[mythtv-users] Video too slow on some mpeg2's

Mark Hutchinson mark at onnow.net
Wed Feb 20 17:34:21 UTC 2008 

Ken Mandelberg wrote:
> I have a set of mpeg2's transferred from a directv tivo that are 
> unuseable with mythtv's internal player, but fine with mplayer, xine, 
> and vlc. The problem is the video is too slow and myth does massive 
> frame drops trying to stay in sync with audio.
>
> I suspect the problem is the unusual res of these mpeg's which is 1280 
> by 1088. I've already put it through mythtranscode --mpeg2 with no 
> change in performance.
>
> I'm including some of the diagnostic output, first from a successful 
> mplayer startup, and the the troubled mythtv internal player.
>
> Any suggestion on how to adjust the internal player to handle these?
>
> ===mplayer==
> Playing 1021_20080219094928.mpg.
> MPEG-PS file format detected.
> VIDEO:  MPEG2  1280x1088  (aspect 3)  29.970 fps  65000.0 kbps (8125.0 
> kbyte/s)
> xscreensaver_disable: Could not find XScreenSaver window.
> GNOME screensaver disabled
> ==========================================================================
> Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
> VDec: vo config request - 1280 x 1088 (preferred colorspace: Mpeg PES)
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> The selected video_out device is incompatible with this codec.
> Try adding the scale filter, e.g. -vf spp,scale instead of -vf spp.
> VDecoder init failed :(
> Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
> Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
> ==========================================================================
> ==========================================================================
> Forced audio codec: mad
> Opening audio decoder: [liba52] AC3 decoding with liba52
> Using SSE optimized IMDCT transform
> Using MMX optimized resampler
> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
> Selected audio codec: [a52] afm: liba52 (AC3-liba52)
> ==========================================================================
> AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> VDec: vo config request - 1280 x 1088 (preferred colorspace: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
> VO: [xv] 1280x1088 => 1934x1088 Planar YV12
>
>
> -----mythtv---
> 2008-02-20 10:39:50.204 AFD: Using ffmpeg for video decoding
> 2008-02-20 10:39:50.204 AFD: Looking for decoder for MPEG2VIDEO
> 2008-02-20 10:39:50.205 AFD: Opened codec 0x84deb00, id(MPEG2VIDEO) 
> type(Video)
> 2008-02-20 10:39:50.205 AFD: Stream #1, has id 0x128 codec id AC3, type 
> Audio, bitrate 384000 at 0x0x84de7f0
> 2008-02-20 10:39:50.205 AFD: codec AC3 has 6 channels
> 2008-02-20 10:39:50.205 AFD: Looking for decoder for AC3
> 2008-02-20 10:39:50.207 AFD: Opened codec 0x84dda10, id(AC3) type(Audio)
> 2008-02-20 10:39:50.207 
> RingBuf(myth://192.168.10.10:6543/1021_20080219094928.mpg): 
> CalcReadAheadThresh(3060730064 KB)
>                           -> threshhold(64 KB) min read(0 KB) blk 
> size(32 KB)
> 2008-02-20 10:39:50.213 Opening audio device '/dev/dsp'. ch 2(2) sr 48000
> 2008-02-20 10:39:50.213 Opening OSS audio device '/dev/dsp'.
