Hi, with the attached patch, ffmpeg avfoundation device input
is able to find my canopus dv firewire adapter.
I only have 1 format 'muxed' and it's not possible to set resolution or
framerate
via 'setValue'.
I've looked at the code in the AVRecorder sample:
https://developer.apple.com/library/mac/samplecode/AVRecorder/Introduction/Intro.html
it's able to correctly record (audio and video) from dv adapter
using almost same api calls of ffmpeg.
with my patch ffmpeg is able to record too (video only) but looks like
there is a problem with video resolution.
http://oss.netfarm.it/mplayer/upload/with-avrecorder.png
http://oss.netfarm.it/mplayer/upload/with-ffmpeg.png
and videos:
http://oss.netfarm.it/mplayer/upload/with-avrecorder.mov
http://oss.netfarm.it/mplayer/upload/with-ffmpeg.mp4
I known the patch can be improved, but I should at least solve
the resolution problem.
Any help would be appreciated
Regards
--
Gianluigi Tiesi <sher...@netfarm.it>
EDP Project Leader
Netfarm S.r.l. - http://www.netfarm.it/
Free Software: http://oss.netfarm.it/
diff --git a/libavdevice/avfoundation.m b/libavdevice/avfoundation.m
index 763e675..d4904a4 100644
--- a/libavdevice/avfoundation.m
+++ b/libavdevice/avfoundation.m
@@ -320,18 +320,16 @@ static int configure_video_device(AVFormatContext *s, AVCaptureDevice *video_dev
goto unsupported_format;
}
- if (!selected_range) {
- av_log(s, AV_LOG_ERROR, "Selected framerate (%f) is not supported by the device\n",
- framerate);
- goto unsupported_format;
- }
-
if ([video_device lockForConfiguration:NULL] == YES) {
- NSValue *min_frame_duration = [selected_range valueForKey:@"minFrameDuration"];
-
[video_device setValue:selected_format forKey:@"activeFormat"];
- [video_device setValue:min_frame_duration forKey:@"activeVideoMinFrameDuration"];
- [video_device setValue:min_frame_duration forKey:@"activeVideoMaxFrameDuration"];
+
+ if (selected_range) {
+ NSValue *min_frame_duration = [selected_range valueForKey:@"minFrameDuration"];
+ [video_device setValue:min_frame_duration forKey:@"activeVideoMinFrameDuration"];
+ [video_device setValue:min_frame_duration forKey:@"activeVideoMaxFrameDuration"];
+ }
+ else
+ av_log(s, AV_LOG_WARNING, "Selected framerate (%f) is not supported by the device\n", framerate);
} else {
av_log(s, AV_LOG_ERROR, "Could not lock device for configuration");
return AVERROR(EINVAL);
@@ -668,7 +666,7 @@ static int avf_read_header(AVFormatContext *s)
AVCaptureDevice *video_device = nil;
AVCaptureDevice *audio_device = nil;
// Find capture device
- NSArray *devices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
+ NSArray *devices = [[AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo] arrayByAddingObjectsFromArray:[AVCaptureDevice devicesWithMediaType:AVMediaTypeMuxed]];
ctx->num_video_devices = [devices count];
ctx->first_pts = av_gettime();
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