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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
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Sur d’autres sites (10034)
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Increasing Website Traffic : 11 Tips To Attract Visitors
25 août 2023, par Erin — Analytics Tips, MarketingFor your website and business to succeed, you need to focus on building traffic.
However, you aren’t the only one with that goal in mind.
There are millions of other websites trying to increase their traffic as well. With that much competition, it’s important to make sure your website stands out. Accomplishing that can require a great deal of strategy.
We’ve compiled a list of tips to help you develop a solid plan for increasing website traffic, to expand your reach, grow your audience and boost customer engagement levels — creating more opportunities for your business.Using these tips, more visitors will find their way to your website — meaning more customers for your business.
Why is website traffic important ?
Website traffic is essentially the number of people visiting your website. When someone lands on your site, they’re considered a visitor and increase your website traffic.
When your website traffic is high, you’ll get more clicks, customer interactions and brand engagement. As a result, search engines will have a positive impression of your website and send more people there, meaning even more people will see your content and have the opportunity to buy your product.
When using a website for your business or any other venture, tracking your website traffic using a web analytics solution like Matomo is critical.
With over 200 million actively maintained and visited websites in 2023, it’s important to make sure yours stands out if you want to increase your website traffic and grow your online presence.
11 tips for increasing website traffic
Here are 11 tips to increase your organic traffic and elevate your business.
1. Perfect your SEO
Optimising your website to show up in search engine results shouldn’t be overlooked, as 63% of consumers start researching a product by using a search engine. Search engine optimisation, or SEO, increases the visibility and discoverability of your website on search engine results pages (SERPs). SEO targets organic searches, which means it doesn’t add to social media traffic, direct traffic or referrals, and it isn’t paid traffic.
SEO is number one on this list for a reason — most of these tips will directly, or indirectly, improve your SEO efforts.
Steps to improve your search engine optimisation can include :
- Using relevant keywords that are incorporated naturally throughout your content
- Using a web analytics tool like Matomo, with its search keyword feature, to gain insights and identify opportunities for improvement
- Using descriptive meta titles and meta descriptions
- Link to your own content internally with descriptive anchor tags, and make sure unused pages are removed
- Keeping your target audience in mind and marketing your content toward them
- Making sure your website’s structure is optimised to be mobile-friendly, fast and responsive — such as with Matomo’s SEO Web Vitals feature, which monitors key metrics like your website’s page speed and loading performance, pivotal for optimising search engine results
2. Research the competition
It’s important to remember that while your business might be unique, it’s likely not the only one in its field. Thousands of other websites from other companies are also looking to improve their website traffic and increase sales, and you have to outcompete them.
Looking at what your competitors are doing is vital from a strategic perspective. You can see what their content looks like, how they’re framing their specific use cases and what target audience they’re marketing toward.
Knowing what your competitors are doing can help you find ways to improve your content and make it unique. Are your competitors missing a specific use case or neglecting a particular audience ? Fill in their content gaps on your website, and pick up the traffic they’re missing.
3. Create high-quality, evergreen content
If your content is high-quality, visitors will read more of it and stay longer on your site. This obviously increases the likelihood they will purchase your product or service, and it tells search engines that your website is a good answer for a search query.
High-quality content will also be shared more often, leading to even more website traffic. You should aim to develop content that doesn’t lose relevance over time (aka “evergreen content”). If you include time-sensitive data, statistics or content in your website, blog posts or articles, it’ll be relevant only around that time frame.
While this month’s viral content is highly popular, it likely won’t be relevant in a few months. Instead, if you ensure your content is evergreen, it will continue to get engagement long after it’s published.
4. Implement creative visuals
It’s important to have engaging, fun and interactive media on your website to keep visitors on your site longer. Like good content, interesting visuals (and the resulting longer visits) can translate to more purchases (and favourable assessments by search engines).
Media can take the form of videos, infographics, images or web graphics.
With Matomo’s Media Analytics feature, you can automatically gain even deeper insights into how your visitors engage with your media content, enhancing your understanding of their preferences and behaviours.
If you have interesting, captivating visuals, visitors will be more likely to stay on your website longer and see what you have to offer. Without captivating visuals to break up walls of text, you’ll likely find visitors will tend to leave your site in favour of something more engaging.
Just make sure you design your visuals with your target audience in mind. Flashy, fun graphics might not be a good fit for a professional audience, but they’re great for younger audiences. If you get your audience correct, they may also share the images with others. Depending on your business, that might be a useful infographic shared across LinkedIn, or a picture of a clever use case shared on Pinterest.
As a bonus, if other companies use your graphics on their websites, that earns you some backlinks — more on those in a bit.
5. Create a comprehensive knowledge base
Having a knowledge base is critical to making sure your service or product is well understood and well documented, especially in the tech industry. If a visitor or potential customer is interested in your product or service, they need to know exactly what it will do for them and that they have a good foundation of support in case they need help. A knowledge base is also a good place for internal links (more on those in a bit).
Visitors can also use your knowledge base as a source of information, and if they cite you as a source, that’ll lead right back to more website traffic for you (see our backlinks section for more about this). If your website is a good source of information, visitors will come back to it again and again.
6. Use social media often and consistently
Digital marketing nowadays heavily relies on social media platforms. Having an online presence no longer means just having a website — if you’re not using social media sites, you’re missing out on a huge portion of potential visitors and customers.
A strong social media presence with profiles on platforms like Facebook, X (formerly Twitter), Instagram or LinkedIn can be invaluable for increasing your website traffic. Visitors to your social media profiles will click on regularly shared content, read your blog posts and possibly become customers.
Participating in relevant communities and networking with other companies in groups in your industry can also be invaluable. If you participate in online communities and forums for your niche, you can offer insight, answer questions and plug your website. All of this will increase your clicks, which will increase your website traffic.
If you’ve managed to build your own community on social media, make sure to keep them engaged ! Implementing your own forum, hosting live chats and Q&As, offering helpful and engaging content will make sure visitors keep coming back and spreading the word.
7. Use email marketing or newsletters
Having an email list and sending marketing emails or newsletters is a great way to increase website traffic. You can offer exclusive content, and promise discounts or resources to your subscribers for when they return to your website. This will help keep your loyal audience engaged, entice new customers to subscribe to your newsletter, give you a chance to upsell to people who have already expressed an interest in your product and potentially convert curious subscribers into customers.
8. Make sure your content can earn backlinks
A backlink is when a website links to a different website — ideally using relevant anchor text — and it’s an effective strategy for increasing referral traffic, that is, visitors who get to your website via a link on another website. The more backlinks you have, the more your referral traffic will increase. Social share buttons make it easy for people to cite you on social platforms, too.
We’ve already talked about making expert content that’s link-worthy, but also make sure that you’re creating linkable assets (like those interesting visuals mentioned earlier), building relationships with other sites that will link to you (like by inviting an expert or influencer to write on your page and promote it from their platform, or by writing your own guest content for their sites) and sharing your own content. All of this can help increase your referral traffic, particularly when you’re linked from websites with a higher domain authority than you have.
You can also make sure your website is listed in online directories. Some sites will do interviews and roundups, as well — these are great opportunities to increase your backlinks.
9. Optimise your CTR
Click-through rate, or CTR, is the percentage of users who click on specific links to your website. A high CTR means your visitors are following a link — whether in an advertisement, a search result or a social media post — and a low CTR means they’re passing it by. Optimising your CTR can greatly improve your website traffic.
To improve CTR, identify successful elements such as copy, imagery, and offers in your ads, enabling you to amplify effective elements and minimise less impactful ones.
10. Ensure your website is responsive and mobile-friendly
If a visitor is frustrated by your site being slow, laggy, clunky or not mobile-friendly, they won’t stay long. That doesn’t look good to search engines if that’s how your visitors got there. Your website needs to be clean, responsive, user-friendly and accessible.
If your website is slow, try increasing your website’s performance by :
- Optimising images : Reduce the size of images and compress them for faster load times. Opt for JPEG format for photos and PNG format for graphics.
- Limit the use of plugins : If you are using a CMS like WordPress, consider removing plugins that are unnecessary or not essential.
- Embrace lazy loading : To further enhance site speed and reduce initial load times, set up your site to load images and content only as visitors scroll down. Prioritising the content and images at the top of the page makes the site feel faster. Some CMS platforms will offer this option, but others may require a bit of coding to set this up.
Many people rely on their phones to research services or products, especially if they’re doing a quick search. Make sure your website is friendly to mobile users. It should scale vertically and scroll smoothly so users aren’t frustrated when using your site. They should be able to find the info they need immediately without any technical issues.
11. Track your website’s metrics
As you test out each of these strategies to increase your web traffic, don’t forget to closely analyse the performance of your site. To truly understand the impact of your efforts, you’ll need a reliable web analytics solution. Think of a dependable web analytics solution as your website’s GPS. Without it, you’d be lost, unsure of your direction and missing out on valuable insights to steer your growth.
Matomo is a powerful web analytics tool that can help you do just that by providing information on your site visitors and campaign performance, complemented by an array of behavioural analytics features that delve into user interactions. Among these, our heatmap feature stands out, enabling greater insights into user interactions and optimisation of your site’s effectiveness.
Google Analytics is another powerful analytics option, though it has challenges with data accuracy ; there are multiple other web analytics solutions as well.
Regardless of what web analytics solution you choose, the process of analysing your website metrics is incredibly important for identifying areas of improvement to increase website traffic.
Increasing your web traffic is a process
Increasing website traffic isn’t something you accomplish overnight. It’s a comprehensive, ongoing endeavour that requires constant analysis and fine-tuning.
By applying these tips to create consistent, high-quality content that gets spotlighted on search engines, shared on social media and returned to again and again, you’ll see a steady stream of increased traffic.
With Matomo, you can understand your visitor behaviour to see what works and what doesn’t as you work to increase your website traffic. Get your free 21-day trial now. No credit card required.
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how to extract audio from video using ffmpeg c++
29 septembre 2020, par daenerysI am trying to write c++ code on how to extract audio from mp4 format file. I have compiled the examples in ffmpeg library and tried to run the demuxing_decoding.c file. The problem is that on running the code, it starts to decode way more than the actual file size and decodes wrong codec format (the decoded files cant be run).



