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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (74)
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Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs
Sur d’autres sites (11495)
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lavfi/lut3d : restore original interpolation speed.
26 mai 2013, par Clément Bœsch -
Revision c7c9901845 : added a speed feature on lpf level picking Change-Id : Id578f8afdeab3702fc838696
7 août 2013, par Yaowu XuChanged Paths :
Modify /vp9/encoder/vp9_onyx_if.c
Modify /vp9/encoder/vp9_onyx_int.h
Modify /vp9/encoder/vp9_picklpf.c
Modify /vp9/encoder/vp9_picklpf.h
added a speed feature on lpf level pickingChange-Id : Id578f8afdeab3702fc8386969f2d832d8f1b5420
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Android MediaRecorder setCaptureRate() and video playback speed
7 novembre 2013, par spitzanatorI've got a MediaRecorder recording video, and I'm very confused by the effect of setCaptureRate().
Specifically, I prepare my MediaRecorder as follows :
mMediaRecorder = new MediaRecorder();
mCamera.stopPreview();
mCamera.unlock();
mMediaRecorder.setCamera(mCamera);
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mMediaRecorder.setProfile(CamcorderProfile.QUALITY_TIME_LAPSE_480P);
mMediaRecorder.setCaptureRate(30f);
mMediaRecorder.setOrientationHint(270);
mMediaRecorder.setOutputFile(...);
mMediaRecorder.setPreviewDisplay(...);
mMediaRecorder.prepare();I record for five seconds (with a CountDownTimer, but that's irrelevant), and this is the file that gets generated :
$ ffmpeg -i ~/CaptureRate30fps.mp4
...
Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 30.00 (30/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/mspitz/CaptureRate30fps.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-06-04 00:52:00
Duration: 00:00:02.59, start: 0.000000, bitrate: 5238 kb/s
Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 720x480, 5235 kb/s, PAR 65536:65536 DAR 3:2, 30 fps, 30 tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2013-06-04 00:52:00Note that the Duration is just about 3 seconds. The video also plays much faster, as if it were 5 seconds of video crammed into 3.
Now, if I record by preparing my mediaRecorder exactly as above, but subtracting the setCaptureRate(30f) line, I get a file like this :
$ ffmpeg -i ~/NoSetCaptureRate.mp4
...
Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/mspitz/NoSetCaptureRate.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-06-04 00:50:41
Duration: 00:00:04.87, start: 0.000000, bitrate: 2803 kb/s
Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 720x480, 2801 kb/s, PAR 65536:65536 DAR 3:2, 16.01 fps, 90k tbr, 90k tbn, 180k tbc
Metadata:
creation_time : 2013-06-04 00:50:41Note that the Duration is as expected, about 5 seconds. The video also plays at a normal speed.
I'm using setCaptureRate(30f) because 30 frames per second is the value of my CamcorderProfile's videoFrameRate. On my Galaxy Nexus S2 (4.2.1), omitting setCaptureRate() is fine, but when I tested on a Galaxy Nexus S3 (4.1.1), omitting setCaptureRate() results in the ever-helpful "start failed -22" error when I called
mMediaRecorder.start()
.So, what am I missing ? I thought that the capture rate and the video frame rate were independent, but it's clear that they're not. Is there a way to determine programmatically what I need to set the capture rate at in order to determine that my video plays back at 1x speed ?