[FFmpeg-user] Where's the error?

[Laine]

> On Sep 17, 2024, at 1:30 PM, Laine <llee040 at sbcglobal.net> wrote:
> 
> I use ffmpeg on my Mac without understanding much of it. I'd like to be able to determine where in the video occasional reported errors occur so I can view the affected passage in the output. My questions about the following command and output are, "do the errors reported include the time in the video where the error occurred, and if so, how do I calculate that time in hours, minutes, and seconds so I can view its containing passage in the encoded video?" 
> 
> The errors I'm referring to in the output are
> 
> [h264 @ 0x127f33070] concealing 858 DC, 858 AC, 858 MV errors in B frame0.4kbits/s dup=76 drop=0 speed=8.83x    
> [h264 @ 0x127f44130] left block unavailable for requested intra mode
> [h264 @ 0x127f44130] error while decoding MB 0 30, bytestream 49191
> [h264 @ 0x127f44130] concealing 4609 DC, 4609 AC, 4609 MV errors in P frame
> [vist#0:0/h264 @ 0x127f05730] [dec:h264 @ 0x127f06d30] corrupt decoded frame
> 
> 
> 
> 
> Sincerely,
> L. Lee
> 


Wondering if I phrased my question in a way that didn't make sense. Trying again.

Is there a way to ascertain the time stamp of a point at or near the video passage that caused this output during the encoding operation?

[h264 @ 0x127f33070] concealing 858 DC, 858 AC, 858 MV errors in B frame0.4kbits/s dup=76 drop=0 speed=8.83x    
[h264 @ 0x127f44130] left block unavailable for requested intra mode
[h264 @ 0x127f44130] error while decoding MB 0 30, bytestream 49191
[h264 @ 0x127f44130] concealing 4609 DC, 4609 AC, 4609 MV errors in P frame
[vist#0:0/h264 @ 0x127f05730] [dec:h264 @ 0x127f06d30] corrupt decoded frame
Thanks.

Sincerely,
L. Lee