198 thoughts on “iPhone HTTP Streaming with FFMpeg and an Open Source Segmenter”

1. Thomas Glasgow August 22, 2010 at 3:35 am

   Hi,

   Is there a way to protect the content from being accessed by unauthorized people?

   Thanks for this excellent article
2. Thomas Glasgow August 22, 2010 at 1:58 pm

   I managed to make things work, but not with 100% success.

   In Safari 5 and Firefox 3.6.8, which both support html5 if I use a tag nothing plays. However if I point VLC to the video.m3u8 index file, it does play with a noticeable lag between each segment. Finally, in Quicktime 7.6.6, it tells me that the URL is not valid.

   Any idea how to make things work everywhere?
3. carson Post authorAugust 24, 2010 at 8:56 am

   There is a way to encrypt the stream and you could decrypted it based on someone having authorization however the current implementation I have created doesn't support it.
4. carson Post authorAugust 24, 2010 at 8:58 am

   Not sure what the problem might be with Safari but Firefox won't play this type of video. Firefox doesn't support the codec for one and they don't support Apple's streaming either. If it plays in VLC then it is probably a matter of getting the correct video tag working for Safari to work.
5. Dennis August 24, 2010 at 11:20 am

   Any way to build segmenter with static libs embedded like ffmpeg "./configure … –extra-libs=/tmp/segmenter/lib/libfaac.a –extra-libs=/tmp/segmenter/lib/libx264.a –extra-libs=/tmp/segmenter/lib/libxvidcore.a –extra-libs=/tmp/segmenter/lib/libmp3lame.a
6. aidan August 24, 2010 at 7:35 pm

   Hi,

   thanks for the article. I'd be very interested to hear any thoughts on solving a problem I'm seeing with my segments. (I've built with ffmpeg version 24035)

   When I play back the segments, the video track starts playing ahead of the audio. In other words, the first couple of seconds of the video stream are not playing back, so the video stream is ahead of the audio stream. The audio and video are in sync when I play back the input file. (tested on multiple videos/formats)

   Any thoughts on what could be wrong, or how to resolve?

   Thanks for any suggestions.

7. Pingback: HTTP Streaming with Encryption under Linux | Open Solutions

8. Peter S. September 8, 2010 at 7:15 am

   Hi guys, everything went fine with the segmenter and ffmpeg. But since iOS 4.0 i have the problem that the iphone movieplayer justz shortly opens the stream and closes it immediately. Same Settings and FFmpeg and X264 revisions which worked under 3.x .
   Can anyone confirm this issue?
   Example files can be found here:
   http://ilivemediaserver.com/files/Segments.rar
9. Jkb September 10, 2010 at 3:26 pm

   I'm trying to build the segmenter on Ubuntu 10.04, like crazyfool2100 apparently did successfully, and just cannot do it to save my life. I've followed all instructions, and still get a string of "undefined reference" errors, starting with:

   gcc -Wall -I/home/jkb/ffmpeg -g segmenter.c -o segmenter -L/home/jkb/ffmpeg/libavformat -lavformat -L/home/jkb/ffmpeg/libavcodec -lavcodec -L/home/jkb/ffmpeg/libavutil -lavutil -I/home/jkb/ffmpeg -lbz2 -lm -lz -lfaac -lmp3lame -lx264 -lfaad -lpthread

   /home/jkb/ffmpeg/libavcodec/libavcodec.a(bink.o): In function `decode_init':
   /home/jkb/ffmpeg/libavcodec/bink.c:975: undefined reference to `av_image_check_size'

   I was able to build ffmpeg fine, and run it to create an .mp4 file. But I get no further because I can't segment it.