> 2008-02-20 10:39:50.224 Dec: Trying to select track (w/lang)
> 2008-02-20 10:39:50.224 Dec: Selecting first track
> 2008-02-20 10:39:50.224 Dec: Selected track #1 in the Unknown language(0)
> 2008-02-20 10:39:50.225 Resyncing position map. posmapStarted = 0 
> livetv(0) watchingRec(0)
> 2008-02-20 10:39:50.302 Position map filled from DB to: 94598
> 2008-02-20 10:39:50.303 SyncPositionMap prerecorded, from DB: 3251 entries
> 2008-02-20 10:39:50.303 SyncPositionMap, new totframes: 94598, new 
> length: 3156, posMap size: 3251
> 2008-02-20 10:39:50.303 Input #0, mpeg, from 
> 'myth://192.168.10.10:6543/1021_20080219094928.mpg':
> 2008-02-20 10:39:50.303   Duration: 01:00:01.8, start: 0.178844, 
> bitrate: 13541 kb/s
> 2008-02-20 10:39:50.303     Stream #0.0[0x1e0], 1/90000: Video: 
> mpeg2video, yuv420p, 1280x1088 [PAR 68:45 DAR 16:9], 1001/30000, 65000 
> kb/s, 29.97 tb(r)
> 2008-02-20 10:39:50.304     Stream #0.1[0x80], 1/90000: Audio: ac3, 
> 48000 Hz, stereo, 384 kb/s
> 2008-02-20 10:39:50.304 AFD: Position map found
> 2008-02-20 10:39:50.304 AFD: Successfully opened decoder for file: 
> "myth://192.168.10.10:6543/1021_20080219094928.mpg". novideo(0)
> 2008-02-20 10:39:50.318 VideoOutput: Allowed renderers: xv-blit,xshm,xlib
> 2008-02-20 10:39:50.318 VideoOutput: Allowed renderers (filt: ffmpeg): 
> xlib,xshm,xv-blit
> 2008-02-20 10:39:50.327 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(xv-blit) osd(softblend) osdfade(enabled) 
> deint(bobdeint,linearblend) filt()
> 2008-02-20 10:39:50.327 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(quartz-blit) osd(softblend) osdfade(enabled) 
> deint(linearblend,linearblend) filt()
> 2008-02-20 10:39:50.327 VDP: LoadBestPreferences(2048x2048, 0)
> 2008-02-20 10:39:50.327 VDP: LoadBestPreferences(2048x2048, 60)
> 2008-02-20 10:39:50.327 VDP: LoadBestPreferences(1280x1088, 60)
> 2008-02-20 10:39:50.327 VideoOutput: Preferred renderer: xv-blit
> 2008-02-20 10:39:50.327 VideoOutput: Trying video renderer: xv-blit
> 2008-02-20 10:39:50.339 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(xv-blit) osd(softblend) osdfade(enabled) 
> deint(bobdeint,linearblend) filt()
> 2008-02-20 10:39:50.339 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(quartz-blit) osd(softblend) osdfade(enabled) 
> deint(linearblend,linearblend) filt()
> 2008-02-20 10:39:50.339 VDP: LoadBestPreferences(2048x2048, 0)
> 2008-02-20 10:39:50.339 VDP: LoadBestPreferences(2048x2048, 60)
> 2008-02-20 10:39:50.395 VideoOutputXv: ctor
> 2008-02-20 10:39:50.395 XOff: 0, YOff: 0
> 2008-02-20 10:39:50.395 VDP: LoadBestPreferences(1280x1088, 60)
> 2008-02-20 10:39:50.396 Display Rect  left: 0, top: 85, width: 1920, 
> height: 1029, aspect: 1.33333
> 2008-02-20 10:39:50.396 Video Rect    left: 0, top: 0, width: 1280, 
> height: 1088, aspect: 1.55556
> 2008-02-20 10:39:50.396 VideoOutputXv: Pixel dimensions: Screen 
> 1920x1200, window 1920x1200
> 2008-02-20 10:39:50.403 VideoOutputXv: Estimated display dimensions: 
> 518x324 mm  Aspect: 1.59877
> 2008-02-20 10:39:50.403 VideoOutputXv: Estimated window dimensions: 
> 518x324 mm  Aspect: 1.59877
> 2008-02-20 10:39:50.403 VideoOutputXv: InitSetupBuffers() render: 
> xv-blit, allowed: xv-blit,xshm,xlib
> 2008-02-20 10:39:50.409 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(xv-blit) osd(softblend) osdfade(enabled) 
> deint(bobdeint,linearblend) filt()
> 2008-02-20 10:39:50.409 VDP: Accepting: cmp(> 0 0) dec(ffmpeg) cpus(0) 
> rend(quartz-blit) osd(softblend) osdfade(enabled) 
> deint(linearblend,linearblend) filt()
> 2008-02-20 10:39:50.409 VDP: LoadBestPreferences(2048x2048, 0)
> 2008-02-20 10:39:50.409 VDP: LoadBestPreferences(2048x2048, 60)
> 2008-02-20 10:39:50.409 VDP: LoadBestPreferences(1280x1088, 60)
> 2008-02-20 10:39:50.410 VideoOutputXv: @ j=0 Looking for flag[s]: 
> XvInputMask XvImageMask  10
> 2008-02-20 10:39:50.410 VideoOutputXv: Adaptor#0: Intel(R) Video Overlay 
> has flag[s]: XvInputMask XvImageMask
> 2008-02-20 10:39:50.411 VideoOutputXv: Has XVideo flags...
> 2008-02-20 10:39:50.411 VideoOutputXv: Has XV_BRIGHTNESS...
> 2008-02-20 10:39:50.411 VideoOutputXv: Here...
