[FFmpeg-user] Application provided invalid, non monotonically increasing dts to muxer in stream

[MrNice]

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?