First program using the Shaka packager library

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Virginia M

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Sep 27, 2017, 11:36:05 AM9/27/17
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Hello,

I have recently started to work with this library. First, I used the packager binary to segment a content, generate the different types of playlists, extract the video or the audio... And now, I'm trying to do the same linking this library in my program. Following the documentation, I have written the next simple program with the aim of segmenting the input .ts content into multiples segments and generating the HLS playlist:

#include <cstdlib>
#include <vector>

#include "packager/packager.h"
#include "packager/status.h"

int main () {

    shaka::Packager packager;

    // Setup packaging parameters.
    shaka::PackagingParams packaging_params;
    packaging_params.temp_dir = "~/shaka-results/temp";
    // --- Chunking params
    packaging_params.chunking_params.segment_duration_in_seconds = 6;
    packaging_params.chunking_params.subsegment_duration_in_seconds = 6;
    packaging_params.chunking_params.segment_sap_aligned = true;
    packaging_params.chunking_params.subsegment_sap_aligned = false;
    // --- HLS params
    packaging_params.hls_params.base_url = "video_$Number$.ts";
    packaging_params.hls_params.master_playlist_output = "~/shaka-results/master_playlist.m3u8";
    packaging_params.hls_params.playlist_type = shaka::HlsPlaylistType::kVod;
    packaging_params.hls_params.time_shift_buffer_depth = 0;



    // Setup stream descriptors.
    std::vector<shaka::StreamDescriptor> stream_descriptors;
    shaka::StreamDescriptor stream_descriptor;
    // --- video
    stream_descriptor.input = "~/Contents/original_content/AMCHD-04-TS.ts";
    stream_descriptor.stream_selector = "video";
    stream_descriptor.output = "~/shaka-results/video_$Number$.ts";
    stream_descriptor.segment_template = "video_$Number$.ts";
    stream_descriptor.skip_encryption = true;
    stream_descriptor.trick_play_factor = 0;
    stream_descriptor.hls_playlist_name = "playlist.m3u8";
    stream_descriptors.push_back(stream_descriptor);

    shaka::Status status = packager.Initialize(packaging_params, stream_descriptors);

    if (!status.ok()){
        std::cout << "Status is NOK" << std::endl;
        return EXIT_FAILURE;
    }

    status = packager.Run();

    return EXIT_SUCCESS;
}

The compilation and linking of the library is successful, but the status variable takes a no-OK value. I don't know what the correct value is to initialize these parameters and above all, I don't know how to configute the logging level to see the debug messages included in the code.

I appreciate any help.
Thanks.

KongQun Yang

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Sep 27, 2017, 3:17:26 PM9/27/17
to Virginia M, Shaka Packager Users
Hi Virginia,

You can print out the status to see what is wrong, i.e.

std::cout << "Status is NOK" << status << std::endl;

The problem is that TS is self-initialization, so stream_descriptor.output shouldn't be set. There is actually another problem, packager does not understand "~" in the path, you'll need to use the absolute path instead.



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MV

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Sep 28, 2017, 8:43:42 AM9/28/17
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Thanks for your answer, it was very useful for me.

I take advantage to ask another question, I'm having problems with the generated HLS content. The content is gnerated successfully, but it can be played using several players.
Maybe I'm not providing the correct information and the output content might have generated with errors.

The first case is using a MP4 input content:

    // --- Setup packaging parameters.
    // ------ Chunking params

    packaging_params.chunking_params.segment_duration_in_seconds = 6;
    packaging_params.chunking_params.subsegment_duration_in_seconds = 6;
    packaging_params.chunking_params.segment_sap_aligned = true;

    packaging_params.chunking_params.subsegment_sap_aligned = true;
    // ------ MPD params

    packaging_params.hls_params.playlist_type = shaka::HlsPlaylistType::kVod;

    packaging_params.hls_params.master_playlist_output = destDir_test8 + "master_playlist.m3u8";
    std::string test8_br1 = destDir_test8 + "bitrate_1/";
    mkdir(test8_br1.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
    //packaging_params.hls_params.base_url = test7_br1 + "seg_";