here is the demuxing_decoding.c that I am trying to run :



#include 

#include <libavutil></libavutil>opt.h>
#include <libavcodec></libavcodec>avcodec.h>
#include <libavutil></libavutil>channel_layout.h>
#include <libavutil></libavutil>common.h>
#include <libavutil></libavutil>imgutils.h>
#include <libavutil></libavutil>mathematics.h>
#include <libavutil></libavutil>samplefmt.h>

#define INBUF_SIZE 4096
#define AUDIO_INBUF_SIZE 20480
#define AUDIO_REFILL_THRESH 4096

/* check that a given sample format is supported by the encoder */
static int check_sample_fmt(AVCodec *codec, enum AVSampleFormat sample_fmt)
{
 const enum AVSampleFormat *p = codec->sample_fmts;

 while (*p != AV_SAMPLE_FMT_NONE) {
 if (*p == sample_fmt)
 return 1;
 p++;
 }
 return 0;
}

/* just pick the highest supported samplerate */
static int select_sample_rate(AVCodec *codec)
{
 const int *p;
 int best_samplerate = 0;

 if (!codec->supported_samplerates)
 return 44100;

 p = codec->supported_samplerates;
 while (*p) {
 best_samplerate = FFMAX(*p, best_samplerate);
 p++;
 }
 return best_samplerate;
}

/* select layout with the highest channel count */
static int select_channel_layout(AVCodec *codec)
{
 const uint64_t *p;
 uint64_t best_ch_layout = 0;
 int best_nb_channels = 0;

 if (!codec->channel_layouts)
 return AV_CH_LAYOUT_STEREO;

 p = codec->channel_layouts;
 while (*p) {
 int nb_channels = av_get_channel_layout_nb_channels(*p);

 if (nb_channels > best_nb_channels) {
 best_ch_layout = *p;
 best_nb_channels = nb_channels;
 }
 p++;
 }
 return best_ch_layout;
}

