Mp4 to wmv with same size. How ?

[darmon111]

Hello.
I'm trying to convert MP4 file to WMV with the same size,
using different Video Converters, but getting wmv-file of much less size.
Bitrate's increase doesn't work. How to achieve the same file's size ?

The info of MP4 file:

General
Complete name                            : input.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom (isom/iso2/avc1/mp41)
File size                                : 1.01 GiB
Duration                                 : 10 min 51 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 13.3 Mb/s
Encoded date                             : UTC 2021-03-16 23:33:23
Tagged date                              : UTC 2021-03-16 23:33:23
Writing application                      : Lavf51.12.1

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings                          : 1 Ref Frames
Format settings, CABAC                   : No
Format settings, Reference frames        : 1 frame
Format settings, GOP                     : M=1, N=12
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 10 min 51 s
Bit rate                                 : 13.1 Mb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (29970/1000) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.211
Stream size                              : 1 018 MiB (99%)
Encoded date                             : UTC 2021-03-16 23:33:23
Tagged date                              : UTC 2021-03-16 23:33:23
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 10 min 51 s
Bit rate mode                            : Variable
Bit rate                                 : 160 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 12.4 MiB (1%)
Encoded date                             : UTC 2021-03-16 23:33:23
Tagged date                              : UTC 2021-03-16 23:33:23

Thanks.

[jraju]

Hi, mp4 are video and audio combined.
Wav files are only audio and sizes cannot be equal by any way of conversion.
different files format determines the size of the file.

[El Heggunte]

Use Expression Encoder 3 and choose constant-bitrate OR bitrate-constrained encoding.

How to achieve the same file's size?

Why do you want that?

[ProWo]

The max quality you can get is with:

ffmpeg -i input.mp4 -c:v wmv2 -q:v 0 -c:a wmav2 -b:a 192k output.wmv

[Hoser Rob]

How to achieve the same file's size?

Why do you want that?

+1. The original is encoded with high profile AVC. wmv video is an outdated and frankly awful codec. You can't get the same size without an enormous quality loss.