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Les Miserables
9 décembre 2019, par
Mis à jour : Décembre 2019
Langue : français
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VideoHandle
8 novembre 2019, par
Mis à jour : Novembre 2019
Langue : français
Type : Video
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Somos millones 1
21 juillet 2014, par
Mis à jour : Juin 2015
Langue : français
Type : Video
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Mis à jour : Avril 2014
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Pourquoi Obama lit il mes mails ?
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Mis à jour : Février 2014
Langue : français
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IMG 0222
6 octobre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Image
Autres articles (103)
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Qu’est ce qu’un éditorial
21 juin 2013, parEcrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
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Vous pouvez personnaliser le formulaire de création d’un éditorial.
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Activation de l’inscription des visiteurs
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Sur d’autres sites (11604)
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FFmpeg C demo generates "Could not update timestamps for skipped samples" warning
14 juillet 2024, par aabijiWhen I run my demo code I get these warnings when testing it on a webm video :


[opus @ 0x5ec0fc1b4580] Could not update timestamps for skipped samples.
[opus @ 0x5ec0fc1b4580] Could not update timestamps for discarded samples.


But it's not limited to webm, I also get this warning when running with a mp4 :


[aac @ 0x61326fb83700] Could not update timestamps for skipped samples.


I know I'm getting warnings because ffmpeg must be skipping packets, but I have no idea why. Why are we skipping packets (and if that's not the problem, what is) and how can we fix the problem ?


Here's my code for context :


#include <libavcodec></libavcodec>avcodec.h>
#include <libavformat></libavformat>avformat.h>

int main()
{
 int ret = 0;

 const AVCodec* codec;
 AVFormatContext* fmt_ctx = avformat_alloc_context();

 const char* file2 = "/home/aabiji/Videos/sync-test.webm";
 if ((ret = avformat_open_input(&fmt_ctx, file2, NULL, NULL)) < 0) {
 av_log(NULL, AV_LOG_ERROR, "Couldn't open input file\n");
 return -1;
 }

 ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_AUDIO, -1, -1, &codec, 0);
 if (ret < 0) {
 av_log(NULL, AV_LOG_ERROR, "Couldn't find a media stream\n");
 return -1;
 }

 int stream_index = ret;
 AVStream* media = fmt_ctx->streams[stream_index];

 AVCodecContext* codec_context = avcodec_alloc_context3(codec);
 if (avcodec_parameters_to_context(codec_context, media->codecpar) < 0) {
 return -1;
 }

 if ((ret = avcodec_open2(codec_context, codec, NULL)) < 0) {
 av_log(NULL, AV_LOG_ERROR, "Couldn't open media decoder\n");
 return -1;
 }

 AVPacket* packet = av_packet_alloc();
 AVFrame* frame = av_frame_alloc();

 while ((ret = av_read_frame(fmt_ctx, packet)) >= 0) {
 if (packet->stream_index != stream_index) {
 continue;
 }

 ret = avcodec_send_packet(codec_context, packet);
 if (ret < 0) {
 break; // Error
 }

 while (ret >= 0) {
 ret = avcodec_receive_frame(codec_context, frame);
 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN)) {
 break;
 } else if (ret < 0) {
 fprintf(stderr, "Error during decoding\n");
 break;
 }
 av_frame_unref(frame);
 }

 av_packet_unref(packet);
 }

 avcodec_flush_buffers(codec_context);

 av_packet_unref(packet);
 av_frame_free(&frame);
 av_packet_free(&packet);
 avcodec_free_context(&codec_context);
 avformat_close_input(&fmt_ctx);
 return 0;
}


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Ffmpeg RTSP stream with size=N/A bitrate=N/A [closed]
6 octobre 2024, par ComycosWhen I try to stream a video it seems to work but bitrate and size are N/A
frame= 277 fps= 26 q=-1.0 size=N/A time=00:00:11.07 bitrate=N/A speed=1.05x

I run the following command to stream a video to a RTSP server :

ffmpeg -re -stream_loop -1 -i idurre-2024-09-17-12h33m19s.mp4 -c copy -f rtsp -rtsp_transport tcp rtsp://localhost:8554/test

