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• FFMPEG(?) Error : [out#0/s16le @ 000002452f906a00] Output file does not contain any stream

  11 mars 2024, par Ondosh

  FFMPEG_OPTIONS = {
    'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5',
    'options': '-vn'}
YDL_OPTIONS = {
    'format': 'bestaudio/best',
    'extractaudio': True,
    'noplaylist': True,
    'simulate': 'True',
    'preferredquality': '192',
    'preferredcodec': 'mp3',
    'key': 'FFmpegExtractAudio'}
@bot.command(aliases=['Ping', 'PING', 'Пинг', 'ПИНГ', 'зштп', 'ЗШТП', 'Зштп',
                      'пинг'])
async def ping(ctx):
    await ctx.message.reply(f'Ping: {round(bot.latency * 1000)}ms')
#########################[PLAY MUSIC BLOCK]#########################
@bot.command()
async def add(ctx, *url):
    url = ' '.join(url)
    with yt_dlp.YoutubeDL(YDL_OPTIONS) as ydl:
        try:
            info = ydl.extract_info(url, download=False)
        except:
            info = ydl.extract_info(f"ytsearch:{url}",
                                    download=False)['entries'][0]

    URL = info['formats'][0]['url']
    name = info['title']
    time = str(datetime.timedelta(seconds=info['duration']))
    songs_queue.q_add([name, time, URL])
    embed = nextcord.Embed(description=f'Записываю [{name}]({url}) в очередь 📝',
                           colour=nextcord.Colour.red())
    await ctx.message.reply(embed=embed)
def step_and_remove(voice_client):
    if loop_flag:
        songs_queue.q_add(songs_queue.get_value()[0])
    songs_queue.q_remove()
    audio_player_task(voice_client)
def audio_player_task(voice_client):
    if not voice_client.is_playing() and songs_queue.get_value():
        voice_client.play(nextcord.FFmpegPCMAudio(
            executable="ffmpeg\\bin\\ffmpeg.exe",
            source=songs_queue.get_value()[0][2],
            **FFMPEG_OPTIONS),
            after=lambda e: step_and_remove(voice_client))
@bot.command(aliases=['Play', 'PLAY', 'играй', 'ИГРАЙ', 'Играй', 'сыграй',
                      'Сыграй', 'СЫГРАЙ', 'здфн', 'Здфн', 'ЗДФН', 'p', 'P',
                      'pl', 'PL', 'Pl', 'Плей',
                      'ПЛЕЙ', 'плей'])
async def play(ctx, *url):
    await join(ctx)
    await add(ctx, ' '.join(url))
    await ctx.message.add_reaction(emoji='🎸')
    voice_client = ctx.guild.voice_client
    audio_player_task(voice_client)
@bot.command(aliases=['Queue', 'QUEUE', 'йгугу', 'Йгугу', 'ЙГУГУ', 'очередь',
                      'Очередь', 'ОЧЕРЕДЬ', 'список', 'Список', 'СПИСОК',
                      'list', 'List', 'LIST', 'дшые', 'Дшые', 'ДШЫЕ', 'Лист',
                      'лист', 'ЛИСТ', 'песни', 'Песни', 'ПЕСНИ', 'songs',
                      'Songs', 'SONGS', 'ыщтпы', 'ЫЩТПЫ', 'Ыщтпы', 'q'])
async def queue(ctx):
    if len(songs_queue.get_value()) > 0:
        only_names_and_time_queue = []
        for i in songs_queue.get_value():
            name = i[0]
            if len(i[0]) > 30:
                name = i[0][:30] + '...'
            only_names_and_time_queue.append(f'📀 `{name:<33}   {i[1]:>20}`\n')
        c = 0
        queue_of_queues = []
        while c < len(only_names_and_time_queue):
            queue_of_queues.append(only_names_and_time_queue[c:c + 10])
            c += 10

        embed = nextcord.Embed(title=f'ОЧЕРЕДЬ [LOOP: {loop_flag}]',
                               description=''.join(queue_of_queues[0]),
                               colour=nextcord.Colour.red())
        await ctx.send(embed=embed)

        for i in range(1, len(queue_of_queues)):
            embed = nextcord.Embed(description=''.join(queue_of_queues[i]),
                                   colour=nextcord.Colour.red())
            await ctx.send(embed=embed)
    else:
        await ctx.send('Очередь пуста')


  


  There is the part of my music bot in Discord, I don't really know why it doesn't work. Actually, I tried to use someone's old code, so it needs to be fixed. I have cut out the most important parts of the code, which most likely had an error.
I found other questions, but there was another errors.
After trying to start the video, I get the following errors :
[out#0/s16le @ 000002452f906a00] Output file does not contain any stream
Error opening output file pipe:1.
Error opening output files : Invalid argument

  


• Understanding the VP8 Token Tree

  7 juin 2010, par Multimedia Mike — VP8

  I got tripped up on another part of the VP8 decoding process today. So I drew a picture to help myself understand it. Then I went back and read David Conrad’s comment on my last post regarding my difficulty understanding the VP8 spec and saw that he ran into the same problem. Since we both experienced the same hindrance in trying to sort out this matter, I thought I may as well publish the picture I drew.

  VP8 defines various trees for decoding different syntax elements. There is one tree for decoding the tokens and it is expressed in the VP8 spec as such :

  PLAIN TEXT

  C :

  1. const tree_index coef_tree [2 * (num_dct_tokens - 1)] =
  2. {
  3.  -dct_eob, 2,        /* eob = "0"  */
  4.   -DCT_0, 4,        /* 0  = "10" */
  5.   -DCT_1, 6,        /* 1  = "110" */
  6.    8, 12,
  7.    -DCT_2, 10,      /* 2  = "11100" */
  8.     -DCT_3, -DCT_4,    /* 3  = "111010", 4 = "111011" */
  9.    14, 16,
  10.     -dct_cat1, -dct_cat2, /* cat1 = "111100", cat2 = "111101" */
  11.    18, 20,
  12.     -dct_cat3, -dct_cat4, /* cat3 = "1111100", cat4 = "1111101" */
  13.     -dct_cat5, -dct_cat6 /* cat4 = "1111110", cat4 = "1111111" */
  14. } ;

  Here is what the table looks like when you make a tree out of it (click for full size image) :

  
  
  

  The catch is that it makes no sense for an end-of-block (EOB) token to follow a 0 token since EOB already indicates that the remainder of the coefficients should be 0 anyway. Thus, the spec states that, "decoding of certain DCT coefficients may skip the first branch, whose preceding coefficient is a DCT_0." I confess, I didn’t understand what "skip the first branch" meant until I drew the tree.

  
  
  

  For those wondering why it might be sub-optimal (clarity-wise) for a spec to simply regurgitate vast chunks of C code, this makes a decent case. As you can see, the spec makes certain assumptions about how a binary tree should be organized in a static array (node n points to elements n*2 and n*2+1 as its branches ; leaves are either negative or 0). This is the second method I have seen ; another piece of code (not the VP8 spec) had the nodes in the first half of the array and pointed to leaves in the second half. There must be other arrangements.

• ffmpeg set auto height

  19 juillet 2013, par conmen

  I got following command which use in generate video thumbnail :

  escapeshellcmd("/usr/local/bin/ffmpeg -ss " . ceil($time) . " -i '" . $videoPath . "' -f image2 -vframes 1 -s 150x110 " . $tFilePath)

  I want to know is that possible for the image generate in Auto Height instead of fixed Weight x Height ?

  Thanks.