Now compiling and not leaking:

> diff --git a/fftools/ffmpeg_dec.c b/fftools/ffmpeg_dec.c
> index 5020684a28..8ca5189202 100644
> --- a/fftools/ffmpeg_dec.c
> +++ b/fftools/ffmpeg_dec.c
> @@ -141,6 +141,8 @@ void dec_free(Decoder **pdec)
>      av_freep(&dp->views_requested);
>      av_freep(&dp->view_map);
>  
> +    av_freep(&dec->subtitle_header);
> +
>      av_freep(pdec);
>  }
>  
> @@ -1621,7 +1623,11 @@ static int dec_open(DecoderPriv *dp, AVDictionary **dec_opts,
>              dp->dec_ctx->extra_hw_frames = extra_frames;
>      }
>  
> -    dp->dec.subtitle_header      = dp->dec_ctx->subtitle_header;
> +    if (dp->dec_ctx->subtitle_header) {
> +        dp->dec.subtitle_header = av_memdup(dp->dec_ctx->subtitle_header, dp->dec_ctx->subtitle_header_size);
> +        if (!dp->dec.subtitle_header)
> +            return AVERROR(ENOMEM);
> +    }
>      dp->dec.subtitle_header_size = dp->dec_ctx->subtitle_header_size;
>  
>      if (param_out) {

On 1/30/2026 1:05 PM, James Almer wrote:
> Does this fix it?
> 
>> diff --git a/fftools/ffmpeg_dec.c b/fftools/ffmpeg_dec.c
>> index 5020684a28..5dca26fbb2 100644
>> --- a/fftools/ffmpeg_dec.c
>> +++ b/fftools/ffmpeg_dec.c
>> @@ -1621,7 +1621,11 @@ static int dec_open(DecoderPriv *dp, 
>> AVDictionary **dec_opts,
>>              dp->dec_ctx->extra_hw_frames = extra_frames;
>>      }
>>
>> -    dp->dec.subtitle_header      = dp->dec_ctx->subtitle_header;
>> +    if (dp->dec_ctx->subtitle_header) {
>> +        dp->dec.subtitle_header) = av_memdup(dp->dec_ctx- 
>> >subtitle_header, dp->dec_ctx->subtitle_header_size);
>> +        if (!dp->dec.subtitle_header)
>> +            return AVERROR(ENOMEM);
>> +    }
>>      dp->dec.subtitle_header_size = dp->dec_ctx->subtitle_header_size;
>>
>>      if (param_out) {
>