   Does somebody just have a binary of it???
10. Chris Aenderl September 13, 2010 at 6:22 am

    Hey,

    I got this little issue about duration and can't find a solution. Everything works fine, video result looks create on iphone and ipad but the time is always wrong so video stops and audio goes on for some seconds. In my logs I found:

    E, [2010-09-09T14:23:32.894933 #28401] ERROR — : Encoder c440k: [mpegts @ 0x8053150] max_analyze_duration reached
    [mpegts @ 0x8053150] Estimating duration from bitrate, this may be inaccurate
    Output #0, mpegts, to 'MOV_9581431085c867db3e78223a407bb77b334417dc_c440k':
    Stream #0.0: Video: libx264, yuv420p, 400×224, q=2-31, 90k tbn, 30 tbc
    Stream #0.1: Audio: libfaac, 44100 Hz, stereo, 63 kb/s
    [mpegts @ 0x8060450] muxrate VBR, pcr every 6 pkts, sdt every 200, pat/pmt every 40 pkts
    [mpegts @ 0x8060450] st:1 error, non monotone timestamps 126000 >= 126000
    Segmenter error: Could not write frame of stream: -1
    frame= 210 fps= 37 q=29.0 size= 359kB time=5.63 bitrate= 522.2kbits/s

    Tried with all kind of video input and the recommended ipad-config.yml

    Thanks for any ideas.
11. slevytam September 22, 2010 at 12:39 am

    This is what seems to work for me to compile the segmenter. Remember to change the path for each library.

    gcc -Wall -g segmenter.c -o segmenter -L/usr/include/ffmpeg/libavformat -lavformat -L/usr/include/ffmpeg/libavcodec -lavcodec -L/usr/include/ffmpeg/libavutil -lavutil -I/usr/include/ffmpeg/ -lm -lmp3lame -lxvidcore -lx264 -lfaad -lfaac -lpthread -lz
12. Dennis September 27, 2010 at 2:12 pm

    Greetings!
    Can segmenter be statically linked to .a libraries instead of .so?
    Has anyone tried and succeeded?
13. Hervé October 20, 2010 at 6:26 am

    Hi, I encounter same problem compiling segmenter that JkB

    /usr/local/lib/libavcodec.a(bink.o): In function `decode_init':
    /root/ffmpeg/libavcodec/bink.c:975: undefined reference to `av_image_check_size'
    /usr/local/lib/libavcodec.a(dnxhddec.o): In function `dnxhd_decode_frame':
    /root/ffmpeg/libavcodec/dnxhddec.c:309: undefined reference to `av_image_check_size'
    …
    I've undertstood that problem is coming from ffmpeg revision …
    I've tried to set Paths in Makefile … but problem is still there.

    Does somebody find a solution or have a clue to fix this ?

    Thanks for any good idea
14. Mayank Jain November 8, 2010 at 12:18 pm

    Hi, I am also having problem in compiling segmenter.
    I tried following comment:

    gcc -Wall -g live_segmenter.c -o live_segmenter -L/root/ffmpeg/libavformat -lavformat -L/root/ffmpeg/libavcodec -lavcodec -L/root/ffmpeg/libavutil -lavutil -I/root/ffmpeg/ -lm -lmp3lame -lxvidcore -lx264 -lfaad -lfaac -lpthread -lz

    And I got following errors.

