[FFmpeg-devel] [PATCH v2] ffmpeg: add per-stream input option drop_changed

[Gyan Doshi]

On 2025-03-23 10:07 am, Gyan Doshi wrote:
>
>
> On 2025-03-16 11:39 pm, Gyan Doshi wrote:
>>
>>
>> On 2025-03-16 11:12 pm, James Almer wrote:
>>> On 3/16/2025 4:18 AM, Gyan Doshi wrote:
>>>> This is a replacement in ffmpeg for the deprecated avcodec flag 
>>>> AV_CODEC_FLAG_DROPCHANGED.
>>>>
>>>> This option is meant to be used when the filtergraph should not be
>>>> reinited upon input parameter changes as that leads to loss of state
>>>> in the filtergraph potentially leading to broken or aborted output,
>>>> e.g. inserting of silence with first_pts specified in aresample.
>>>>
>>>> Generally useful to avoid corrupted yet decodable packets in live
>>>> streaming inputs.
>>>>
>>>> This option when enabled takes precedence over reinit_filters
>>>
>>> How does this differ from simply setting reinit_filter to false, if 
>>> what you want is the filtergraph to not be reinitialized?
>>
>> av_buffersrc_add_frame_flags will return an error for all audio 
>> frames with differing parameters, as no filters are yet capable of 
>> handling them. ultimately leading to program exit.
>> Same is true for video frames barring a handful of filters like scale 
>> or idet ..etc
>
> Plan to push tomorrow.

Pushed as cbbc927a67f142a02bfc5d047c03587599ee5b55

Regards,
Gyan