    // --- Setup stream descriptors.
    stream_descriptor.input = inputDir + "BigBuckBunny_512kb.mp4";
    stream_descriptor.stream_selector = "video";
    stream_descriptor.output = test8_br1 + "video_init.mp4";
    stream_descriptor.segment_template = test8_br1 + "seg_$Number$.m4s";
    stream_descriptor.hls_playlist_name = "video_playlist.m3u8";
    stream_descriptors.push_back(stream_descriptor);

    stream_descriptor.input = inputDir + "BigBuckBunny_512kb.mp4";
    stream_descriptor.stream_selector = "audio";
    stream_descriptor.output = test8_br1 + "audio_init.mp4";
    stream_descriptor.segment_template = test8_br1 + "seg_$Number$.m4s";
    stream_descriptor.hls_playlist_name = "audio_playlist.m3u8";
    stream_descriptors.push_back(stream_descriptor);


The output traces are:
[vmarting@localhost ingress]$ ./Ingress                                                                                                                                                                          
[0928/141759:INFO:demuxer.cc(88)] Demuxer::Run() on file '[...]/Contents/original_content/BigBuckBunny_512kb.mp4'.                                                                          
[0928/141759:INFO:demuxer.cc(160)] Initialize Demuxer for file '[...]/Contents/original_content/BigBuckBunny_512kb.mp4'.                                                                    
[0928/141800:INFO:mp4_muxer.cc(215)] MP4 file '[...]test8_hls_mp4_to_multiple_m4s_segments/bitrate_1/video_init.mp4' finalized.                                                  
[0928/141800:INFO:mp4_muxer.cc(215)] MP4 file ''[...]test8_hls_mp4_to_multiple_m4s_segments/bitrate_1/audio_init.mp4' finalized.



The second case is using a TS input content:


   std::string destDir_test7 = destDir + "test7_hls_ts_to_multiple_ts_segments/";
    mkdir(destDir_test7.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

    // --- Setup packaging parameters.
    // ------ Chunking params

    packaging_params.chunking_params.segment_duration_in_seconds = 6;
    packaging_params.chunking_params.subsegment_duration_in_seconds = 6;
    packaging_params.chunking_params.segment_sap_aligned = true;

    packaging_params.chunking_params.subsegment_sap_aligned = true;
    // ------ MPD params

    packaging_params.hls_params.playlist_type = shaka::HlsPlaylistType::kVod;

    packaging_params.hls_params.master_playlist_output = destDir_test7 + "master_playlist.m3u8";
    std::string test7_br1 = destDir_test7 + "bitrate_1/";
    mkdir(test7_br1.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

    // --- Setup stream descriptors.
    stream_descriptor.input = inputDir + "AMCHD-04-TS.ts";
    stream_descriptor.stream_selector = "video";
    stream_descriptor.segment_template = test7_br1 + "seg_$Number$.ts";
    stream_descriptor.hls_playlist_name = "playlist.m3u8";
    stream_descriptors.push_back(stream_descriptor);


The playlists seem correct.



And the last question: With the previous TS content, I am getting the following output message:


[0928/143659:WARNING:h26x_byte_to_unit_stream_converter.cc(91)] Seeing varying NAL unit of type 8. You may need to set --strip_parameter_set_nalus=false during packaging to generate a playable stream.

But after analyzing all input parameters, I haven't found the way to indicate this argument in a program using the library (I know how to manage it using the executable directly)

Thanks.


On Wednesday, September 27, 2017 at 9:17:26 PM UTC+2, KongQun Yang wrote:
Hi,

-- KongQun Yang (KQ)

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KongQun Yang

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Sep 28, 2017, 1:33:40 PM9/28/17
to MV, Shaka Packager Users
See the replies below. A not directly related question, are you linking the library statically or dynamically?

-- KongQun Yang (KQ)

On Thu, Sep 28, 2017 at 5:43 AM, MV <v.martin....@gmail.com> wrote:

Thanks for your answer, it was very useful for me.

I take advantage to ask another question, I'm having problems with the generated HLS content. The content is gnerated successfully, but it can be played using several players.

Do you mean cannot?
The segment_template for audio and video are set to the same value. That is probably what is causing your problem.
Sorry about that. It is not exposed in the packaging API interface right now. For now, you'll have to modify the packager code directly to do that (maybe set the default value to false just for your test).
 

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MV

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Sep 29, 2017, 9:45:40 AM9/29/17
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I'm linking the library dynamically.
Yes, the same segment_template for video and audio was causing some problems ... I didn't realize about it. However, the generated HLS content is not playable in some players such as, Osmo GPAC, VLC ....
Then, I have tried to play it on the Safari browser of an iOS device and the playback is correct.

Thanks for your help.

