[FFmpeg-devel] [PATCH] doc/muxers: correct decribe of hls_enc_key and hls_enc_iv

[Steven Liu]

> 2020年12月9日 下午12:22，Gyan Doshi <ffmpeg at gyani.pro> 写道：
> 
> 
> 
> On 09-12-2020 06:52 am, liuqi05 wrote:
>> From: Steven Liu <liuqi05 at kuaishou.com>
>> 
>> because hls_enc_key and hls_enc_iv get 16byte char
>> for example:
>> -hls_enc_key 0123456789abcdef -hls_enc_iv abcdefghijklmnop
>> 
>> Signed-off-by: liuqi05 <liuqi05 at kuaishou.com>
>> ---
>>  doc/muxers.texi | 4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>> 
>> diff --git a/doc/muxers.texi b/doc/muxers.texi
>> index 179b923951..5907fd0ba0 100644
>> --- a/doc/muxers.texi
>> +++ b/doc/muxers.texi
>> @@ -831,7 +831,7 @@ When enabled every segment generated is encrypted and the encryption key
>>  is saved as @var{playlist name}.key.
>>    @item -hls_enc_key @var{key}
>> -Hex-coded 16byte key to encrypt the segments, by default it
>> +16byte key to encrypt the segments, by default it
> 
> 16-byte or 16-octet (what RFC 8216 uses)
8216 said " [AES_128] encryption uses 16-octet keys.  If the KEYFORMAT of an EXT-
   X-KEY tag is "identity", the Key file is a single packed array of 16
   octets in binary format."
> 
>>  is randomly generated.
>>    @item -hls_enc_key_url @var{keyurl}
>> @@ -839,7 +839,7 @@ If set, @var{keyurl} is prepended instead of @var{baseurl} to the key filename
>>  in the playlist.
>>    @item -hls_enc_iv @var{iv}
>> -Hex-coded 16byte initialization vector for every segment instead
>> +16byte initialization vector for every segment instead
> 
> same
>>  of the autogenerated ones.
>>    @item hls_segment_type @var{flags}
> 
> Regards,
> Gyan
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Thanks

Steven Liu