The output ffmpeg is like this :


ffmpeg version 7.1 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 39.100 / 59. 39.100
 libavcodec 61. 19.100 / 61. 19.100
 libavformat 61. 7.100 / 61. 7.100
 libavdevice 61. 3.100 / 61. 3.100
 libavfilter 10. 4.100 / 10. 4.100
 libswscale 8. 3.100 / 8. 3.100
 libswresample 5. 3.100 / 5. 3.100
 libpostproc 58. 3.100 / 58. 3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x127704880] st: 0 edit list: 1 Missing key frame while searching for timestamp: 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x127704880] st: 0 edit list 1 Cannot find an index entry before timestamp: 0.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'idurre-2024-09-17-12h33m19s.mp4':
 Metadata:
 major_brand : isom
 minor_version : 0
 compatible_brands: mp41avc1
 creation_time : 2024-09-17T10:34:16.000000Z
 encoder : vlc 3.0.21 stream output
 encoder-eng : vlc 3.0.21 stream output
 Duration: 00:00:55.68, start: 0.000000, bitrate: 16205 kb/s
 Stream #0:0[0x1](eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709, progressive), 1920x1080, 16203 kb/s, 25 fps, 25 tbr, 1000k tbn (default)
 Metadata:
 creation_time : 2024-09-17T10:34:16.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
Output #0, rtsp, to 'rtsp://localhost:8554/test':
 Metadata:
 major_brand : isom
 minor_version : 0
 compatible_brands: mp41avc1
 encoder : Lavf61.7.100
 Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709, progressive), 1920x1080, q=2-31, 16203 kb/s, 25 fps, 25 tbr, 90k tbn (default)
 Metadata:
 creation_time : 2024-09-17T10:34:16.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
Press [q] to stop, [?] for help
frame= 516 fps= 26 q=-1.0 size=N/A time=00:00:20.63 bitrate=N/A speed=1.03x 

[q] command received. Exiting.

[out#0/rtsp @ 0x6000008e0240] video:40672KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 528 fps= 26 q=-1.0 Lsize=N/A time=00:00:21.11 bitrate=N/A speed=1.02x 


The server I'm streaming to is a MediaMTX which is supposed to receive the stream. It seems to be connected as it logs it :


mediamtx-rtsp | 2024/10/06 10:35:13 INF MediaMTX v1.9.0
mediamtx-rtsp | 2024/10/06 10:35:13 INF configuration loaded from /mediamtx.yml
mediamtx-rtsp | 2024/10/06 10:35:13 INF [RTSP] listener opened on :8554 (TCP), :8000 (UDP/RTP), :8001 (UDP/RTCP)
mediamtx-rtsp | 2024/10/06 10:35:13 INF [SRT] listener opened on :8890 (UDP)
mediamtx-rtsp | 2024/10/06 10:35:16 INF [RTSP] [conn 192.168.65.1:17069] opened
mediamtx-rtsp | 2024/10/06 10:35:16 INF [RTSP] [session b3bb2623] created by 192.168.65.1:17069
mediamtx-rtsp | 2024/10/06 10:35:16 INF [RTSP] [session b3bb2623] is publishing to path 'test', 1 track (H264)


But when I try to read it with ffplay nothing is showing...


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FFmpeg - record from stream terminating unexpectedly using kokorin/Jaffree ffmpeg wrapper for Java
18 avril 2024, par pyrmonI am programming a Spring Boot Application using Maven and Java 21. I am trying to record a stream from a url and save it to a mkv file. I intend to do this with kokorin/Jaffree in version 2023.09.10. The recording seems to work ok, however longer videos are terminating unexpectedly. Sometimes after 5 minutes, other times an hour or even longer. Sometimes with Exit Code 0 and sometimes with 1.


I have implemented the recording like this :


@Override
 public void startRecording(RecordingSchedule recordingSchedule) {
 logger.info("Starting recording for schedule with filename {}", recordingSchedule.getFileName());

 String m3uUrl = recordingSchedule.getM3uUrl();
 LocalDateTime endTime = timeUtils.parseStringToLocalDateTime(recordingSchedule.getEndTime());
 LocalDateTime stopTime = endTime.plusSeconds(20);
 String timeToRecord = timeUtils.calculateTimeToRecord(stopTime);
 Path outputPath = Paths.get("/recordings/" + recordingSchedule.getFileName());

 try {
 FFmpeg.atPath()
 .addInput(UrlInput.fromUrl(m3uUrl))
 .addArgument("-xerror")
 .addArguments("-reconnect", "5")
 .addArguments("-reconnect_streamed", "5")
 .addArguments("-reconnect_delay_max", "20")
 .addArguments("-t", timeToRecord)
 .addArguments("-c", "copy")
 .addOutput(
 UrlOutput.toPath(outputPath))
 .setLogLevel(LogLevel.WARNING)
 .execute();
 logger.info("Recording complete. Output file: {}", outputPath.toAbsolutePath());
 } catch (Exception e) {
 logger.error("Error recording M3U stream {}: {}", recordingSchedule.getFileName(), e.getMessage());
 }
 }


