[MPlayer-users] copy DVD, then compression, produces "jumpy " and pixelated avi?

Yang teddyyyy123 at gmail.com
Sat Dec 27 22:43:05 CET 2014 

thanks Reimar.

another clue is that I got this issue with one movie so far, but it works
fine with some other movies. in comparison, I found excessively large
number of the following error messages when I compressed the problematic
movie (after it's been "-ovc copy"'ed in the first stage), while those
other movies do not show these error messages

Pos:  14.1s    428f (46%) 397.03fps Trem:   0min   3mb  A-V:-0.052 [801:174]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  14.3s    433f (48%) 392.57fps Trem:   0min   3mb  A-V:-0.052 [844:175]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  14.5s    438f (49%) 386.58fps Trem:   0min   3mb  A-V:-0.052 [908:176]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  14.6s    443f (51%) 383.22fps Trem:   0min   3mb  A-V:-0.052 [934:176]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  14.8s    448f (52%) 379.66fps Trem:   0min   3mb  A-V:-0.052 [984:176]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  15.0s    453f (53%) 376.56fps Trem:   0min   4mb  A-V:-0.052
[1035:177]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  15.1s    458f (56%) 374.49fps Trem:   0min   4mb  A-V:-0.052
[1052:177]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  15.3s    463f (57%) 371.29fps Trem:   0min   4mb  A-V:-0.052
[1088:178]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  15.5s    468f (58%) 368.79fps Trem:   0min   4mb  A-V:-0.052
[1125:178]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  15.6s    473f (60%) 366.67fps Trem:   0min   4mb  A-V:-0.052
[1136:179]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  15.8s    478f (61%) 364.33fps Trem:   0min   4mb  A-V:-0.052
[1170:179]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  16.0s    483f (62%) 361.80fps Trem:   0min   4mb  A-V:-0.052
[1204:180]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  16.1s    488f (64%) 360.15fps Trem:   0min   4mb  A-V:-0.052
[1215:180]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  16.3s    493f (65%) 358.02fps Trem:   0min   4mb  A-V:-0.052
[1248:181]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  16.5s    498f (66%) 355.71fps Trem:   0min   4mb  A-V:-0.052
[1280:181]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  16.6s    503f (69%) 354.23fps Trem:   0min   4mb  A-V:-0.052
[1290:182]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  16.8s    508f (70%) 352.04fps Trem:   0min   4mb  A-V:-0.052
[1323:182]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  17.0s    513f (71%) 350.17fps Trem:   0min   4mb  A-V:-0.052
[1353:183]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  17.2s    518f (73%) 348.82fps Trem:   0min   4mb  A-V:-0.052
[1366:183]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  17.3s    523f (74%) 346.82fps Trem:   0min   4mb  A-V:-0.052
[1401:184]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  17.5s    528f (75%) 344.65fps Trem:   0min   4mb  A-V:-0.052
[1428:184]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  17.7s    533f (78%) 342.77fps Trem:   0min   4mb  A-V:-0.052
[1440:184]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  17.8s    538f (79%) 340.94fps Trem:   0min   4mb  A-V:-0.052
[1475:185]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  18.0s    543f (80%) 339.38fps Trem:   0min   4mb  A-V:-0.052
[1499:185]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  18.2s    548f (83%) 337.85fps Trem:   0min   4mb  A-V:-0.052
[1511:186]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  18.3s    553f (84%) 336.17fps Trem:   0min   4mb  A-V:-0.052
[1543:186]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  18.5s    558f (85%) 334.93fps Trem:   0min   4mb  A-V:-0.052
[1565:186]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  18.7s    563f (87%) 333.73fps Trem:   0min   4mb  A-V:-0.052
[1575:187]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  18.8s    568f (89%) 332.36fps Trem:   0min   4mb  A-V:-0.052
[1605:187]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  19.0s    573f (90%) 331.21fps Trem:   0min   4mb  A-V:-0.052
[1620:187]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  19.2s    578f (92%) 330.10fps Trem:   0min   4mb  A-V:-0.052
[1628:188]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  19.3s    583f (93%) 329.01fps Trem:   0min   4mb  A-V:-0.052
[1656:188]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  19.5s    588f (95%) 327.58fps Trem:   0min   4mb  A-V:-0.052
[1683:188]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
[mpeg2video @ 0x7f5bf36eda20]warning: first frame is no keyframe
Pos:  19.7s    593f (100%) 327.08fps Trem:   0min   4mb  A-V:-0.052
[1703:188]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  19.8s    598f (100%) 326.24fps Trem:   0min   4mb  A-V:-0.052
[1746:188]
[mpeg2video @ 0x7f5bf36eda20]releasing zombie picture
Pos:  19.9s    601f (100%) 325.57fps Trem:   0min   4mb  A-V:-0.019
[1771:188]


Thanks
Yang

On Sat, Dec 27, 2014 at 7:42 AM, Reimar Döffinger <Reimar.Doeffinger at gmx.de>
wrote:

> On Sat, Dec 27, 2014 at 12:59:52AM -0800, Yang wrote:
> > I copied down my DVD by -ovc copy , so that I have an exact high-quality
> > copy of the original file.
>
> A lot can, and often will, go wrong with -ovc copy.
>
> > but the second batch of output produces very low quality, the images are
> > highly pixelated, and the big pixels seem to jump quickly; the actual
> file
> > size being generated is much much smaller than the original DVD file.
> but I
> > did manage to get the bit rate up by using mencoder options, to about
> 2000k
> > bits/sec. but even at this high bitrate, the same problem still occurs.
>
> For these use cases using bitrate is usually a bad idea. One-pass
> bitrate encoding usually will result in occasionally bad bitrate not
> matter how high you go.
> You'll rather want "constant quality". That doesn't quite exist, but
> the vqscale=... (for most codecs, 2 is a good value) or crf=... (for x264,
> pick something around maybe 18) come close.
>
> > that is wrong? I was thinking maybe on the second copy, libdvdcss is not
> > automatically invoked so the result is garbled ? I checked libdvdread/css
> > is installed correctly
>
> CSS is not involved or required after the initial copy, decrypted is
> decrypted, no point in doing that twice.
> Probably your -ovc copy didn't produce a working file.
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