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• Discord,py ffmpeg and youtube_dl music bot isnt playing playlists

  5 décembre 2020, par CubacraftLP

  Hello Stackoverflow Community,
I got the following problem :

  


  Im using this code for playing music with my discord.py bot :

  


  @bot.command()
async def activate(ctx, url):
    
    YDL_OPTIONS = {'format': 'bestaudio', 'noplaylist':'True'}
    FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}
    voice = get(bot.voice_clients, guild=ctx.guild)

    if not voice.is_playing():
        with YoutubeDL(YDL_OPTIONS) as ydl:
            info = ydl.extract_info(url, download=False)
        URL = info['formats'][0]['url']
        voice.play(FFmpegPCMAudio(URL, **FFMPEG_OPTIONS))
        voice.is_playing()

        else:
            await ctx.send("Already playing song")
            return


  


  but if im now pasting a playlist link, im geting the following error :

  


  Ignoring exception in command activate:
Traceback (most recent call last):
  File "C:\Users\\PycharmProjects\MusicBot\venv\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "C:/Users//PycharmProjects/MusicBot/main.py", line 47, in activate
    URL = info['formats'][0]['url']
KeyError: 'formats'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\\PycharmProjects\MusicBot\venv\lib\site-packages\discord\ext\commands\bot.py", line 903, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\\PycharmProjects\MusicBot\venv\lib\site-packages\discord\ext\commands\core.py", line 859, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\\PycharmProjects\MusicBot\venv\lib\site-packages\discord\ext\commands\core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: KeyError: 'formats'



  


  is there a way to fix it and make my bot play playlists ?
Thank you for your answers.

  


• 3 hidden Piwik features you likely don’t know, that will make you more productive

  17 janvier 2017, par InnoCraft — Community

  At Piwik and at InnoCraft, we always aim to make features as intuitive as possible. Having thousands of features in Piwik and having to find a balance between beginners and advanced users can sometimes be a challenge. Sometimes this even leads to building hidden features that are mainly targeted for power users. The list below shows three of them, did you know any of them yet ?

  BTW : If you don’t have Piwik yet, you can try them on our Piwik Demo.

  1. Search

  When you press the letter “f”, it will activate the search bar in the top left. Once you start typing something, it will show matching reports. Say you want to view reports about “devices” but don’t remember exactly which category it is in, simply start typing “devices” and the matching entry will show up without even having to move the mouse.

  The search bar also searches for matching websites and segments. Use the arrow up and down keys to select the entry you want and press enter to confirm the selection.

  Say you don’t remember the name of a report but you know it is listed under the category “Visitor”, then start typing the name of the category and it will show all related reports.

  2. Zen Mode

  When you press the letter “z”, it will activate the Zen Mode which lets you focus on the reports and content by removing the header and left menu. To disable the Zen Mode, simply press “z” again.

  This is especially useful in combination with the search bar mentioned above, as it enables you to quickly switch between reports, websites and segments even while menu and header are hidden.

  3. Faster period change

  Changing the displayed period is a task you likely perform quite often when analyzing reports. Usually, you would first select the period and then press the button “Apply” in the date selector. Instead, you can simply double click the name of the period and it will immediately load the selected period without having to click on the “Apply” button.

  What are your hidden features in Piwik ?

  Let us know by getting in touch with us or share it with us on Facebook or Twitter.

• Libavcodec : How to tell end of access unit when decoding H.264 stream

  22 septembre 2011, par Flame

  I'm receiving H.264 video over RTP and decoding it with libavcodec. I'm unpackaging the NAL units from the RTP packets before feeding them to avcodec (including reassembling fragmentation units).

  I'm trying to show effective decoding frame rate. I used to log the time after a successful decode video call where *got_picture_ptr is non-zero. So far this worked since I only ever got video where there was one slice per frame. But now I receive video where both I and P frames consist of 2 NAL units each, of types 5 and 1 respectively. Now when I feed the either slice of a frame, decode_video return that it got a picture, and the pAVFrame->coded_picture_number is increased from every slice.

  How do I go about reliably finding the beginning or end of a video frame/picture/access unit ?

  I've dumped out a few NAL units from the stream and run them through h264_analyze from h264bitstream.