    /root/ffmpeg/libavcodec/libavcodec.a(bink.o): In function `decode_init':
    /root/ffmpeg/libavcodec/bink.c:975: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(dnxhddec.o): In function `dnxhd_decode_frame':
    /root/ffmpeg/libavcodec/dnxhddec.c:309: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(dpx.o): In function `decode_frame':
    /root/ffmpeg/libavcodec/dpx.c:143: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(dsputil.o): In function `dsputil_init':
    /root/ffmpeg/libavcodec/dsputil.c:4458: undefined reference to `av_image_copy_plane'
    /root/ffmpeg/libavcodec/libavcodec.a(eacmv.o): In function `cmv_decode_frame':
    /root/ffmpeg/libavcodec/eacmv.c:160: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(eamad.o): In function `decode_frame':
    /root/ffmpeg/libavcodec/eamad.c:264: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(eatgv.o): In function `tgv_decode_frame':
    /root/ffmpeg/libavcodec/eatgv.c:279: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(gifdec.o): In function `gif_decode_frame':
    /root/ffmpeg/libavcodec/gifdec.c:300: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(h264.o): In function `decode_slice_header':
    /root/ffmpeg/libavcodec/h264.c:1918: undefined reference to `av_image_copy'
    /root/ffmpeg/libavcodec/libavcodec.a(iff.o): In function `decode_init':
    /root/ffmpeg/libavcodec/iff.c:164: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(indeo3.o): In function `iv_decode_frame':
    /root/ffmpeg/libavcodec/indeo3.c:999: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(kgv1dec.o): In function `decode_frame':
    /root/ffmpeg/libavcodec/kgv1dec.c:54: undefined reference to `av_image_check_size'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_wb_decode_frame':
    /root/ffmpeg/libavcodec/libopencore-amr.c:300: undefined reference to `D_IF_decode'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_wb_decode_close':
    /root/ffmpeg/libavcodec/libopencore-amr.c:309: undefined reference to `D_IF_exit'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_nb_encode_frame':
    /root/ffmpeg/libavcodec/libopencore-amr.c:208: undefined reference to `Encoder_Interface_Encode'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_nb_decode_frame':
    /root/ffmpeg/libavcodec/libopencore-amr.c:136: undefined reference to `Decoder_Interface_Decode'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_wb_decode_init':
    /root/ffmpeg/libavcodec/libopencore-amr.c:263: undefined reference to `D_IF_init'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_nb_encode_close':
    /root/ffmpeg/libavcodec/libopencore-amr.c:191: undefined reference to `Encoder_Interface_exit'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_nb_encode_init':
    /root/ffmpeg/libavcodec/libopencore-amr.c:173: undefined reference to `Encoder_Interface_init'
    /root/ffmpeg/libavcodec/libavcodec.a(libopencore-amr.o): In function `amr_nb_decode_close':
    /root/ffmpeg/libavcodec/libopencore-amr.c:105: undefined reference to `Decoder_Interface_exit'
    …….
    …….. and many more…….
    ……..
    ………
    /root/ffmpeg/libavcodec/libavcodec.a(imgconvert.o): In function `ff_fill_linesize':
    /root/ffmpeg/libavcodec/imgconvert.c:504: undefined reference to `av_image_fill_linesizes'
    /root/ffmpeg/libavcodec/libavcodec.a(imgconvert.o): In function `avpicture_fill':
    /root/ffmpeg/libavcodec/imgconvert.c:524: undefined reference to `av_image_fill_pointers'

    collect2: ld returned 1 exit status
    make: *** [all] Error 1

    Can anyone please suggest any solution to get rid of all the errors above and can successfully install segmenter.

    Any help is really appreciable…..

    Thanks in advance…
15. Mayank November 10, 2010 at 5:20 pm

    I am also getting similar error as Hervé and JkB.
    Trying to build segmenter on Ubuntu 10.04, 32 bit machine.

    I've installed ffmpeg as been described in ubuntu documentation, but still getting errors .

    Does anyone have any solution or fix for this?

    Thanks in advance.
16. Reini Grauer November 12, 2010 at 6:06 pm

    I'm working on building a video uploading app for work and I can't seem to get this segmentation to work perfectly. I'm encoding the videos using ffmpeg and these settings:

    c:\ffmpeg\bin\ffmpeg.exe -i c:\ffmpeg\bin\Input\test.avi -vcodec libx264 -f mpegts -vpre slower -vpre baseline -b 160k -r 10 -g 25 -pass 1/2 -threads 8 -y -strict experimental -acodec aac -ar 48000 -ab 64k 160k_stream.ts

    c:\ffmpeg\bin\ffmpeg.exe -i c:\ffmpeg\bin\Input\test.avi -vcodec libx264 -f mpegts -vpre slower -vpre baseline -b 300k -r 10 -g 25 -pass 1/2 -threads 8 -y -strict experimental -acodec aac -ar 48000 -ab 64k sample_300_pre.ts

