[MEncoder-users] 1.0rc2: Too-high bitrate problem is back
Francois Visagie
fvisagie at za.spescom.com
Tue Oct 16 22:45:33 CEST 2007
> From: Francois Visagie
> Sent: 16 October 2007 21:28
>
> Hi All,
>
> Congratulations on 1.0rc2 and all its enhancements and improvements!
>
> The previously fixed problem with bitrate deemed
> unnecessarily high not being properly handled has returned in
> 1.0rc2. In the comparison below I used the command line:
> mencoder %1 -aspect 4/3 -mc 0 -noskip -vf
> hqdn3d=2:1:2,harddup -ovc lavc -oac lavc -lavcopts
> aspect=4/3:ildct:ilme:keyint=15:vbitrate=7345:vcodec=mpeg2vide
> o:vpass=%PASS%:vrc_buf_size=1835:vrc_maxrate=9800:vstrict=0:ac
> odec=ac3:abitrate=128:psnr -of mpeg -mpegopts format=dvd:tsaf
> -o %1.1.mpg
>
> In previous versions with this problem MEncoder would crash,
> but now the symptoms are:
> * as before it reports the unnecessarily high bitrate,
> * it completes the encode (two-pass in my case),
> * the movie contains no video (except black ;-)),
> * therefore the bitrate is very much lower than specified; in
> this case it would be around 152kbps instead of around 7340, and
> * the PSNR calculations fail in pass 2
>
> As before this behaviour can be avoided by either specifying
> a lower bitrate or by enforcing a higher bitrate usage
> through increased quality.
>
> The most recent version I used where this worked correctly,
> was MEncoder Sherpya-SVN-r24537-4.2.1. I do realise that it
> may contain patches that never found their way into 1.0rc2,
> but hopefully somebody with better access than I to compiling
> SVNs can tell. During its two passes MEncoder
> Sherpya-SVN-r24537-4.2.1 displays:
>
> --------------------------------------------------------------
> --------------------------------------------------------------
> ---------------------------------
> MEncoder Sherpya-SVN-r24537-4.2.1 (C) 2000-2007 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (Family: 6,
> Model: 13, Stepping: 8)
>
> CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1
> SSE2: 1 Compiled with runtime CPU detection.
> success: format: 0 data: 0x0 - 0xf205000 AVI file format detected.
> AVI_NI: No video stream found.
> libavformat file format detected.
> [lavf] Video stream found, -vid 0
> [lavf] Audio stream found, -aid 1
> VIDEO: [dvsd] 720x576 0bpp 25.000 fps 28800.0 kbps
> (3515.6 kbyte/s) [V] filefmt:35 fourcc:0x64737664
> size:720x576 fps:25.00 ftime:=0.0400
> ==============================================================
> ============
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio:
> 192000->192000) Selected audio codec: [pcm] afm: pcm
> (Uncompressed PCM)
> ==============================================================
> ============
> PACKET SIZE: 2048 bytes, deltascr: 43885 Opening video
> filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> Opening video filter: [harddup] Opening video filter:
> [hqdn3d=2:1:2]
> ==============================================================
> ============
> Opening video decoder: [dshow] DirectShow video codecs
> Decoder supports the following YUV formats: YUY2 UYVY Decoder
> is capable of YUV output (flags 0x9)
> VDec: vo config request - 720 x 576 (preferred colorspace:
> Packed YUY2) [PP] Using codec's postprocessing, max q = 4.
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> VDec: using Packed YUY2 as output csp (no 0) Movie-Aspect is
> 1.33:1 - 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 9 -> 8 [swscaler @
> 00D80B00]SwScaler: BICUBIC scaler, from yuyv422 to yuv420p using MMX
> 2
> [swscaler @ 00D80B00]SwScaler: using 4-tap MMX scaler for
> horizontal luminance s caling [swscaler @ 00D80B00]SwScaler:
> using 4-tap MMX scaler for horizontal chrominance scaling
> [swscaler @ 00D80B00]SwScaler: using 1-tap MMX "scaler" for
> vertical scaling (YV
> 12 like)
> [swscaler @ 00D80B00]SwScaler: 720x576 -> 720x576
> videocodec: libavcodec (720x576 fourcc=3267706d [mpg2])
> VideoDecoder::SetExtAttr: registry failure Selected video
> codec: [qdv] vfm: dshow (Sony Digital Video (DV))
> ==============================================================
> ============
> Limiting audio preload to 0.4s.