/*
 * Audio encoding example
 */
static void audio_encode_example(const char *filename)
{
 AVCodec *codec;
 AVCodecContext *c= NULL;
 AVFrame *frame;
 AVPacket pkt;
 int i, j, k, ret, got_output;
 int buffer_size;
 FILE *f;
 uint16_t *samples;
 float t, tincr;

 printf("Encode audio file %s\n", filename);

 /* find the MP2 encoder */
 codec = avcodec_find_encoder(AV_CODEC_ID_MP2);
 if (!codec) {
 fprintf(stderr, "Codec not found\n");
 exit(1);
 }

 c = avcodec_alloc_context3(codec);
 if (!c) {
 fprintf(stderr, "Could not allocate audio codec context\n");
 exit(1);
 }

 /* put sample parameters */
 c->bit_rate = 64000;

 /* check that the encoder supports s16 pcm input */
 c->sample_fmt = AV_SAMPLE_FMT_S16;
 if (!check_sample_fmt(codec, c->sample_fmt)) {
 fprintf(stderr, "Encoder does not support sample format %s",
 av_get_sample_fmt_name(c->sample_fmt));
 exit(1);
 }

 /* select other audio parameters supported by the encoder */
 c->sample_rate = select_sample_rate(codec);
 c->channel_layout = select_channel_layout(codec);
 c->channels = av_get_channel_layout_nb_channels(c->channel_layout);

 /* open it */
 if (avcodec_open2(c, codec, NULL) < 0) {
 fprintf(stderr, "Could not open codec\n");
 exit(1);
 }

 f = fopen(filename, "wb");
 if (!f) {
 fprintf(stderr, "Could not open %s\n", filename);
 exit(1);
 }

 /* frame containing input raw audio */
 frame = av_frame_alloc();
 if (!frame) {
 fprintf(stderr, "Could not allocate audio frame\n");
 exit(1);
 }

 frame->nb_samples = c->frame_size;
 frame->format = c->sample_fmt;
 frame->channel_layout = c->channel_layout;

 /* the codec gives us the frame size, in samples,
 * we calculate the size of the samples buffer in bytes */
 buffer_size = av_samples_get_buffer_size(NULL, c->channels, c->frame_size,
 c->sample_fmt, 0);
 if (buffer_size < 0) {
 fprintf(stderr, "Could not get sample buffer size\n");
 exit(1);
 }
 samples = av_malloc(buffer_size);
 if (!samples) {
 fprintf(stderr, "Could not allocate %d bytes for samples buffer\n",
 buffer_size);
 exit(1);
 }
 /* setup the data pointers in the AVFrame */
 ret = avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
 (const uint8_t*)samples, buffer_size, 0);
 if (ret < 0) {
 fprintf(stderr, "Could not setup audio frame\n");
 exit(1);
 }

 /* encode a single tone sound */
 t = 0;
 tincr = 2 * M_PI * 440.0 / c->sample_rate;
 for (i = 0; i < 200; i++) {
 av_init_packet(&pkt);
 pkt.data = NULL; // packet data will be allocated by the encoder
 pkt.size = 0;

 for (j = 0; j < c->frame_size; j++) {
 samples[2*j] = (int)(sin(t) * 10000);

 for (k = 1; k < c->channels; k++)
 samples[2*j + k] = samples[2*j];
 t += tincr;
 }
 /* encode the samples */
 ret = avcodec_encode_audio2(c, &pkt, frame, &got_output);
 if (ret < 0) {
 fprintf(stderr, "Error encoding audio frame\n");
 exit(1);
 }
 if (got_output) {
 fwrite(pkt.data, 1, pkt.size, f);
 av_free_packet(&pkt);
 }
 }

 /* get the delayed frames */
 for (got_output = 1; got_output; i++) {
 ret = avcodec_encode_audio2(c, &pkt, NULL, &got_output);
 if (ret < 0) {
 fprintf(stderr, "Error encoding frame\n");
 exit(1);
 }

 if (got_output) {
 fwrite(pkt.data, 1, pkt.size, f);
 av_free_packet(&pkt);
 }
 }
 fclose(f);

 av_freep(&samples);
 av_frame_free(&frame);
 avcodec_close(c);
 av_free(c);
}

/*
 * Audio decoding.
 */
static void audio_decode_example(const char *outfilename, const char *filename)
{
 AVCodec *codec;
 AVCodecContext *c= NULL;
 int len;
 FILE *f, *outfile;
 uint8_t inbuf[AUDIO_INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
 AVPacket avpkt;
 AVFrame *decoded_frame = NULL;

 av_init_packet(&avpkt);

 printf("Decode audio file %s to %s\n", filename, outfilename);

 /* find the mpeg audio decoder */
 codec = avcodec_find_decoder(AV_CODEC_ID_MP2);
 if (!codec) {
 fprintf(stderr, "Codec not found\n");
 exit(1);
 }

 c = avcodec_alloc_context3(codec);
 if (!c) {
 fprintf(stderr, "Could not allocate audio codec context\n");
 exit(1);
 }

 /* open it */
 if (avcodec_open2(c, codec, NULL) < 0) {
 fprintf(stderr, "Could not open codec\n");
 exit(1);
 }

 f = fopen(filename, "rb");
 if (!f) {
 fprintf(stderr, "Could not open %s\n", filename);
 exit(1);
 }
 outfile = fopen(outfilename, "wb");
 if (!outfile) {
 av_free(c);
 exit(1);
 }

