[MPlayer-users] ffmpeg H264 looses audio sync when playing HTTP stream

[Rene Dohmen]

Hi,

I tried increasing the autosync to 1000 -> and it runs fine -> but the
audio is a little bit to early now (probably because of the extra video
filters)
mplayer -keepaspect -vo corevideo -prefer-ipv4 -vfm ffmpeg -lavdopts
threads=4 -cache 16192 -cache-min 50
-vf-add screenshot,ass,format=yuy2 -autosync 1000
http://192.168.6.70:8080/chlist/0065

Any help is appreciated.
I'm working on a short howto that explains howto build a deployable mplayer
for OSX in a few simple steps. Will post that in the mplayer wiki when it
is ready.

Kind Regards
R

On Fri, Mar 23, 2012 at 4:45 PM, Rene Dohmen <acidjunk at gmail.com> wrote:

> Hi,
>
> I'm running mplayer on OSX for playback of live video via N7 HD network
> tuner.
>
> This is my mplayer configure line:
>
> ./configure --disable-x11 --disable-gl --disable-mencoder
> --enable-macosx-bundle --enable-macosx-finder --target=x86_64-Darwin
> --disable-fontconfig --enable-runtime-cpudetection
>
> It plays fine; but after some minutes the audio gets out of sync. I tried
> a lot of different options e.g.
> - autosync 0
> - autosync 10
> - other values in the -lavdopts
>
> The complete command with an excerpt of the log:
>
> --
> mplayer -slave -idle -quiet -keepaspect -prefer-ipv4 -vfm ffmpeg -lavdopts
> lowres=0:fast=1:skiploopfilter=all -cache 16192 -cache-min 50
> http://192.168.6.70:8080/chlist/0065
> MPlayer SVN-r34819-4.2.1 (C) 2000-2012 MPlayer Team
>
> Playing http://192.168.6.70:8080/chlist/0065.
> Connecting to server 192.168.6.70[192.168.6.70]: 8080...
>
> Cache size set to 16192 KBytes
> Cache fill: 49.97% (8284692 bytes)
>
> libavformat version 54.2.100 (internal)
> TS file format detected.
> VIDEO H264(pid=2500) AUDIO A52(pid=54) SUB DVB(pid=2501)  PROGRAM N. 29
> FPS seems to be: 25.000000
> ==========================================================================
> Trying to force video codec driver family ffmpeg...
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> libavcodec version 54.10.100 (internal)
> Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
> ==========================================================================
> ==========================================================================
> Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
> Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
> ==========================================================================
> AO: [coreaudio] 48000Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> Unsupported PixelFormat 61
> Unsupported PixelFormat 53
> Unsupported PixelFormat 81
> [h264 @ 0x105c0c9a0]error while decoding MB 72 26, bytestream (62)
> [h264 @ 0x105c0c9a0]mmco: unref short failure
> [h264 @ 0x105c0c9a0]mmco: unref short failure
> [h264 @ 0x105c0c9a0]concealing 5017 DC, 5017 AC, 5017 MV errors
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
> [swscaler @ 0x105c0e710]BICUBIC scaler, from yuv420p to yuyv422 using MMX2
> VO: [corevideo] 1920x1080 => 1920x1080 Packed YUY2
> [ASPECT] Warning: No suitable new res found!
> New_Face failed. Maybe the font path is wrong.
> Please supply the text font file (~/.mplayer/subfont.ttf).
> subtitle font: load_sub_face failed.
> New_Face failed. Maybe the font path is wrong.
> Please supply the text font file (~/.mplayer/subfont.ttf).
> subtitle font: load_sub_face failed.
> [h264 @ 0x105c0c9a0]Increasing reorder buffer to 1
> [h264 @ 0x105c0c9a0]mmco: unref short failure
> [h264 @ 0x105c0c9a0]number of reference frames (0+5) exceeds max (4;
> probably corrupt input), discarding one
> [h264 @ 0x105c0c9a0]Increasing reorder buffer to 2
> [h264 @ 0x105c0c9a0]Increasing reorder buffer to 3
> [h264 @ 0x105c0c9a0]mmco: unref short failure
> [h264 @ 0x105c0c9a0]number of reference frames (0+5) exceeds max (4;
> probably corrupt input), discarding one
> [ac3 @ 0x105c0c9a0]frame CRC mismatch
> [ac3 @ 0x105c0c9a0]frame CRC mismatch
> [ac3 @ 0x105c0c9a0]frame CRC mismatch
> [ac3 @ 0x105c0c9a0]frame sync error
> --
>
> I know there are errors in the stream; but VLC plays it just fine. And
> with an older compiled version of mplayer I didn't have audio sync
> problems. Am I doing something wrong? is there an beter codec to play this
> kind of stream?
>
> Kind Regards
> Rene Dohmen
>
>