> Increasing audio density to 4.
> Writing header...
> INITV: 0.200, 0.160, fps: 25.000
> Pos: 70.3s 1757f (100%) 26.26fps Trem: 0min 62mb
> A-V:0.000 [7355:127]
> Flushing video frames.
> Writing index...
>
> Overhead: 1.731% (1118973 / 64644355)
> Writing header...
>
> Video stream: 7355.351 kbit/s (919418 B/s) size: 64616759
> bytes 70.280 secs
> 1757 frames
>
> Audio stream: 128.000 kbit/s (15999 B/s) size: 1124864
> bytes 70.304 secs
> PSNR: Y:39.74, Cb:45.17, Cr:44.30, All:40.86 MEncoder
> Sherpya-SVN-r24537-4.2.1 (C) 2000-2007 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (Family: 6,
> Model: 13, Stepping: 8)
>
> CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1
> SSE2: 1 Compiled with runtime CPU detection.
> success: format: 0 data: 0x0 - 0xf205000 AVI file format detected.
> AVI_NI: No video stream found.
> libavformat file format detected.
> [lavf] Video stream found, -vid 0
> [lavf] Audio stream found, -aid 1
> VIDEO: [dvsd] 720x576 0bpp 25.000 fps 28800.0 kbps
> (3515.6 kbyte/s) [V] filefmt:35 fourcc:0x64737664
> size:720x576 fps:25.00 ftime:=0.0400
> ==============================================================
> ============
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio:
> 192000->192000) Selected audio codec: [pcm] afm: pcm
> (Uncompressed PCM)
> ==============================================================
> ============
> PACKET SIZE: 2048 bytes, deltascr: 43885 Opening video
> filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> Opening video filter: [harddup] Opening video filter:
> [hqdn3d=2:1:2]
> ==============================================================
> ============
> Opening video decoder: [dshow] DirectShow video codecs
> Decoder supports the following YUV formats: YUY2 UYVY Decoder
> is capable of YUV output (flags 0x9)
> VDec: vo config request - 720 x 576 (preferred colorspace:
> Packed YUY2) [PP] Using codec's postprocessing, max q = 4.
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> VDec: using Packed YUY2 as output csp (no 0) Movie-Aspect is
> 1.33:1 - 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 9 -> 8 [swscaler @
> 00D80B00]SwScaler: BICUBIC scaler, from yuyv422 to yuv420p using MMX
> 2
> [swscaler @ 00D80B00]SwScaler: using 4-tap MMX scaler for
> horizontal luminance s caling [swscaler @ 00D80B00]SwScaler:
> using 4-tap MMX scaler for horizontal chrominance scaling
> [swscaler @ 00D80B00]SwScaler: using 1-tap MMX "scaler" for
> vertical scaling (YV
> 12 like)
> [swscaler @ 00D80B00]SwScaler: 720x576 -> 720x576
> videocodec: libavcodec (720x576 fourcc=3267706d [mpg2])
> VideoDecoder::SetExtAttr: registry failure Selected video
> codec: [qdv] vfm: dshow (Sony Digital Video (DV))
> ==============================================================
> ============
> Limiting audio preload to 0.4s.
> Increasing audio density to 4.
> Writing header...
> INITV: 0.200, 0.160, fps: 25.000
> Pos: 70.3s 1757f (100%) 27.02fps Trem: 0min 62mb
> A-V:0.000 [7347:127]
> Flushing video frames.
> Writing index...
>
> Overhead: 1.725% (1113390 / 64561874)
> Writing header...
