From: "\"zhilizhao(赵志立)\"" <quinkblack@foxmail.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [Internet]Re: [PATCH v2 5/7] avcodec/mediacodecenc: remove the strategy to create DTS
Date: Wed, 4 Jan 2023 19:31:05 +0800
Message-ID: <tencent_E64B9C6CE1445B26343180BC34B93E5B5709@qq.com> (raw)
In-Reply-To: <167282741433.4503.2492097415207155862@lain.khirnov.net>
> On Jan 4, 2023, at 18:16, Anton Khirnov <anton@khirnov.net> wrote:
>
> Does this mean the encoder will produce packets with dts=AV_NOPTS_VALUE?
MediaCodec should not encode B frames by default, so dts = pts by default.
B frames can be enabled explicitly, in that case dts is AV_NOPTS_VALUE.
Android system’s MP4 muxer works very hard to recreate dts to workaround
the limitation of MediaCodec API. It create ‘valid’ but almost useless
files with a lot of jitters.
>
> --
> Anton Khirnov
>
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next prev parent reply other threads:[~2023-01-04 11:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20221207093122.553668-1-quinkblack@foxmail.com>
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 1/7] avcodec/mediacodecenc: make each encoder has its own option Zhao Zhili
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 2/7] avcodec/mediacodecenc: add bitrate_mode option Zhao Zhili
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 3/7] avcodec/mediacodecenc: add level option Zhao Zhili
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 4/7] avcodec/mediacodecenc: use bsf to handle crop Zhao Zhili
2022-12-09 17:22 ` [FFmpeg-devel] [PATCH v3 3/7] " Zhao Zhili
2022-12-12 15:27 ` Tomas Härdin
2022-12-13 3:20 ` "zhilizhao(赵志立)"
2022-12-14 17:08 ` Tomas Härdin
2022-12-14 17:19 ` Tomas Härdin
2022-12-14 17:37 ` Zhao Zhili
2022-12-14 17:43 ` Zhao Zhili
2022-12-20 18:24 ` Tomas Härdin
2022-12-21 7:17 ` "zhilizhao(赵志立)"
2022-12-21 10:06 ` Tomas Härdin
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 5/7] avcodec/mediacodecenc: remove the strategy to create DTS Zhao Zhili
2022-12-12 15:28 ` Tomas Härdin
2022-12-13 2:55 ` "zhilizhao(赵志立)"
2022-12-14 17:31 ` Tomas Härdin
2023-01-04 10:16 ` Anton Khirnov
2023-01-04 11:31 ` "zhilizhao(赵志立)" [this message]
2023-01-04 13:59 ` [FFmpeg-devel] [Internet]Re: " Tomas Härdin
2023-01-04 14:46 ` Zhao Zhili
2023-01-04 15:15 ` Anton Khirnov
2023-01-04 16:12 ` Zhao Zhili
2023-01-05 8:07 ` Anton Khirnov
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 6/7] avcodec/mediacodecenc: add max-bframes support Zhao Zhili
2022-12-07 9:31 ` [FFmpeg-devel] [PATCH v2 7/7] avcodec/mediacodecenc: add pts_as_dts option Zhao Zhili
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