[MPlayer-users] FAAD error lines in h264 encode and part of audio lost

Miroslav Rovis m.rovis at inet.hr
Mon Feb 22 05:46:54 CET 2010


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Hi every good ole mencoder users!

mencoder input.avi -o output_p1.avi -profile h264_profile

(p1 in output_p1.avi is because I keep the divx2pass.log and may later
use it for output_p2.avi)

The conf file ~user/.mplayer/mencoder.conf contains the relevant profile:

[h264_profile]
profile=h264_profile
profile-desc="h264_profile_description"
x264encopts=pass=1:turbo=1:frameref=1:subq=1:bframes=1:partitions=all:qp_step=4:qcomp=0.7:keyint=300

I get files that are well compressed, but lose sync at the end of the
stream.
And, what is worse, in the newly coded file, the end portion of the
audio of about 2 seconds is plain lost.
Now I don't mind that, to get the file play well synced, I need to
play it with:

mplayer -delay 0.120 output_p1.avi

But the loss of information at end is what I do mind!

It shows in the mplayer output as:

...
VIDEO:  [h264]  720x576  24bpp  25.000 fps  872.5 kbps (106.5 kbyte/s)
Clip info:                                                           
 Software: MEncoder SVN-r29796-4.3.4                                 
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family         
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)                
==========================================================================
==========================================================================
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)        
AUDIO: 48000 Hz, 2 ch, s16le, 192.0 kbit/12.50% (ratio: 23994->192000)   
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))  
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)                        
Starting playback...                                                     
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.?% 0 0
VO: [xv] 720x576 => 768x576 Planar YV12                           
...
FAAD: error: Unable to find ADTS syncword, trying to resync!3.2% 102 0
FAAD: Failed to decode frame: Unable to find ADTS syncword            
FAAD: error: Unable to find ADTS syncword, trying to resync!3.2% 102 0
FAAD: Failed to decode frame: Unable to find ADTS syncword            
...
... (dozens of these FAAD lines, I spare you)
...
A: 247.9 V: 248.8 A-V: -0.988 ct:  0.099 6222/6222 34% 10%  2.6% 102 0

Exiting... (End of file)

What's the remedy to this annoyance, clever people?
Thanx!


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