[FFmpeg-user] a q about units

[Gyan Doshi]

On 16-06-2020 03:26 pm, Kieran O Leary wrote:
> Hi,
>
> On Thu, Jun 11, 2020 at 6:38 PM Jim Shupert <jshupert at theppsgroup.com>
> wrote:
>
>> Friends
>> This is a rather general Q
>>
>> when I see dialogue such as
>> [matroska,webm @ 0x7f362c000b80] Read error at pos. 59270674468
>> (0xdccceb824)
>>
>> as in
>>
>> Input #0, matroska,webm, from 'pipe:':
>> Metadata:
>> ENCODER : Lavf58.29.100
>> Duration: N/A, start: 0.000000, bitrate: 12288 kb/s
>> Stream #0:0: Audio: pcm_s32le, 48000 Hz, 8 channels, s32, 12288 kb/s
>> (default)
>> Stream #0:1: Video: v210 (V210 / 0x30313256), yuv422p10le(bottom first),
>> 720x486, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
>> [matroska,webm @ 0x7f362c000b80] Read error at pos. 59270674468
>> (0xdccceb824)
>> [matroska,webm @ 0x7f362c000b80] Seek to desired resync point failed.
>> Seeking to earliest point available instead.
>> [matroska,webm @ 0x7f362c000b80] Read error at pos. 59270674468
>> (0xdccceb824)
>>
>> av_interleaved_write_frame(): Broken pipe
>> Error writing trailer of pipe:: Broken pipe
>> frame=60212 fps= 30 q=-0.0 Lq=-1.0 size=25924529kB time=00:33:29.04
>> bitrate=105709.0kbits/s speed= 1x
>> video:80224393kB audio:3578653kB subtitle:0kB other streams:0kB global
>> headers:0kB muxing
>>
>> MY Q
>> what is position 59270674468 (0xdccceb824)  ?
>> what are the units of 59270674468?
>>
> No idea, I'd like to know as well though. Here's the code that generates
> these messages:
> https://github.com/FFmpeg/FFmpeg/blob/ff3fad6b0edb13dd664403b01bc00309f035b110/libavformat/matroskadec.c#L890

It's byte offset from start of data stream.

Gyan