Re: ogg to mpeg

Martin Guy wrote:
> On 6/10/08, Carl Karsten <[email protected]> wrote:
>> I am trying to convert some of the
>> http://www.thesourceshow.org/node/11
>>   files into something cinelerra can edit (mpeg or dv)
> For best quality you'd be better off converting to an uncompressed
> format, rather than recompressing them. cinelerra will only uncompress
> them again to edit them - to YUV I believe, so that would be the best
> target. You got lotsa disk space, yes? :)

yup. uncompressed, or lossless?  I am thinking .dv (what dvgrab creates) is what 
you are suggesting.

> 
>>  [export_ffmpeg.so] Reading configuration from './ffmpeg.cfg'
>>  [export_ffmpeg.so] Reading config section 'mpeg4' from './ffmpeg.cfg'
> What's in ffmpeg.cfg?

carl@dell29:~/temp/cintut$ cat ffmpeg.cfg
[h264]
vqblur = 0.0
vstrict = -1
[mjpeg]
[mpeg4]


> 
>>  -rw-r--r-- 1 carl carl      2056 2008-06-10 14:52 episode001_lg.mpeg
>>  -rw-r--r-- 1 carl carl 301429605 2006-12-23 11:03 episode001_lg.ogg
> 
>>  [transcode] encoded 0 frames (0 dropped, 0 cloned), clip length   0.00 s
> I would guess this is your main clue
> 
> Can you do some tests to narrow it down to whether it is all ogg
> theora decoding, ogg theora decoding of those specific videos, or mpeg
> encoding that is not working for you? e.g.
> - Can you play the videos successfully with some other player?

plays fine:

carl@dell29:~/temp/cintut$ mplayer -identify episode001_lg.ogg
MPlayer 1.0rc2-4.2.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing episode001_lg.ogg.
ID_VIDEO_ID=0
[Ogg] stream 0: video (Theora v3.2.0), -vid 0
ID_AUDIO_ID=0
[Ogg] stream 1: audio (Vorbis), -aid 0
Ogg file format detected.
VIDEO:  [theo]  720x480  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
ID_FILENAME=episode001_lg.ogg
ID_DEMUXER=ogg
ID_VIDEO_FORMAT=theo
ID_VIDEO_BITRATE=0
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=480
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=vrbs
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
ID_LENGTH=232257.13
xscreensaver_disable: Could not find XScreenSaver window.
GNOME screensaver disabled
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
[theora @ 0x8939870]Missing extradata!
Could not open codec.
VDecoder init failed :(
Opening video decoder: [theora] Theora/VP3
VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.36:1 - prescaling to correct movie aspect.
ID_VIDEO_ASPECT=1.3636
VO: [xv] 720x480 => 720x528 Planar YV12
Selected video codec: [theora] vfm: theora (Theora (free, reworked VP3))
==========================================================================
ID_VIDEO_CODEC=theora
==========================================================================
Forced audio codec: mad
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
ID_AUDIO_BITRATE=128000
ID_AUDIO_RATE=44100
ID_AUDIO_NCH=2
Selected audio codec: [ffvorbis] afm: ffmpeg (FFmpeg Vorbis decoder)
==========================================================================
AO: [pulse] Failed to connect to server: Invalid argument
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
ID_AUDIO_CODEC=ffvorbis
Starting playback...
A:  26.7 V:  26.7 A-V:  0.001 ct: -0.011 800/800 14%  4%  1.5% 0 0

> - If so, can you transcode them to other fomats,

nope -y raw, same thing.

> and can you transcode
> other ogg theora files to mpeg?

The only ones I have are the 4 I wget from that page.  all 4 behave the same.

> - Can you encode other video sources to mpeg successfully with your
> ffmpeg.cfg settings?

