[FFmpeg-devel] [PATCH] nvenc set slice number to 1 to improve encoding quality

[Agatha Hu]

在 2015/12/5 3:26, Timo Rothenpieler 写道:
>> --- libavcodec/nvenc.c | 3 +++ 1 file changed, 3 insertions(+)
>>
>> diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c index
>> 43b8e78..b8f7f91 100644 --- a/libavcodec/nvenc.c +++
>> b/libavcodec/nvenc.c @@ -762,6 +762,9 @@ static av_cold int
>> nvenc_encode_init(AVCodecContext *avctx) } }
>>
>> +    ctx->encode_config.encodeCodecConfig.h264Config.sliceMode =
>> 3; +
>> ctx->encode_config.encodeCodecConfig.h264Config.sliceModeData = 1;
>
> It's missing a check if we are encoding h264 or hevc.
> Does it have any negative sideeffects, or does it just increase the
> image quality?
>
>> /* when there're b frames, set dts offset */ if
>> (ctx->encode_config.frameIntervalP >= 2) ctx->last_dts = -2;
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>
Yes, need add a check
Just aimed to increase image quality. Nvidia are doing some interal 
tests to tune the quality
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