[HELP] Generated MP4 files does not work on Whatsapp Web
TiagoSilvaPereira opened this issue · comments
Hello, I hope you are well!
I'm using the AVC H264 Codec and I'm using WebCodecs to save it (I tried MP4Wasm but had no success compiling it with Vite). Whatsapp recommends using the same codec.
I'm still not sure what causes this problem, I've already tried several profile, level, latencyMode, etc. settings. The MP4 videos are generated correctly, and I can watch them through the video player or in the browser, but when I send them via Whatsapp Web, a preview is not generated, and the videos are only sent as attached files.
I will attach two examples of similar videos. The first one works on Whatsapp (it was converted from webm to mp4 on a remote server), and the second does not (it was generated directly in mp4 using canvas-record).
First video, converted from webm to mp4 using ffmpeg on a server (works on whatsapp web):
https://github.com/dmnsgn/canvas-record/assets/11933789/80b6745b-cce3-42fa-aa98-bd8670a95d50
Second video, converted using webcodecs on the browser using canvas-record (does not work on whatsapp web):
https://github.com/dmnsgn/canvas-record/assets/11933789/1531e1a7-59be-4418-b079-2e71477bea20
I managed to compile MP4 Wasm with Vite, it also generates MP4 files correctly, but still not working with Whatsapp Web
Some informations about both videos:
Video 1 - Ffmpeg
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\video1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.29.100
Duration: 00:00:06.56, start: 0.000000, bitrate: 6494 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 898x584 [SAR 1:1 DAR 449:292], 6492 kb/s, 16 fps, 16 tbr, 16384 tbn (default)
Metadata:
handler_name : VideoHandler
vendor_id : [0][0][0][0]
Video 2 - Webcodecs
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\video2.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42isom
creation_time : 2023-10-11T18:34:44.000000Z
Duration: 00:00:06.57, start: 0.000000, bitrate: 2158 kb/s
Stream #0:0[0x1](und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(progressive), 954x604, 2155 kb/s, 60 fps, 60 tbr, 90k tbn (default)
Metadata:
creation_time : 2023-10-11T18:34:44.000000Z
vendor_id : [0][0][0][0]
encoder : JVT/AVC Coding
@dmnsgn the problem was on mp4-muxer. The mp4-muxer creator already fixed the bug. Soon I'll make a PR updating canvas-record to the latest mp4-muxer version. Thanks
Hi, I have pushed v5.0.0-beta.0 with the updated mp4-muxer. Let me know if that issue reappears.
@dmnsgn thank you very much, just confirming it is working well with Whatsapp now