[FFmpeg-user] Providing HLS for a QuickTime Broadcaster AV stream

l1 at newanswertech.com l1 at newanswertech.com
Wed Jun 4 04:33:36 CEST 2014


I am attempting to provide an HTTP Live Streaming feed, converted from a 
received unicast stream from QuickTime Broadcaster running, of course, on a Mac.
I am using a custom compiled version of FFMpeg, running on a Ubuntu server.

I was originally trying to follow this instructionset, although various 
problems have caused me to modify the command somewhat: 
which is the only source I found for how to do this.  However, it's not working.

My command:
ffmpeg -probesize 5MB -vcodec h264 -acodec pcm_s16le -i ~/origin.sdp \
-acodec libfdk_aac -ac 2 -b:a 128k -vcodec libx264 -fpre \
$HOME/ffmpeg_build/share/ffmpeg/libx264-ipod640.ffpreset -b:v 500k -threads 0 \
-g 75 -level 3.1 -map 0 $-flags -global_header -f segment \
-segment_time 10 \
-segment_list playlist.m3u8 -segment_list_flags +live \
-segment_list_entry_prefix http://something.com/somedir/ \
-segment_format mpegts stream%05d.ts

-fpre is because I tried to use -vpre, but it could never find the preset, even 
with "export FFMPEG_DATADIR=$HOME/ffmpeg_build/share".

ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
   built on Jun  1 2014 06:16:27 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
   configuration: --prefix=/home/ubuntu/ffmpeg_build 
--extra-ldflags=-L/home/ubuntu/ffmpeg_build/lib --bindir=/home/ubuntu/bin 
--extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac 
--enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora 
--enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree
   libavutil      52. 87.100 / 52. 87.100
   libavcodec     55. 65.100 / 55. 65.100
   libavformat    55. 42.100 / 55. 42.100
   libavdevice    55. 13.101 / 55. 13.101
   libavfilter     4.  5.100 /  4.  5.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 19.100 /  0. 19.100
   libpostproc    52.  3.100 / 52.  3.100
[sdp @ 0x382b060] Estimating duration from bitrate, this may be inaccurate
[sdp @ 0x382b060] Could not find codec parameters for stream 1 (Video: h264): 
unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, sdp, from '/home/vidstream/origin.sdp':
     title           : QuickTime
   Duration: 00:00:00.00, bitrate: 1404 kb/s
     Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
     Stream #0:1: Video: h264, 90k tbr, 90k tbn, 180k tbc
[buffer @ 0x38907e0] Unable to parse option value "0x0" as image size
[buffer @ 0x38907e0] Unable to parse option value "-1" as pixel format
[buffer @ 0x38907e0] Unable to parse option value "0x0" as image size
[buffer @ 0x38907e0] Error setting option video_size to value 0x0.
[graph 1 input from stream 0:1 @ 0x3890200] Error applying options to the 
Error opening filters!

origin.sdp, sans identifying information:

o=- 85 1468213153 IN IP4
t=0 0
:Gaiter Jones Instructions
:Producer Name
m=audio 5432 RTP/AVP 96
c=IN IP4 #.#.#.#
a=rtpmap:96 X-QT/44100/2
m=video 5434 RTP/AVP 97
c=IN IP4 #.#.#.#
a=rtpmap:97 X-QT/90000
a=framesize:97 640-480

Any help would be very much appreciated!  I've been fighting with this for two 
days, and my deadline is basically tomorrow.



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