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

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KongQun Yang

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Sep 29, 2017, 12:28:28 PM9/29/17
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-- KongQun Yang (KQ)

On Fri, Sep 29, 2017 at 6:45 AM, MV <v.martin....@gmail.com> wrote:

I'm linking the library dynamically.
Yes, the same segment_template for video and audio was causing some problems ... I didn't realize about it. However, the generated HLS content is not playable in some players such as, Osmo GPAC, VLC ....

I am not very familiar with HLS support in Osmo GPAC and VLC. I am not sure if VLC supports fMP4 in HLS, but TS should be supported in VLC. You may file an issue to Osmo GPAC and VLC. Feel free to loop me in if you do.
 
Then, I have tried to play it on the Safari browser of an iOS device and the playback is correct.

Great! 

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

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MV

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Oct 16, 2017, 7:16:50 AM10/16/17
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Hi again,

I'm having a small problem with the initialization segment location in HLS playlists.
For example, the input parameters indicated in my program are:

    [...]

    else if(format == "hls"){
        destination = dest_dir + "mp4-hls/";
        // ------ HLS params
        packaging_params.hls_params.playlist_type = shaka::HlsPlaylistType::kLive;
        packaging_params.hls_params.master_playlist_output = destination + "master_playlist.m3u8";
    }

    mkdir(destination.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

    // --- Stream descriptors.

    std::vector<shaka::StreamDescriptor> stream_descriptors;
    shaka::StreamDescriptor stream_descriptor;


    stream_descriptor.input = input_content;
    stream_descriptor.stream_selector = "video";
    std::string dest_video = destination + "video/";
    mkdir(dest_video.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
    stream_descriptor.segment_template = dest_video +  "seg_video_$Number$.m4s";
    stream_descriptor.output = dest_video + "video_init.mp4";

    if(format == "hls")
        stream_descriptor.hls_playlist_name = "video_playlist.m3u8";

    stream_descriptors.push_back(stream_descriptor);



The output content is stored as follows:

[...@localhost mp4-hls]$ ls -la & ls -la video/
[1] 24182
total 12
drwxrwxr-x 3 ... ...   71 Oct 16 12:53 .
drwxrwxr-x 3 ... ...   20 Oct 16 12:51 ..
-rw-rw-r-- 1 ... ...  188 Oct 16 12:53 master_playlist.m3u8
drwxrwxr-x 2 ... ... 4096 Oct 16 12:53 video
-rw-rw-r-- 1 ... ...  904 Oct 16 12:53 video_playlist.m3u8
total 21432
drwxrwxr-x 2 ... ...      4096 Oct 16 12:53 .
drwxrwxr-x 3 ... ...        71 Oct 16 12:53 ..
-rw-rw-r-- 1 ... ...   1136395 Oct 16 12:52 seg_video_10.m4s
-rw-rw-r-- 1 ... ...   1123253 Oct 16 12:52 seg_video_11.m4s
-rw-rw-r-- 1 ... ...   1028984 Oct 16 12:53 seg_video_12.m4s
-rw-rw-r-- 1 ... ...   1163507 Oct 16 12:53 seg_video_13.m4s
-rw-rw-r-- 1 ... ...   1206544 Oct 16 12:53 seg_video_14.m4s
-rw-rw-r-- 1 ... ...   1365737 Oct 16 12:53 seg_video_15.m4s
-rw-rw-r-- 1 ... ...   1222401 Oct 16 12:53 seg_video_16.m4s
-rw-rw-r-- 1 ... ..    1217984 Oct 16 12:53 seg_video_17.m4s
-rw-rw-r-- 1 ... ...   1154715 Oct 16 12:53 seg_video_18.m4s
-rw-rw-r-- 1 ... ...   1253755 Oct 16 12:53 seg_video_19.m4s
-rw-rw-r-- 1 ... ...    756946 Oct 16 12:51 seg_video_1.m4s
-rw-rw-r-- 1 ... ...   1163004 Oct 16 12:52 seg_video_2.m4s
-rw-rw-r-- 1 ... ...   1138016 Oct 16 12:52 seg_video_3.m4s
-rw-rw-r-- 1 ... ...    990437 Oct 16 12:52 seg_video_4.m4s
-rw-rw-r-- 1 ... ...   1155734 Oct 16 12:52 seg_video_5.m4s
-rw-rw-r-- 1 ... ...   1249844 Oct 16 12:52 seg_video_6.m4s
-rw-rw-r-- 1 ... ...   1270836 Oct 16 12:52 seg_video_7.m4s
-rw-rw-r-- 1 ... ...   1074323 Oct 16 12:52 seg_video_8.m4s
-rw-rw-r-- 1 ... ...   1221184 Oct 16 12:52 seg_video_9.m4s
-rw-rw-r-- 1 ... ...       802 Oct 16 12:51 video_init.mp4



The problem is the location of the initialization segment indicated in the playlist. It is an absolute path ( live_content/mp4-hls/video/video_init.mp4)instead of the relative path (video/video_init.mp4) like for the rest of segments.

