Re: [FFmpeg-devel] avformat/mkv: add mkv tags for AVS2 and AVS3 codecs.

[Ze Yuan <naturalwalker@hotmail.com>]

From: Andreas Rheinhardt
Sent: Tuesday, February 1, 2022 12:43 PM
To: ffmpeg-devel@ffmpeg.org
Subject: Re: [FFmpeg-devel] avformat/mkv: add mkv tags for AVS2 and AVS3 codecs.

>Ze Yuan:
>> From babcceafbd30eff677b2366a0c470d31c503bed1 Mon Sep 17 00:00:00 2001
>> From: TianBo Zheng <naturalwalker@hotmail.com>
>> Date: Mon, 10 Jan 2022 11:18:56 +0000
>> Subject: [PATCH] avformat/mkv: add mkv tags for AVS2 and AVS3 codecs.
>>
>> MKV codec mappings:
>>   V_AVS2 and V_AVS3 (https://github.com/ietf-wg-cellar/matroska-specification/blob/master/codec_specs.md)
>>
>> Encoding tool:
>>   Ffmpeg with AVS2/AVS3 enabled: https://github.com/xatabhk/FFmpeg-avs2-avs3/releases
>>   Command line:
>>
>>              ffmpeg -i xxxx.mp4 -vcodec avs2 -acodec copy xxxx_avs2.mkv
>>              ffmpeg -i xxxx.mp4 -vcodec avs2 -speed_level 4 -acodec copy xxxx_avs2.mkv`
>>
>> Players:
>>   (1) Ffmpeg with avs2/avs3 enabled: (https://github.com/xatabhk/FFmpeg-avs2-avs3/releases):
>>     Command line:
>>
>>         ffplay xxxx_avs2.mkv
>>     ffplay xxxx_avs3.mkv
>>   (2) VLC 3.0.x with AVS2/AVS3 enabled: https://github.com/xatabhk/vlc-3.0-avs2-avs3/releases
>>   (3) Mpc-hc 1.9.x with AVS2/AVS3 enabled: https://gitee.com/zhengtianbo/cavs-avs2-avs3_decoder_added_to_mpc_hc/releases
>>
>> AVS2/AVS3 MKV samples:
>>   https://github.com/xatabhk/avs2-avs3-video-samples
>> Signed-off-by: TianBo Zheng naturalwalker@hotmail.com
>> ---
>> libavformat/matroska.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/libavformat/matroska.c b/libavformat/matroska.c
>> index 7c56aba403..90d94b65bf 100644
>> --- a/libavformat/matroska.c
>> +++ b/libavformat/matroska.c
>> @@ -78,6 +78,8 @@ const CodecTags ff_mkv_codec_tags[]={
>>      {"S_HDMV/TEXTST"    , AV_CODEC_ID_HDMV_TEXT_SUBTITLE},
>>
>>      {"V_AV1"            , AV_CODEC_ID_AV1},
>> +    {"V_AVS2"           , AV_CODEC_ID_AVS2},
>> +    {"V_AVS3"           , AV_CODEC_ID_AVS3},
>>      {"V_DIRAC"          , AV_CODEC_ID_DIRAC},
>>      {"V_FFV1"           , AV_CODEC_ID_FFV1},
>>      {"V_MJPEG"          , AV_CODEC_ID_MJPEG},
> --
>> 2.19.1

>Sorry for having ignored this for so long.
> actually wanted to merge your AVS2 patch long ago (see
>https://github.com/mkver/FFmpeg/commit/18c52e7493b1c1f11de059fbcbf9d17635e5945d),
>but I remember that your mails were weird and I managed to recreate a
>Chinese name out of them, but I was unsure if this was the correct one
>(namely 郑天波). So I didn't apply it. If it is correct, then please
>tell me if you prefer this name or TianBo Zheng.

>- Andreas

I think both work for me.
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