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The pirate bay depuis la Belgique
1er avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
Autres articles (58)
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Sur d’autres sites (7325)
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FFMPEG color key filter applied, output to a transparent HEVC mov file, speed is different
2 mars 2023, par Patrick VelliaI have an original recording that has the following ffprobe output :


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
 Metadata:
 major_brand : mp41
 minor_version : 538120216
 compatible_brands: mp41
 creation_time : 2023-02-28T19:06:41.000000Z
 firmware : H21.01.01.50.00
 Duration: 00:00:08.15, start: 0.000000, bitrate: 60160 kb/s
 Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuvj420p(pc, bt709), 3840x2160 [SAR 1:1 DAR 16:9], 59891 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 119.88 tbc (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro H.265
 vendor_id : [0][0][0][0]
 encoder : GoPro H.265 encoder
 timecode : 19:05:32:105
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro AAC 
 vendor_id : [0][0][0][0]
 timecode : 19:05:32:105
 Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro TCD 
 timecode : 19:05:32:105
 Stream #0:3(eng): Data: bin_data (gpmd / 0x646D7067), 76 kb/s (default)
 Metadata:
 creation_time : 2023-02-28T19:06:41.000000Z
 handler_name : GoPro MET 
Unsupported codec with id 0 for input stream 2
Unsupported codec with id 100359 for input stream 3



This video is chroma keyed, so I ran the following command the key out the green and export it to a HEVC mov container (the Apple HEVC supports alpha channel via the videotoolbox codec) :


ffmpeg -i test.mp4 -vf colorkey=0x00b140:0.3:0.1 -vcodec hevc_videotoolbox -alpha_quality 0.5 -tag:v hvc1 output1.mov



which results in this ffprobe :


Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output1.mov':
 Metadata:
 major_brand : qt 
 minor_version : 512
 compatible_brands: qt 
 encoder : Lavf58.76.100
 Duration: 00:00:08.15, start: 0.000000, bitrate: 366946 kb/s
 Stream #0:0(eng): Video: hevc (Main) (hvc1 / 0x31637668), yuv420p(tv, gbr/bt709/bt709, progressive), 3840x2160 [SAR 1:1 DAR 16:9], 367188 kb/s, 119.88 fps, 119.88 tbr, 120k tbn, 120k tbc (default)
 Metadata:
 handler_name : GoPro H.265
 vendor_id : FFMP
 encoder : Lavc58.134.100 hevc_videotoolbo
 timecode : 19:05:32:105
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 118 kb/s (default)
 Metadata:
 handler_name : GoPro AAC 
 vendor_id : [0][0][0][0]
 Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s
 Metadata:
 handler_name : GoPro H.265
 timecode : 19:05:32:105
Unsupported codec with id 0 for input stream 2



When the play the original video inside a web browser, it will play normally. As in, the video doesn't play in slo-mo but at "normal speed" which is what I actually want. User can slow it down and still have the frames necessary to keep the clarity when desired.


However, when I play the second video, it is unnaturally slow even at 2x the speed.


The only difference I can see above is that the export didn't include the second data stream (input 3).


This was recorded on a GoPro Hero 10. I am using FFMPEG 4.6.


Any help would be appreciated to fine tune the command.


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concat two videos with same format
24 mars 2023, par ttbI'm trying to concat two videos that have very similar formats :


Stream #0:0[0x1](und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv), 1920x1080 [SAR 1:1 DAR 16:9], 1141 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 224 kb/s (default)
 Metadata:
 handler_name : SoundHandler
 vendor_id : [0][0][0][0]



and


Stream #0:0(und): Video: hevc (hev1 / 0x31766568), yuv420p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 24k tbn (default)
 Metadata:
 creation_time : 2023-03-24T21:10:17.000000Z
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc60.6.101 libx265
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
 Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 341 kb/s (default)
 Metadata:
 creation_time : 2023-03-24T21:10:17.000000Z
 handler_name : Surround
 vendor_id : [0][0][0][0]



But the video ends up freezing when played. Not sure what's wrong, I matched everything ?


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Rotating gyro data in gopro footage with ffpmeg
2 juillet 2023, par FPV ShenanigansI believe orientation of gyro data in some of my gopro clips is wrong. Reelsteady runs stabilization ok but it results in even worse than initial video shaky effect. I have filmed with gopro in 90 degree with orientation locked .


Is it possible to amend metadata if ffmpeg to fix this ?


the below is an example clip


Metadata :
major_brand : isom
minor_version : 512
compatible_brands : isomiso2mp41
encoder : Lavf60.10.100
Duration : 00:04:30.22, start : 0.000000, bitrate : 119132 kb/s
Stream #0:00x1 : Video : hevc (Main 10) (hvc1 / 0x31637668), yuv420p10le(pc, bt709), 3840x3360 [SAR 1:1 DAR 8:7], 118934 kb/s, 59.94 fps, 59.94 tbr, 60k tbn (default)
Metadata :
handler_name : GoPro H.265
vendor_id : [0][0][0][0]
encoder : GoPro H.265 encoder
timecode : 13:27:43:05
Side data :
displaymatrix : rotation of -90.00 degrees
Stream #0:10x2 : Audio : aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 189 kb/s (default)
Metadata :
handler_name : GoPro AAC
vendor_id : [0][0][0][0]
Stream #0:20x3 : Data : none (tmcd / 0x64636D74)
Metadata :
handler_name : GoPro H.265
timecode : 13:27:43:05


tried this


ffmpeg.exe -i "F :\2023 THE ONLY COPY\Chasing surfers\GX010223.MP4" -c copy -metadata:s:v rotate=90 "F :\2023 THE ONLY COPY\Chasing surfers\GX010223_test.mp4"


but reelsteady can't read metadata from a new video