[...@localhost mp4-hls]$ cat video_playlist.m3u8
#EXTM3U
#EXT-X-VERSION:6
## Generated with https://github.com/google/shaka-packager version 31bf6da-release
#EXT-X-TARGETDURATION:6
#EXT-X-MAP:URI="live_content/mp4-hls/video/video_init.mp4"
#EXTINF:2.000,
video/seg_video_1.m4s
#EXTINF:6.000,
video/seg_video_2.m4s
#EXTINF:6.000,
video/seg_video_3.m4s
#EXTINF:6.000,
video/seg_video_4.m4s
...



I have tried several ways to provide the parameters, but I haven't found the solution yet.
Thanks.


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


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KongQun Yang

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Oct 16, 2017, 2:14:38 PM10/16/17
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Sorry about that. It is a bug which was fixed last week: https://github.com/google/shaka-packager/commit/c87c4c2327374d875d33021e82ef1805b396c41a.

Can you try the latest commit?

-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


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KongQun Yang

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Oct 16, 2017, 6:37:17 PM10/16/17
to MV, Shaka Packager Users

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

MV

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Nov 3, 2017, 10:58:48 AM11/3/17
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Hello,

I'm facing to a new problem. I'm trying to obtain live CMAF content in several qualities using Shaka packager library from TS content sent via UDP.

In my program, I initialize the parameters as follows:

    for (unsigned int n_v = 1; n_v <= num_video_qualities; n_v++){

        stream_descriptor.input = "udp://0.0.0.0:" + std::to_string(port + 10*(n_v - 1)) + "?interface=159.23.209.11";
        stream_descriptor.stream_selector = "video";

        dest_video = dest_dir + "video_q" + std::to_string(n_v) + "/";

        mkdir(dest_video.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);


        stream_descriptor.output = dest_video + "video_q"  + std::to_string(n_v) + "_init.mp4";
        stream_descriptor.segment_template = dest_video + "seg_q" + std::to_string(n_v) + "_$Number%04d$.m4s";
        if(format == "hls")
            stream_descriptor.hls_playlist_name = "playlist_q" + std::to_string(n_v) + ".m3u8";
    }

Using port=21234 and 2 qualities, the Shaka's output is the following: (First I print the parameter values)


Template: [...]/mp4packager_MP4/video_q1/seg_q1_$Number%04d$.m4s
Playlist: playlist_q1.m3u8
Input: udp://0.0.0.0:21234?interface=159.23.209.11
Output: [...]/mp4packager_MP4/video_q1/video_q1_init.mp4

Template:  [...]/mp4packager_MP4/video_q2/seg_q2_$Number%04d$.m4s
Playlist: playlist_q2.m3u8
Input: udp://0.0.0.0:21244?interface=159.23.209.11
Output: [...]/mp4packager_MP4/video_q2/video_q2_init.mp4
[1103/155955:INFO:demuxer.cc(90)] Demuxer::Run() on file 'udp://0.0.0.0:21234?interface=159.23.209.11'.
[1103/155955:INFO:demuxer.cc(162)] Initialize Demuxer for file 'udp://0.0.0.0:21234?interface=159.23.209.11'.
[1103/155955:INFO:demuxer.cc(90)] Demuxer::Run() on file 'udp://0.0.0.0:21244?interface=159.23.209.11'.
[1103/155955:INFO:demuxer.cc(162)] Initialize Demuxer for file 'udp://0.0.0.0:21244?interface=159.23.209.11'.

[1103/160011:WARNING:h26x_byte_to_unit_stream_converter.cc(91)] Seeing varying NAL unit of type 7. You may need to set --strip_parameter_set_nalus=false during packaging to generate a playable stream.
[1103/160011:WARNING:es_parser_h264.cc(133)] H.264 decoder configuration has changed.
[1103/160011:WARNING:h26x_byte_to_unit_stream_converter.cc(91)] Seeing varying NAL unit of type 7. You may need to set --strip_parameter_set_nalus=false during packaging to generate a playable stream.