 /* decode until eof */
 avpkt.data = inbuf;
 avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);

 while (avpkt.size > 0) {
 int i, ch;
 int got_frame = 0;

 if (!decoded_frame) {
 if (!(decoded_frame = av_frame_alloc())) {
 fprintf(stderr, "Could not allocate audio frame\n");
 exit(1);
 }
 }

 len = avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
 if (len < 0) {
 fprintf(stderr, "Error while decoding\n");
 exit(1);
 }
 if (got_frame) {
 /* if a frame has been decoded, output it */
 int data_size = av_get_bytes_per_sample(c->sample_fmt);
 if (data_size < 0) {
 /* This should not occur, checking just for paranoia */
 fprintf(stderr, "Failed to calculate data size\n");
 exit(1);
 }
 for (i=0; inb_samples; i++)
 for (ch=0; chchannels; ch++)
 fwrite(decoded_frame->data[ch] + data_size*i, 1, data_size, outfile);
 }
 avpkt.size -= len;
 avpkt.data += len;
 avpkt.dts =
 avpkt.pts = AV_NOPTS_VALUE;
 if (avpkt.size < AUDIO_REFILL_THRESH) {
 /* Refill the input buffer, to avoid trying to decode
 * incomplete frames. Instead of this, one could also use
 * a parser, or use a proper container format through
 * libavformat. */
 memmove(inbuf, avpkt.data, avpkt.size);
 avpkt.data = inbuf;
 len = fread(avpkt.data + avpkt.size, 1,
 AUDIO_INBUF_SIZE - avpkt.size, f);
 if (len > 0)
 avpkt.size += len;
 }
 }

 fclose(outfile);
 fclose(f);

 avcodec_close(c);
 av_free(c);
 av_frame_free(&decoded_frame);
}

/*
 * Video encoding example
 */
static void video_encode_example(const char *filename, int codec_id)
{
 AVCodec *codec;
 AVCodecContext *c= NULL;
 int i, ret, x, y, got_output;
 FILE *f;
 AVFrame *frame;
 AVPacket pkt;
 uint8_t endcode[] = { 0, 0, 1, 0xb7 };

 printf("Encode video file %s\n", filename);

 /* find the mpeg1 video encoder */
 codec = avcodec_find_encoder(codec_id);
 if (!codec) {
 fprintf(stderr, "Codec not found\n");
 exit(1);
 }

 c = avcodec_alloc_context3(codec);
 if (!c) {
 fprintf(stderr, "Could not allocate video codec context\n");
 exit(1);
 }

 /* put sample parameters */
 c->bit_rate = 400000;
 /* resolution must be a multiple of two */
 c->width = 352;
 c->height = 288;
 /* frames per second */
 c->time_base = (AVRational){1,25};
 /* emit one intra frame every ten frames
 * check frame pict_type before passing frame
 * to encoder, if frame->pict_type is AV_PICTURE_TYPE_I
 * then gop_size is ignored and the output of encoder
 * will always be I frame irrespective to gop_size
 */
 c->gop_size = 10;
 c->max_b_frames = 1;
 c->pix_fmt = AV_PIX_FMT_YUV420P;

 if (codec_id == AV_CODEC_ID_H264)
 av_opt_set(c->priv_data, "preset", "slow", 0);

 /* open it */
 if (avcodec_open2(c, codec, NULL) < 0) {
 fprintf(stderr, "Could not open codec\n");
 exit(1);
 }

 f = fopen(filename, "wb");
 if (!f) {
 fprintf(stderr, "Could not open %s\n", filename);
 exit(1);
 }

 frame = av_frame_alloc();
 if (!frame) {
 fprintf(stderr, "Could not allocate video frame\n");
 exit(1);
 }
 frame->format = c->pix_fmt;
 frame->width = c->width;
 frame->height = c->height;

 /* the image can be allocated by any means and av_image_alloc() is
 * just the most convenient way if av_malloc() is to be used */
 ret = av_image_alloc(frame->data, frame->linesize, c->width, c->height,
 c->pix_fmt, 32);
 if (ret < 0) {
 fprintf(stderr, "Could not allocate raw picture buffer\n");
 exit(1);
 }

 /* encode 1 second of video */
 for (i = 0; i < 25; i++) {
 av_init_packet(&pkt);
 pkt.data = NULL; // packet data will be allocated by the encoder
 pkt.size = 0;

 fflush(stdout);
 /* prepare a dummy image */
 /* Y */
 for (y = 0; y < c->height; y++) {
 for (x = 0; x < c->width; x++) {
 frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3;
 }
 }

 /* Cb and Cr */
 for (y = 0; y < c->height/2; y++) {
 for (x = 0; x < c->width/2; x++) {
 frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2;
 frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5;
 }
 }

 frame->pts = i;

 /* encode the image */
 ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
 if (ret < 0) {
 fprintf(stderr, "Error encoding frame\n");
 exit(1);
 }

 if (got_output) {
 printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 fwrite(pkt.data, 1, pkt.size, f);
 av_free_packet(&pkt);
 }
 }

 /* get the delayed frames */
 for (got_output = 1; got_output; i++) {
 fflush(stdout);

 ret = avcodec_encode_video2(c, &pkt, NULL, &got_output);
 if (ret < 0) {
 fprintf(stderr, "Error encoding frame\n");
 exit(1);
 }

 if (got_output) {
 printf("Write frame %3d (size=%5d)\n", i, pkt.size);
 fwrite(pkt.data, 1, pkt.size, f);
 av_free_packet(&pkt);
 }
 }

 /* add sequence end code to have a real mpeg file */
 fwrite(endcode, 1, sizeof(endcode), f);
 fclose(f);

 avcodec_close(c);
 av_free(c);
 av_freep(&frame->data[0]);
 av_frame_free(&frame);
 printf("\n");
}