  Output from h264_analyze on 4 NAL Units

   !! Found NAL at offset 695262 (0xA9BDE), size 25 (0x0019) 
  ==================== NAL ====================
   forbidden_zero_bit : 0 
   nal_ref_idc : 1 
   nal_unit_type : 7 ( Sequence parameter set ) 
  ======= SPS =======
   profile_idc : 66 
   constraint_set0_flag : 1 
   constraint_set1_flag : 1 
   constraint_set2_flag : 1 
   constraint_set3_flag : 0 
   reserved_zero_4bits : 0 
   level_idc : 32 
   seq_parameter_set_id : 0 
   chroma_format_idc : 0 
   residual_colour_transform_flag : 0 
   bit_depth_luma_minus8 : 0 
   bit_depth_chroma_minus8 : 0 
   qpprime_y_zero_transform_bypass_flag : 0 
   seq_scaling_matrix_present_flag : 0 
   log2_max_frame_num_minus4 : 12 
   pic_order_cnt_type : 2 
     log2_max_pic_order_cnt_lsb_minus4 : 0 
     delta_pic_order_always_zero_flag : 0 
     offset_for_non_ref_pic : 0 
     offset_for_top_to_bottom_field : 0 
     num_ref_frames_in_pic_order_cnt_cycle : 0 
   num_ref_frames : 1 
   gaps_in_frame_num_value_allowed_flag : 0 
   pic_width_in_mbs_minus1 : 79 
   pic_height_in_map_units_minus1 : 44 
   frame_mbs_only_flag : 1 
   mb_adaptive_frame_field_flag : 0 
   direct_8x8_inference_flag : 1 
   frame_cropping_flag : 0 
     frame_crop_left_offset : 0 
     frame_crop_right_offset : 0 
     frame_crop_top_offset : 0 
     frame_crop_bottom_offset : 0 
   vui_parameters_present_flag : 1 
  === VUI ===
   aspect_ratio_info_present_flag : 1 
     aspect_ratio_idc : 1 
       sar_width : 0 
       sar_height : 0 
   overscan_info_present_flag : 0 
     overscan_appropriate_flag : 0 
   video_signal_type_present_flag : 1 
     video_format : 5 
     video_full_range_flag : 1 
     colour_description_present_flag : 0 
       colour_primaries : 0 
     transfer_characteristics : 0 
     matrix_coefficients : 0 
   chroma_loc_info_present_flag : 0 
     chroma_sample_loc_type_top_field : 0 
     chroma_sample_loc_type_bottom_field : 0 
   timing_info_present_flag : 1 
     num_units_in_tick : 1 
     time_scale : 25 
     fixed_frame_rate_flag : 0 
   nal_hrd_parameters_present_flag : 0 
   vcl_hrd_parameters_present_flag : 0 
     low_delay_hrd_flag : 0 
   pic_struct_present_flag : 0 
   bitstream_restriction_flag : 1 
     motion_vectors_over_pic_boundaries_flag : 1 
     max_bytes_per_pic_denom : 0 
     max_bits_per_mb_denom : 0 
     log2_max_mv_length_horizontal : 6 
     log2_max_mv_length_vertical : 6 
     num_reorder_frames : 0 
     max_dec_frame_buffering : 1 
  === HRD ===
   cpb_cnt_minus1 : 0 
   bit_rate_scale : 0 
   cpb_size_scale : 0 
   initial_cpb_removal_delay_length_minus1 : 0 
   cpb_removal_delay_length_minus1 : 0 
   dpb_output_delay_length_minus1 : 0 
   time_offset_length : 0 
   !! Found NAL at offset 695290 (0xA9BFA), size 4 (0x0004) 
  ==================== NAL ====================
   forbidden_zero_bit : 0 
   nal_ref_idc : 1 
   nal_unit_type : 8 ( Picture parameter set ) 
  ======= PPS =======
   pic_parameter_set_id : 0 
   seq_parameter_set_id : 0 
   entropy_coding_mode_flag : 0 
   pic_order_present_flag : 0 
   num_slice_groups_minus1 : 0 
   slice_group_map_type : 0 
   num_ref_idx_l0_active_minus1 : 0 
   num_ref_idx_l1_active_minus1 : 0 
