On 19/09/15 18:16, MrNice wrote: > > > On 19/09/15 18:02, MrNice wrote: >> >> >> On 17/09/15 14:51, MrNice wrote: >>> >>> >>> On 17/09/15 12:00, Carl Eugen Hoyos wrote: >>>> MrNice <wxcvbn2006 <at> iol.ie> writes: >>>> >>>>>> Does it also happen if you only record audio? >>>>> >>>>> Yes it happen with the command >>>>> ./ffmpeg >>>> >>>>> -f v4l2 -ts mono2abs -channel 1 -video_size 720x576 >>>>> -pix_fmt yuyv422 -thread_queue_size 512 -i /dev/video0 >>>> >>>> Does it also happen if you only provide audio >>>> input to FFmpeg? >>>> >>>> Carl Eugen >>>> >>>> >>> >>> No error in a 50 mn recording with command >>> ./ffmpeg -debug 1 -f pulse -ar 44100 -ac 2 -channel_layout stereo >>> -thread_queue_size 512 -itsoffset -0.20 -i >>> alsa_input.pci-0000_00_14.2.analog-stereo -vn -c:a pcm_s16le >>> /Store3/Test/t_`date +%Y%m%d_%H%M`.mkv >>> >> >> >> More info after long tests. >> The error >> Application provided invalid, non monotonically increasing dts to muxer >> in stream 0: >> happens after at least 30 minutes recording. ie: Last time at 33:12 >> Few seconds before or after happens warning message >> Past duration 0.xxxx too large >> >> Following this link >> http://ffmpeg.org/pipermail/ffmpeg-user/2014-December/024695.html >> I tried with -af aresample=async=1 but still I get the error with 1 >> frame dropped. >> >> [matroska @ 0x25d9de0] Writing block at offset 9113825634, size 179818, >> pts 2026200, dts 2026200, duration 40, keyframe 0 >> [matroska @ 0x25d9de0] Writing block at offset 9114005460, size 176978, >> pts 2026240, dts 2026240, duration 40, keyframe 0 >> Past duration 0.602318 too large >> *** dropping frame 50652 from stream 0 at ts 50650 >> [matroska @ 0x25d9de0] Starting new cluster at offset 9114182446 bytes, >> pts 2026280dts 2026280 >> [matroska @ 0x25d9de0] Writing block at offset 9114182463, size 180336, >> pts 2026280, dts 2026280, duration 40, keyframe 1 >> Past duration 0.601341 too large >> >> What more to do? >> >> As the errors are after 30 minutes, I could try to record by smaller >> parts. To be sure, I would like a way to stop recording if an error >> occurs. I tried -xerror but it's not working with this error. >> Any idea how to do? >> _ > > > I was wrong: One more try and I got the error at 8:07 > > I need help!!! > >
More info, hope this will help to find a fix or a workaround. So far I used a DVD player to test and I had usually the errors after 30 minutes capture. In fact the use case is with a S-VHS player. When I capture from blank tape (statics before the images appear) I get a lot of errors and frame drops, then errors stop when the images appear. Same appends as well (not always) when there is a change betweens 2 takes or when there is a drop in the tape. Is it the right behaviour? _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