/*
 * Video decoding example
 */

static void pgm_save(unsigned char *buf, int wrap, int xsize, int ysize,
 char *filename)
{
 FILE *f;
 int i;

 f = fopen(filename,"w");
 fprintf(f, "P5\n%d %d\n%d\n", xsize, ysize, 255);
 for (i = 0; i < ysize; i++)
 fwrite(buf + i * wrap, 1, xsize, f);
 fclose(f);
}

static int decode_write_frame(const char *outfilename, AVCodecContext *avctx,
 AVFrame *frame, int *frame_count, AVPacket *pkt, int last)
{
 int len, got_frame;
 char buf[1024];

 len = avcodec_decode_video2(avctx, frame, &got_frame, pkt);
 if (len < 0) {
 fprintf(stderr, "Error while decoding frame %d\n", *frame_count);
 return len;
 }
 if (got_frame) {
 printf("Saving %sframe %3d\n", last ? "last " : "", *frame_count);
 fflush(stdout);

 /* the picture is allocated by the decoder, no need to free it */
 snprintf(buf, sizeof(buf), outfilename, *frame_count);
 pgm_save(frame->data[0], frame->linesize[0],
 frame->width, frame->height, buf);
 (*frame_count)++;
 }
 if (pkt->data) {
 pkt->size -= len;
 pkt->data += len;
 }
 return 0;
}

static void video_decode_example(const char *outfilename, const char *filename)
{
 AVCodec *codec;
 AVCodecContext *c= NULL;
 int frame_count;
 FILE *f;
 AVFrame *frame;
 uint8_t inbuf[INBUF_SIZE + AV_INPUT_BUFFER_PADDING_SIZE];
 AVPacket avpkt;

 av_init_packet(&avpkt);

 /* set end of buffer to 0 (this ensures that no overreading happens for damaged mpeg streams) */
 memset(inbuf + INBUF_SIZE, 0, AV_INPUT_BUFFER_PADDING_SIZE);

 printf("Decode video file %s to %s\n", filename, outfilename);

 /* find the mpeg1 video decoder */
 codec = avcodec_find_decoder(AV_CODEC_ID_MPEG1VIDEO);
 if (!codec) {
 fprintf(stderr, "Codec not found\n");
 exit(1);
 }

 c = avcodec_alloc_context3(codec);
 if (!c) {
 fprintf(stderr, "Could not allocate video codec context\n");
 exit(1);
 }

 if (codec->capabilities & AV_CODEC_CAP_TRUNCATED)
 c->flags |= AV_CODEC_FLAG_TRUNCATED; // we do not send complete frames

 /* For some codecs, such as msmpeg4 and mpeg4, width and height
 MUST be initialized there because this information is not
 available in the bitstream. */

 /* open it */
 if (avcodec_open2(c, codec, NULL) < 0) {
 fprintf(stderr, "Could not open codec\n");
 exit(1);
 }

 f = fopen(filename, "rb");
 if (!f) {
 fprintf(stderr, "Could not open %s\n", filename);
 exit(1);
 }

 frame = av_frame_alloc();
 if (!frame) {
 fprintf(stderr, "Could not allocate video frame\n");
 exit(1);
 }

 frame_count = 0;
 for (;;) {
 avpkt.size = fread(inbuf, 1, INBUF_SIZE, f);
 if (avpkt.size == 0)
 break;

 /* NOTE1: some codecs are stream based (mpegvideo, mpegaudio)
 and this is the only method to use them because you cannot
 know the compressed data size before analysing it.

 BUT some other codecs (msmpeg4, mpeg4) are inherently frame
 based, so you must call them with all the data for one
 frame exactly. You must also initialize 'width' and
 'height' before initializing them. */

 /* NOTE2: some codecs allow the raw parameters (frame size,
 sample rate) to be changed at any frame. We handle this, so
 you should also take care of it */

 /* here, we use a stream based decoder (mpeg1video), so we
 feed decoder and see if it could decode a frame */
 avpkt.data = inbuf;
 while (avpkt.size > 0)
 if (decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 0) < 0)
 exit(1);
 }

 /* some codecs, such as MPEG, transmit the I and P frame with a
 latency of one frame. You must do the following to have a
 chance to get the last frame of the video */
 avpkt.data = NULL;
 avpkt.size = 0;
 decode_write_frame(outfilename, c, frame, &frame_count, &avpkt, 1);

 fclose(f);

 avcodec_close(c);
 av_free(c);
 av_frame_free(&frame);
 printf("\n");
}

int main(int argc, char **argv)
{
 const char *output_type;

 /* register all the codecs */
 avcodec_register_all();

 if (argc < 2) {
 printf("usage: %s output_type\n"
 "API example program to decode/encode a media stream with libavcodec.\n"
 "This program generates a synthetic stream and encodes it to a file\n"
 "named test.h264, test.mp2 or test.mpg depending on output_type.\n"
 "The encoded stream is then decoded and written to a raw data output.\n"
 "output_type must be chosen between 'h264', 'mp2', 'mpg'.\n",
 argv[0]);
 return 1;
 }
 output_type = argv[1];

 if (!strcmp(output_type, "h264")) {
 video_encode_example("test.h264", AV_CODEC_ID_H264);
 } else if (!strcmp(output_type, "mp2")) {
 audio_encode_example("test.mp2");
 audio_decode_example("test.pcm", "test.mp2");
 } else if (!strcmp(output_type, "mpg")) {
 video_encode_example("test.mpg", AV_CODEC_ID_MPEG1VIDEO);
 video_decode_example("test%02d.pgm", "test.mpg");
 } else {
 fprintf(stderr, "Invalid output type '%s', choose between 'h264', 'mp2', or 'mpg'\n",
 output_type);
 return 1;
 }

 return 0;
}



What could be wrong ?
The command I used is :



./demuxing_decoding /home/cortana/Burn.mp4 /home/cortana/Desktop/Burn.mp4 /home/cortana/Desktop/Burn.aac


-
ffmpeg aresample has no effect while it works in ffplay
11 novembre 2020, par Lemon SkyI have a .ts file which is missing frames 20 seconds into the file. I'd like to fill the missing parts with silence. This works using the following command with ffplay :


ffplay -i http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts -af aresample=async=1

The same should work with ffmpeg but no silence is injected. Instead, the audio just continues playing. Example :


ffmpeg -i http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts -af aresample=async=1 -f wav -acodec pcm_s16le -ac 2 - | ffplay -i -

What am I doing wrong ?