    And to get an audio only track:

    c:\ffmpeg\bin\ffmpeg.exe -i c:\ffmpeg\bin\output\300k_stream.ts -acodec copy -vn -y output/audio_stream.ts

    Everything in that department works great. The videos play just fine. The problem comes when I run the segmenter:

    c:\ffmpeg\bin\segmenter.exe c:\ffmpeg\bin\output\audio_stream.ts 10 stream c:/ffmpeg/bin/segmented/stream_audio.m3u8 audio\
    c:\ffmpeg\bin\segmenter.exe c:\ffmpeg\bin\output\160k_stream.ts 10 stream c:/ffmpeg/bin/segmented/stream_low.m3u8 low\
    c:\ffmpeg\bin\segmenter.exe c:\ffmpeg\bin\output\300k_stream.ts 10 stream c:/ffmpeg/bin/segmented/stream_medium.m3u8 medium\

    It seems the segmenter never seems to cut the files into the same number of pieces. Moreover, the pieces are of different lengths, not 10 seconds each like I originally thought they would be. (piece 1 on low may be 9 seconds where it is 11 seconds on medium and 10 seconds on audio only).

    Needless to say, I'm stumped. Is there any way to force some kind of synchronization here? This is so I can do real live streaming with intelligent bitrate switching.
17. carson Post authorNovember 16, 2010 at 9:46 am

    @Reini You won't always get an exact 10 second segment and that is acceptable. It should be close to 10 seconds each time but it can be over or under. Each segment has to stop and start on a special frame so it may be that for the different qualities ffmpeg is adding those frames in different places.
18. Justin Greer November 19, 2010 at 3:49 pm

    For those having trouble with the video playing twice as fast as it should and the audio being off, these are the changes I had to make to get it working. There are also a couple small updates so it shouldn't complain about newer ffmpeg versions, and ignoring the warning about DTS/PTS values (as suggested by John).

    This version ignores any initial audio or video delay values (I'm assuming both streams *should* start at zero, which is the case with our videos). Using this method seems to solve at least our issues with "non monotone timestamps" as well as fixes the sync problems we've seen.

    The main trick about the frame rate is that newer ffmpeg versions set a ticks_per_frame multiplier (of 2) on the time base, but this isn't accounted for in the segmenter. So I added something to take that into account.

    I'm not sure these changes will work for everyone, but they fix the issues we've run into. I'd be interested to hear any comments on the correctness of these changes.

    Oh, and one more note for those having trouble compiling, getting errors starting with "/root/ffmpeg/libavcodec/libavcodec.a(bink.o): In function `decode_init':" — you probably have ffmpeg (and libavcodec) compiled statically. Try compiling ffmpeg with –enable-shared and maybe –disable-static to see if it helps?

    
Index: segmenter.c
===================================================================
--- segmenter.c (revision 50)
+++ segmenter.c (working copy)
@@ -239,7 +239,7 @@
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);
    @@ -251,6 +251,9 @@
    exit(1);
    }
    oc->oformat = ofmt;
    +
    + // Don't print warnings when PTS and DTS are identical.
    + ic->flags |= AVFMT_FLAG_IGNDTS;

    video_index = -1;
    audio_index = -1;
    @@ -289,6 +292,12 @@
    fprintf(stderr, "Could not open video decoder, key frames will not be honored\n");
    }

    + if (video_st->codec->ticks_per_frame > 1) {
    + // h264 sets the ticks_per_frame and time_base.den but not time_base.num
    + // since we don't use ticks_per_frame, adjust time_base.num accordingly.
    + video_st->codec->time_base.num *= video_st->codec->ticks_per_frame;
    + }
    +
    snprintf(output_filename, strlen(output_prefix) + 15, "%s-%u.ts", output_prefix, output_index++);
    if (url_fopen(&oc->pb, output_filename, URL_WRONLY) pts.val * video_st->time_base.num / video_st->time_base.den;
    - }
    - else if (video_index pts.val * audio_st->time_base.num / audio_st->time_base.den;
    - }
    - else {
    + if (packet.stream_index == video_index) {
    + if (initial_video_pts time_base.num / video_st->time_base.den;
    + } else {
    + segment_time = prev_segment_time;
    + }
    + } else if (packet.stream_index == audio_index) {
    + if (initial_audio_pts = segment_duration) {
    @@ -357,7 +378,7 @@
    prev_segment_time = segment_time;
    }

