-2399-g806a5b7 .

What command exactly should I try on the console?

I tried the following and it gives me this output. Maybe something was fixed between 4.1.2399 and 4.1.2389?

admin@DS212j:/$ usr/bin/ffmpeg
ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.6.4 (Marvell GCC release 20150204-c4af733b 64K MAXPAGESIZE ALIGN CVE-2015-0235)
configuration: --prefix=/usr --incdir='${prefix}/include/ffmpeg' --arch=arm --target-os=linux --cross-prefix=/usr/local/arm-marvell-linux-gnueabi/bin/arm-marvell-linux-gnueabi- --enable-cross-compile --enable-optimizations --enable-pic --enable-gpl --enable-shared --disable-static --enable-version3 --enable-nonfree --enable-libfaac --enable-encoders --enable-pthreads --disable-bzlib --disable-protocol=rtp --disable-muxer=image2 --disable-muxer=image2pipe --disable-swscale-alpha --disable-ffserver --disable-ffplay --disable-devices --disable-bzlib --disable-altivec --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libmp3lame --disable-vaapi --disable-decoder=amrnb --disable-encoder=zmbv --disable-encoder=dca --disable-encoder=ac3 --disable-encoder=ac3_fixed --disable-encoder=eac3 --disable-decoder=dca --disable-decoder=eac3 --disable-decoder=truehd --cc=/usr/local/arm-marvell-linux-gnueabi/bin/arm-marvell-linux-gnueabi-ccache-gcc
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...

No, try the whole command like:

/usr/bin/ffmpeg -loglevel fatal -i https://nhkwtv-i.akamaihd.net/hls/live/263942/nhkwtv/index_2100.m3u8 -vcodec copy -acodec copy -metadata service_provider=BBC -metadata service_name=BBC1 -f mpegts pipe:1 > output.ts

Ok, I tried and got it created an empty output.ts file.

Sorry for the weird wording. What I meant was that I ran the command, and I received then an empty output.ts file in the folder. I'm not sure if this means that it works as expected or if there should be more to it?

Also do you know when dirks will release the latest version for the Synology NAS? Maybe that fixes the issue, since you are running a newer version than I do. Maybe something has changed in the code in those few iterations?

Thanks for helping me troubleshooting.

So what you mean is run the following in the commmand line? If I run this nothing is return. Do you know if there is somewhere a log file for ffmpeg that could help?

/usr/bin/ffmpeg -loglevel fatal -i https://nhkwtv-i.akamaihd.net/hls/live/263942/nhkwtv/index_2100.m3u8 -vcodec copy -acodec copy -metadata service_provider=BBC -metadata service_name=BBC1 -f mpegts /volume1/Video/Recordings/output.ts

So overall it seems that the last time the channel worked was on the 23rd of December.
However nothing has changed that day. There hasn't been an update of any packages or the NAS it self. TVH was updated 10 days before but the channel still worked in between.
The only update happening afterwards was on the 27th then again, with a NAS minor patch update regarding RAID that shouldn't affect tvh or ffmpeg.

Any ideas would be appreciated

Use loglevel info instead fatal to see what is ffmpeg doing.

This might give a little more info. Here the info Log:

/usr/bin/ffmpeg loglevel info -i https://nhkwtv-i.akamaihd.net/hls/live/263942/nhkwtv/index_2100.m3u8 -vcodec copy -acodec copy -metadata service_provider=BBC -metadata service_name=BBC1 -f mpegts /volume1/Video/Recordings/output3.ts
ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.6.4 (Marvell GCC release 20150204-c4af733b 64K MAXPAGESIZE ALIGN CVE-2015-0235)
configuration: --prefix=/usr --incdir='${prefix}/include/ffmpeg' --arch=arm --target-os=linux --cross-prefix=/usr/local/arm-marvell-linux-gnueabi/bin/arm-marvell-linux-gnueabi --enable-cross-compile --enable-optimizations --enable-pic --enable-gpl --enable-shared --disable-static --enable-version3 --enable-nonfree --enable-libfaac --enable-encoders --enable-pthreads --disable-bzlib --disable-protocol=rtp --disable-muxer=image2 --disable-muxer=image2pipe --disable-swscale-alpha --disable-ffserver --disable-ffplay --disable-devices --disable-bzlib --disable-altivec --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libmp3lame --disable-vaapi --disable-decoder=amrnb --disable-encoder=zmbv --disable-encoder=dca --disable-encoder=ac3 --disable-encoder=ac3_fixed --disable-encoder=eac3 --disable-decoder=dca --disable-decoder=eac3 --disable-decoder=truehd --cc=/usr/local/arm-marvell-linux-gnueabi/bin/arm-marvell-linux-gnueabi-ccache-gcc
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
https protocol not found, recompile FFmpeg with openssl, gnutls,
or securetransport enabled.
https://nhkwtv-i.akamaihd.net/hls/live/263942/nhkwtv/index_2100.m3u8: Protocol not found

You have ffmpeg without enabled https:

https protocol not found, recompile FFmpeg with openssl, gnutls,
or securetransport enabled.
https://nhkwtv-i.akamaihd.net/hls/live/263942/nhkwtv/index_2100.m3u8: Protocol not found

Sadly I am not a linux guru, can you tell me what commands are needed on my commandline on my NAS to enable and recompile?

Thank you

Please, ask people around your distro. It's not really tvheadend issue.

They are not responding over there... But I'll keep trying, maybe I'll find a description somewhere on how to.
This can be closed than as this is not a tvheadend issue but a configuration issue of ffmpeg.

Thanks for good the support so far.

As a final note for whoever might stumble upon this as well.

Issue resolved. It seem Synology has several different instances of ffmpeg installed (like for Video and Audiostation) which automatically link to bin as the main used ffmpeg. Thus to fix this issue one has to directly link to the ffmpeg from the syno package e.g. pipe:///volume1/@appstore/ffmpeg/bin/ffmpeg

With this the issue is then fixed.