   weighted_pred_flag : 0 
   weighted_bipred_idc : 0 
   pic_init_qp_minus26 : 3 
   pic_init_qs_minus26 : 0 
   chroma_qp_index_offset : 0 
   deblocking_filter_control_present_flag : 1 
   constrained_intra_pred_flag : 0 
   redundant_pic_cnt_present_flag : 0 
   transform_8x8_mode_flag : 1 
   pic_scaling_matrix_present_flag : 0 
   second_chroma_qp_index_offset : 1 
   !! Found NAL at offset 695297 (0xA9C01), size 50725 (0xC625) 
  ==================== NAL ====================
   forbidden_zero_bit : 0 
   nal_ref_idc : 1 
   nal_unit_type : 5 ( Coded slice of an IDR picture ) 
  ======= Slice Header =======
   first_mb_in_slice : 0 
   slice_type : 2 ( I slice ) 
   pic_parameter_set_id : 0 
   frame_num : 0 
   field_pic_flag : 0 
   bottom_field_flag : 0 
   idr_pic_id : 0 
   pic_order_cnt_lsb : 0 
   delta_pic_order_cnt_bottom : 0 
   redundant_pic_cnt : 0 
   direct_spatial_mv_pred_flag : 0 
   num_ref_idx_active_override_flag : 0 
   num_ref_idx_l0_active_minus1 : 0 
   num_ref_idx_l1_active_minus1 : 0 
   cabac_init_idc : 0 
   slice_qp_delta : 5 
   sp_for_switch_flag : 0 
   slice_qs_delta : 0 
   disable_deblocking_filter_idc : 0 
   slice_alpha_c0_offset_div2 : 0 
   slice_beta_offset_div2 : 0 
   slice_group_change_cycle : 0 
  === Prediction Weight Table ===
   luma_log2_weight_denom : 0 
   chroma_log2_weight_denom : 0 
   luma_weight_l0_flag : 0 
   chroma_weight_l0_flag : 0 
   luma_weight_l1_flag : 0 
   chroma_weight_l1_flag : 0 
  === Ref Pic List Reordering ===
   ref_pic_list_reordering_flag_l0 : 0 
   ref_pic_list_reordering_flag_l1 : 0 
  === Decoded Ref Pic Marking ===
   no_output_of_prior_pics_flag : 0 
   long_term_reference_flag : 0 
   adaptive_ref_pic_marking_mode_flag : 0 
   !! Found NAL at offset 746025 (0xB6229), size 38612 (0x96D4) 
  ==================== NAL ====================
   forbidden_zero_bit : 0 
   nal_ref_idc : 1 
   nal_unit_type : 5 ( Coded slice of an IDR picture ) 
  ======= Slice Header =======
   first_mb_in_slice : 1840 
   slice_type : 2 ( I slice ) 
   pic_parameter_set_id : 0 
   frame_num : 0 
   field_pic_flag : 0 
   bottom_field_flag : 0 
   idr_pic_id : 0 
   pic_order_cnt_lsb : 0 
   delta_pic_order_cnt_bottom : 0 
   redundant_pic_cnt : 0 
   direct_spatial_mv_pred_flag : 0 
   num_ref_idx_active_override_flag : 0 
   num_ref_idx_l0_active_minus1 : 0 
   num_ref_idx_l1_active_minus1 : 0 
   cabac_init_idc : 0 
   slice_qp_delta : 5 
   sp_for_switch_flag : 0 
   slice_qs_delta : 0 
   disable_deblocking_filter_idc : 0 
   slice_alpha_c0_offset_div2 : 0 
   slice_beta_offset_div2 : 0 
   slice_group_change_cycle : 0 
  === Prediction Weight Table ===
   luma_log2_weight_denom : 0 
   chroma_log2_weight_denom : 0 
   luma_weight_l0_flag : 0 
   chroma_weight_l0_flag : 0 
   luma_weight_l1_flag : 0 
   chroma_weight_l1_flag : 0 
  === Ref Pic List Reordering ===
   ref_pic_list_reordering_flag_l0 : 0 
   ref_pic_list_reordering_flag_l1 : 0 
  === Decoded Ref Pic Marking ===
   no_output_of_prior_pics_flag : 0 
   long_term_reference_flag : 0 
   adaptive_ref_pic_marking_mode_flag : 0 

  Both I slices show the frame_num = 0. The next 2 (not shown) have frame_num = 1.