The generated content is shown below:

[... mp4packager_MP4]$ ls -la
total 16
drwxrwxr-x 4 ... ...  109 Nov  3 16:01 .
drwxrwxr-x 5 ... ...   71 Nov  3 15:59 ..
-rw-rw-r-- 1 ... ...  270 Nov  3 16:01 master_playlist.m3u8
-rw-rw-r-- 1 ... ...  180 Nov  3 16:00 playlist_q1.m3u8
-rw-rw-r-- 1 ... ... 1608 Nov  3 16:01 playlist_q2.m3u8
drwxrwxr-x 2 ... ...   30 Nov  3 16:00 video_q1
drwxrwxr-x 2 ... ... 4096 Nov  3 16:01 video_q2

[... mp4packager_MP4]$ ls -la video_q1/
total 4
drwxrwxr-x 2 ... ...  30 Nov  3 16:00 .
drwxrwxr-x 4 ... ... 109 Nov  3 16:01 ..
-rw-rw-r-- 1 ... ... 803 Nov  3 16:00 video_q1_init.mp4

[... mp4packager_MP4]$ ls -la video_q2/
total 9612
drwxrwxr-x 2 ... ...   4096 Nov  3 16:01 .
drwxrwxr-x 4 ... ...    109 Nov  3 16:01 ..
-rw-rw-r-- 1 ... ... 200329 Nov  3 16:00 seg_q2_0001.m4s
-rw-rw-r-- 1 ... ... 460218 Nov  3 16:00 seg_q2_0002.m4s
-rw-rw-r-- 1 ... ...  92519 Nov  3 16:00 seg_q2_0003.m4s
-rw-rw-r-- 1 ... ... 156947 Nov  3 16:00 seg_q2_0004.m4s
-rw-rw-r-- 1 ... ... 423727 Nov  3 16:00 seg_q2_0005.m4s
-rw-rw-r-- 1 ... ...  61828 Nov  3 16:00 seg_q2_0006.m4s
-rw-rw-r-- 1 ... ... 176194 Nov  3 16:00 seg_q2_0007.m4s
-rw-rw-r-- 1 ... ... 176194 Nov  3 16:00 seg_q2_0008.m4s
-rw-rw-r-- 1 ... ...    803 Nov  3 16:00 video_q2_init.mp4

The problem is that all the segments (except the initialization segment) are stored in the folder of the second quality. That is, although the program is listening at the port of the first quality, the content generated is stored in the directory associated to the second quality. So each time two new segments are generated in the directory "video_q2", instead of, one of them at "video_q1" and the other one at "video_q2". I think it can be derivated from some problem with "segment_template".

This doesn't happen if I use the executable in the following way:
 ./packager 'in=udp://239.10.10.10:8011?interface=159.23.209.11,stream=video,init_segment=content_8011/video_8011_init.mp4,segment_template=content_8011/segm_8011_$Number$.m4s'  'in=udp://239.10.10.10:8021?interface=159.23.209.11,stream=video,init_segment=content_8021/video_8021_init.mp4,segment_template=content_8021/segm_8021_$Number$.m4s' --mpd_output manifest.mpd


Thanks in advance

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

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KongQun Yang

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Nov 3, 2017, 11:30:08 AM11/3/17
to MV, Shaka Packager Users
Hi,

That is weird. I saw some differences in the command line and library usage. Do you see problems if you convert your command line to an equivalent library change, i.e.

shaka::Packager packager;

// Setup packaging parameters.
shaka::PackagingParams packaging_params;
packaging_params.mpd_params.mpd_output = "manifest.mpd";


// Setup stream descriptors.
std::vector<shaka::StreamDescriptor> stream_descriptors;
shaka::StreamDescriptor stream_descriptor;

stream_descriptor.input = "udp://239.10.10.10:8011?interface=159.23.209.11";
stream_descriptor.stream_selector = "video";
stream_descriptor.output = "content_8011/video_8011_init.mp4";
stream_descriptor.segment_template = "content_8011/segm_8011_$Number$.m4s";
stream_descriptors.push_back(stream_descriptor);

stream_descriptor.input = "udp://239.10.10.10:8021?interface=159.23.209.11";
stream_descriptor.stream_selector = "video";
stream_descriptor.output = "content_8021/video_8021_init.mp4";
stream_descriptor.segment_template = "content_8021/segm_8021_$Number$.m4s";

stream_descriptors.push_back(stream_descriptor);

shaka::Status status = packager.Initialize(packaging_params,
                                           stream_descriptors);
if (!status.ok()) { ... }
status = packager.Run();



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

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MV

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Nov 3, 2017, 1:10:30 PM11/3/17
to Shaka Packager Users
Hi,

Thanks for your fast answer.
Yes, it is too weird.

