Strange output with Twitch url

[hedii]

hi, i get a strange output, not parsable at all with this twitch url:

youtube-dl -v http://www.twitch.tv/camak/v/28045712
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'http://www.twitch.tv/camak/v/28045712']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.01.15
[debug] Python version 2.7.6 - Linux-3.14.32-xxxx-grs-ipv6-64-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: ffmpeg N-51325-g29af74e-static, ffprobe N-51325-g29af74e-static
[debug] Proxy map: {}
[twitch:vod] 28045712: Downloading vod info JSON
[twitch:vod] 28045712: Downloading vod access token
[twitch:vod] 28045712: Downloading m3u8 information
[debug] Invoking downloader on u'http://vod.edgecast.hls.twitch.tv/v1/AUTH_system/vods_cd92/camak_18020368192_358194813/chunked/index-muted-OTEJL239VH.m3u8'
[download] Destination: Michael Bay Production Morning Show-v28045712.mp4
[debug] ffmpeg command line: ffmpeg -y -headers 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/20.0 (Chrome)
' -i http://vod.edgecast.hls.twitch.tv/v1/AUTH_system/vods_cd92/camak_18020368192_358194813/chunked/index-muted-OTEJL239VH.m3u8 -f mp4 -c copy -bsf:a aac_adtstoasc 'file:Michael Bay Production Morning Show-v28045712.mp4.part'
ffmpeg version N-51325-g29af74e-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 5.2.1 (Debian 5.2.1-24) 20151121
  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      55.  9.100 / 55.  9.100
  libavcodec     57. 16.100 / 57. 16.100
  libavformat    57. 19.100 / 57. 19.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 15.100 /  6. 15.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, hls,applehttp, from 'http://vod.edgecast.hls.twitch.tv/v1/AUTH_system/vods_cd92/camak_18020368192_358194813/chunked/index-muted-OTEJL239VH.m3u8':
  Duration: 02:54:21.57, start: 62.112989, bitrate: 0 kb/s
  Program 0 
    Metadata:
      variant_bitrate : 0
    Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 146 kb/s
    Stream #0:1: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709/bt709/iec61966-2-1), 1280x720, 60 fps, 60 tbr, 90k tbn, 120 tbc
    Stream #0:2: Data: timed_id3 (ID3  / 0x20334449)
[mp4 @ 0x3af1fe0] Codec for stream 0 does not use global headers but container format requires global headers
[mp4 @ 0x3af1fe0] Codec for stream 1 does not use global headers but container format requires global headers
Output #0, mp4, to 'file:Michael Bay Production Morning Show-v28045712.mp4.part':
  Metadata:
    encoder         : Lavf57.19.100
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 1280x720, q=2-31, 60 fps, 60 tbr, 90k tbn, 90k tbc
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, 146 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=41733 fps=419 q=-1.0 size=  310812kB time=00:11:35.57 bitrate=3660.5kbits/s     

the last line updates in real time in the console, even with --newline option.
This is ffmpeg output, no? why the normal output is not shown?

[jaimeMF]

This is ffmpeg output, no? why the normal output is not shown?

I guess you want the [download] 10% of XXX MiB ... message, we currently don't support that when using ffmpeg but you can get it with --hls-prefer-native(note that our implementation is not as good as what ffmpeg provides, but it allows quitting the download and resuming it later!)

[hedii]

Ok, but why ffmpeg is used as a downloader only for twitch ? I don't have that on other videos. What is the difference ? I parse the console output in a php app. This difference of output is a pain to parse

[jaimeMF]

What is the difference ?

Because they use HLS to deliver the videos (both live and archived videos).

This difference of output is a pain to parse

As I said: try using the --hls-prefer-native option.

[hedii]

Ok thank you !