Hello, I modified the mpeg2enc command line I use to encode my Cinelerra videos. Now, it's:
/usr/bin/yuvcorrect -v 0 -T INTERLACED_BOTTOM_FIRST | /usr/bin/yuvscaler -v 0 -I ACTIVE_702x560+8+8 -M BICUBIC | /usr/bin/mpeg2enc -v 0 -r 32 -4 1 -2 1 -D 10 -g 6 -G 15 -q 4 -b 9600 -f 8 -o $1 The audio stream is now encoded at 224 kbps. I use mplex: mplex -f 8 -V 02.ac3 02.m2v -o 02_r.mpeg And unfortunately, I now get a frame data under-runs, which I did not have before. The problem occurs only if I use the -q option in the mpeg2enc I tried the following mplex commands, with no more luck: mplex -f 8 02.ac3 02.m2v -o 02_r.mpeg mplex -f 8 -V -r 10404 02.ac3 02.m2v -o 02_r.mpeg The error message is: INFO: [mplex] mplex version 1.8.0 (2.2.4 $Date: 2005/08/28 17:50:54 $) INFO: [mplex] File 02.ac3 looks like an AC3 Audio stream. INFO: [mplex] File 02.m2v looks like an MPEG Video stream. INFO: [mplex] Video stream 0: profile 8 selected - ignoring non-standard options! INFO: [mplex] Found 1 audio streams and 1 video streams INFO: [mplex] Selecting dvdauthor DVD output profile INFO: [mplex] Multiplexing video program stream! INFO: [mplex] Scanning for header info: AC3 Audio stream 00 (02.ac3) INFO: [mplex] AC3 frame size = 896 INFO: [mplex] AC3 AUDIO STREAM: INFO: [mplex] Bit rate : 28672 bytes/sec (224 kbit/sec) INFO: [mplex] Frequency : 48000 Hz INFO: [mplex] Scanning for header info: Video stream e0 (02.m2v) INFO: [mplex] VIDEO STREAM: e0 INFO: [mplex] Frame width : 720 INFO: [mplex] Frame height : 576 INFO: [mplex] Aspect ratio : 4:3 display INFO: [mplex] Picture rate : 25.000 frames/sec INFO: [mplex] Bit rate : 9600000 bits/sec INFO: [mplex] Vbv buffer size : 229376 bytes INFO: [mplex] CSPF : 0 INFO: [mplex] SYSTEMS/PROGRAM stream: INFO: [mplex] rough-guess multiplexed stream data rate : 10032096 INFO: [mplex] target data-rate specified : 10080000 INFO: [mplex] Setting specified specified data rate: 10080000 INFO: [mplex] Run-in Sectors = 89 Video delay = 13019 Audio delay = 16619 INFO: [mplex] New sequence commences... INFO: [mplex] Audio bd: buf= 0 frame=000000 sector=00000000 INFO: [mplex] Video e0: buf= 0 frame=000000 sector=00000000 ++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=477476 required(DTS)=477419 ++ WARN: [mplex] Audio bd: buf= 11869 frame=000173 sector=00000077 ++ WARN: [mplex] Video e0: buf= 79782 frame=000129 sector=00000447 INFO: [mplex] STREAM bd completed @ frame 17656. INFO: [mplex] Scanned to end AU 14125 INFO: [mplex] STREAM e0 completed @ frame 14125. INFO: [mplex] Multiplex completion at SCR=50848768. INFO: [mplex] Audio bd: buf= 5376 frame=017656 sector=00007848 INFO: [mplex] Video e0: buf= 191896 frame=014125 sector=00322340 INFO: [mplex] AUDIO_STATISTICS: bd INFO: [mplex] Audio stream length 15820672 bytes. INFO: [mplex] Frames : 17657 INFO: [mplex] BUFFERING min 35 Buf max 10339 INFO: [mplex] VIDEO_STATISTICS: e0 INFO: [mplex] Video Stream length: 651793159 bytes INFO: [mplex] Sequence headers: 942 INFO: [mplex] Sequence ends : 1 INFO: [mplex] No. Pictures : 14126 INFO: [mplex] No. Groups : 942 INFO: [mplex] No. I Frames : 942 avg. size 68465 bytes INFO: [mplex] No. P Frames : 13184 avg. size 44546 bytes INFO: [mplex] No. B Frames : 0 avg. size 0 bytes INFO: [mplex] Average bit-rate : 9228000 bits/sec INFO: [mplex] Peak bit-rate : 9768800 bits/sec INFO: [mplex] BUFFERING min 17 Buf max 235543 **ERROR: [mplex] MUX STATUS: Frame data under-runs detected! Any clue? Thank you. Nicolas. ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
