[MOT] fix ffmpeg (#4078)

deploy/python/mot_jde_infer.py

@@ -267,7 +267,7 @@ def predict_video(detector, camera_id):
 
     if FLAGS.save_images:
         save_dir = os.path.join(FLAGS.output_dir, video_name.split('.')[-2])
-        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" {}'.format(
+        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg {}'.format(
             save_dir, out_path)
         os.system(cmd_str)
         print('Save video in {}.'.format(out_path))

deploy/python/mot_keypoint_unite_infer.py

@@ -216,7 +216,7 @@ def mot_keypoint_unite_predict_video(mot_model,
 
     if FLAGS.save_images:
         save_dir = os.path.join(FLAGS.output_dir, video_name.split('.')[-2])
-        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" {}'.format(
+        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg {}'.format(
             save_dir, out_path)
         os.system(cmd_str)
         print('Save video in {}.'.format(out_path))

deploy/python/mot_sde_infer.py

@@ -408,7 +408,7 @@ def predict_video(detector, reid_model, camera_id):
 
     if FLAGS.save_images:
         save_dir = os.path.join(FLAGS.output_dir, video_name.split('.')[-2])
-        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" {}'.format(
+        cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg {}'.format(
             save_dir, out_path)
         os.system(cmd_str)
         print('Save video in {}.'.format(out_path))

ppdet/engine/tracker.py

@@ -331,7 +331,7 @@ class Tracker(object):
             if save_videos:
                 output_video_path = os.path.join(save_dir, '..',
                                                  '{}_vis.mp4'.format(seq))
-                cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" {}'.format(
+                cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg {}'.format(
                     save_dir, output_video_path)
                 os.system(cmd_str)
                 logger.info('Save video in {}.'.format(output_video_path))
@@ -449,7 +449,7 @@ class Tracker(object):
         if save_videos:
             output_video_path = os.path.join(save_dir, '..',
                                              '{}_vis.mp4'.format(seq))
-            cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" {}'.format(
+            cmd_str = 'ffmpeg -f image2 -i {}/%05d.jpg {}'.format(
                 save_dir, output_video_path)
             os.system(cmd_str)
             logger.info('Save video in {}'.format(output_video_path))