Hallo Well for the first try doing it by hand can be helpful.
> Well after a few hours of running the script: > #!/bin/ksh > [ $# -lt 2 ] && echo 'Usage: $0 <file.mp4> <file.mpg>' && exit 1 > mkfifo stream.yuv > cat stream.yuv | mpeg2enc -f 8 -o video.m2v & > mplayer -nosound -noframedrop -vo yuv4mpeg $1 > > # The thing slightly missing is the audio decoding/ encoding: > mplayer -vo null -ao pcm:fast $1 > cat audiodump.wav | mpeg2enc -r 48000 -o audio.mp2 > > # and than mplex it together with: > mplex -f 8 audio.mp2 video.m2v -o $2 > > > it ended with the following error messages: > Playing /sdb4/Misc/Media/Jesus_Christ_SuperStar.mp4. > libavformat file format detected. > [lavf] stream 0: video (h264), -vid 0 > [lavf] stream 1: audio (aac), -aid 0, -alang und > VIDEO: [H264] 450x360 24bpp 25.000 fps 379.7 kbps (46.4 kbyte/s) One problem here is the screen resolution you need to scale it to a DVD compliant size, that can be done with yuvscaler (-O DVD) for example, you than probably need to set the aspect ratio correct (mpeg2enc -a option) and if everything goes wrong the correct framerate (yuvfps) > Clip info: > major_brand: mp42 > minor_version: 0 > compatible_brands: isommp42 > creation_time: 2012-08-26 15:53:18 > Load subtitles in /sdb4/Misc/Media/ > ========================================================================== > Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family > Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264) > ========================================================================== > ========================================================================== > Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders > AUDIO: 44100 Hz, 2 ch, s16le, 96.0 kbit/6.80% (ratio: 11999->176400) > Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio)) > ========================================================================== > [AO PCM] File: audiodump.wav (WAVE) > PCM: Samplerate: 44100Hz Channels: Stereo Format s16le > [AO PCM] Info: Faster dumping is achieved with -benchmark -vc null -vo > null -ao pcm:fast > [AO PCM] Info: To write WAVE files use -ao pcm:waveheader (default). > AO: [pcm] 44100Hz 2ch s16le (2 bytes per sample) > Starting playback... > Unsupported PixelFormat 61 > Unsupported PixelFormat 53 > Movie-Aspect is undefined - no prescaling applied. > VO: [null] 450x360 => 450x360 Planar YV12 > A: 2.6 V: 2.3 A-V: 0.281 ct: 0.040 0/ 0 11% 0% 0.8% 53 0 > > > ************************************************ > **** Your system is too SLOW to play this! **** > ************************************************ > > /> the SLOW message is strange as mplayer has no problems playing this > mp4 file!/ > > Possible reasons, problems, workarounds: > - Most common: broken/buggy _audio_ driver > - Try -ao sdl or use the OSS emulation of ALSA. > - Experiment with different values for -autosync, 30 is a good start. > > > Exiting... (End of file) > **ERROR: [mpeg2enc] -r option requires arg 0 .. 32 > > INFO: [mplex] mplex version 2.0.0 (2.2.7 $Date: 2010/03/13 13:05:07 $) > **ERROR: [mplex] Unable to open file audio.mp2 for reading. So to find the problem please check if the audio file was generated correct with mpg123 or mplayer. You should get a output like that for mpg123: mpg123 audio.mp2 ... Playing MPEG stream 1 of 1: audio_48.mp2 ... MPEG 1.0 layer II, 224 kbit/s, 48000 Hz stereo and for mplayer: ... Opening audio decoder: [mp3lib] MPEG layer-2, layer-3 AUDIO: 48000 Hz, 2 ch, s16le, 224.0 kbit/14.58% (ratio: 28000->192000) From the log I'd think the mpeg2enc command is broken. I'd guess that you nedd to add at least the yuvscaler command so the command looks something like that: cat stream.yuv | yuvscaler -O DVD | mpeg2enc -f 8 -o video.m2v & If you don't get a video file I need the output of the command. And if multiplexing fails also the output of mplex. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowl...@utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://ad.doubleclick.net/clk;258768047;13503038;j? http://info.appdynamics.com/FreeJavaPerformanceDownload.html _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
