Re: Digicam-Video: Skipping frame bei Audio bewirkt Stille am Ende > 1 min.

Am Donnerstag, 11. Februar 2010 17:25:40 schrieb Maik Holtkamp:

> Das Problem lag IIRC in der sampling rate (11.xxx), die weder
> transcode noch mplayer direkt in 44100 wandeln wollten. Daher der
> Umweg ueber sox. 

Das Audiofile mit mplayer zu erstellen, war eine gute Idee. Es gibt keine 
skipped Frames mehr.

sox WARN rate: rate clipped 1920 samples; decrease volume?
sox WARN dither: dither clipped 1685 samples; decrease volume?

GIbt es da eine automatische Anpassung?


Doch das Problem dürfte auch im Videobereich entstehen, denn das Original hat 
zB eine Dauer von 1:18, alle Audio-Files aus dem Skript darunter, haben auch 
1:18. Die mkv-Datei hat dann aber 1:33

#mplayer -vo null -vc dummy -af resample=44100 -ao pcm:waveheader "$AVIFILE" &
Das hat auch nichts gebracht.

mplayer -vo null -vc dummy -ao pcm:waveheader "$AVIFILE"
sox audiodump.wav -r 44100 audiodump_44100.wav &

mencoder -ovc x264 -x264encopts qp=28:threads=auto:pass=1 \
    -vf yadif=0,softskip,harddup \
    -vf unsharp=l:5x5:0.9:c:5x5:0.1 \
    -sws 9 -nosound -of rawvideo -o /dev/null $AVIFILE

lame --quiet --preset standard audiodump_44100.wav "$MP3FILE" &

mencoder -ovc x264 -x264encopts qp=28:threads=auto:pass=2 \
    -vf yadif=0,softskip,harddup \
    -vf unsharp=l:5x5:0.9:c.5x5:0.1 \
    -sws 9 -nosound -of rawvideo -o "$X264FILE" "$AVIFILE"

mkvmerge -o "$MKVFILE" "$X264FILE" "$MP3FILE"




Original:

Playing digicam_nikon_test.avi.
AVI file format detected.
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
VIDEO:  [MJPG]  640x480  24bpp  30.000 fps  6815.3 kbps (831.9 kbyte/s)
Clip info:
 Software:
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Unsupported PixelFormat -1
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG)
==========================================================================
==========================================================================
Opening audio decoder: [alaw] aLaw/uLaw audio decoder
AUDIO: 8000 Hz, 1 ch, s16le, 64.0 kbit/50.00% (ratio: 8000->16000)
Selected audio codec: [ulaw] afm: alaw (uLaw)
==========================================================================
AO: [oss] 8000Hz 1ch s16le (2 bytes per sample)
Starting playback...
Could not find matching colorspace - retrying with -vf scale...0 0
Opening video filter: [scale]
Movie-Aspect is undefined - no prescaling applied.
[swscaler @ 0xd2fec0]BICUBIC scaler, from yuv422p to yuv420p using MMX2
VO: [vdpau] 640x480 => 640x480 Planar YV12



Mir fällt beim Original auf:
30.000 fps
Movie-Aspect is undefined




--------------------------------------------------
Mencoder 2. Durchgang                             
--------------------------------------------------

MPlayer dev-SVN-r30099-4.3-openSUSE Linux 11.1 (x86_64)-Packman (C) 2000-2009 
MPlayer Teamsuccess: format: 0  data: 0x0 - 0x400d010                                 
AVI file format detected.                                                         
[aviheader] Video stream found, -vid 0                                            
[aviheader] Audio stream found, -aid 1                                            
VIDEO:  [MJPG]  640x480  24bpp  30.000 fps  6815.3 kbps (831.9 kbyte/s)           
[V] filefmt:3  fourcc:0x47504A4D  size:640x480  fps:30.000  ftime:=0.0333         
Opening video filter: [expand osd=1]                                              
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1                      
Opening video filter: [unsharp=l:5x5:0.9:c.5x5:0.1]                               
==========================================================================        
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family                  
Unsupported PixelFormat -1                                                        
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG)                        
==========================================================================        
Pos:   0.0s      2f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]            
1 duplicate frame(s)!                                                             
Pos:   0.0s      3f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]            
1 duplicate frame(s)!                                                             
Pos:   0.1s      4f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]            
1 duplicate frame(s)!                                                             
Could not find matching colorspace - retrying with -vf scale...0 [0:0]            
Opening video filter: [scale]                                                     
Movie-Aspect is undefined - no prescaling applied.                                
[swscaler @ 0xbe01a0]Lanczos scaler, from yuv422p to yuv420p using MMX2           
unsharp: 3x5:0.90 (sharpen luma)                                                  
unsharp: 3x5:0.10 (sharpen chroma)                                                
Opening video filter: [scale]                                                     
x264 [info]: using SAR=1/1                                                        
x264 [info]: using cpu capabilities: MMX2 SSE2Slow                                
x264 [info]: profile High, level 3.0                                              

