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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
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Mis à jour : Février 2013
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Sur d’autres sites (14838)
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merging Multi-Track MP4 Files with ffmpeg show error time porgress bar
9 juillet 2024, par EasonWaiiI need to merge two videos into one using ffmpeg. The resulting video should have two video tracks and one audio track, with the audio track taken from the longer video.


When playing the merged video in a player like PotPlayer or VLC, it should default to playing the shorter video track. However, users should be able to switch to the other video track if they want.


The problem I am facing :
Everything is working fine, except when the player defaults to the shorter video track, it shows the timeline of the longer video track.


built with Apple clang version 15.0.0 (clang-1500.3.9.4)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/7.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
{
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output21.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf59.16.100
 Duration: 00:00:12.84, start: 0.000000, bitrate: 2207 kb/s
 Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), yuv420p(tv, progressive), 720x1280 [SAR 1:1 DAR 9:16], 1052 kb/s, 30 fps, 30 tbr, 15360 tbn
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 720x1280, 1293 kb/s, 29.83 fps, 29.83 tbr, 11456 tbn (default)
 Metadata:
 handler_name : ?Mainconcept Video Media Handler
 vendor_id : [0][0][0][0]
 Stream #0:2[0x3](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 130 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]
 "streams": [
 {
 "index": 0,
 "codec_name": "hevc",
 "codec_long_name": "H.265 / HEVC (High Efficiency Video Coding)",
 "profile": "Main",
 "codec_type": "video",
 "codec_tag_string": "hev1",
 "codec_tag": "0x31766568",
 "width": 720,
 "height": 1280,
 "coded_width": 720,
 "coded_height": 1280,
 "closed_captions": 0,
 "film_grain": 0,
 "has_b_frames": 2,
 "sample_aspect_ratio": "1:1",
 "display_aspect_ratio": "9:16",
 "pix_fmt": "yuv420p",
 "level": 93,
 "color_range": "tv",
 "chroma_location": "left",
 "field_order": "progressive",
 "refs": 1,
 "id": "0x1",
 "r_frame_rate": "30/1",
 "avg_frame_rate": "30/1",
 "time_base": "1/15360",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 196096,
 "duration": "12.766667",
 "bit_rate": "1052926",
 "nb_frames": "383",
 "extradata_size": 2480,
 "disposition": {
 "default": 0,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "non_diegetic": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "language": "und",
 "handler_name": "VideoHandler",
 "vendor_id": "[0][0][0][0]"
 }
 },
 {
 "index": 1,
 "codec_name": "h264",
 "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
 "profile": "High",
 "codec_type": "video",
 "codec_tag_string": "avc1",
 "codec_tag": "0x31637661",
 "width": 720,
 "height": 1280,
 "coded_width": 720,
 "coded_height": 1280,
 "closed_captions": 0,
 "film_grain": 0,
 "has_b_frames": 2,
 "pix_fmt": "yuv420p",
 "level": 31,
 "color_range": "tv",
 "color_space": "bt709",
 "color_transfer": "bt709",
 "color_primaries": "bt709",
 "chroma_location": "left",
 "field_order": "progressive",
 "refs": 1,
 "is_avc": "true",
 "nal_length_size": "4",
 "id": "0x2",
 "r_frame_rate": "179/6",
 "avg_frame_rate": "3448256/115597",
 "time_base": "1/11456",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 115597,
 "duration": "10.090520",
 "bit_rate": "1293284",
 "bits_per_raw_sample": "8",
 "nb_frames": "301",
 "extradata_size": 46,
 "disposition": {
 "default": 1,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "non_diegetic": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "language": "eng",
 "handler_name": "\u001fMainconcept Video Media Handler",
 "vendor_id": "[0][0][0][0]"
 }
 },
 {
 "index": 2,
 "codec_name": "aac",
 "codec_long_name": "AAC (Advanced Audio Coding)",
 "profile": "LC",
 "codec_type": "audio",
 "codec_tag_string": "mp4a",
 "codec_tag": "0x6134706d",
 "sample_fmt": "fltp",
 "sample_rate": "44100",
 "channels": 2,
 "channel_layout": "stereo",
 "bits_per_sample": 0,
 "initial_padding": 0,
 "id": "0x3",
 "r_frame_rate": "0/0",
 "avg_frame_rate": "0/0",
 "time_base": "1/44100",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 566244,
 "duration": "12.840000",
 "bit_rate": "130447",
 "nb_frames": "554",
 "extradata_size": 5,
 "disposition": {
 "default": 1,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "non_diegetic": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "language": "und",
 "handler_name": "SoundHandler",
 "vendor_id": "[0][0][0][0]"
 }
 }
 ],
 "format": {
 "filename": "output21.mp4",
 "nb_streams": 3,
 "nb_programs": 0,
 "nb_stream_groups": 0,
 "format_name": "mov,mp4,m4a,3gp,3g2,mj2",
 "format_long_name": "QuickTime / MOV",
 "start_time": "0.000000",
 "duration": "12.840000",
 "size": "3543155",
 "bit_rate": "2207573",
 "probe_score": 100,
 "tags": {
 "major_brand": "isom",
 "minor_version": "512",
 "compatible_brands": "isomiso2avc1mp41",
 "encoder": "Lavf59.16.100"
 }
 }
}




I want the timeline to display correctly according to the shorter video track when it is being played, without truncating the timeline of the longer video track and affecting its playback.


-
How video editor show real time preview of videos ? [closed]
3 juin 2024, par SWIKI am trying to create a simple video editor that combine two video by layering one over another, i can easily do it with ffmpeg, but I am not sure how can I make a preview of it before making final video ? How video editor display preview without building them ? I am looking towards create a react application.


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