MMT andd ffmpeg frame drops for SVCD-why?

[ruggerjvd]

trying to make an scvd, ad I get these errors:

INFO: [mplex] Selecting SVCD output profile
INFO: [mplex] Multiplexing video program stream!
INFO: [mplex] Scanning for header info: Video stream e0 (/Users/johnd/Movies/newmovie.m2v)
INFO: [mplex] VIDEO STREAM: e0
INFO: [mplex] Frame width : 720
INFO: [mplex] Frame height : 480
INFO: [mplex] Aspect ratio : 4:3 display
INFO: [mplex] Picture rate : 29.970 frames/sec
INFO: [mplex] Bit rate : 7000000 bits/sec
INFO: [mplex] Vbv buffer size : 229376 bytes
INFO: [mplex] CSPF : 0
INFO: [mplex] Scanning for header info: Audio stream c0 (/Users/johnd/Movies/audio.mp2)
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 : 28672 bytes/sec (224 kbit/sec)
INFO: [mplex] Frequency : 44100 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] SYSTEMS/PROGRAM stream:
INFO: [mplex] rough-guess multiplexed stream data rate : 7339048
INFO: [mplex] target data-rate specified : 2788800
++ WARN: [mplex] Target data rate lower than computed requirement!
++ WARN: [mplex] N.b. a 20% or so discrepancy in variable bit-rate
++ WARN: [mplex] streams is common and harmless provided no time-outs will occur
INFO: [mplex] Run-in Sectors = 78 Video delay = 46800 Audio delay = 46800
INFO: [mplex] New sequence commences...
INFO: [mplex] Video e0: buf= 235520 frame=000000 sector=00000000
INFO: [mplex] Audio c0: buf= 4096 frame=000000 sector=00000000
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=3786600 required(DTS)=3786135
++ WARN: [mplex] Video e0: buf= 191811 frame=001245 sector=00002690
++ WARN: [mplex] Audio c0: buf= 3730 frame=001591 sector=00000507
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=4960800 required(DTS)=4960308
++ WARN: [mplex] Video e0: buf= 215936 frame=001636 sector=00003864
++ WARN: [mplex] Audio c0: buf= 3649 frame=002090 sector=00000666
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=5140800 required(DTS)=5059407
++ WARN: [mplex] Video e0: buf= 233219 frame=001669 sector=00004150
++ WARN: [mplex] Audio c0: buf= 4096 frame=002134 sector=00000680
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=5320800 required(DTS)=5182530
++ WARN: [mplex] Video e0: buf= 233219 frame=001710 sector=00004433
++ WARN: [mplex] Audio c0: buf= 4096 frame=002187 sector=00000697
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=5500800 required(DTS)=5356704
++ WARN: [mplex] Video e0: buf= 233219 frame=001768 sector=00004710
++ WARN: [mplex] Audio c0: buf= 4096 frame=002260 sector=00000720
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=5680800 required(DTS)=5533881
++ WARN: [mplex] Video e0: buf= 233219 frame=001827 sector=00004986
++ WARN: [mplex] Audio c0: buf= 4096 frame=002335 sector=00000744
++ WARN: [mplex] Stream c0: data will arrive too late sent(SCR)=5860800 required(DTS)=5750975
++ WARN: [mplex] Video e0: buf= 235520 frame=001900 sector=00005256
++ WARN: [mplex] Audio c0: buf= 1800 frame=002429 sector=00000774
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=6040800 required(DTS)=5918265
++ WARN: [mplex] Video e0: buf= 233224 frame=001956 sector=00005534
++ WARN: [mplex] Audio c0: buf= 4096 frame=002498 sector=00000796
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=6220800 required(DTS)=6095442
++ WARN: [mplex] Video e0: buf= 233219 frame=002014 sector=00005810
++ WARN: [mplex] Audio c0: buf= 4096 frame=002574 sector=00000820
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=6400800 required(DTS)=6251598
++ WARN: [mplex] Video e0: buf= 233219 frame=002066 sector=00006089
++ WARN: [mplex] Audio c0: buf= 4096 frame=002639 sector=00000841
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=6580800 required(DTS)=6353700
++ WARN: [mplex] Video e0: buf= 233219 frame=002100 sector=00006375
++ WARN: [mplex] Audio c0: buf= 4096 frame=002683 sector=00000855
**ERROR: [mplex] Too many frame drops -exiting
[moodme-cmt1-c4-24-25-163-164:MissingMpegTools.app/Contents/Resources] johnd%

[havema-1]

7000000 bits/sec is too much for a SVCD (should be 2500000 bits/sec). NTSC SCVD is 480x480, not 720x480. Are you trying to encode XSVCD? Encoding with a 2500 kb/s and 480x480 should help for plain SVCD. Set mpeg2enc and mplex for -f 4 for SVCD or -f 5 for XSVCD.

mpeg2enc and mplex should use the same video-buffer -- in SVCD I have used 224 kB (which seems to be the upper limit for (X)SVCD, although some apps and at least older versions of mplex have used 230 kB).

http://www.sjoki.uta.fi/~shmhav/MediaPipe_and_SVCD.txt
http://www.sjoki.uta.fi/~shmhav/SVCD_on_a_Macintosh.txt
http://www.sjoki.uta.fi/~shmhav/MediaPipe_templates.sit

https://sourceforge.net/docman/display_doc.php?docid=3456&group_id=5776

[ruggerjvd]

No. I'm jsut trying an svcd. I don't even know where the 70000000 kb/s came from I think I used the QT encoder, I don't even remember where I had the option to adjust the settings.