And I am calling the method like this :

executorConfig.executorService().submit(() -> ffmpegService.startRecording(recording));

Any ideas what I am doing wrong ?
Here are the log lines at the beginning and end of recording of the past two attempts :


2024-04-18T00:54:48.689+02:00 INFO 1 --- [pool-2-thread-1] m.s.r.service.impl.FfmpegServiceImpl : Starting recording for schedule with filename Example1.mkv
2024-04-18T00:54:48.697+02:00 WARN 1 --- [pool-2-thread-1] c.github.kokorin.jaffree.ffmpeg.FFmpeg : ProgressListener isn't set, progress won't be reported
2024-04-18T00:54:48.698+02:00 INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler : Command constructed:
ffmpeg -loglevel level+warning -i http://example.stream.url.com -n -xerror -reconnect 5 -reconnect_streamed 5 -reconnect_delay_max 20 -t 10771 -c copy /recordings/Example1.mkv
2024-04-18T00:54:48.698+02:00 INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler : Starting process: ffmpeg
2024-04-18T00:54:48.701+02:00 INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler : Waiting for process to finish
2024-04-18T01:31:02.633+02:00 WARN 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [h264 @ 0x559cd22dd940] [warning] Increasing reorder buffer to 2
2024-04-18T01:31:02.633+02:00 INFO 1 --- [pool-2-thread-1] c.g.k.jaffree.process.ProcessHandler : Process has finished with status: 0
2024-04-18T01:31:02.734+02:00 INFO 1 --- [pool-2-thread-1] m.s.r.service.impl.FfmpegServiceImpl : Recording complete. Output file: /recordings/Example1.mkv

2024-04-18T03:54:48.678+02:00 INFO 1 --- [pool-2-thread-2] m.s.r.service.impl.FfmpegServiceImpl : Starting recording for schedule with filename Example2.mkv
2024-04-18T03:54:48.678+02:00 WARN 1 --- [pool-2-thread-2] c.github.kokorin.jaffree.ffmpeg.FFmpeg : ProgressListener isn't set, progress won't be reported
2024-04-18T03:54:48.678+02:00 INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler : Command constructed:
ffmpeg -loglevel level+warning -i http://example.stream.url.com/ -n -xerror -reconnect 5 -reconnect_streamed 5 -reconnect_delay_max 20 -t 11431 -c copy /recordings/Example2.mkv
2024-04-18T03:54:48.678+02:00 INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler : Starting process: ffmpeg
2024-04-18T03:54:48.679+02:00 INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler : Waiting for process to finish
2024-04-18T04:57:22.256+02:00 WARN 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [h264 @ 0x55707ba988c0] [warning] Increasing reorder buffer to 3
2024-04-18T04:58:47.455+02:00 ERROR 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [NULL @ 0x55707ba988c0] [error] Picture timing SEI payload too large
2024-04-18T04:58:47.456+02:00 ERROR 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [NULL @ 0x55707ba988c0] [error] non-existing PPS 1 referenced
2024-04-18T04:58:47.456+02:00 WARN 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [matroska @ 0x55707ba9a380] [warning] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
2024-04-18T04:58:47.456+02:00 ERROR 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [matroska @ 0x55707ba9a380] [error] Can't write packet with unknown timestamp
2024-04-18T04:58:47.463+02:00 ERROR 1 --- [ StdErr] c.g.k.jaffree.process.BaseStdReader : [error] av_interleaved_write_frame(): Invalid argument
2024-04-18T04:58:47.463+02:00 INFO 1 --- [pool-2-thread-2] c.g.k.jaffree.process.ProcessHandler : Process has finished with status: 1
2024-04-18T04:58:47.564+02:00 ERROR 1 --- [pool-2-thread-2] m.s.r.service.impl.FfmpegServiceImpl : Error recording M3U stream Example2.mkv: Process execution has ended with non-zero status: 1. Check logs for detailed error message.


They were supposed to run nearly 3 hours and the other one over 3 hours. And with the timestamps you can see that they are not running nearly as long.
Thank you for your help !


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