1 duplicate frame(s)!
Pos:  77.8s   2341f (99%) 15.38fps Trem:   0min  18mb  A-V:0.000 [1998:0]
Flushing video frames.                                                   

Video stream: 1998.231 kbit/s  (249778 B/s)  size: 19482754 bytes  78.000 secs  
2341 frames                                                                         
x264 [info]: frame I:22    Avg QP:25.00  size: 18418                              
x264 [info]: frame P:1900  Avg QP:28.00  size:  9220                              
x264 [info]: frame B:414   Avg QP:30.00  size:  3768                              
x264 [info]: consecutive B-frames: 64.3% 35.6%  0.1%  0.0%                        
x264 [info]: mb I  I16..4:  1.2% 98.7%  0.1%                                      
x264 [info]: mb P  I16..4:  2.2% 22.8%  0.4%  P16..4: 50.4% 12.5%  4.6%  0.0%  
0.0%    skip: 7.2%                                                                   
x264 [info]: mb B  I16..4:  0.1%  0.5%  0.0%  B16..8: 38.9%  1.4%  2.0%  
direct: 9.3%  skip:47.7%  L0:39.2% L1:40.4% BI:20.4%                                       
x264 [info]: 8x8 transform intra:90.1% inter:85.2%                                
x264 [info]: coded y,uvDC,uvAC intra: 74.6% 91.6% 51.8% inter: 36.6% 61.9% 
2.0%   
x264 [info]: i16 v,h,dc,p: 22% 13% 10% 56%                                        
x264 [info]: i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 14% 29%  4%  6%  7%  6%  7%  
6%
x264 [info]: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 16% 15%  5% 10% 10% 10%  6%  
5%
x264 [info]: Weighted P-Frames: Y:20.0%
x264 [info]: ref P L0: 55.3% 17.0% 19.3%  6.8%  1.5%
x264 [info]: ref B L0: 82.6% 17.4%
x264 [info]: kb/s:2001.65



Video stream: 1998.231 kbit/s  (249778 B/s)  size: 19482754 bytes  78.000 secs 

Die 1m 18sec werden hier also noch angegeben.



mkvmerge v2.4.0 ('Fumbling Towards Ecstasy') built on Dec  3 2008 16:22:26
'/videos_nfs/digicam_nikon_test/digicam_nikon_test.x264': Using the AVC/h.264 
ES demultiplexer.
'/videos_nfs/digicam_nikon_test/digicam_nikon_test.avi.mp3': Using the MP2/MP3 
demultiplexer.
'/videos_nfs/digicam_nikon_test/digicam_nikon_test.x264' track 0: Extracted 
the aspect ratio information from the MPEG-4 layer 10 (AVC) video data and set 
the display dimensions to 640/480.
'/videos_nfs/digicam_nikon_test/digicam_nikon_test.x264' track 0: Using the 
MPEG-4 part 10 ES video output module.
'/videos_nfs/digicam_nikon_test/digicam_nikon_test.avi.mp3' track 0: Using the 
MPEG audio output module.
The file './digicam_nikon_test.x264.mkv' has been opened for writing.
Progress: 100%
The cue entries (the index) are being written...
Muxing took 3 seconds

Danach ist das Video 1m 33sec lang.




Spiele ich _nur_ das Video, also ohne Ton ab, so wird das Video _extrem_ 
schnell gespielt, wie in Zeitraffer.

Playing digicam_nikon_test.x264.
Seek failed                     
libavformat file format detected.
[h264 @ 0x156f2f0]max_analyze_duration reached
[h264 @ 0x156f2f0]Estimating duration from bitrate, this may be inaccurate
[lavf] Video stream found, -vid 0                                         
VIDEO:  [H264]  640x480  0bpp  30.000 fps    0.0 kbps ( 0.0 kbyte/s)      
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family          
Unsupported PixelFormat -1                                                
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)                 
==========================================================================
Audio: no sound                                                           
Starting playback...                                                      
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.              
VO: [vdpau] 640x480 => 640x480 Planar YV12                                
No pts value from demuxer to use for frame!                               
pts after filters MISSING                                                 
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 
pts after filters MISSING                          
No pts value from demuxer to use for frame!,?% 0 0 


Al