Unfortunately it generated the same result. ts file, before turning the video into raw_bitstream. gcc: 4.2.0 Seems stream 0 codec frame rate differs from container frame.
Windows ffmpeg convert frame rate how to#
Note_04: I also tried to pass '-bsf: v h264_mp4toannexb' in the previous process, generating a. Lets learn how to convert the video to a better format such as windows media. Note_03: Process suggested in the topic Using ffmpeg to change framerate 03-Merge raw_bitstream and audio, defining the new FPS.But performs perfectly when the video already has CFR, serving as a means for changing FPS, as describe here.įfmpeg -y -i "input.mp4" -c copy -f h264 "output_raw_bitstream.h264"įfmpeg -i "input.mp4" -vn -acodec copy "input_audio.aac"įfmpeg -r 12.5 -i "input_audio.aac" -i "output_raw_bitstream.h264" -acodec copy -vcodec copy "output.mp4" Note_02: This side effect of loss of sync, only occurs when the the input_video has VFR. 01h 45min 24sec video, it was improperly transformed into 04h 11min 36sec. Result: The complete process is fast (50x), but it generates a side effect of increasing the length of the video, losing the synchronization of the video with the audio. As it takes time, it does not meet the purpose of the search.įfmpeg -i "input.mp4" -filter:v fps=fps=12.5 "output.mp4" Without reencode Result: The transformation process is very long (6x), as there is a reencode.
Windows ffmpeg convert frame rate full#
See the full metadata information Attempts to solveĪll failures, because it was not possible to find a method without reencode that does not generate loss of sync with audio. With metadata similar to: Frame rate : 29.838 FPS Second Q: I have some video at 29.97 and most at 59.94 How to increase the frame rate from 29.97 to 59. When concatenating videos of the same codec, resolution, but with different FPS, there will be no error, being concatenated without reencoding and generating a video file with variable FPS. I see the same problem with 59.94 fps video, getting frame rates like 59.456, 58.882 and some 59.94. For such streams, it's a two step process ffmpeg -i in.avi -c copy framesd.jpg ffmpeg -framerate 50 -i framesd.jpg -c copy out.
Sample output with filename obscured: Input 0, matroska,webm. ffmpeg -i in.avi -c copy -f image2pipe - ffmpeg -f image2pipe -framerate 50 -i -c copy out.mp4 The JPEG frames in your input are malformed. The ffmpeg 'concat' function is commonly used to accomplish this task. This will tell you the framerate if its not variable framerate: ffmpeg -i filename. Some videos are composed by joining several other videos with the same codec / resolution.