    - ret = av_interleaved_write_frame(oc, &packet);
+ ret = av_write_frame(oc, &packet);
if (ret < 0) {
fprintf(stderr, "Warning: Could not write frame of stream\n");
}

19. Rick December 20, 2010 at 4:35 pm

    Hey Carson,

    Excellent post! I learned a lot for sure. One question: I noticed on another site that there is a way to push a stream via UDP. http://ubuntuforums.org/showthread.php?p=7257944 I was wondering how something like this would fit in your scenario. Could I be sending a file through FFMPEG, creating a live stream in real time?
20. Justin Greer January 12, 2011 at 10:23 am

    A couple people have emailed, mentioning that the blog reformatted my patch so that it's difficult to use. Here's a gist containing the same patch: https://gist.github.com/776283
21. Michal Frackowiak January 13, 2011 at 5:13 am

    @Justin: Thanks, the patch is awesome, it fixes all my av sync issues. Great work!
22. Alex January 20, 2011 at 10:32 am

    For those having problems like Herve, Mayank Jain and Jkb, you need to add in the -lavcore library into the makefile, so it now reads like:

    all:
    gcc -Wall -g live_segmenter.c -o live_segmenter -lavformat -lavcodec -lavutil -lavcore -lbz2 -lm -lz -lfaac -lmp3lame -lx264 -lfaad -lpthread

    clean:
    rm -f live_segmenter
23. carson Post authorJanuary 31, 2011 at 9:12 am

    @Rick It seems possible. I'll have to look at it more when I get time to work on the project again.
24. Derek February 2, 2011 at 12:28 am

    Hi Carson,

    First of all thanks for all the work you've done here. Unfortunately I am having some issues getting it to work myself, I think most of the problems are due to new versions of VLC, Quicktime Broadcaster, and FFMpeg that I am using. I pulled the latest version of FFMpeg from git, and the configure line you have gives me :

    Unknown option "--enable-libfaad".

    When I remove the –enable-libfaad flag it gives me:

    yasm not found, use --disable-yasm for a crippled build

    Upon taking a look in the ffmpeg directory, the latest version doesn't appear to have any faad / faac with it. I've been trying for weeks now to get something to work. Am I missing something? I don't understand why the latest version of ffmpeg would make the difference here.
25. Derek February 2, 2011 at 2:00 am

    I think I may have solved part of my problem.. looks like i just need to install faad, faac, and lame properly (i'm a linux noob so this has been hindering my progress since i have to search for everything) then re-configure ffmpeg. After I posted I went back a few comment pages and one of the responses does mention this. I'll keep working away. Thanks!
26. Ankit February 11, 2011 at 1:22 am