Following your advise, I changed the code:
   
    // First quality:
    stream_descriptor.input = "udp://0.0.0.0:" + std::to_string(port); //+ "?interface=159.23.209.11";
    stream_descriptor.stream_selector = "video";
   
    std::string dest_video1 = dest_dir + "video_q1/";
    std::cout << "dest_video1: " << dest_video1.c_str() << std::endl;
    mkdir(dest_video1.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
   
    stream_descriptor.output = dest_video1 + "init_q1.mp4";
    stream_descriptor.segment_template = dest_video1 + "seg_q1_$Number%04d$.m4s";
   
    if(format == "hls")
        stream_descriptor.hls_playlist_name = "playlist_q1.m3u8";
    stream_descriptors.push_back(stream_descriptor);
   
   
    // Second quality:
    stream_descriptor.input = "udp://0.0.0.0:" + std::to_string(port+100); //+ "?interface=159.23.209.11";
    stream_descriptor.stream_selector = "video";
   
    std::string dest_video2 = dest_dir + "video_q2/";
    std::cout << "dest_video2: " << dest_video2.c_str() << std::endl;    
    mkdir(dest_video2.c_str(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
   
    stream_descriptor.output = dest_video2 + "init_q2.mp4";
    stream_descriptor.segment_template = dest_video2 + "seg_q2_$Number%04d$.m4s";
    if(format == "hls")
        stream_descriptor.hls_playlist_name = "playlist_q2.m3u8";
    stream_descriptors.push_back(stream_descriptor);
   

And the result is the same:

[... mp4packager_MP4]$ tree
.
├── master_playlist.m3u8
├── playlist_q1.m3u8
├── playlist_q2.m3u8
├── video_q1
│   └── init_q1.mp4
└── video_q2
    ├── init_q2.mp4
    ├── seg_q2_0001.m4s
    ├── seg_q2_0002.m4s
    ├── seg_q2_0003.m4s
    ├── seg_q2_0004.m4s
    ├── seg_q2_0005.m4s
    ├── seg_q2_0006.m4s
    ├── seg_q2_0007.m4s
    ├── seg_q2_0008.m4s
    ├── seg_q2_0009.m4s
    ├── seg_q2_0010.m4s
    ├── seg_q2_0011.m4s
    ├── seg_q2_0012.m4s
    ├── seg_q2_0013.m4s
    ├── seg_q2_0014.m4s
    ├── seg_q2_0015.m4s

I open two UDP datagram sockets  (port 21234 and 21334) where another program writes the TS content in two different qualities and these ports are specified as part of the input to Shaka in order to it reads from it.
And I see that different TS streams are written at their corresponding ports, but all Shaka output content (for both qualities) is stored at one of the directories.

I can't get to see what the problem is.

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


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KongQun Yang

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Nov 3, 2017, 3:16:24 PM11/3/17
to MV, Shaka Packager Users
Hi,

Do you any reason behind "all Shaka output content (for both qualities) is stored at one of the directories."?

Another possibility is that somehow the code does not receive data from one of the ports.

I have some questions and also need your help to debug a few things:

1. Rebuilt library and add debug dumps to dump cumulative read size from UDP: https://github.com/google/shaka-packager/blob/master/packager/file/udp_file.cc#L72

do {
  result =
    recvfrom(socket_, reinterpret_cast<char*>(buffer), length, 0, NULL, 0);
} while ((result == -1) && (errno == EINTR));
static int64_t cumulative_size = 0;
if (result > 0) {
  cumulative_size += result;
  LOG(INFO) << "cumulative_size " << cumulative_size;
}

2. Do you know the speed of incoming streams? All at 1x?

3. Does it work if you change the code to package only one quality, either first quality or second quality?

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


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MV

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Nov 6, 2017, 5:52:39 AM11/6/17
to Shaka Packager Users
Hi,

I have rebuilt the library following your guidelines and the output traces are the following:

