[FFmpeg-devel] [PATCH] avformat/mpegts: initialize max_packet_size when sub-demuxer

[Gyan Doshi]

On 2022-02-08 04:33 pm, Gyan Doshi wrote:
>
>
> On 2022-02-07 09:34 am, Gyan Doshi wrote:
>>
>>
>> On 2022-02-07 03:59 am, Marton Balint wrote:
>>>
>>>
>>> On Sat, 5 Feb 2022, Gyan Doshi wrote:
>>>
>>>> bca30570d2 added a user option to set max_packet_size replacing
>>>> a hardcoded value. This had a side-effect of leaving the field
>>>> set to 0 when packet demuxing is carried out from another demuxer
>>>> using avpriv functions, which could lead to demux failure.
>>>>
>>>> Hardcoded max_packet_size inside avpriv_mpegts_parse_open to
>>>> 2048000 to avoid this. Value chosen to be 10x that of default value
>>>> to accommodate large payloads.
>>>
>>> I don't understand why the default is different from the normal 
>>> mpegts case. Large payloads can happen there as well, and previously 
>>> it was assumed that splitting is OK, because it will be parsed anyway.
>> The option was added because MPEG-TS allows any codec to be carried 
>> as a private stream and when demuxing that, the parser isn't 
>> inserted, even when forcing a decoder, hence the need to not have 
>> split packets. In this case, the user can't tune the value, so I went 
>> with an expansive one.
>
> Plan to push tomorrow.

Pushed as b6bb6b9f22ff519644b16dcc71a4b92ee3979c1b

Regards,
Gyan