Comments on: iPhone HTTP Streaming with FFMpeg and an Open Source Segmenter

By: startx

startx — Wed, 04 Jan 2012 16:07:13 +0000

i came across the same problem, a segmentation fault when hitting the 40th segment.

interestingly m3u8 segmenter has the same problem ( at segment 50 )

any ideas whats causing that?

By: Padma

Padma — Tue, 03 Jan 2012 23:21:54 +0000

Hi,

Are there any tools available to parse the master index file and the alternate index files for the URLs? I am working something that requires to parse the files and downloads the segments. I am hoping that there is a tool/API available to parse the index files.

Appreciate your help.

Thanks,
Padma.

By: rdkls

rdkls — Wed, 02 Nov 2011 02:19:59 +0000

Please note the svn mentioned above is quite old, and the latest version is here https://github.com/carsonmcdonald/HTTP-Live-Video-Stream-Segmenter-and-Distributor/tree/v2

I've just sent Carson pull request for minor changes fixing compilation against new versions of libav, not sure how active he is with it though.
Until applied, my fixed fork is here:
https://github.com/rdkls/HTTP-Live-Video-Stream-Segmenter-and-Distributor/tree/v2

By: Sandeep Suresh

Sandeep Suresh — Mon, 31 Oct 2011 09:05:00 +0000

Dear Carson,
Is there a package with FFMpeg and stream segmenter which can be compiled, linked and built for an emmedded system (ARM, MIPS, x86 etc). Currently there seems to be a lot of dependency on a number of libraries. I got a link at http://www.users.on.net/~belles/software/ffmpeg/
but this again does not contain the sources, but only libraries for a RISC architecture.
Regards
Sandeep Suresh.

By: joolz

joolz — Wed, 13 Jul 2011 20:43:23 +0000

ok just built the software and modified it to compile and link with the latest git of ffmpeg and x264 libraries

but i get a crash "***stack smashing …"

always when trying to start creating segment 40?

anybody got a version running with a new build of ffmpeg libs

also lots of memory lost

joolz

By: Brian Morton

Brian Morton — Tue, 14 Jun 2011 20:52:55 +0000

Here's my patch to get the original segmenter working against ffmpeg trunk. Note that m3u8-segmenter does not compile against ffmpeg trunk either.

Index: segmenter.c
===================================================================
— segmenter.c (revision 50)
+++ segmenter.c (working copy)
@@ -20,6 +20,20 @@

#include "libavformat/avformat.h"

+/* This code is here to allow old versions of ffmpeg to compile.
+** It should be removed in the near future after everyone updates
+** to the latest ffmpeg version.
+*/
+#define CodecType AVMediaType
+#define CODEC_TYPE_UNKNOWN AVMEDIA_TYPE_UNKNOWN
+#define CODEC_TYPE_VIDEO AVMEDIA_TYPE_VIDEO
+#define CODEC_TYPE_AUDIO AVMEDIA_TYPE_AUDIO
+#define CODEC_TYPE_DATA AVMEDIA_TYPE_DATA
+#define CODEC_TYPE_SUBTITLE AVMEDIA_TYPE_SUBTITLE
+#define CODEC_TYPE_ATTACHMENT AVMEDIA_TYPE_ATTACHMENT
+#define CODEC_TYPE_NB AVMEDIA_TYPE_NB
+#define PKT_FLAG_KEY AV_PKT_FLAG_KEY
+
static AVStream *add_output_stream(AVFormatContext *output_format_context, AVStream *input_stream) {
AVCodecContext *input_codec_context;
AVCodecContext *output_codec_context;
@@ -239,7 +253,7 @@
exit(1);
}

- ofmt = guess_format("mpegts", NULL, NULL);
+ ofmt = av_guess_format("mpegts", NULL, NULL);
if (!ofmt) {
fprintf(stderr, "Could not find MPEG-TS muxer\n");
exit(1);

By: rct

rct — Mon, 13 Jun 2011 02:06:21 +0000

Getting the same error as Cristi with the git ffmpeg… Anyone know a version of the ffmpeg that works with this?

By: Cristi

Cristi — Tue, 31 May 2011 16:11:21 +0000

This is a new one! I am also having trouble compiling the segmentor, but I have not seen the error I'm getting at the other people.

http://pastebin.com/d6hPVhhg

Help is much appreciated.

Thank you!

By: alntke

alntke — Thu, 12 May 2011 13:35:18 +0000

Hi Carson ,
Thanks for such a nice tutorial it helped a lot.

But I am stuck, with playing .m3u8 file in Safari. I have taken the source code which you have given above.
But it is opening the index file in the browser as such instead of playing it. What could be wrong here . Any help will be appreciated.

By: Simon

Simon — Thu, 28 Apr 2011 05:51:51 +0000

I managed to get segmenter to compile on OSX, but all it did was segfault on my ts files (they are aac audio only, no video). Then, I came across m3u8-segmenter. Hooray, works first time. Now if only I'd found it three hours ago...