>
> Video stream: 7347.016 kbit/s (918377 B/s) size: 64543538
> bytes 70.280 secs
> 1757 frames
>
> Audio stream: 128.000 kbit/s (15999 B/s) size: 1124864
> bytes 70.304 secs
> PSNR: Y:39.85, Cb:45.30, Cr:44.35, All:40.97
> --------------------------------------------------------------
> --------------------------------------------------------------
> ---------------------------------
>
> By comparison, 1.0rc2 displays:
> --------------------------------------------------------------
> --------------------------------------------------------------
> ---------------------------------
> MEncoder 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (Family: 6,
> Model: 13, Stepping: 8)
>
> CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1
> SSE2: 1 Compiled with runtime CPU detection.
> success: format: 0 data: 0x0 - 0xf205000 AVI file format detected.
> AVI_NI: No video stream found.
> libavformat file format detected.
> [lavf] Video stream found, -vid 0
> [lavf] Audio stream found, -aid 1
> VIDEO: [dvsd] 720x576 0bpp 25.000 fps 28800.0 kbps
> (3515.6 kbyte/s) [V] filefmt:35 fourcc:0x64737664
> size:720x576 fps:25.00 ftime:=0.0400
> ==============================================================
> ============
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio:
> 192000->192000) Selected audio codec: [pcm] afm: pcm
> (Uncompressed PCM)
> ==============================================================
> ============
> PACKET SIZE: 2048 bytes, deltascr: 43885 Opening video
> filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> Opening video filter: [harddup] Opening video filter:
> [hqdn3d=2:1:2]
> ==============================================================
> ============
> Opening video decoder: [dshow] DirectShow video codecs
> Decoder supports the following YUV formats: YUY2 UYVY Decoder
> is capable of YUV output (flags 0x9)
> VDec: vo config request - 720 x 576 (preferred colorspace:
> Packed YUY2) [PP] Using codec's postprocessing, max q = 4.
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> VDec: using Packed YUY2 as output csp (no 0) Movie-Aspect is
> 1.33:1 - 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 9 -> 8 [swscaler @
> 00D24D00]SwScaler: BICUBIC scaler, from yuyv422 to yuv420p using MMX
> 2
> [swscaler @ 00D24D00]SwScaler: using 4-tap MMX scaler for
> horizontal luminance s caling [swscaler @ 00D24D00]SwScaler:
> using 4-tap MMX scaler for horizontal chrominance scaling
> [swscaler @ 00D24D00]SwScaler: using 1-tap MMX "scaler" for
> vertical scaling (YV
> 12 like)
> [swscaler @ 00D24D00]SwScaler: 720x576 -> 720x576
> videocodec: libavcodec (720x576 fourcc=3267706d [mpg2])
> VideoDecoder::SetExtAttr: registry failure Selected video
> codec: [qdv] vfm: dshow (Sony Digital Video (DV))
> ==============================================================
> ============
> Limiting audio preload to 0.4s.
> Increasing audio density to 4.
> Writing header...
> INITV: 0.200, 0.160, fps: 25.000
> Pos: 70.3s 1757f (100%) 38.69fps Trem: 0min 11mb
> A-V:0.000 [1350:127]
> Flushing video frames.
> Writing index...
>
> Overhead: 4.106% (480318 / 11697090)
> Writing header...
>
> Video stream: 1350.076 kbit/s (168759 B/s) size: 11860419
> bytes 70.280 secs
> 1757 frames
>
> Audio stream: 128.000 kbit/s (15999 B/s) size: 1124864
> bytes 70.304 secs
> PSNR: Y:50.50, Cb:57.04, Cr:54.50, All:51.64 MEncoder
> 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (Family: 6,
> Model: 13, Stepping: 8)
>
> CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1
> SSE2: 1 Compiled with runtime CPU detection.
> success: format: 0 data: 0x0 - 0xf205000 AVI file format detected.
> AVI_NI: No video stream found.
> libavformat file format detected.