[vmarting@localhost MP4Packager]$ ./MP4Packager ../../config/tesera-devel.json
[2017-11-06 12:16:58.948] [mp4packager] [info] CBE configuration file: /home/vmarting/code/quality-based-encoding/Realtime/config/demo_ibc.json
[2017-11-06 12:16:58.948] [mp4packager] [debug] width: 480, height: 270, bitrate: 350
[2017-11-06 12:16:58.948] [mp4packager] [debug] width: 640, height: 360, bitrate: 750
[2017-11-06 12:16:58.948] [mp4packager] [debug] Number of layer configurations: 2
[2017-11-06 12:16:58.948] [mp4packager] [info] Succesfully loaded configuration json file
[2017-11-06 12:16:58.949] [mp4packager] [info] --- format: hls

[2017-11-06 12:16:58.949] [mp4packager] [info] --- num_video_qualities: 2
dest_video1: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q1/
dest_video2: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q2/
[2017-11-06 12:16:58.949] [mp4packager] [info] --- segment duration: 6
[2017-11-06 12:16:58.949] [mp4packager] [info] --- subsegment duration: 6


Template: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q1/seg_q1_$Number%04d$.m4s
Playlist: playlist_q1.m3u8
Input: udp://0.0.0.0:21234
Output: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q1/init_q1.mp4

Template: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q2/seg_q2_$Number%04d$.m4s
Playlist: playlist_q2.m3u8
Input: udp://0.0.0.0:21334
Output: /home/vmarting/innovation/vmg_public/content/mp4packager_MP4/video_q2/init_q2.mp4
[1106/121658:INFO:demuxer.cc(90)] Demuxer::Run() on file 'udp://0.0.0.0:21234'.
[1106/121658:INFO:demuxer.cc(162)] Initialize Demuxer for file 'udp://0.0.0.0:21234'.
[1106/121658:INFO:demuxer.cc(90)] Demuxer::Run() on file 'udp://0.0.0.0:21334'.
[1106/121658:INFO:demuxer.cc(162)] Initialize Demuxer for file 'udp://0.0.0.0:21334'.
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 1000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 2000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 3000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 4000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 5000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 6000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 7000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 8000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 9000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 10000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 11000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 12000
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[1106/121719:INFO:udp_file.cc(82)] cumulative_size 33000
[...]
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 299000
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[1106/121719:INFO:udp_file.cc(82)] cumulative_size 302000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 303000
[1106/121719:INFO:udp_file.cc(82)] cumulative_size 304000
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[1106/121725:WARNING:h26x_byte_to_unit_stream_converter.cc(91)] Seeing varying NAL unit of type 7. You may need to set --strip_parameter_set_nalus=false during packaging to generate a playable stream.
[1106/121725:WARNING:es_parser_h264.cc(133)] H.264 decoder configuration has changed.
[1106/121725:INFO:udp_file.cc(82)] cumulative_size 1183000
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[...]
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[1106/121725:INFO:udp_file.cc(82)] cumulative_size 1466748
[1106/121725:WARNING:h26x_byte_to_unit_stream_converter.cc(91)] Seeing varying NAL unit of type 7. You may need to set --strip_parameter_set_nalus=false during packaging to generate a playable stream.
[1106/121725:WARNING:es_parser_h264.cc(133)] H.264 decoder configuration has changed.
[1106/121731:INFO:udp_file.cc(82)] cumulative_size 1467748
[1106/121731:INFO:udp_file.cc(82)] cumulative_size 1468748





[... mp4packager_MP4]$ tree
.
├── master_playlist.m3u8
├── playlist_q1.m3u8
├── playlist_q2.m3u8
├── video_q1
│   └── init_q1.mp4
└── video_q2
    ├── init_q2.mp4
    ├── seg_q2_0001.m4s
    ├── seg_q2_0002.m4s
    ├── seg_q2_0003.m4s
    ├── seg_q2_0004.m4s
    └── seg_q2_0005.m4s

Last Friday, it seemed that the content associated to all qualities were stored under the same directory, but today I'm seeing that one quality is segmented correctly and the other one doesn't received at the port (I don't know if the problem happens in the other side, that is, the content aren't being written at the port associated to the first quality or if Shaka isn't managing the listening of two different ports).