Log :


>ffmpeg -y -nostats -loglevel trace -i http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts -af aresample=async=1 -f wav -acodec pcm_s16le -ac 2 out.wav
ffmpeg version 4.3.1-2020-11-08-full_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers
 built with gcc 10.2.0 (Rev3, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
Splitting the commandline.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-nostats' ... matched as option 'stats' (print progress report during encoding) with argument 0.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'trace'.
Reading option '-i' ... matched as input url with argument 'http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts'.
Reading option '-af' ... matched as option 'af' (set audio filters) with argument 'aresample=async=1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'wav'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'pcm_s16le'.
Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'.
Reading option 'out.wav' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option y (overwrite output files) with argument 1.
Applying option nostats (print progress report during encoding) with argument 0.
Applying option loglevel (set logging level) with argument trace.
Successfully parsed a group of options.
Parsing a group of options: input url http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts.
Successfully parsed a group of options.
Opening an input file: http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts.
[NULL @ 000001d0e7bbd200] Opening 'http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts' for reading
[http @ 000001d0e7bbe2c0] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy,data'
[tcp @ 000001d0e7bc0d00] Original list of addresses:
[tcp @ 000001d0e7bc0d00] Address 144.2.127.86 port 80
[tcp @ 000001d0e7bc0d00] Interleaved list of addresses:
[tcp @ 000001d0e7bc0d00] Address 144.2.127.86 port 80
[tcp @ 000001d0e7bc0d00] Starting connection attempt to 144.2.127.86 port 80
[tcp @ 000001d0e7bc0d00] Successfully connected to 144.2.127.86 port 80
[http @ 000001d0e7bbe2c0] request: GET /KFYI-AM_2020-10-30_09-05-26.ts HTTP/1.1
User-Agent: Lavf/58.45.100
Accept: */*
Range: bytes=0-
Connection: close
Host: tyberis.com
Icy-MetaData: 1


[http @ 000001d0e7bbe2c0] header='HTTP/1.1 206 Partial Content'
[http @ 000001d0e7bbe2c0] http_code=206
[http @ 000001d0e7bbe2c0] header='Content-Type: video/vnd.dlna.mpeg-tts'
[http @ 000001d0e7bbe2c0] header='Last-Modified: Tue, 10 Nov 2020 19:12:18 GMT'
[http @ 000001d0e7bbe2c0] header='Accept-Ranges: bytes'
[http @ 000001d0e7bbe2c0] header='ETag: "7c6a9e6895b7d61:0"'
[http @ 000001d0e7bbe2c0] header='Server: Microsoft-IIS/10.0'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Origin: *'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization, Range'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST,PUT'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Credentials: true'
[http @ 000001d0e7bbe2c0] header='Date: Wed, 11 Nov 2020 15:52:32 GMT'
[http @ 000001d0e7bbe2c0] header='Connection: close'
[http @ 000001d0e7bbe2c0] header='Content-Length: 6531496'
[http @ 000001d0e7bbe2c0] header='Content-Range: bytes 0-6531495/6531496'
[http @ 000001d0e7bbe2c0] header=''
Probing mpegts score:50 size:2048
[mpegts @ 000001d0e7bbd200] Format mpegts probed with size=2048 and score=50
[mpegts @ 000001d0e7bbd200] Probe: 7648, score: 41, dvhs_score: -2, fec_score: -2
[mpegts @ 000001d0e7bbd200] Filter: pid=0x11 type=1
[mpegts @ 000001d0e7bbd200] Filter: pid=0x0 type=1
[mpegts @ 000001d0e7bbd200] Filter: pid=0x12 type=1
[mpegts @ 000001d0e7bbd200] SDT:
[mpegts @ 000001d0e7bbd200] tag: 0x48 len=18
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] PAT:
[mpegts @ 000001d0e7bbd200] sid=0x1 pid=0x1000
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] Filter: pid=0x1000 type=1
[mpegts @ 000001d0e7bbd200] PMT: len 21
[mpegts @ 000001d0e7bbd200] sid=0x1 sec_num=0/0 version=0 tid=2
[mpegts @ 000001d0e7bbd200] pcr_pid=0x100
[mpegts @ 000001d0e7bbd200] Filter: pid=0x100 type=0
[mpegts @ 000001d0e7bbd200] stream=0 stream_type=f pid=100 prog_reg_desc=
[mpegts @ 000001d0e7bbd200] tuning done
[mpegts @ 000001d0e7bbd200] Before avformat_find_stream_info() pos: 0 bytes read:7648 seeks:0 nb_streams:1
[mpegts @ 000001d0e7bbd200] Skipping after seek
[mpegts @ 000001d0e7bbd200] SDT:
[mpegts @ 000001d0e7bbd200] tag: 0x48 len=18
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] PAT:
[mpegts @ 000001d0e7bbd200] sid=0x1 pid=0x1000
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] PMT: len 21
[mpegts @ 000001d0e7bbd200] sid=0x1 sec_num=0/0 version=0 tid=2
[mpegts @ 000001d0e7bbd200] pcr_pid=0x100
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[mpegts @ 000001d0e7bbd200] probing stream 0 pp:2500
Probing aac score:51 size:2640
Probing flac score:13 size:2640
[mpegts @ 000001d0e7bbd200] Probe with size=2640, packets=1 detected aac with score=51
[mpegts @ 000001d0e7bbd200] probed stream 0
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
 Last message repeated 11 times
[mpegts @ 000001d0e7bbd200] max_analyze_duration 5000000 reached at 5014800 microseconds st:0
[tcp @ 000001d0e7c31480] Original list of addresses:
[tcp @ 000001d0e7c31480] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Interleaved list of addresses:
[tcp @ 000001d0e7c31480] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Starting connection attempt to 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Successfully connected to 144.2.127.86 port 80
[http @ 000001d0e7bbe2c0] request: GET /KFYI-AM_2020-10-30_09-05-26.ts HTTP/1.1
User-Agent: Lavf/58.45.100
Accept: */*
Range: bytes=6281496-
Connection: close
Host: tyberis.com
Icy-MetaData: 1


