[FFmpeg-user] Errors and artefacts when decoding a .h264 file from security camera

[Robert Krüger]

On Mon, Sep 14, 2020 at 9:53 AM Robert Krüger <krueger at lesspain.software>
wrote:

>
>
> On Sat, Sep 12, 2020 at 3:43 PM Carl Eugen Hoyos <ceffmpeg at gmail.com>
> wrote:
>
>> Am Mi., 9. Sept. 2020 um 17:18 Uhr schrieb Robert Krüger
>> <krueger at lesspain.software>:
>> >
>> > Hi,
>> >
>> > I have a security camera file that gives me decoding errors which are
>> very
>> > likely the reason for several macroblocks being broken in the resulting
>> > video (by far not all, you can still recognize the motive).
>>
>> You forgot to mention that the file contains images from several
>> cameras...
>>
>
> I am assuming this is how the system records the feed from multiple
> cameras, at least that's what I was told by the people who provided the
> file. So, it's a recording device that records a signal that apparently
> comes from a king of mixer, to a file. No processing was done on my side.
>
>
>>
>> Paul sent a patch.
>>
>
> Awesome, I will check it out!
>
>

OK, so it's really two video streams in the file. Cool. The patch works
perfectly, thanks!