FFMPEG No such file or directory but ffmeg is found

[risiko79]

telly release with the issue:
telly is preparing to go live (version=1.1.0.8, branch=dev, revision=96424a4719f33de9c1b66d8d2186e0452e45a234)

Last working telly release (if known):

Operating environment (Docker/Windows/Linux/QNAP, etc.):
Debian 10 (LXC)

Description of problem:
ffmpeg is found and started bu last message in log is "No such file or directory" (see log)

Contents of telly.config.toml [if you're using a version above 1.1]:
ffmpeg=true (see log)

Command line used to run telly [if applicable]:
none

telly or docker log:
time="2020-07-31T10:01:28+02:00" level=info msg="telly is preparing to go live (version=1.1.0.8, branch=dev, revision=96424a4719f33de9c1b66d8d2186e0452e45a234)"
time="2020-07-31T10:01:28+02:00" level=debug msg="Build context (go=go1.12.17, user=root@7abd9a6a6502, date=20200704-05:23:36)"
time="2020-07-31T10:01:28+02:00" level=debug msg="Loaded configuration {\n "config": {\n "file": ""\n },\n "discovery": {\n "device-auth": "telly123",\n "device-firmware-name": "hdhomeruntc_atsc",\n "device-firmware-version": "20150826",\n "device-friendly-name": "telly",\n "device-id": "12345678",\n "device-manufacturer": "Silicondust",\n "device-model-number": "HDTC-2US",\n "device-uuid": "12345678-AE2A-4E54-BBC9-33AF7D5D6A92",\n "ssdp": true\n },\n "filter": {\n "regex": ".*",\n "regex-inclusive": false\n },\n "iptv": {\n "ffmpeg": true,\n "playlist": "",\n "starting-channel": 10000,\n "streams": 10,\n "xmltv-channels": true\n },\n "log": {\n "level": "debug",\n "requests": true\n },\n "source": [\n {\n "M3U": "/home/telly/playlistTV_rewrite.m3u",\n "Name": "",\n "Provider": "Custom"\n }\n ],\n "version": false,\n "web": {\n "base-address": "192.168.178.226:6077",\n "listen-address": "0.0.0.0:6077"\n }\n}"
time="2020-07-31T10:01:28+02:00" level=info msg="Loading M3U from /home/telly/playlistTV_rewrite.m3u"
time="2020-07-31T10:01:28+02:00" level=debug msg="These channels (75) passed the filter and successfully parsed: ....
time="2020-07-31T10:01:28+02:00" level=debug msg="These channels (0) did NOT pass the filter: "
time="2020-07-31T10:01:28+02:00" level=info msg="Loaded 75 channels into the lineup from "
time="2020-07-31T10:01:28+02:00" level=debug msg="creating device xml"
time="2020-07-31T10:01:28+02:00" level=debug msg="creating webserver routes"
[GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.

• using env: export GIN_MODE=release
• using code: gin.SetMode(gin.ReleaseMode)

[GIN-debug] GET /metrics --> github.com/tellytv/telly/internal/go-gin-prometheus.prometheusHandler.func1 (4 handlers)
[GIN-debug] GET / --> main.deviceXML.func1 (4 handlers)
[GIN-debug] GET /discover.json --> main.discovery.func1 (4 handlers)
[GIN-debug] GET /lineup_status.json --> main.serve.func1 (4 handlers)
[GIN-debug] POST /lineup.post --> main.serve.func2 (4 handlers)
[GIN-debug] GET /device.xml --> main.deviceXML.func1 (4 handlers)
[GIN-debug] GET /lineup.json --> main.serveLineup.func1 (4 handlers)
[GIN-debug] GET /lineup.xml --> main.serveLineup.func1 (4 handlers)
[GIN-debug] GET /auto/:channelID --> main.stream.func1 (4 handlers)
[GIN-debug] GET /epg.xml --> main.xmlTV.func2 (4 handlers)
[GIN-debug] GET /debug.json --> main.serve.func3 (4 handlers)
time="2020-07-31T10:01:28+02:00" level=debug msg="Advertising telly as telly (12345678-AE2A-4E54-BBC9-33AF7D5D6A92)"
[GIN-debug] GET /manage/*filepath --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (4 handlers)
[GIN-debug] HEAD /manage/*filepath --> github.com/gin-gonic/gin.(*RouterGroup).createStaticHandler.func1 (4 handlers)
time="2020-07-31T10:01:28+02:00" level=info msg="telly is live and on the air!"
time="2020-07-31T10:01:28+02:00" level=info msg="Broadcasting from http://192.168.178.226:6077/"
time="2020-07-31T10:01:28+02:00" level=info msg="EPG URL: http://192.168.178.226:6077/epg.xml"
time="2020-07-31T10:01:28+02:00" level=info msg="Lineup JSON: http://192.168.178.226:6077/lineup.json"
[GIN-debug] Listening and serving HTTP on 0.0.0.0:6077
time="2020-07-31T10:01:36+02:00" level=info msg="Serving channel number 10006"
time="2020-07-31T10:01:36+02:00" level=info msg="Remuxing stream with ffmpeg"
time="2020-07-31T10:01:36+02:00" level=info msg="ffmpeg version 4.1.6-1deb10u1 Copyright (c) 2000-2020 the FFmpeg developers"
time="2020-07-31T10:01:36+02:00" level=info msg=" built with gcc 8 (Debian 8.3.0-6)"
time="2020-07-31T10:01:36+02:00" level=info msg=" configuration: --prefix=/usr --extra-version='1deb10u1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavutil 56. 22.100 / 56. 22.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavcodec 58. 35.100 / 58. 35.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavformat 58. 20.100 / 58. 20.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavdevice 58. 5.100 / 58. 5.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavfilter 7. 40.101 / 7. 40.101"
time="2020-07-31T10:01:36+02:00" level=info msg=" libavresample 4. 0. 0 / 4. 0. 0"
time="2020-07-31T10:01:36+02:00" level=info msg=" libswscale 5. 3.100 / 5. 3.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libswresample 3. 3.100 / 3. 3.100"
time="2020-07-31T10:01:36+02:00" level=info msg=" libpostproc 55. 3.100 / 55. 3.100"
time="2020-07-31T10:01:36+02:00" level=info msg=": No such file or directory"
time="2020-07-31T10:01:36+02:00" level=info msg="Stopped streaming 10006"
time="2020-07-31T10:01:36+02:00" level=info msg="Stopped streaming 10006"
http: superfluous response.WriteHeader call from github.com/gin-gonic/gin.(*responseWriter).WriteHeaderNow (response_writer.go:70)

Additional information:
ffmpeg is working fine from command line

[mulbc]

I have the same issue and just found out that ffmpeg is executed as ffmpeg -i -codec copy -f mpegts pipe:1 (so the feed URI is empty in my data set)

I'm currently on 1.1.0 beta 8 and try to proxy my FritzBox with rtsp links

[mulbc]

The issue for me is this line:

telly/internal/m3uplus/main.go

Line 99 in f43e486

case strings.HasPrefix(line, "http") || strings.HasPrefix(line, "udp"):

Since it only selects http or udp URIs, my m3u with rtsp links is not properly parsed and thus has empty URI fields.

I changed the line to

	case strings.HasPrefix(line, "http") || strings.HasPrefix(line, "udp") || strings.HasPrefix(line, "rtsp"):

and it immediately started to work for me