[http @ 000001d0e7bbe2c0] header='HTTP/1.1 206 Partial Content'
[http @ 000001d0e7bbe2c0] http_code=206
[http @ 000001d0e7bbe2c0] header='Content-Type: video/vnd.dlna.mpeg-tts'
[http @ 000001d0e7bbe2c0] header='Last-Modified: Tue, 10 Nov 2020 19:12:18 GMT'
[http @ 000001d0e7bbe2c0] header='Accept-Ranges: bytes'
[http @ 000001d0e7bbe2c0] header='ETag: "7c6a9e6895b7d61:0"'
[http @ 000001d0e7bbe2c0] header='Server: Microsoft-IIS/10.0'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Origin: *'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization, Range'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST,PUT'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Credentials: true'
[http @ 000001d0e7bbe2c0] header='Date: Wed, 11 Nov 2020 15:52:32 GMT'
[http @ 000001d0e7bbe2c0] header='Connection: close'
[http @ 000001d0e7bbe2c0] header='Content-Length: 250000'
[http @ 000001d0e7bbe2c0] header='Content-Range: bytes 6281496-6531495/6531496'
[http @ 000001d0e7bbe2c0] header=''
[mpegts @ 000001d0e7bbd200] Skipping after seek
[mpegts @ 000001d0e7bbd200] Probe: 763, score: 5, dvhs_score: 1, fec_score: 1
[mpegts @ 000001d0e7bbd200] Probe: 8192, score: 44, dvhs_score: -3, fec_score: -3
[tcp @ 000001d0e7c31580] Original list of addresses:
[tcp @ 000001d0e7c31580] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Interleaved list of addresses:
[tcp @ 000001d0e7c31580] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Starting connection attempt to 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Successfully connected to 144.2.127.86 port 80
[http @ 000001d0e7bbe2c0] request: GET /KFYI-AM_2020-10-30_09-05-26.ts HTTP/1.1
User-Agent: Lavf/58.45.100
Accept: */*
Range: bytes=6266023-
Connection: close
Host: tyberis.com
Icy-MetaData: 1


[http @ 000001d0e7bbe2c0] header='HTTP/1.1 206 Partial Content'
[http @ 000001d0e7bbe2c0] http_code=206
[http @ 000001d0e7bbe2c0] header='Content-Type: video/vnd.dlna.mpeg-tts'
[http @ 000001d0e7bbe2c0] header='Last-Modified: Tue, 10 Nov 2020 19:12:18 GMT'
[http @ 000001d0e7bbe2c0] header='Accept-Ranges: bytes'
[http @ 000001d0e7bbe2c0] header='ETag: "7c6a9e6895b7d61:0"'
[http @ 000001d0e7bbe2c0] header='Server: Microsoft-IIS/10.0'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Origin: *'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization, Range'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST,PUT'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Credentials: true'
[http @ 000001d0e7bbe2c0] header='Date: Wed, 11 Nov 2020 15:52:32 GMT'
[http @ 000001d0e7bbe2c0] header='Connection: close'
[http @ 000001d0e7bbe2c0] header='Content-Length: 265473'
[http @ 000001d0e7bbe2c0] header='Content-Range: bytes 6266023-6531495/6531496'
[http @ 000001d0e7bbe2c0] header=''
[tcp @ 000001d0e7c31480] Original list of addresses:
[tcp @ 000001d0e7c31480] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Interleaved list of addresses:
[tcp @ 000001d0e7c31480] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Starting connection attempt to 144.2.127.86 port 80
[tcp @ 000001d0e7c31480] Successfully connected to 144.2.127.86 port 80
[http @ 000001d0e7bbe2c0] request: GET /KFYI-AM_2020-10-30_09-05-26.ts HTTP/1.1
User-Agent: Lavf/58.45.100
Accept: */*
Range: bytes=6281644-
Connection: close
Host: tyberis.com
Icy-MetaData: 1


[http @ 000001d0e7bbe2c0] header='HTTP/1.1 206 Partial Content'
[http @ 000001d0e7bbe2c0] http_code=206
[http @ 000001d0e7bbe2c0] header='Content-Type: video/vnd.dlna.mpeg-tts'
[http @ 000001d0e7bbe2c0] header='Last-Modified: Tue, 10 Nov 2020 19:12:18 GMT'
[http @ 000001d0e7bbe2c0] header='Accept-Ranges: bytes'
[http @ 000001d0e7bbe2c0] header='ETag: "7c6a9e6895b7d61:0"'
[http @ 000001d0e7bbe2c0] header='Server: Microsoft-IIS/10.0'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Origin: *'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization, Range'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST,PUT'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Credentials: true'
[http @ 000001d0e7bbe2c0] header='Date: Wed, 11 Nov 2020 15:52:33 GMT'
[http @ 000001d0e7bbe2c0] header='Connection: close'
[http @ 000001d0e7bbe2c0] header='Content-Length: 249852'
[http @ 000001d0e7bbe2c0] header='Content-Range: bytes 6281644-6531495/6531496'
[http @ 000001d0e7bbe2c0] header=''
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
 Last message repeated 88 times
[tcp @ 000001d0e7c31580] Original list of addresses:
[tcp @ 000001d0e7c31580] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Interleaved list of addresses:
[tcp @ 000001d0e7c31580] Address 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Starting connection attempt to 144.2.127.86 port 80
[tcp @ 000001d0e7c31580] Successfully connected to 144.2.127.86 port 80
[http @ 000001d0e7bbe2c0] request: GET /KFYI-AM_2020-10-30_09-05-26.ts HTTP/1.1
User-Agent: Lavf/58.45.100
Accept: */*
Range: bytes=0-
Connection: close
Host: tyberis.com
Icy-MetaData: 1


