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Autres articles (20)
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Qualité du média après traitement
21 juin 2013, parLe bon réglage du logiciel qui traite les média est important pour un équilibre entre les partis ( bande passante de l’hébergeur, qualité du média pour le rédacteur et le visiteur, accessibilité pour le visiteur ). Comment régler la qualité de son média ?
Plus la qualité du média est importante, plus la bande passante sera utilisée. Le visiteur avec une connexion internet à petit débit devra attendre plus longtemps. Inversement plus, la qualité du média est pauvre et donc le média devient dégradé voire (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)
Sur d’autres sites (6542)
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Dumping and playing h264 bytestream from RTSP webcam
18 octobre 2011, par thekMy goal is to connect (rtsp) to camera, get h264 stream from rtp packages, save it as a bytestream to file and be able to play it (with ffplay or vlc). The only problem is that my result stream gives me errors (and a nice gray rectangle, sometimes with something moving - like only P frames are decoded) while playing.
Here is my DESCRIBE response from rtsp server (ip replaced with ) :
10:04:18.387 [New I/O client worker #1-1] INFO rtsp.WebcamClientResponseHandler - Sending DESCRIBE request: DESCRIBE rtsp://<server>:<port>/channel1 RTSP/1.0
-------status---------
200 OK
-------headers---------
CSeq : 2
Date : Wed, Jan 07 2009 19:05:09 GMT
Content-Base : rtsp://<server>/channel1/
Content-Type : application/sdp
Content-Length : 433
-------content---------
v=0
o=- 515949295799 1 IN IP4 <server>
s=Session streamed by stream
i=1
t=0 0
a=tool:LIVE555 Streaming Media v2009.01.26
a=type:broadcast
a=control:*
a=range:npt=0-
a=x-qt-text-nam:Session streamed by stream
a=x-qt-text-inf:1
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:128
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;profile-level-id=420028;sprop-parameter-sets=Z0IAKOkCg/I=,aM44gA==
a=control:tracks
</server></server></port></server>And server sends me RTP packages with non IDR frames and fragmented (type=28) IDR frames. First ones are written to file, fragmented are unpacked.
The result byte stream is :NAL SPS NAL PPS NAL FRAME1 NAL FRAME2 ... NAL FRAMEN
where NAL is (hex) 00 00 01
and SPS is (decoded Z0IAKOkCg/I= from sprop-parameter-sets): 67 42 00 28 e9 02 83 f2
and PPS is (decoded aM44gA==): 68 ce 38 80I found similar topic with same steps taken :
how-to-process-raw-udp-packets-so-that-they-can-be-decoded-by-a-decoder-filter-i
but I can't see what am I missing.Could anyone give me some clue what may be wrong ?
This is a link to generated h264 file :
a.h264Below I'm attaching some more information from playing my stream.
Playing my video with ffplay -f h264 a.h264 gives me following output (and a gray rectangle) :
ffplay version 0.8.4-4:0.8.4-0ubuntu1~jon1, Copyright (c) 2003-2011 the FFmpeg developers
built on Sep 25 2011 09:45:09 with gcc 4.4.3
configuration: --extra-version='4:0.8.4-0ubuntu1~jon1' --prefix=/usr --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
libavutil 51. 9. 1 / 51. 9. 1
libavcodec 53. 7. 0 / 53. 7. 0
libavformat 53. 4. 0 / 53. 4. 0
libavdevice 53. 1. 1 / 53. 1. 1
libavfilter 2. 23. 0 / 2. 23. 0
libswscale 2. 0. 0 / 2. 0. 0
libpostproc 52. 0. 0 / 52. 0. 0
[h264 @ 0x184d4c0] Missing reference picture
[h264 @ 0x184d4c0] decode_slice_header error
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errors
[h264 @ 0x1822640] max_analyze_duration 5000000 reached at 5000000
[h264 @ 0x1822640] Estimating duration from bitrate, this may be inaccurate
Input #0, h264, from 'a.h264':
Duration: N/A, bitrate: N/A
Stream #0.0: Video: h264 (Baseline), yuv420p, 320x240, 25 fps, 25 tbr, 1200k tbn, 50 tbc
[h264 @ 0x184d4c0] Missing reference pictureq= 3KB sq= 0B f=0/0
[h264 @ 0x184d4c0] decode_slice_header error
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errors
[h264 @ 0x184d4c0] QP 4294967283 out of rangeKB sq= 0B f=0/0 0/0
[h264 @ 0x184d4c0] decode_slice_header error
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errors
[h264 @ 0x184d4c0] Missing reference picture
[h264 @ 0x184d4c0] decode_slice_header error
[h264 @ 0x184d4c0] mmco: unref short failure
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errors
[h264 @ 0x184d4c0] P sub_mb_type 5 out of range at 8 0
[h264 @ 0x184d4c0] error while decoding MB 8 0
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errors
[h264 @ 0x184d4c0] QP 4294967283 out of range
[h264 @ 0x184d4c0] decode_slice_header error
[h264 @ 0x184d4c0] concealing 300 DC, 300 AC, 300 MV errorsRunning h264_analyse (http://h264bitstream.sourceforge.net/) on my stream gives me :
./h264_analyze a.h264
!! Found NAL at offset 3 (0x0003), size 8 (0x0008)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 3
nal_unit_type : 7 ( Sequence parameter set )
======= SPS =======
profile_idc : 66
constraint_set0_flag : 0
constraint_set1_flag : 0
constraint_set2_flag : 0
constraint_set3_flag : 0
reserved_zero_4bits : 0
level_idc : 40
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 : 0
