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From: Nathan K. <nat...@sp...> - 2005-01-17 16:59:36
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Damjan Lango wrote: > I have a JVC grdvl557 camcorder and when I play (with playdv) the > grabbed dv (with dvgrab) I get full of errors like: > > asf 00:00:00.04 2005-01-12 01:43:27 7f b7 08 12 1/48 # audio > block/sample failure for 0 blocks, 32 samples of 1280 > > and the audio is skipping, but this skipping is actually caused by X > and gnome-terminal using almost 100% of cpu just displaying the > errors, so if I just redirect them to /dev/null (2>/dev/null) then i > don't hear any audio problems, so are these error messages valid? Or > can they be safely ignored? Hi Damjan, see these threads: http://sourceforge.net/mailarchive/forum.php?thread_id=6067089&forum_id=5458 http://sourceforge.net/mailarchive/message.php?msg_id=10436594 Essentially, I had the same problem with a JVC GRDVL28 (PAL), and it is considered to be a bug with JVC's DV implimentation, not libdv. I ended up ripping DV with: dvgrab --format raw or cat /dev/dv1384 > raw.dv #press play on dv camera #stop when finished and CTRL-C (using appropriate device name for your kernel) I have an Athlon XP 3000, and didn't have any problem with the output of these error lines, but when playing back I found minor audio sync issues. I experimented with decoding the raw DV using ffmpeg's DV decoder to see if handled it any differently, but didn't have time to find a conclusive result. -Nathan |