Guys, I did some screencaptures at high resolution (1280x720) and notice that during the recording of the screencapture, I'd get frame drops. "Frames Behind" would usually be zero, but for short, five second periods, increase to 10 or 20. Of course, when I then tried to mux the captured video and audio with mplex, I would get the dreaded: **ERROR: [mplex] Too many frame drops -exiting
Here is the detail of the mplex output. [EMAIL PROTECTED] cygnus]# mplex -f 3 -b 2000 -r 19100 cygnusShow2effectA.mp3 testmissframes.m2v -o test.ps INFO: [mplex] mplex version 1.9.0 (2.2.7 $Date: 2006/02/01 22:23:01 $) INFO: [mplex] File cygnusShow2effectA.mp3 looks like an MPEG Audio stream. INFO: [mplex] File testmissframes.m2v looks like an MPEG Video stream. INFO: [mplex] Found 1 audio streams and 1 video streams INFO: [mplex] Selecting generic MPEG2 output profile INFO: [mplex] Multiplexing video program stream! INFO: [mplex] Scanning for header info: Audio stream c0 (cygnusShow2effectA.mp3) INFO: [mplex] MPEG AUDIO STREAM: c0 INFO: [mplex] Audio version : 1.0 INFO: [mplex] Layer : 2 INFO: [mplex] CRC checksums : no INFO: [mplex] Bit rate : 49152 bytes/sec (384 kbit/sec) INFO: [mplex] Frequency : 48000 Hz INFO: [mplex] Mode : 0 stereo INFO: [mplex] Mode extension : 0 INFO: [mplex] Copyright bit : 0 no copyright INFO: [mplex] Original/Copy : 0 copy INFO: [mplex] Emphasis : 0 none INFO: [mplex] Scanning for header info: Video stream e0 (testmissframes.m2v) INFO: [mplex] VIDEO STREAM: e0 INFO: [mplex] Frame width : 1280 INFO: [mplex] Frame height : 720 INFO: [mplex] Aspect ratio : 16:9 display INFO: [mplex] Picture rate : 29.970 frames/sec INFO: [mplex] Bit rate : 18300000 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 : 19077648 INFO: [mplex] target data-rate specified : 19100000 INFO: [mplex] Setting specified specified data rate: 19100000 INFO: [mplex] Run-in delay = 39039 Video delay = 39039 Audio delay = 42042 INFO: [mplex] New sequence commences... INFO: [mplex] Audio c0: 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)=11720744 required(DTS)=11720709 ++ WARN: [mplex] Audio c0: buf= 1649 frame=005408 sector=00003089 ++ WARN: [mplex] Video e0: buf= 134905 frame=003890 sector=00123665 ++ WARN: [mplex] Stream e0: data will arrive too late ... sent(SCR)=11743905 **ERROR: [mplex] Too many frame drops -exiting My computer is pretty strong (dual, quad core Dell, 1.6Ghz/CPU). I noticed that I am not I/O bound (no I/O wait occurring) and I have plenty of headroom on each CPU. Max CPU during the screencapture is 35-40%. At this point, I think the bottleneck is the speed or throughput video card, but I'm not sure. A couple questions: 1) is there a program that would alert me when I have too many frame drops? 2) can frame drops be patched by any other programs? 3) is my bottleneck the speed/throughput of my video card? thanks for listening, scott _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