    segmenter.c: In function `main':
    segmenter.c:242: warning: `guess_format' is deprecated (declared at libavformat/ avformat.h:789)
    /tmp/ccxSkN1c.o(.text+0xf): In function `add_output_stream':
    /home/ankit/segmenter.c:28: undefined reference to `av_new_stream'
    /tmp/ccxSkN1c.o(.text+0x563): In function `main':
    /home/ankit/segmenter.c:177: undefined reference to `av_register_all'
    /tmp/ccxSkN1c.o(.text+0x816):/home/ankit/segmenter.c:225: undefined reference to `av_find_input_format'
    /tmp/ccxSkN1c.o(.text+0x858):/home/ankit/segmenter.c:231: undefined reference to `av_open_input_file'
    /tmp/ccxSkN1c.o(.text+0x892):/home/ankit/segmenter.c:237: undefined reference to `av_find_stream_info'
    /tmp/ccxSkN1c.o(.text+0x8ca):/home/ankit/segmenter.c:242: undefined reference to `guess_format'
    /tmp/ccxSkN1c.o(.text+0x8fb):/home/ankit/segmenter.c:248: undefined reference to `avformat_alloc_context'
    /tmp/ccxSkN1c.o(.text+0xa40):/home/ankit/segmenter.c:276: undefined reference to `av_set_parameters'
    /tmp/ccxSkN1c.o(.text+0xa76):/home/ankit/segmenter.c:281: undefined reference to `dump_format'
    /tmp/ccxSkN1c.o(.text+0xa8d):/home/ankit/segmenter.c:283: undefined reference to `avcodec_find_decoder'
    /tmp/ccxSkN1c.o(.text+0xac0):/home/ankit/segmenter.c:288: undefined reference to `avcodec_open'
    /tmp/ccxSkN1c.o(.text+0xb22):/home/ankit/segmenter.c:293: undefined reference to `url_fopen'
    /tmp/ccxSkN1c.o(.text+0xb57):/home/ankit/segmenter.c:298: undefined reference to `av_write_header'
    /tmp/ccxSkN1c.o(.text+0xbf5):/home/ankit/segmenter.c:309: undefined reference to `av_read_frame'
    /tmp/ccxSkN1c.o(.text+0xc15):/home/ankit/segmenter.c:314: undefined reference to `av_dup_packet'
    /tmp/ccxSkN1c.o(.text+0xc41):/home/ankit/segmenter.c:316: undefined reference to `av_free_packet'
    /tmp/ccxSkN1c.o(.text+0xcdf):/home/ankit/segmenter.c:331: undefined reference to `put_flush_packet'
    /tmp/ccxSkN1c.o(.text+0xcf0):/home/ankit/segmenter.c:332: undefined reference to `url_fclose'
    /tmp/ccxSkN1c.o(.text+0xe1f):/home/ankit/segmenter.c:352: undefined reference to `url_fopen'
    /tmp/ccxSkN1c.o(.text+0xe68):/home/ankit/segmenter.c:360: undefined reference to `av_interleaved_write_frame'
    /tmp/ccxSkN1c.o(.text+0xeb7):/home/ankit/segmenter.c:366: undefined reference to `av_free_packet'
    /tmp/ccxSkN1c.o(.text+0xecb):/home/ankit/segmenter.c:370: undefined reference to `av_free_packet'
    /tmp/ccxSkN1c.o(.text+0xee3):/home/ankit/segmenter.c:373: undefined reference to `av_write_trailer'
    /tmp/ccxSkN1c.o(.text+0xef4):/home/ankit/segmenter.c:375: undefined reference to `avcodec_close'
    /tmp/ccxSkN1c.o(.text+0xf2a):/home/ankit/segmenter.c:378: undefined reference to `av_freep'
    /tmp/ccxSkN1c.o(.text+0xf45):/home/ankit/segmenter.c:379: undefined reference to `av_freep'
    /tmp/ccxSkN1c.o(.text+0xf60):/home/ankit/segmenter.c:382: undefined reference to `url_fclose'
    /tmp/ccxSkN1c.o(.text+0xf6e):/home/ankit/segmenter.c:383: undefined reference to `av_free'
    collect2: ld returned 1 exit status
    make: *** [all] Error 1

    I am getting the above error when I am trying to build the segmenter.
    Any help will be appreciated
27. Ace February 22, 2011 at 1:34 pm

    I'm live streaming from dreambox to ffmpeg. However the connection keeps resetting with "connection reset by peer". So I used wget in front of ffmpeg to use the capability of wget to retry connecting. It works ok but sometimes the pipe breaks and the segmenter does not function properly.

    As a whole this system is unstable in terms of live streaming. Will check out vlc with httplive module.

