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Looks like your build is the best so... any way to figure out the orientation of the video #11

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dathan opened this issue Jan 13, 2015 · 0 comments

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@dathan
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dathan commented Jan 13, 2015

I am running into a problem where the video is taken in landscape mode, and picking a frame to make an image messes up the orientation of the image.

An example
http://rocklivewests3-a.akamaihd.net/18357527/18321767_goi803evar8gzmolpth17i2jes79erme2q3j7bes.mp4

ffmpeg -i 18321767_goi803evar8gzmolpth17i2jes79erme2q3j7bes.mp4 -f ffmetadata
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/mikhail/Downloads/18321767_goi803evar8gzmolpth17i2jes79erme2q3j7bes.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isomiso2avc1
creation_time : 2014-12-16 14:54:34
Duration: 00:00:02.40, start: 0.000000, bitrate: 6588 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480, 7288 kb/s, SAR 65536:65536 DAR 4:3, 25.80 fps, 90k tbr, 90k tbn, 180k tbc (default)
Metadata:
rotate : 270
creation_time : 2014-12-16 14:54:32
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
Metadata:
creation_time : 2014-12-16 14:54:32

The rotation is 270 and picking a frame

http://rocklivewests3-a.akamaihd.net/18357527/18321767_goi803evar8gzmolpth17i2jes79erme2q3j7bes.jpg

Produces A bad rotation.

I cannot read the metadata of the original mp4 file without shelling out? Is there an undocumented api for this?

Additionally producing the gdimage does not pass the exif orientation info.

    $mov = new \ffmpeg_movie($fileSource);
    $ff_frame = $mov->getFrame(3);
    if (!$ff_frame) {
        throw new \InvalidMovieException("Unable to pull the frame");
    }

    $gd_image = $ff_frame->toGDImage();

....

thus I cannot rotate the image.

Is there anyway to get the orientation info?
Is there a way to pass orientation to the gd image?

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