I did try exporting the frames using the ffmpeg binary. The result was the same, except the output was clipped. I didn't see an option to turn on full range processing (0-255). If it's there, it's my fault for looking it over but if it isn't, it needs to be there since it's a simple call to sws_setColorspaceDetails().
Regarding your comment about libx264, wouldn't this be for encoding only? In fact, my FFmpeg source doesn't even contain libx264. The issue is strictly a DECODING issue, which I think is handled by libavcodec exclusively. I did notice what look like TWO H.264 codecs in avcodec.h, however: CODEC_ID_H264 CODEC_ID_FFH264 I tried selecting the latter with avcodec_find_decoder() but the function reported that the codec couldn't be found. It found the former just fine, which is the one that is producing the mediocre output. I'm a little confused by the way the source is organized. I was looking for something like "h264dec.c." I do realize that the decompression code is most assuredly written in assembly, and I did find h264_i386.h in libavcodec/x86/, but this has to do with CABAC decoding which I know to be very CPU intensive. I don't know if the 7D's files are encoded this way, so I don't know if trying to tweak this will even help. Anyway, I don't know assembly and even if it was just C I probably wouldn't understand the math involved. Thomas On Wed, Jan 27, 2010 at 12:16 AM, Janez Zemva <[email protected]> wrote: > I am by no means a video or ffmpeg expert, but congrats for being able > to use libavcodec at all, the documentation being as scarce as it is. > My experiences with it were much the same as yours. But your concerns > ought to be directed at libx264 rather than at libavcodec. Check out > the ffmpegs "magical" presets for libx264 usually in /usr/share/ffmpeg > for some ideas, and check in ffmpeg source how ffmpeg feeds these > presets to libx264. > > Did you try to export images with the ffmpeg utility proper? > _______________________________________________ > libav-user mailing list > [email protected] > https://lists.mplayerhq.hu/mailman/listinfo/libav-user > _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