The other program is writing TransportStream segments with a duration of 6 seconds (like Shaka) at the socket. Below I include some traces where the times can be observed:

[11/06/17-12:17:49:170][tesera][7425][I] - +-+-+ segment: 480x270@350-Q3045-African-Fixed_segment_0005.ts   length:676424
----- writeToSocket => segment_name: 480x270@350-Q3045-African-Fixed_segment_0005.ts    -  innerNumSegment: 5
[11/06/17-12:17:49:172][tesera][7425][D] - Sending segment data to MP4Packager (port:21234, num_bytes:676424)

[11/06/17-12:17:49:173][tesera][7425][I] - +-+-+ segment: 640x360@750-Q3334-African-Fixed_segment_0005.ts   length:1010312
----- writeToSocket => segment_name: 640x360@750-Q3334-African-Fixed_segment_0005.ts    -  innerNumSegment: 5
[11/06/17-12:17:49:178][tesera][7425][D] - Sending segment data to MP4Packager (port:21334, num_bytes:1010312)

Therefore, a segment was sent completely at 11/06/17-12:17:49:172 by the port 21234, whereas the other segment was sent at  11/06/17-12:17:49:178 (6 milliseconds after) by the port 21334.

Thank you so much for your help. I really appreciate it.
 


With one quality, the problem doesn't occur.

-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)



-- KongQun Yang (KQ)


-- KongQun Yang (KQ)


-- KongQun Yang (KQ)

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KongQun Yang

unread,
Nov 6, 2017, 3:04:28 PM11/6/17
to MV, Shaka Packager Users
Hi,

It does look like it receives data from only one port. Let's print the
file_name to confirm:

do {
result =
recvfrom(socket_, reinterpret_cast<char*>(buffer), length, 0, NULL, 0);
} while ((result == -1) && (errno == EINTR));
static int64_t cumulative_size = 0;
if (result > 0) {
cumulative_size += result;
LOG(INFO) << *file_name() <<* ": cumulative_size " << cumulative_size;
}

Btw, do you have answer to my other questions:

2. Do you know the speed of incoming streams? All at 1x?

3. Does it work if you change the code to package only one quality, either
first quality or second quality?


-- KongQun Yang (KQ)

On Mon, Nov 6, 2017 at 2:52 AM, MV <v.martin....@gmail.com> wrote:

> Hi,
>
>>>>>>>>>>>> The first case is *using a MP4 input content*:
>>>>>>>>>>>> The second case is *using a TS input content*:
>>>>>>>>>>>>>> stream_descriptor.stream_selector = "video";
>>>>>>>>>>>>>> stream_descriptor.output = "~/shaka-results/video_$Number
>>>>>>>>>>>>>> $.ts";
>>>>>>>>>>>>>> stream_descriptor.segment_template = "video_$Number$.ts";
>>>>>>>>>>>>>> stream_descriptor.skip_encryption = true;
>>>>>>>>>>>>>> stream_descriptor.trick_play_factor = 0;
>>>>>>>>>>>>>> stream_descriptor.hls_playlist_name = "playlist.m3u8";
>>>>>>>>>>>>>> stream_descriptors.push_back(stream_descriptor);
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> shaka::Status status = packager.Initialize(packaging_
>>>>>>>>>>>>>> params, stream_descriptors);
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> if (!status.ok()){
>>>>>>>>>>>>>> std::cout << "Status is NOK" << std::endl;
>>>>>>>>>>>>>> return EXIT_FAILURE;
>>>>>>>>>>>>>> }
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> status = packager.Run();
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> return EXIT_SUCCESS;
>>>>>>>>>>>>>> }
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> The compilation and linking of the library is successful, but
>>>>>>>>>>>>>> the status variable takes a no-OK value. I don't know what the correct
>>>>>>>>>>>>>> value is to initialize these parameters and above all, I don't know how to
>>>>>>>>>>>>>> configute the logging level to see the debug messages included in the code.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I appreciate any help.
>>>>>>>>>>>>>> Thanks.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> --
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>>>>>>>>>>>>>> Google Groups "Shaka Packager Users" group.
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MV

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Nov 7, 2017, 2:28:40 PM11/7/17
to Shaka Packager Users
Hi,

I have found the error. Although at the beginning I was binding the socket at "n" different ports to write the "n" different streams and Shaka will listen at these ports, however I was always passing the structure that describes the IP socket address (sockaddr_in) with the last port to the function "sendto".

I'm so sorry, it was my fault completely. Thanks for your time.


On Monday, November 6, 2017 at 9:04:28 PM UTC+1, KongQun Yang wrote:
Hi,

> [...

KongQun Yang

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Nov 7, 2017, 2:38:57 PM11/7/17
to MV, Shaka Packager Users
Cool. Glad that you figured out the problem.

-- KongQun Yang (KQ)

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