Re: [FFmpeg-devel] [PATCH] avformat/movenc: disallow buggy flags combination

From: Gyan Doshi <ffmpeg@gyani.pro>
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] [PATCH] avformat/movenc: disallow buggy flags combination
Date: Mon, 26 May 2025 22:45:44 +0530
Message-ID: <8fe79ea6-f5eb-452e-be4c-949c09d4221e@gyani.pro> (raw)
In-Reply-To: <9f74ff58-fb8b-563b-28cd-a1eb14e1190@martin.st>

On 2025-05-26 06:17 pm, Martin Storsjö wrote:
> On Mon, 26 May 2025, Gyan Doshi wrote:
>
>> Usage of hybrid_fragmented and faststart together can result in files 
>> with
>> loss of sync and bitstream parsing errors upon playback.
>> ---
>> libavformat/movenc.c | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
>> index 4bc8bd1b2a..9392ba5370 100644
>> --- a/libavformat/movenc.c
>> +++ b/libavformat/movenc.c
>> @@ -7731,6 +7731,12 @@ static int mov_init(AVFormatContext *s)
>>                       FF_MOV_FLAG_FRAG_EVERY_FRAME))
>>         mov->flags |= FF_MOV_FLAG_FRAGMENT;
>>
>> +    if (mov->flags & FF_MOV_FLAG_HYBRID_FRAGMENTED &&
>> +        mov->flags & FF_MOV_FLAG_FASTSTART) {
>> +        av_log(s, AV_LOG_ERROR, "Setting both hybrid_fragmented and 
>> faststart is not supported.\n");
>> +        return AVERROR(EINVAL);
>> +    }
>> +
>
> Ok

Thanks. Pushed as c79bce92b8407199b6e70205393411650e4342ca

Regards,
Gyan

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