> [lavf] Video stream found, -vid 0
> [lavf] Audio stream found, -aid 1
> VIDEO: [dvsd] 720x576 0bpp 25.000 fps 28800.0 kbps
> (3515.6 kbyte/s) [V] filefmt:35 fourcc:0x64737664
> size:720x576 fps:25.00 ftime:=0.0400
> ==============================================================
> ============
> Opening audio decoder: [pcm] Uncompressed PCM audio decoder
> AUDIO: 48000 Hz, 2 ch, s16le, 1536.0 kbit/100.00% (ratio:
> 192000->192000) Selected audio codec: [pcm] afm: pcm
> (Uncompressed PCM)
> ==============================================================
> ============
> PACKET SIZE: 2048 bytes, deltascr: 43885 Opening video
> filter: [expand osd=1]
> Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
> Opening video filter: [harddup] Opening video filter:
> [hqdn3d=2:1:2]
> ==============================================================
> ============
> Opening video decoder: [dshow] DirectShow video codecs
> Decoder supports the following YUV formats: YUY2 UYVY Decoder
> is capable of YUV output (flags 0x9)
> VDec: vo config request - 720 x 576 (preferred colorspace:
> Packed YUY2) [PP] Using codec's postprocessing, max q = 4.
> Could not find matching colorspace - retrying with -vf scale...
> Opening video filter: [scale]
> VDec: using Packed YUY2 as output csp (no 0) Movie-Aspect is
> 1.33:1 - 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 9 -> 8 [swscaler @
> 00D24D00]SwScaler: BICUBIC scaler, from yuyv422 to yuv420p using MMX
> 2
> [swscaler @ 00D24D00]SwScaler: using 4-tap MMX scaler for
> horizontal luminance s caling [swscaler @ 00D24D00]SwScaler:
> using 4-tap MMX scaler for horizontal chrominance scaling
> [swscaler @ 00D24D00]SwScaler: using 1-tap MMX "scaler" for
> vertical scaling (YV
> 12 like)
> [swscaler @ 00D24D00]SwScaler: 720x576 -> 720x576
> videocodec: libavcodec (720x576 fourcc=3267706d [mpg2])
> [mpeg2video @ 00D299C0][lavc rc] Using all of requested
> bitrate is not necessary for this video with these parameters.
> VideoDecoder::SetExtAttr: registry failure Selected video
> codec: [qdv] vfm: dshow (Sony Digital Video (DV))
> ==============================================================
> ============
> Limiting audio preload to 0.4s.
> Increasing audio density to 4.
> Writing header...
> INITV: 0.200, 0.160, fps: 25.000
> Pos: 70.3s 1757f (100%) 44.97fps Trem: 0min 2mb
> A-V:0.000 [152:127]
> Flushing video frames.
> Writing index...
>
> Overhead: 15.106% (369824 / 2448224)
> Writing header...
>
> Video stream: 152.669 kbit/s (19083 B/s) size: 1341193
> bytes 70.280 secs 17
> 57 frames
>
> Audio stream: 128.000 kbit/s (15999 B/s) size: 1124864
> bytes 70.304 secs
> PSNR: Y:1.#J, Cb:1.#J, Cr:1.#J, All:1.#J
> --------------------------------------------------------------
> --------------------------------------------------------------
> ---------------------------------
Hi All,
When I continued testing, I discovered that the above description requires
two corrections. The first is that I'm using Windows XP SP2.
The second is that both versions mentioned actually exhibit the five
symptoms listed, but surprisingly not necessarily with the same command
lines (options) using the same input file! The command line above, for
example, works for SVN-r24537 but fails with 1.0rc2, and another command
line would have the reverse effect.
AND, the REALLY surprising thing is, so far it seems that for both versions
the problem can be properly overcome (i.e. not lowering bitrate etc.) by
having present the following mencoder.conf file!
[default]
font="C:\Program Files\mplayer\mplayer\subfont.ttf"
subfont-blur=0
subfont-outline=1
subfont-text-scale=3
I haven't yet tested whether it's the mere presence of a valid (or invalid)
mencoder.conf file, or a particular setting that causes the difference in
behaviour, but when I restored this file that had been present during all my
previously successful SVN-r24537 testing, both versions started behaving
successfully again.
I'm happy to do further testing if required, let me know.
Kind regards,
Francois
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