I'm converting some old videos to play on my Roku via a dlna server. I'm trying to understand the MP4 container better to optimize conversions. I have an ogm video:
Duration: 01:00:38.22, start: 0.000000, bitrate: 1056 kb/s
Stream #0:0: Video: mpeg4 (XVID / 0x44495658), yuv420p, 576x324 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 23.98 tbn, 23.98 tbc
Stream #0:1(English): Audio: aac, 48000 Hz, stereo, fltp, 74 kb/s
Stream #0:2(Japanese): Audio: aac, 48000 Hz, stereo, fltp, 73 kb/s
Stream #0:3(English): Subtitle: text
From what I understand, MP4 container can contain MP4 video and aac audio. I used
-c:a copy -c:v copy
And it worked, but the video won't play. Obviously something's wrong. What I don't understand is why, the video looks like it's MP4 and the audio is aac. My guess is it's the Xvid but why?
Thank you. Todd
MP4 is only the container but your right MP4 usually contain AAC audio and MPEG4 video. Your input file seems to be mpeg4 Xvid which is a mpeg4 derived codec but might not be supported by Roku.
Try change -c:v copy to -c:v h264 to use a more common MPEG4 based video codec.