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DJ Z-trip - Victory Lap : The Obama Mix Pt. 2
15 septembre 2011
Mis à jour : Avril 2013
Langue : English
Type : Audio
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Matmos - Action at a Distance
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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DJ Dolores - Oslodum 2004 (includes (cc) sample of “Oslodum” by Gilberto Gil)
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Danger Mouse & Jemini - What U Sittin’ On ? (starring Cee Lo and Tha Alkaholiks)
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Cornelius - Wataridori 2
15 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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The Rapture - Sister Saviour (Blackstrobe Remix)
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Mis à jour : Septembre 2011
Langue : English
Type : Audio
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Sur d’autres sites (13925)
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I have two ffmpeg command one is for Overlay text on video and other is for add picture logo on video, i want to merge them but it's not working
18 février 2019, par Zeeshan Sheikhi want to combine these two commands
one is for overlay text on video :1) ffmpeg -i video.mp4 -vf "movie=logo.png [watermark] ; [in][watermark] overlay=10:10 [out]" -y output.mp4
2) ffmpeg -i video.mp4 -filter:v drawtext="fontfile=font/arial.ttf:text=’Text’:fontcolor=white@1.0:fontsize=30:y=h/2:x=0:enable=’between(t,6,10)’" -t 10 e :\output.mp4
i want to use both functionaties into one command. but it’s not working on my side
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While using skvideo.io.FFmpegReader and skvideo.io.FFmpegWriter for video throughput the input video and output video length differ
28 juin 2024, par Kaesebrotus AnonymousI have an h264 encoded mp4 video of about 27.5 minutes length and I am trying to create a copy of the video which excludes the first 5 frames. I am using scikit-video and ffmpeg in python for this purpose. I do not have a GPU, so I am using libx264 codec for the output video.


It generally works and the output video excludes the first 5 frames. Somehow, the output video results in a length of about 22 minutes. When visually checking the videos, the shorter video does seem slightly faster and I can identify the same frames at different timestamps. In windows explorer, when clicking properties and then details, both videos' frame rates show as 20.00 fps.


So, my goal is to have both videos of the same length, except for the loss of the first 5 frames which should result in a duration difference of 0.25 seconds, and use the same (almost same) codec and not lose quality.


Can anyone explain why this apparent loss of frames is happening ?


Thank you for your interest in helping me, please find the details below.


Here is a minimal example of what I have done.


framerate = str(20)
reader = skvideo.io.FFmpegReader(inputvideo.mp4, inputdict={'-r': framerate})
writer = skvideo.io.FFmpegWriter(outputvideo.mp4, outputdict={'-vcodec': 'libx264', '-r': framerate})

for idx,frame in enumerate(reader.nextFrame()):
 if idx < 5:
 continue
 writer.writeFrame(frame)

reader.close()
writer.close()



When I read the output video again using FFmpegReader and check the .probeInfo, I can see that the output video has less frames in total. I have also managed to replicate the same problem for shorter videos (now not excluding the first 5 frames, but only throughputting a video), e.g. 10 seconds input turns to 8 seconds output with less frames. I have also tried playing around with further parameters of the outputdict, e.g. -pix_fmt, -b. I have tried to set -time_base in the output dict to the same value as in the inputdict, but that did not seem to have the desired effect. I am not sure if the name of the parameter is right.


For additional info, I am providing the .probeInfo of the input video, of which I used 10 seconds, and the .probeInfo of the 8 second output video it produced.


**input video** .probeInfo:
input dict

{'video': OrderedDict([('@index', '0'),
 ('@codec_name', 'h264'),
 ('@codec_long_name',
 'H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10'),
 ('@profile', 'High 4:4:4 Predictive'),
 ('@codec_type', 'video'),
 ('@codec_tag_string', 'avc1'),
 ('@codec_tag', '0x31637661'),
 ('@width', '4096'),
 ('@height', '3000'),
 ('@coded_width', '4096'),
 ('@coded_height', '3000'),
 ('@closed_captions', '0'),
 ('@film_grain', '0'),
 ('@has_b_frames', '0'),
 ('@sample_aspect_ratio', '1:1'),
 ('@display_aspect_ratio', '512:375'),
 ('@pix_fmt', 'yuv420p'),
 ('@level', '60'),
 ('@chroma_location', 'left'),
 ('@field_order', 'progressive'),
 ('@refs', '1'),
 ('@is_avc', 'true'),
 ('@nal_length_size', '4'),
 ('@id', '0x1'),
 ('@r_frame_rate', '20/1'),
 ('@avg_frame_rate', '20/1'),
 ('@time_base', '1/1200000'),
 ('@start_pts', '0'),
 ('@start_time', '0.000000'),
 ('@duration_ts', '1984740000'),
 ('@duration', '1653.950000'),
 ('@bit_rate', '3788971'),
 ('@bits_per_raw_sample', '8'),
 ('@nb_frames', '33079'),
 ('@extradata_size', '43'),
 ('disposition',
 OrderedDict([('@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',
 OrderedDict([('tag',
 [OrderedDict([('@key', 'language'),
 ('@value', 'und')]),
 OrderedDict([('@key', 'handler_name'),
 ('@value', 'VideoHandler')]),
 OrderedDict([('@key', 'vendor_id'),
 ('@value', '[0][0][0][0]')])])]))])}

**output video** .probeInfo:
{'video': OrderedDict([('@index', '0'),
 ('@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', '4096'),
 ('@height', '3000'),
 ('@coded_width', '4096'),
 ('@coded_height', '3000'),
 ('@closed_captions', '0'),
 ('@film_grain', '0'),
 ('@has_b_frames', '2'),
 ('@pix_fmt', 'yuv420p'),
 ('@level', '60'),
 ('@chroma_location', 'left'),
 ('@field_order', 'progressive'),
 ('@refs', '1'),
 ('@is_avc', 'true'),
 ('@nal_length_size', '4'),
 ('@id', '0x1'),
 ('@r_frame_rate', '20/1'),
 ('@avg_frame_rate', '20/1'),
 ('@time_base', '1/10240'),
 ('@start_pts', '0'),
 ('@start_time', '0.000000'),
 ('@duration_ts', '82944'),
 ('@duration', '8.100000'),
 ('@bit_rate', '3444755'),
 ('@bits_per_raw_sample', '8'),
 ('@nb_frames', '162'),
 ('@extradata_size', '47'),
 ('disposition',
 OrderedDict([('@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',
 OrderedDict([('tag',
 [OrderedDict([('@key', 'language'),
 ('@value', 'und')]),
 OrderedDict([('@key', 'handler_name'),
 ('@value', 'VideoHandler')]),
 OrderedDict([('@key', 'vendor_id'),
 ('@value', '[0][0][0][0]')]),
 OrderedDict([('@key', 'encoder'),
 ('@value',
 'Lavc61.8.100 libx264')])])]))])}



I used 10 seconds by adding this to the bottom of the loop shown above :


if idx >= 200:
 break



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How to add background music to a video file on a specific video second ? In node-fluent-ffmpeg
31 mai 2021, par edpseI have a 12sec long audio.mp3 file
and video.mp4 is 60sec long.



I need to insert audio.mp3 on the 40th second of the video.



How to do it with node-fluent-ffmpeg ?