pic_order_cnt_type : 0
log2_max_pic_order_cnt_lsb_minus4 : 1
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 : 19
pic_height_in_map_units_minus1 : 14
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 : 0
=== VUI ===
aspect_ratio_info_present_flag : 0
aspect_ratio_idc : 0
sar_width : 0
sar_height : 0
overscan_info_present_flag : 0
overscan_appropriate_flag : 0
video_signal_type_present_flag : 0
video_format : 0
video_full_range_flag : 0
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 : 0
num_units_in_tick : 0
time_scale : 0
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 : 0
motion_vectors_over_pic_boundaries_flag : 0
max_bytes_per_pic_denom : 0
max_bits_per_mb_denom : 0
log2_max_mv_length_horizontal : 0
log2_max_mv_length_vertical : 0
num_reorder_frames : 0
max_dec_frame_buffering : 0
=== 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 14 (0x000E), size 4 (0x0004)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 3
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 : 0
pic_init_qs_minus26 : 0
chroma_qp_index_offset : 0
deblocking_filter_control_present_flag : 0
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 : 16
!! Found NAL at offset 21 (0x0015), size 480 (0x01E0)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 1
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 2
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 : -7
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 504 (0x01F8), size 324 (0x0144)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 2
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 4
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 : -7
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 831 (0x033F), size 300 (0x012C)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 3
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 6
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 : -7
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 1134 (0x046E), size 825 (0x0339)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 4
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 8
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 : -9
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 1962 (0x07AA), size 754 (0x02F2)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 5
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 10
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 : -9
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 2719 (0x0A9F), size 824 (0x0338)
==================== NAL ====================
forbidden_zero_bit : 0
nal_ref_idc : 2
nal_unit_type : 1 ( Coded slice of a non-IDR picture )
======= Slice Header =======
first_mb_in_slice : 0
slice_type : 5 ( P slice only )
pic_parameter_set_id : 0
frame_num : 6
field_pic_flag : 0
bottom_field_flag : 0
idr_pic_id : 0
pic_order_cnt_lsb : 12
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 : -9
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 3546 (0x0DDA), size 628 (0x0274)
==================== NAL ====================
[...] -
lavc/vaapi_encode_h265 : Add GPB frame support for hevc_vaapi
17 mars 2022, par Linjie Fulavc/vaapi_encode_h265 : Add GPB frame support for hevc_vaapi
Use GPB frames to replace regular P/B frames if backend driver does not
support it.
GPB :
Generalized P and B picture. Regular P/B frames replaced by B
frames with previous-predict only, L0 == L1. Normal B frames
still have 2 different ref_lists and allow bi-predictionSigned-off-by : Linjie Fu <linjie.fu@intel.com>
Signed-off-by : Fei Wang <fei.w.wang@intel.com> -
FFmpeg errors when adding a new song to queue in Discord bot
5 novembre 2023, par FerasI am facing issues with my Discord bot, which is designed to play music from YouTube and Spotify. The bot uses
pytubeandyoutube-dlto download the audio and then plays it using Discord'sFFmpegPCMAudio. The bot is able to play a song correctly, but errors occur as soon as I try to add a new song to the queue. Here are some of the error messages I'm receiving :

[aac @ 0000017d8fe84ac0] channel element 0.10 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0000017d8fe84ac0] channel element 3.12 is not allocated
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0000017d8fe84ac0] channel element 2.12 is not allocated
...
[aac @ 0000017d8fe84ac0] Prediction is not allowed in AAC-LC.
Error while decoding stream #0:0: Invalid data found when processing input
[aac @ 0000017d8fe84ac0] Number of scalefactor bands in group (56) exceeds limit (47).
Error while decoding stream #0:0: Invalid data found when processing input


Here's how I'm using FFmpeg in my code :


ctx.voice_client.play(discord.FFmpegPCMAudio(executable="ffmpeg", source=new_song['file_path'], options="-err_detect ignore_err -strict -2 -loglevel warning"), after=lambda e: play_next(ctx))


The first song plays without any issues, but as soon as I add a new song to the queue, these errors appear.


How can I resolve these errors ?


I have tried adjusting FFmpeg options and ensuring the downloaded files are intact, but the errors persist.


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