I'm trying to script some testing of Wowza Media Server. Basically, I'm attempting to just beat the living bejeepers out of the thing. I have 5 slightly older computers, originally XP boxes, which I have installed Mint 15 on. I have a script that basically calls the file (or a symbolic link to the file) and takes it into avconv, then dumps it into null.
The idea here is that with 5 of these computers all starting a new thread every second, up to the max they can handle without freezing, we'll get a decent idea of what our current implementation can handle. The script I have works great, but only on some machines. The systems are all the same hardware, and I installed the same software on them in the beginning, although some of them may have had additional packages installed for various tasks since then. The command I issue in script is:
avconv version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers built on Mar 30 2013 22:20:06 with gcc 4.7.2 [h264 @ 0xd87ae0] mmco: unref short failure [applehttp @ 0xd80d40] max_analyze_duration reached [applehttp @ 0xd80d40] Estimating duration from bitrate, this may be inaccurate Input #0, applehttp, from 'http://OUR_DOMAIN.com:1935/vod/_definst_/encode/video_file/00/00/00/12/13/mp4:TestFile.mp4/playlist.m3u8': Duration: 02:05:54.00, start: 27.728000, bitrate: N/A Stream #0.0: Data:  / 0x0015 Metadata: variant_bitrate : 1610015 Stream #0.1: Video: h264 (Main), yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 23.98 tbr, 90k tbn, 47.95 tbc Metadata: variant_bitrate : 1610015 Stream #0.2: Audio: aac, 48000 Hz, 5.1, s16 Metadata: variant_bitrate : 1610015 [buffer @ 0x13e02c0] w:1280 h:720 pixfmt:yuv420p [libvo_aacenc @ 0x12c49c0] Unable to set encoding parameters Output #0, mp4, to '/dev/null': Stream #0.0: Video: mpeg4, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 23.98 tbc Metadata: variant_bitrate : 1610015 Stream #0.1: Audio: libvo_aacenc, 48000 Hz, 5.1, s16, 200 kb/s Metadata: variant_bitrate : 1610015 Stream mapping: Stream #0:1 -> #0:0 (h264 -> mpeg4) Stream #0:2 -> #0:1 (aac -> libvo_aacenc) Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
Any clues would be greatly appreciated. Thanks!