    PS. Unfortunately multiple streaming is not possible due to the fact that dreambox only accepts a single stream from its webserver.
28. Kevin van Zonneveld March 2, 2011 at 9:45 am

    Hey,

    I'm trying to compile against the current ffmpeg HEAD & x264 HEAD, but I get this error:
    http://ffmpeg.pastebin.com/wrs0pg1Y

    Any clue how to proceed?
29. Liano March 13, 2011 at 3:48 pm

    Hi all,
    is a segmented stream seekable?
    From what i've read here, the seeking doesn't work with HTTP Cupertino streaming, is it so?
30. thomas March 18, 2011 at 2:31 pm

    With the various patches and tips here, everything is working great (thank you!), but I have noticed something odd that hopefully someone can shed some light on. When I try encoding at different bitrates (for the "adaptive" part of this) and segment the .ts files, the number of segments at each bitrate level don't match one-for-one. They should, right? I mean…they need to be the exactly the same, if I understand this correctly.

    This becomes pretty obvious with longer clips. I might have 250 segments at bitrate and 270 segments at another.

    Would the problem here be in the segmentation or the encoding?
31. Ganesh Krishnan April 1, 2011 at 1:45 am

    If you get the message
    
yasm not found, use –disable-yasm for a crippled build


    then install yasm by
    
sudo atp-get install yasm


    Also the formatting on this blog is messed up so view the source of this page to get the full command of configurations.

    You can safely remove -lfaad from segmenter and ffmpeg building if you hit upon any issues with it.

    Cheers
    ~gk
32. carson Post authorApril 5, 2011 at 5:33 pm

    @Kevin I think the source needs an update for newer versions of ffmpeg. I have one in the works but not sure how long it will take to make sure it is working.
33. carson Post authorApril 5, 2011 at 8:28 pm

    @Liano A live stream won't be seekable beyond the 3 preceding segments but a non-live stream can seek anywhere.
34. Ankit April 7, 2011 at 12:33 am

    /usr/bin/ld: cannot find -llibavformat
    collect2: ld returned 1 exit status
    make: *** [all] Error 1

    I have successfully compiled ffmpeg on Ubuntu. But when I am trying to compile the segmenter it is giving the above error. Googled on it but no specific solution. Can anyone please help on this.
    Do I need to use any specific version of ffmpeg?
35. Thomas April 13, 2011 at 5:59 am

    Does anyone have problem with the time offset ? what patch should I apply to avoid the time offset like the video end early but the audio still playing…etc?
36. Simon April 28, 2011 at 12:51 am

    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…
37. alntke May 12, 2011 at 8:35 am

    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.
38. Cristi May 31, 2011 at 11:11 am

    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!
39. rct June 12, 2011 at 9:06 pm

    Getting the same error as Cristi with the git ffmpeg… Anyone know a version of the ffmpeg that works with this?
40. Brian Morton June 14, 2011 at 3:52 pm

    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);

41. joolz July 13, 2011 at 3:43 pm

    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
42. Sandeep Suresh October 31, 2011 at 4:05 am

    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.
43. rdkls November 1, 2011 at 9:19 pm

    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
44. Padma January 3, 2012 at 6:21 pm

    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.
45. startx January 4, 2012 at 11:07 am

    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?
46. Raj January 28, 2012 at 8:59 am

    $ configure –enable-gpl –enable-nonfree –enable-pthreads –enable-libx264
    sh.exe": configure: command not found

    This is the error i am getting.
    Please help!
    thank you
47. Brian Morton February 10, 2012 at 11:33 am

    Padma,

    Such tools exist in ffmpeg trunk.

    http://www.ffmpeg.org/doxygen/trunk/applehttpproto_8c.html

    I hope they will include a muxer/segmenter in the future to complement the demuxer.
48. Bob April 16, 2012 at 9:21 am

    alntke,

    Make sure you have the addtypes for the m3u8 files added to either the web server configuration or, the easier approach, to the .htaccess file for your web root. I saw similar behavior prior to doing this. Basically, I could get the video to play, but if I clicked on the video in desktop Safari, it would change to a file showing me the contents of the index (rather than the video). Adding the .ts and then m3u8 filetypes to my .htaccess file resolved the issue.