[FFmpeg-devel] [PATCH] avcodec: rewrite gif muxing and encoding

[Paul B Mahol]

On 12/11/18, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 2018-12-11 17:37 GMT+01:00, Paul B Mahol <onemda at gmail.com>:
>> On 12/11/18, Paul B Mahol <onemda at gmail.com> wrote:
>>> On 12/11/18, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>>>> 2018-12-11 17:18 GMT+01:00, Paul B Mahol <onemda at gmail.com>:
>>>>> On 12/11/18, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>>>>>> 2018-12-11 16:02 GMT+01:00, Paul B Mahol <onemda at gmail.com>:
>>>>>>> Now "-c copy" works.
>>>>>>
>>>>>> Please mention ticket #6640.
>>>>>>
>>>>>> When using the commands there, the output file has a different
>>>>>> byte at position 0xbb06 (0x0a -> 0x05), do you know why?
>>>>>
>>>>> Dunno, md5 of decoded output is same. I fixed some artifacts in last
>>>>> patch
>>>>
>>>> md5sum of original and decoded file is different here.
>>>
>>> Test latest patch.
>
> With the latest patch, md5sum of original and remuxed file are different
> here.
>

Of course, you found single byte change.

>> Test -f md5 - not md5sum.
>
> How can you compare a file and FFmpeg's output with -f md5?

You do not know? How so?