[FFmpeg-devel] [PATCH] avformat/hlsenc: refine EXT-X-BYTERANGE support for segments

[Michael Niedermayer]

On Mon, Sep 12, 2016 at 03:01:24PM +0800, Steven Liu wrote:
> refine EXT-X-BYTERANGE tag,
> the spec link:
> https://tools.ietf.org/html/draft-pantos-http-live-streaming-19#section-4.3.2.2
> 
> the apple doc:
> https://developer.apple.com/library/ios/technotes/tn2288/_index.html#//apple_ref/doc/uid/DTS40012238-CH1-BYTE_RANGE_SUPPORT_FOR_SEGMENTS
> 
> command line:
> ./ffmpeg -i ~/Movies/objectC/a.mp4 -c copy -f hls -hls_time 7
> -hls_list_size 100 -hls_segment_size 2500000 -t 40 output-test.m3u8
> 
> output:
> 
> localhost:ffmpeg liuqi$ ll *.ts ;cat output-test.m3u8
> -rw-r--r--  1 liuqi  staff  2792176  9 12 14:44 output-test0.ts
> -rw-r--r--  1 liuqi  staff  3112528  9 12 14:44 output-test3.ts
> -rw-r--r--  1 liuqi  staff  3377420  9 12 14:44 output-test6.ts
> -rw-r--r--  1 liuqi  staff  1228016  9 12 14:44 output-test7.ts
>  #EXTM3U
>  #EXT-X-VERSION:4
>  #EXT-X-TARGETDURATION:10
>  #EXT-X-MEDIA-SEQUENCE:0
>  #EXTINF:9.021000,
>  #EXT-X-BYTERANGE:1334988 at 0
>  output-test0.ts
>  #EXTINF:3.000000,
>  #EXT-X-BYTERANGE:721356 at 1334988
>  output-test0.ts
>  #EXTINF:3.000000,
>  #EXT-X-BYTERANGE:735832 at 2056344
>  output-test0.ts
>  #EXTINF:6.000000,
>  #EXT-X-BYTERANGE:1645940 at 0
>  output-test3.ts
>  #EXTINF:3.000000,
>  #EXT-X-BYTERANGE:715152 at 1645940
>  output-test3.ts
>  #EXTINF:3.000000,
>  #EXT-X-BYTERANGE:751436 at 2361092
>  output-test3.ts
>  #EXTINF:9.000000,
>  #EXT-X-BYTERANGE:3377420 at 0
>  output-test6.ts
>  #EXTINF:3.960000,
>  #EXT-X-BYTERANGE:1228016 at 0
>  output-test7.ts
>  #EXT-X-ENDLIST
>  localhost:ffmpeg liuqi$
> 
>  ticket-id: #5839
> 
> Signed-off-by: Steven Liu <lingjiujianke at gmail.com>
> ---
>  libavformat/hlsenc.c | 38 +++++++++++++++++++++++++++++++++-----
>  1 file changed, 33 insertions(+), 5 deletions(-)
> 
> diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
> index a376312..08995f6 100644
> --- a/libavformat/hlsenc.c
> +++ b/libavformat/hlsenc.c
> @@ -104,6 +104,7 @@ typedef struct HLSContext {
>      double duration;      // last segment duration computed so far, in
> seconds
>      int64_t start_pos;    // last segment starting position
>      int64_t size;         // last segment size
> +     int64_t max_seg_size; // every segment file max size
>      int nb_entries;
>      int discontinuity_set;
> 

fatal: corrupt patch at line 11

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

You can kill me, but you cannot change the truth.
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