> 2008-02-20 10:39:50.411 VideoOutputXv: Grabbed xv port 732008-02-20 
> 10:39:50.411 VideoOutputXv: XVideo surface found on port 73
> 2008-02-20 10:39:50.411 VideoOutputXv: XVideo Adaptor Name: 'Intel(R) 
> Video Overlay'
> 2008-02-20 10:39:50.412 VideoOutputXv: XVideo Format #0 is 'YUY2'
> 2008-02-20 10:39:50.412 VideoOutputXv: XVideo Format #1 is 'YV12'
> 2008-02-20 10:39:50.412 VideoOutputXv: XVideo Format #2 is 'I420'
> 2008-02-20 10:39:50.412 VideoOutputXv: XVideo Format #3 is 'UYVY'
> 2008-02-20 10:39:50.412 VideoOutputXv: Using XVideo Format 'YV12'
> 2008-02-20 10:39:50.412 VideoOutputXv: CreateShmImages(32): video_dim: 
> 1280x1088
> 2008-02-20 10:39:50.561 VDP: SetVideoRenderer(xv-blit)
> 2008-02-20 10:39:50.562 VDP: SetVideoRender(xv-blit) == GetVideoRenderer()
> 2008-02-20 10:39:50.562 VideoOutputXv: PictureAttributes: Brightness, 
> Contrast, Colour
> 2008-02-20 10:39:50.595
>
>
>   unsupported attribute
>
>
>
> 2008-02-20 10:39:50.596 Display Rect  left: 0, top: 0, width: 1920, 
> height: 1200, aspect: 1.59877
> 2008-02-20 10:39:50.596 Video Rect    left: 0, top: 0, width: 1280, 
> height: 1088, aspect: 1.55556
> 2008-02-20 10:39:50.598 Over/underscan. V: 0.02, H: 0.01
> 2008-02-20 10:39:50.598 Display Rect  left: 0, top: 0, width: 1920, 
> height: 1200, aspect: 1.59877
> 2008-02-20 10:39:50.598 Video Rect    left: 13, top: 22, width: 1254, 
> height: 1044, aspect: 1.55556
> 2008-02-20 10:39:50.598 VDP: LoadBestPreferences(1280x1088, 29.97)
> 2008-02-20 10:39:50.599 NVP: LoadFilters(''..) -> 0
> 2008-02-20 10:39:50.601 OSD Theme Dimensions W: 640 H: 480
> 2008-02-20 10:39:50.900 TV: StartPlayer(): took 1420 ms to start player.
> 2008-02-20 10:39:50.900 NVP: ClearAfterSeek(1)
> 2008-02-20 10:39:50.901 VideoOutputXv: ClearAfterSeek()
> 2008-02-20 10:39:50.901 VideoOutputXv: DiscardFrames(0)
> 2008-02-20 10:39:50.901 VideoBuffers::DiscardFrames(0): 
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
> 2008-02-20 10:39:50.901 VideoBuffers::DiscardFrames(0): 
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA -- done
> 2008-02-20 10:39:50.902 VideoOutputXv: DiscardFrames() 3: 
> AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA -- done()
> 2008-02-20 10:39:50.902 Realtime priority would require SUID as root.
> 2008-02-20 10:39:50.903 TV: Changing from None to WatchingPreRecorded
> 2008-02-20 10:39:50.929 VDP: GetFilteredDeint() : xv-blit -> 'bobdeint'
> 2008-02-20 10:39:50.932 Using deinterlace method bobdeint
> 2008-02-20 10:39:51.198 nVidiaVideoSync: Could not open device 
> /dev/nvidia0, No such device or address
> 2008-02-20 10:39:51.212 Set video sync frame interval to 33366
> 2008-02-20 10:39:51.230 Using video as timebase
> 2008-02-20 10:39:51.230 Video timing method: DRM
> 2008-02-20 10:39:51.231 Refresh rate: 16680, frame interval: 33366
> 2008-02-20 10:39:51.288 NVP: Video is 30 frames behind audio (too slow), 
> dropping frame to catch up.
> 2008-02-20 10:39:51.299 NVP: Video is 30 frames behind audio (too slow), 
> dropping frame to catch up.
> 2008-02-20 10:39:51.309 NVP: Video is 30 frames behind audio (too slow), 
> dropping frame to catch up.
> 2008-02-20 10:39:51.318 NVP: Video is 30 frames behind audio (too slow), 
> dropping frame to catch up.
> ....
>
>
>
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>   


I am seeing this exact problem on the latest SVN.  Internal player ONLY. 
There seems to be a problem with the Internal player.

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