[FFmpeg-user] Exactly one WebVTT stream is needed

Sat Nov 21 18:47:07 CET 2015

I was going to tell you that your formats were all wrong,
and that you needed h264 and aac
but I checked and hls has no limit on formats.

However, just because you can, doesn't mean you should,
hls implies h264 video, aac audio and 608 or webvtt captions.

May I ask why you would do it your way?
I am just curious.

----- Reply message -----
From: "Cloudclimber" <cloudclimber at gmx.net>
To: <ffmpeg-user at ffmpeg.org>
Subject: [FFmpeg-user] Exactly one WebVTT stream is needed
Date: Fri, Nov 20, 2015 4:50 PM

Hi there,

this command works without Problems in ffmpeg 2.7.2:

|./ffmpeg -i udp://@239.100.1.1:1234 -map 0 -probesize 100
-analyzeduration 100 -c copy -copy_unknown -f hls -hls_time 10 -hls_wrap
10 -hls_list_size 10 /var/www/test1_.m3u8

but since |ffmpeg 2.8.0 i got the Output below, even with ffmpeg 2.8.2 .
Sure i could exclude subtitle Streams, but i want to have dvb_teletext
in the stream also, so this is no solution.

Anyone has an idea how to map all streams, inclusive subtitle streams
with ffmpeg 2.8.2?

OUTPUT:
====================
root at ffmpegserver:~/ffmpeg-2.8.2-64bit-static# ./ffmpeg -i
udp://@239.100.1.1:1234 <udp://@239.100.1.1:1234/> -map 0 -probesize 100
-analyzeduration 100 -c copy -copy_unknown -f hls -hls_time 10 -hls_wrap
10 -hls_list_size 10 /var/www/test1_.m3u8 -loglevel debug
ffmpeg version 2.8.2-statichttp://johnvansickle.com/ffmpeg/  Copyright
(c) 2000-2015 the FFmpeg developers
built with gcc 5.2.1 (Debian 5.2.1-23) 20151028
configuration: --enable-gpl --enable-version3 --disable-shared
--disable-debug --enable-runtime-cpudetect --enable-libmp3lame
--enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex
--enable-libvorbis --enable-libvpx --enable-libfreetype
--enable-fontconfig --enable-libxvid --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg
--enable-libopus --enable-libass --enable-gnutls --enable-libvidstab
--enable-libsoxr --enable-frei0r --enable-libfribidi
--disable-indev=sndio --disable-outdev=sndio --cc=gcc
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Splitting the commandline.
Reading option '-i' ... matched as input file with argument
'udp://@239.100.1.1:1234'.
Reading option '-map' ... matched as option 'map' (set input stream
mapping) with argument '0'.
Reading option '-probesize' ... matched as AVOption 'probesize' with
argument '100'.
Reading option '-analyzeduration' ... matched as AVOption
'analyzeduration' with argument '100'.
Reading option '-c' ... matched as option 'c' (codec name) with argument
'copy'.
Reading option '-copy_unknown' ... matched as option 'copy_unknown'
(Copy unknown stream types) with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with
argument 'hls'.
Reading option '-hls_time' ... matched as AVOption 'hls_time' with
argument '10'.
Reading option '-hls_wrap' ... matched as AVOption 'hls_wrap' with
argument '10'.
Reading option '-hls_list_size' ... matched as AVOption 'hls_list_size'
with argument '10'.
Reading option '/var/www/test1_.m3u8' ... matched as output file.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging
level) with argument 'debug'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option copy_unknown (Copy unknown stream types) with argument 1.
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input file udp://@239.100.1.1:1234
<udp://@239.100.1.1:1234/>.
Successfully parsed a group of options.
Opening an input file: udp://@239.100.1.1:1234 <udp://@239.100.1.1:1234/>.
[udp @ 0x3c048c0] end receive buffer size reported is 131072
[mpegts @ 0x3c04080] Format mpegts probed with size=2048 and score=100
[mpegts @ 0x3c04080] stream=0 stream_type=3 pid=90 prog_reg_desc=
[mpegts @ 0x3c04080] stream=1 stream_type=6 pid=92 prog_reg_desc=
[mpegts @ 0x3c04080] stream=2 stream_type=2 pid=a8 prog_reg_desc=
[mpegts @ 0x3c04080] stream=3 stream_type=5 pid=585 prog_reg_desc=
[mpegts @ 0x3c04080] Before avformat_find_stream_info() pos: 0 bytes
read:215824 seeks:0
[mpegts @ 0x3c04080] parser not found for codec dvb_teletext, packets or
times may be invalid.
[mpegts @ 0x3c04080] parser not found for codec none, packets or times
may be invalid.
[mpegts @ 0x3c04080] parser not found for codec dvb_teletext, packets or
times may be invalid.
[mpeg2video @ 0x3c2a080] Invalid frame dimensions 0x0.
Last message repeated 4 times
[mpegts @ 0x3c04080] max_analyze_duration 5000000 reached at 5000000
microseconds st:2
[mpegts @ 0x3c04080] Could not find codec parameters for stream 3
(Unknown: none ([5][0][0][0] / 0x0005)): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
[mpegts @ 0x3c04080] After avformat_find_stream_info() pos: 2948780
bytes read:2949156 seeks:0 frames:469
Input #0, mpegts, from 'udp://@239.100.1.1:1234':
Duration: N/A, start: 85846.772444, bitrate: N/A
Program 3394
Metadata:
service_name : QVC PLUS
service_provider: SES ASTRA
Stream #0:0[0x90](ger), 208, 1/90000: Audio: mp2 ([3][0][0][0] /
0x0003), 48000 Hz, stereo, s16p, 128 kb/s
Stream #0:1[0x92](ger), 131, 1/90000: Subtitle: dvb_teletext
([6][0][0][0] / 0x0006)
Stream #0:2[0xa8], 130, 1/90000: Video: mpeg2video (Main), 1 reference
frame ([2][0][0][0] / 0x0002), yuv420p(tv, left), 720x576 [SAR 64:45 DAR
16:9], 1/50, max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:3[0x585], 0, 1/90000: Unknown: none ([5][0][0][0] / 0x0005)
Successfully opened the file.
Parsing a group of options: output file /var/www/test1_.m3u8.
Applying option map (set input stream mapping) with argument 0.
Applying option c (codec name) with argument copy.
Applying option f (force format) with argument hls.
Successfully parsed a group of options.
Opening an output file: /var/www/test1_.m3u8.
Successfully opened the file.
[webvtt @ 0x3fb80c0] Exactly one WebVTT stream is needed.
[mpegts @ 0x3fb7ae0] muxrate VBR, pcr every 2 pkts, sdt every 200,
pat/pmt every 40 pkts
Segmentation fault (core dumped)
root at ffmpegserver:~/ffmpeg-2.8.2-64bit-static#
============================

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