[MPlayer-users] There is no cache when playing m3u8 stream (hls-protocol)

[Waldemar]

Hello list,
when playing m3u8 live streams (hls-protocol), Mplayer dosen't use
cache. This leads to a delay when MPlayer jumps from one segment of
the playlist to the next and the hole stream becomes 'stutter'.

Here my use case:

$ mplayer -cache 1000 -cache-min 99
ffmpeg://http://webtv-aarh-8.stofa.dk/182_01.m3u8
MPlayer SVN-r36449-4.6 (C) 2000-2013 MPlayer Team

Playing ffmpeg://http://webtv-aarh-8.stofa.dk/182_01.m3u8.
libavformat version 55.18.100 (internal)
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
Cache fill:  0.04% (395 bytes)

libavformat file format detected.
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
[hls,applehttp @ 0xb74f1680]Estimating duration from bitrate, this may
be inaccurate
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0
LAVF: Program 0
VIDEO:  [H264]  854x480  0bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared
object file: No such file or directory
[vdpau] Error when calling vdp_device_create_x11: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 55.31.101 (internal)
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, floatle, 134.6 kbit/4.38% (ratio: 16828->384000)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file
or directory
AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample)
Starting playback...
[VD_FFMPEG] Trying pixfmt=0.
[VD_FFMPEG] XVMC-accelerated MPEG-2.
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
[VD_FFMPEG] Trying pixfmt=0.
[VD_FFMPEG] XVMC-accelerated MPEG-2.
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 854x480 => 854x480 Planar YV12
A:50954.1 V:50954.1 A-V:  0.000 ct:  0.047   0/  0 20%  2%  0.9% 0 0 0%

Exiting... (Quit)




Note: the 395 bytes in this line 'Cache fill:  0.04% (395 bytes)'  is
the size of the m3u8-file. You can verify this by using '-dumpstream'
paramenter.

Here what I get:

$ mplayer -cache 1000 -dumpstream -dumpfile stream.ts -cache-min 99
ffmpeg://http://webtv-aarh-8.stofa.dk/182_01.m3u8
MPlayer SVN-r36449-4.6 (C) 2000-2013 MPlayer Team

Playing ffmpeg://http://webtv-aarh-8.stofa.dk/182_01.m3u8.
libavformat version 55.18.100 (internal)
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
Using network protocols without global network initialization. Please
use avformat_network_init(), this will become mandatory later.
dump: 395 bytes written to 'stream.ts'.
Core dumped ;)

Exiting... (End of file)

$ cat stream.ts
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:11
#EXT-X-MEDIA-SEQUENCE:734893
#EXTINF:10,
/182/20130626T074944-182_01-734893.ts
#EXTINF:10,
/182/20130626T074944-182_01-734894.ts
#EXTINF:10,
/182/20130626T074944-182_01-734895.ts
#EXTINF:10,
/182/20130626T074944-182_01-734896.ts
#EXTINF:10,
/182/20130626T074944-182_01-734897.ts
#EXTINF:10,
/182/20130626T074944-182_01-734898.ts
$

So my question is are there any parameters I can tweak to enable
cache? Or is it a bug in MPlayer?

Thank you in advance.

Bye
Waldemar