Nico Sabbi wrote: > C.Y.M wrote: > >> Nico Sabbi wrote: >> >> >>> you have been very lucky not to destroy dync. You simply should use >>> >>> mencoder -of mpeg -mpegopts format=dvd:vbitrate=9000 -o >>> /home/video/$1.mpg -oac copy -ovc copy *.vdr >>> >>> >>> >> >> >> Ok, this works as well. But the sync is not right. > > > was it right with the other method? > No, it was about the same. >> I have a feeling the desync >> has to do with the cut marks I have created and processed with vdr on >> the recording. >> >> > > maybe. I will never get tired of complaining of .vdr file format: it > serves no > purpose and should be simply dropped in favor of mpeg-[tp]s > ack. >> It appears we lose ~200ms of audio for every cut mark that is created and >> processed by vdr. I have experimented with other demuxers and >> lvedemux appears >> to work as well. What I have done is count the blocks of video and >> multiply >> that by 200ms. Then use that calculation in the "time shift" switch >> here (-sh): >> >> > > generally TV stations transmit audio ~200 ms ahead of video, but mencoder > should compensate automatically for them, unless you use -mc 0 and -noskip. > These options generally make a lot of sense and don't generate frame > freezes, > but when muxing from dvb streams (with so high audio preloads) I prefer > to avoid them and > let mencoder auto-sync. > >> mkfifo file.m2v file.mpa >> cat 00*.vdr|pes2ts2 100 101|ts2ps 100 101 > file.ps >> lvedemux file.ps | lvemux -p -1 -r -sh -400 -v file.m2v -a file.mpa -o >> file.mpg >> >> Note: -400ms would be for a recording with two blocks of video (-600ms >> for 3 >> blocks, etc..). This is to compensate for the loss of audio on the cuts. >> >> >> > > I bet that if you had the original .ts you wouldn't have this problem. > try to run > > mencoder -of mpeg -mpegopts format=dvd -oac copy -ovc copy -o file.mpg > dvb://TV > > and see yourself: after few seconds audio will be automatically synced. can you tell me how to fix this? Im using a FF card, so I was hoping that mencoder could access /dev/video0 (somewhat like tvtime does). mencoder -of mpeg -mpegopts format=dvd -oac copy -ovc copy -o file.mpg dvb://TV MEncoder dev-CVS-050329-03:24-3.3.5 (C) 2000-2005 MPlayer Team CPU: Advanced Micro Devices Athlon 4 /Athlon MP/XP Palomino (Family: 6, Stepping: 2) Detected cache-line size is 64 bytes CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0 Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE 85 audio & 192 video codecs File not found: 'frameno.avi' Failed to open frameno.avi DVB CONFIGURATION IS EMPTY, exit Failed to open dvb://TV Cannot open file/device. Exiting... > >>> are you using one of those castrated packaged ffmpeg/libavcodec/mplayer? >>> If so you should compile >>> a fresh checkout of ffmpeg+mplayer >>> >>> >> >>
