On 2/21/15 8:05 AM, Deron wrote:
On 2/15/15 5:44 AM, Anshul wrote:
attached another cleaned patch.
-Anshul
Not sure if I should be posting here, privately, or do the user list
since it is an unaccepted patch... This patch applies cleanly to
ffmpeg git of that day, and with minor adjustment to current git, but
either crashes the same for me right away. Here is the back trace from
gdb:
Program received signal SIGSEGV, Segmentation fault.
__GI___libc_realloc (oldmem=0x70, bytes=8) at malloc.c:2977
2977 malloc.c: No such file or directory.
(gdb) bt
#0 __GI___libc_realloc (oldmem=0x70, bytes=8) at malloc.c:2977
#1 0x00007ffff7609b99 in avformat_new_stream (s=s@entry=0xe2dbc0,
c=c@entry=0x0) at libavformat/utils.c:3655
#2 0x00007ffff75451c4 in hls_mux_init (s=0x6787c0) at
libavformat/hlsenc.c:194
#3 hls_write_header (s=0x6787c0) at libavformat/hlsenc.c:490
#4 0x00007ffff75999ec in avformat_write_header (s=s@entry=0x6787c0,
options=0x6a9948) at libavformat/mux.c:406
#5 0x0000000000424c00 in transcode_init () at ffmpeg.c:3096
#6 0x0000000000407581 in transcode () at ffmpeg.c:3815
#7 main (argc=13, argv=0x7fffffffe5a8) at ffmpeg.c:4022
The command (I've tried all sorts of combinations. If I don't provide
a subtitle stream, it does not crash. Otherwise it does. Unpatched can
generate a webvtt from the subtitle stream without crashing.)
ffmpeg -loglevel debug -f lavfi -i movie=out.ts\[out0+subcc\] -f hls
-hls_segment_filename /var/www/html/stream/kota/v.low.%d.ts
-hls_subtitle_path /var/www/html/stream/kota/ -y
/var/www/html/stream/kota/v.low.m3u8
I did find the problem. The patch does not properly initialize
hls->vtt_oformat (etc) if you provide the "-hls_segment_filename"
parameter as I have done.
Deron
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