yes
carl@dell29:~/temp/cintut$ transcode -i 
/mnt/nfs/cw1b/carl/html/temp/Jun08/a/chirick2.mov -o test.mpeg -y ffmpeg -F 
mpeg4 --encode_fields p
transcode v1.0.2 (C) 2001-2003 Thomas Oestreich, 2003-2004 T. Bitterberg
[transcode] (probe) suggested AV correction -D 0 (0 ms) | AV 0 ms | 0 ms
[transcode] auto-probing source 
/mnt/nfs/cw1b/carl/html/temp/Jun08/a/chirick2.mov (ok)
[transcode] V: import format    | unknown QuickTime (V=mov|A=mov)
[transcode] V: import frame     | 720x480  1.50:1
[transcode] V: bits/pixel       | 0.174
[transcode] V: decoding fps,frc | 29.970,4
[transcode] V: Y'CbCr           | YV12/I420
[transcode] A: import format    | 0x1     PCM          [48000,16,2]
[transcode] A: export format    | 0x55    MPEG layer-3 [48000,16,2]  128 kbps
[transcode] V: encoding fps,frc | 29.970,4
[transcode] A: bytes per frame  | 6408 (6406.400000)
[transcode] A: adjustment       | -1600@1000
[transcode] V: IA32/AMD64 accel | sse2 (sse2 sse mmxext mmx asm C)
tc_memcpy: using sse for memcpy
[transcode] V: video buffer     | 10 @ 720x480
[import_mov.so] v0.1.2 (2002-05-16) (video) * | (audio) *
[export_ffmpeg.so] v0.3.13 (2004-08-03) (video) Lavc1d.51.38.0 | (audio) 
MPEG/AC3/PCM
[import_mov.so] codec=mp4a, rate=48000 Hz, bits=16, channels=2, samples=334036992
[import_mov.so] VIDEO: codec=mp4v, fps=29.970, width=720, height=480, frames=208566
[export_ffmpeg.so] Using FFMPEG codec 'mpeg4' (FourCC 'DIVX', MPEG4 compliant 
video).
[export_ffmpeg.so]: INFO: No profile selected
[export_ffmpeg.so] Reading configuration from './ffmpeg.cfg'
[export_ffmpeg.so] Reading config section 'mpeg4' from './ffmpeg.cfg'
[export_ffmpeg.so]: INFO: Starting 1 thread(s)
[export_ffmpeg.so]: INFO: Set display aspect ratio to input
Audio: using new version
Audio: using lame-3.97
encoding frames [000000-000455],  77.86 fps, EMT: 0:00:15, ( 0| 0| 9)


> 
> More strategic ideas:
> Do you have the most recent stable version of transcode?

probably not - it's whatever I had on my box.


> Can you decode the ogg into something uncompressed using another tool,
> like the example decoders supplied by xiph.org, then use that?

looks like it:
carl@dell29:~/temp/cintut$ mencoder episode001_lg.ogg -o episode001_lg.dv -oac 
lavc -ovc libdv
MEncoder 2:1.0~rc2-0ubuntu13 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
success: format: 0  data: 0x0 - 0x11f77365
[Ogg] stream 0: video (Theora v3.2.0), -vid 0
[Ogg] stream 1: audio (Vorbis), -aid 0
Ogg file format detected.
VIDEO:  [theo]  720x480  24bpp  29.970 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:18  fourcc:0x6F656874  size:720x480  fps:29.97  ftime:=0.0334
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [ffvorbis] afm: ffmpeg (FFmpeg Vorbis decoder)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
[theora @ 0x8814710]Missing extradata!
Could not open codec.
VDecoder init failed :(
Opening video decoder: [theora] Theora/VP3
VDec: vo config request - 720 x 480 (preferred colorspace: Planar YV12)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.36:1 - prescaling to correct movie aspect.
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 4
SwScaler: reducing / aligning filtersize 1 -> 1
SwScaler: reducing / aligning filtersize 5 -> 4
[swscaler @ 0x880f730]SwScaler: BICUBIC scaler, from yuv420p to yuyv422 using MMX2
[swscaler @ 0x880f730]SwScaler: using 4-tap MMX scaler for horizontal luminance 
scaling
[swscaler @ 0x880f730]SwScaler: using 4-tap MMX scaler for horizontal 
chrominance scaling
[swscaler @ 0x880f730]SwScaler: using n-tap MMX scaler for vertical scaling (BGR)
[swscaler @ 0x880f730]SwScaler: 720x480 -> 720x480
Selected video codec: [theora] vfm: theora (Theora (free, reworked VP3))
==========================================================================

Skipping frame!
Pos:   0.0s      1f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.000 [0:0]
Skipping frame!
Pos:   0.0s      2f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.003 [0:0]
Skipping frame!
Pos:   0.0s      3f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.005 [0:0]
Skipping frame!
Pos:   0.0s      4f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.007 [0:0]
Skipping frame!
Pos:   0.0s      5f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.009 [0:0]
Skipping frame!
Pos:   0.0s      6f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.010 [0:0]
Skipping frame!
Writing header...7f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.012 [0:0]
ODML: vprp aspect is 16384:12014.
Writing header...
ODML: vprp aspect is 16384:12014.
Pos:   0.0s      8f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.015 [0:0]
6 duplicate frame(s)!
Pos:   0.3s      9f ( 0%)  0.00fps Trem:   0min   0mb  A-V:0.018 [0:0]
1 duplicate frame(s)!
Pos:   1.2s     36f ( 0%) 20.99fps Trem:   0min   0mb  A-V:0.067 [23176:223]
Skipping frame!
Pos:   8.1s    245f ( 0%) 18.15fps Trem:  80min 9797mb  A-V:0.033 [27945:223]

quick tests shows it plays.

Carl K