+ int64_t video_frames = idxbl->get_video_frames();
+ if( video_frames < 0 ) {
+ proxy->format = FILE_PNG;
+ proxy->png_use_alpha = 1;
+ proxy->video_length = -1;
+ }
+ else {
+ proxy->copy_format(format_asset, 0);
+ proxy->video_length = video_frames;
+ }