[http @ 000001d0e7bbe2c0] header='HTTP/1.1 206 Partial Content'
[http @ 000001d0e7bbe2c0] http_code=206
[http @ 000001d0e7bbe2c0] header='Content-Type: video/vnd.dlna.mpeg-tts'
[http @ 000001d0e7bbe2c0] header='Last-Modified: Tue, 10 Nov 2020 19:12:18 GMT'
[http @ 000001d0e7bbe2c0] header='Accept-Ranges: bytes'
[http @ 000001d0e7bbe2c0] header='ETag: "7c6a9e6895b7d61:0"'
[http @ 000001d0e7bbe2c0] header='Server: Microsoft-IIS/10.0'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Origin: *'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept, Authorization, Range'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Methods: GET,HEAD,OPTIONS,POST,PUT'
[http @ 000001d0e7bbe2c0] header='Access-Control-Allow-Credentials: true'
[http @ 000001d0e7bbe2c0] header='Date: Wed, 11 Nov 2020 15:52:33 GMT'
[http @ 000001d0e7bbe2c0] header='Connection: close'
[http @ 000001d0e7bbe2c0] header='Content-Length: 6531496'
[http @ 000001d0e7bbe2c0] header='Content-Range: bytes 0-6531495/6531496'
[http @ 000001d0e7bbe2c0] header=''
[mpegts @ 000001d0e7bbd200] stream 0: start_time: 1.4 duration: 1097.98
[mpegts @ 000001d0e7bbd200] format: start_time: 1.4 duration: 1097.98 (estimate from pts) bitrate=47 kb/s
[mpegts @ 000001d0e7bbd200] After avformat_find_stream_info() pos: 0 bytes read:329238 seeks:3 frames:117
Input #0, mpegts, from 'http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts':
 Duration: 00:18:17.98, start: 1.400000, bitrate: 47 kb/s
 Program 1
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100], 117, 1/90000: Audio: aac (HE-AACv2) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 45 kb/s
Successfully opened the file.
Parsing a group of options: output url out.wav.
Applying option af (set audio filters) with argument aresample=async=1.
Applying option f (force format) with argument wav.
Applying option acodec (force audio codec ('copy' to copy stream)) with argument pcm_s16le.
Applying option ac (set number of audio channels) with argument 2.
Successfully parsed a group of options.
Opening an output file: out.wav.
[file @ 000001d0e7c06200] Setting default whitelist 'file,crypto,data'
Successfully opened the file.
Stream mapping:
 Stream #0:0 -> #0:0 (aac (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
[mpegts @ 000001d0e7bbd200] Skipping after seek
[mpegts @ 000001d0e7bbd200] SDT:
[mpegts @ 000001d0e7bbd200] tag: 0x48 len=18
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] PAT:
[mpegts @ 000001d0e7bbd200] sid=0x1 pid=0x1000
[mpegts @ 000001d0e7bbd200] new_program: id=0x0001
[mpegts @ 000001d0e7bbd200] PMT: len 21
[mpegts @ 000001d0e7bbd200] sid=0x1 sec_num=0/0 version=0 tid=2
[mpegts @ 000001d0e7bbd200] pcr_pid=0x100
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
detected 4 logical cores
[Parsed_aresample_0 @ 000001d0e7be5e80] Setting 'async' to value '1'
[graph_0_in_0_0 @ 000001d0e7beeac0] Setting 'time_base' to value '1/44100'
[graph_0_in_0_0 @ 000001d0e7beeac0] Setting 'sample_rate' to value '44100'
[graph_0_in_0_0 @ 000001d0e7beeac0] Setting 'sample_fmt' to value 'fltp'
[graph_0_in_0_0 @ 000001d0e7beeac0] Setting 'channel_layout' to value '0x3'
[graph_0_in_0_0 @ 000001d0e7beeac0] tb:1/44100 samplefmt:fltp samplerate:44100 chlayout:0x3
[format_out_0_0 @ 000001d0e7bf0080] Setting 'sample_fmts' to value 's16'
[format_out_0_0 @ 000001d0e7bf0080] Setting 'channel_layouts' to value '0x3'
[AVFilterGraph @ 000001d0e7be6540] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed
[Parsed_aresample_0 @ 000001d0e7be5e80] [SWR @ 000001d0e81bb8c0] Using fltp internally between filters
[Parsed_aresample_0 @ 000001d0e7be5e80] ch:2 chl:stereo fmt:fltp r:44100Hz -> ch:2 chl:stereo fmt:s16 r:44100Hz
Output #0, wav, to 'out.wav':
 Metadata:
 ISFT : Lavf58.45.100
 Stream #0:0, 0, 1/44100: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
 Metadata:
 encoder : Lavc58.91.100 pcm_s16le
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 7 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
(...)
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 4 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
timestamp discontinuity for stream #0:0 (id=256, type=audio): 69892061, new offset= -71292061
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
[aac @ 000001d0e7c0ed80] illegal icc
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 7 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
[mpegts @ 000001d0e7bbd200] pid=100 pes_code=0x1c0
[aac @ 000001d0e7c0ed80] ChannelElement 1.0 missing
 Last message repeated 9 times
(...)
size= 5000kB time=00:00:29.02 bitrate=1411.2kbits/s speed=6.11x
video:0kB audio:5000kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001523%
Input file #0 (http://tyberis.com/KFYI-AM_2020-10-30_09-05-26.ts):
 Input stream #0:0 (audio): 625 packets read (174267 bytes); 625 frames decoded (1280000 samples);
 Total: 625 packets (174267 bytes) demuxed
Output file #0 (out.wav):
 Output stream #0:0 (audio): 625 frames encoded (1280000 samples); 625 packets muxed (5120000 bytes);
 Total: 625 packets (5120000 bytes) muxed
625 frames successfully decoded, 0 decoding errors
[AVIOContext @ 000001d0e7c2e280] Statistics: 4 seeks, 22 writeouts
[AVIOContext @ 000001d0e7bc9780] Statistics: 533494 bytes read, 3 seeks```


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