mpg to avi result no sound

[fnietoelgazi]

Im trying to convert mpg to avi, the video looks just fine but there is no audio.

Im in an iBook g4 tiger

in put source:

MPG
mpeg-2, 720x576, 9100 kbps, 25 fps
ac3, 48000Hz, 448 kbps


Out put:

AVI DivX
mencoder mpeg4, 640x352, 1265 kbps, 25 fps, no crop
mp3, 48000 Hz, 128 kbps

Any thoughts?

F

[Case]

To find out why the encoder did what it did (or didn't), I'd like to see the Process Information log. You may access this log by clicking the blue "i" in the ffmpegX Progress window.

You may try demuxing and remuxing the source MPG, using MPEG Streamclip. This may fix the file in such a way that mencoder will successfully convert both video and audio, as one might expect for most MPG files. To demux, choose File > Demux > Demux to M2V and AC3. To mux back again, open the M2V, in MPEG Streamclip, it will find the AC3 file by itself, save as .mpeg (not sure why MPEG Streamclip wants the 'e'). Rename to .mpg in the Finder, to make it easier for ffmpegX to handle the file.

[fnietoelgazi]

Process Information log i cant finded now, since i closed the sesion when i did the conversion, demuxing, will try it again and come back later.

Thanks

[fnietoelgazi]

Process Information log i cant finded now, since i closed the sesion when i did the conversion, demuxing, will try it again and come back later.

Thanks

[fnietoelgazi]

Did the demuxing and tryed again with same result no audio

this is the log of the progress app


Encoding started on Wed Dec 22 14:06:42 EET 2010
MEncoder dev-CVS-051126-18:35-3.3 (C) 2000-2005 MPlayer Team
Mac OSX static build for ffmpegX
AltiVec found
CPU: PowerPC
success: format: 0 data: 0x0 - 0x7ac4cd99
MPEG-PS file format detected.
Too many video packets in the buffer: (610 in 8392400 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.
MPEG: No audio stream found -> no sound.
VIDEO: MPEG2 720x576 (aspect 3) 25.000 fps 8000.8 kbps (1000.1 kbyte/s)
[V] filefmt:2 fourcc:0x10000002 size:720x576 fps:25.00 ftime:=0.0400
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=640 h=352]
================================================== ========================
The selected video_out device is incompatible with this codec.
Also try adding the scale filter, e.g. -vf spp,scale instead of -vf spp.
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 720 x 576 (preferred colorspace: Mpeg PES)
VDecoder init failed
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
================================================== ========================
Forcing output fourcc to 58564944 [XVID]
VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
SwScaler: FAST_BILINEAR scaler, from Planar YV12 to Planar YV12 using AltiVec
videocodec: libavcodec (640x352 fourcc=58564944 [XVID])
1 duplicate frame(s)!
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
1 duplicate frame(s)!
Flushing video frames
Writing AVI index...
Fixing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Video stream: 1263.902 kbit/s (157987 B/s) size: 467725778 bytes 2960.520 secs 74013 frames
Encoding completed on Wed Dec 22 15:17:34 EET 2010

[fnietoelgazi]

It says:

MPEG: No audio stream found -> no sound.

But the original file when played on vlc has sound

Please help

F

[Case]

Try the "XviD ffmpeg" or "Divx ffmpeg" preset. The conversion will use a different engine (ffmpeg), likely with better result (audio included) for this source file.

The four presets with "XviD"/"Divx" produce very similar output, although they have different options, if you set them (in the Option tab).

(I'll test some more on mencoder and mpeg-2 source files, see what I can find.)

[fnietoelgazi]

Ok will try thanks

[fnietoelgazi]

process information with xvid ffmpeg, no results:

AVI XviD
ffmpeg xvid, 640x352, 1265 kbps, 25 fps, no crop
mp3, 48000 Hz, 128 kbps

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Fri Dec 24 17:33:23 EET 2010
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mpeg, from '/Users/federiconieto/Desktop/M2U00421.MPG':
Duration: 00:49:20.6, start: 0.226767, bitrate: 5724 kb/s
Stream #0.0[0x80]: Audio: ac3, 48000 Hz, 5:1, 448 kb/s
Stream #0.1[0x1e0], 25.00 fps(r): Video: mpeg2video, yuv420p, 720x576, 9100 kb/s
Codec type mismatch for mapping #0.0 -> #0.0

[fnietoelgazi]

same with divX ffmpeg


Encoding started on Fri Dec 24 17:35:42 EET 2010
FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
libavutil version: 49.0.0
libavcodec version: 51.9.0
libavformat version: 50.4.0
Input #0, mpeg, from '/Users/federiconieto/Desktop/M2U00421.MPG':
Duration: 00:49:20.6, start: 0.226767, bitrate: 5724 kb/s
Stream #0.0[0x80]: Audio: ac3, 48000 Hz, 5:1, 448 kb/s
Stream #0.1[0x1e0], 25.00 fps(r): Video: mpeg2video, yuv420p, 720x576, 9100 kb/s
Codec type mismatch for mapping #0.0 -> #0.0

[Case]

Stream #0.0[0x80]: Audio: ac3, 48000 Hz, 5:1, 448 kb/s
Stream #0.1[0x1e0], 25.00 fps(r): Video: mpeg2video, yuv420p, 720x576, 9100 kb/s
Codec type mismatch for mapping #0.0 -> #0.0

I see. This one is easily fixed. The version of ffmpeg used in ffmpegX cares about the stream order. That is, ffmpeg expects video as stream #0.0 and audio as stream #0.1. If the stream order is reversed, such as with your file, then ffmpeg needs to know about that. You can indicate such by setting the "Invert mapping" checkbox in the audio tab. Then Encode.

[fnietoelgazi]

Ok i did it it has audio, actually wierd thing the presents are not working at all the only preset that works is the DivX mencoder all the others when given the order to encode, encoded nothing in 2 seconds, but when i changed the encoder from the video tab suddenlly had audio in a small sample i did from my file.

Cheers and thanks for your help hope this helps some one else later on, now i have to get to work since im behind because of this problem, nice christmas it will be

F

[fnietoelgazi]

Ohh ok will try that again.

thanks m8