Reuben wrote:
I don't know whether this a transcode or mplex question, but here goes:
I used transcode to encode an AVI -- the options were:
transcode -i "/media/videos/blah.avi" -y mpeg -V -N 0x55 -b 64 -o
"blah.mpeg"
(actually being honest I used gtranscode to generate this, but hey.)
When I try to mplex the resulting m1v and mpa together, mplex breaks
with:
(DTS)=3324900
++ WARN: [mplex] Video e0: buf= 233219 frame=000874 sector=00005401
++ WARN: [mplex] Audio c0: buf= 4096 frame=001395 sector=00000127
++ WARN: [mplex] Stream e0: data will arrive too late sent(SCR)=3763800
required(DTS)=3594900++ WARN: [mplex] Video e0: buf= 233219
frame=000946 sector=00005690++ WARN: [mplex] Audio c0: buf= 4096
frame=001516 sector=00000138**ERROR: [mplex] Too many frame drops
-exiting
The process worked fine for a shorter clip, but this is a full hour long
documentary. My guess (after some googling) is that this has to do with
the bit rate on the MP3, which is pretty low (64) compared to the bit
rate (auto) on the video. Perhaps the discrepency is too wide to
multiplex together?? However, before retranscoding (an overnight deal),
do I have the right idea?
Here's the transcode infos:
INFO: Min bitrate of any one frame = 1158 bits
INFO: Max bitrate of any one frame = 393415 bits
INFO: Min bitrate over any one second = 121372 bps
INFO: Avg bitrate over any one second = 1883342 bps
INFO: Max bitrate over any one second = 6786088 bps
INFO: Total time: 20693 seconds (05:44:53), 3.09 frames/sec, 0.324
sec/frame.
Thanks
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-y mpeg invokes the module bbmpeg not mpeg2enc. bbmpeg is a quite old
(obsolete) mpeg encoder. I never used it and won't be surprised if mplex
is not happy with the files generated by bbmpeg.
To encode using mpeg2enc, use module -y mpeg2enc.
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