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Sur d’autres sites (9933)

  • FFMPEG Audio and Image to MP4 - Image Does Not Display [duplicate]

    31 décembre 2017, par Summer Developer

    This question already has an answer here :

    I am using FFMPEG to create an mp4 from variable audio and image inputs.

    Each audio is paired with one image that should loop for the duration of the audio.

    My command is thus :

    ffmpeg -i "myAudioFile.mp3" -loop 1  -i /var/www/html/storage/assets/myImagefile.png -vcodec libx264 -shortest -preset fast -acodec aac -strict -2 "myVideoFile.mp4"

    It seems to work, except in the resulting .mp4 I have audio but no video (image).

    Thank you !

  • Why VLC not display RTP stream

    5 janvier 2018, par Alexandr Lukovnikov

    I am new in RTP. I whant to start RTSP server on embeded device. Now I can whatching video file, that stored in flash memory. But when I start translate video, that encoded whith x264, VLC not display anything.
    Just buffering, nothing else

    core debug: `rtsp://172.16.50.194:1935/live1.sdp' successfully opened
    
core debug: Buffering 0%
    
packetizer_h264 debug: found NAL_SPS (sps_id=0)
    
core debug: Stream buffering done (11 ms in 133 ms)
    
core debug: Decoder wait done in 0 ms
    
packetizer_h264 debug: found NAL_PPS (pps_id=0 sps_id=0)
    
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 30 ms)
    
core error: ES_OUT_RESET_PCR called
    
core debug: Buffering 0%
    
core debug: Buffering 0%
    
core debug: Buffering 0%
    
core debug: Stream buffering done (111 ms in 706 ms)
    
core debug: Decoder wait done in 0 ms
    
core error: ES_OUT_SET_(GROUP_)PCR is called too late (pts_delay increased to 594 ms)
    
core error: ES_OUT_RESET_PCR called
    
core debug: Buffering 0%
    
...
    
core debug: Buffering 0%
    
live555 warning: no data received in 10s, eof ?
    
core debug: EOF reached

    That is Wireshark dump

    SPS slice

    1111 0100 = Profile_idc: Unknown (244)
    
0... .... = Constraint_set0_flag: 0
    
.0.. .... = Constraint_set1_flag: 0
    
..0. .... = Constraint_set2_flag: 0
    
...0 .... = Constraint_set3_flag: 0
    
.... 0... = Constraint_set4_flag: 0
    
.... .0.. = Constraint_set5_flag: 0
    
.... ..00 = Reserved_zero_2bits: 0
    
0000 1101 = Level_id: 13 [Level 1.3 768 kb/s]
    
1... .... = seq_parameter_set_id: 0
    
.001 00.. = log2_max_frame_num_minus4: 3
    
.... ..01  1... .... = pic_order_cnt_type: 2
    
.001 01.. = num_ref_frames: 4
    
.... ..1. = gaps_in_frame_num_value_allowed_flag: 1
    
.... ...0  10.. .... = pic_width_in_mbs_minus1: 1
    
..00 0001  0100 0... = pic_height_in_map_units_minus1: 39
    
.... .0.. = frame_mbs_only_flag: 0
    
.... ..0. = mb_adaptive_frame_field_flag: 0
    
.... ...1 = direct_8x8_inference_flag: 1
    
1... .... = frame_cropping_flag: 1
    
.1.. .... = frame_crop_left_offset: 0
    
..1. .... = frame_crop_left_offset: 0
    
...1 .... = frame_crop_top_offset: 0
    
.... 1... = frame_crop_bottom_offset: 0
    
.... .0.. = vui_parameters_present_flag: 0
    
.... ..1. = rbsp_stop_bit: 1
    
.... ...0 = rbsp_trailing_bits: 0

    PPS slice

     1... .... = pic_parameter_set_id: 0
    
    .1.. .... = seq_parameter_set_id: 0
    
    ..0. .... = entropy_coding_mode_flag: 0
    
    ...0 .... = pic_order_present_flag: 0
    
    .... 1... = num_slice_groups_minus1: 0
    
    .... .1.. = num_ref_idx_l0_active_minus1: 0
    
    .... ..1. = num_ref_idx_l1_active_minus1: 0
    
    .... ...0 = weighted_pred_flag: 0
    
    00.. .... = weighted_bipred_idc: 0
    
    ..00 0010  110. .... = pic_init_qp_minus26(se(v)): 11
    
    ...1 .... = pic_init_qs_minus26: 0
    
    .... 1... = chroma_qp_index_offset: 0
    
    .... .1.. = deblocking_filter_control_present_flag: 1
    
    .... ..0. = constrained_intra_pred_flag: 0
    
    .... ...0 = redundant_pic_cnt_present_flag: 0
    
    1... .... = rbsp_stop_bit: 1
    
    .000 0000 = rbsp_trailing_bits: 0

    And SEI

    x264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=10 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00

    What could be my mistake ?

  • In FFmpeg, remove warnings, but display progress meter

    24 septembre 2017, par forthrin

    How can I remove warnings, but display progress meter ? ffmpeg -loglevel error removes both !

    There is a separate option in the manual for "repeated" messages, but I think the warning doesn’t count as "repeated" because numbers vary on each line — which seems questionable in itself.

    To me it seems like the progress meter should have its own option, rather than adhere to verbosity.

    $ ffmpeg -i in.mkv -codec copy out.mp4
    
ffmpeg version 3.3.4 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with Apple LLVM version 9.0.0 (clang-900.0.37)
    
...
    
[mp4 @ 0x7f93c9006c00] Non-monotonous DTS in output stream 0:0; previous: 60720, current: 60064; changing to 60721. This may result in incorrect timestamps in the output file.
    
[mp4 @ 0x7f93c9006c00] Non-monotonous DTS in output stream 0:0; previous: 63392, current: 62736; changing to 63393. This may result in incorrect timestamps in the output file.
    
(...repeats a million times...)

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